Die Schwalbe

99 problem(s) found in 4328 milliseconds (displaying 99 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Umwandlung']

1 - P0000195
Frank Christiaans
7167 Die Schwalbe 126 12/1990
P0000195
(13+10)
#3
b) wSe4 nach g8
a) 1. 0-0? droht 2. Tf8+ Kd7 3. Lxe6#
1. ... Lxc5! 2. Sxc5 0-0-0!
1. Thf1! 0-0-0 2. Lxe6+ Td7 3. Tf8#
b) 1. Thf1? Lxc5 2. Sxc5 0-0-0!
1. 0-0! Lxc5 2. Sxc5 ... (0-0-0?) 3. Tf8#
play all play one stop play next play all
a) zuletzt h6-h5 und beide Rochaden sind noch möglich. Schläge von Weiß: Bbxc, Bcxd, Bhxg, Bfxg-g8=L.
b) gegenseitiger Ausschluss der beiden Rochaden. 3 Fälle sind zu betrachten:
b1) zuletzt f7xDe6; Weiß muss 4x geschlagen haben: Bfxexdxc8=L, d.h. s0-0-0 ist unzulässig.
b2) zuletzt d7xDe6; zu den 4 Schlägen von a) wird auch der sBf gebraucht, der sich auf f1 umwandeln muss, also w0-0 unzulässig.
b3) zuletzt h6-h5: wBf zieht über f7 zum UW-Feld g8, g.h. s0-0-0 unzulässig.
Henrik Juel: C+ Popeye 4.61 after analysis (2020-10-30)
A.Buchanan: A very harmonious problem. Suppose that both sides retain castling rights. wLh3 is obtrusive, so wBf/h promoted via g7, and escaped via e6 so sBe6 came from d7 later. Wh has made at least 4 pcs, while Bl has made 2 (D & Lc) dxe6, gxh6. If last move was dxe6, then sD & sLc were captured by officers in cage. Thus sBf was captured by wB, and therefore promoted on f1, disrupting wK. Therefore the last move was h6-h5. In (a) there is no problem retaining both castling rights, but in (b) Sg8 must have reached that square via f6 *after* the promotion, disrupting bK. However in (b) the castling rights are incompatible. In (a) 1. 0-0? Lxc5! 1. Tf1!, while in (b) the reverse.
Neither twin is a PRA problem: in (a) there is no conflict between the castling, while in (b) RS applies: the pre-emptive Wh castling means we are in a reality where Bl cannot castle. (2020-10-31)
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Keywords: Castling (wksg), Obtrusive material (L), Retro Strategy (RS)
Genre: Retro, 3#
FEN: r3k3/ppp1p2p/Nb2p3/P1PP2Pp/4N3/7B/3PPRP1/4K2R
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-10-31 more...
2 - P0000775
Ferad Kakabadze
1422 Die Schwalbe 30 12/1974
P0000775
(11+5) C+
#3
Welches waren die letzten 2 Einzelzüge?
1. e8=D! f5 2. exf6ep e5 3. Dxe5#
R: 1. b2-b1=L 0-0
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Henrik Juel: The forward play is C+ Popeye 4.61
1.e8=D thr. 2.Dc8 thr. 3.Dc3#
1... f5 2.exf6ep e5 3.Dxe5#
(1... f6 does not prevent the threat, so 2.exf6 is not considered dualistic) (2020-09-26)
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Keywords: Last Moves?, Valladao Task, En passant, Promotion, Castling in the retro play, Obtrusive material
Genre: Retro, 3#
FEN: 8/3pPp2/3Pp3/4P3/1N3P2/B7/P1P2P2/kb3RK1
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2020-09-27 more...
3 - P0000793
Nikita M. Plaksin
Andrey Lobusov

1558 Die Schwalbe 33 06/1975
4. Preis
P0000793
(13+5) C+
#3 (AP)
1. cxd6ep+! Kxg3 2. 0-0! (proving ep ok)
2. ... Kg4 3. g8=D,T#
2. ... a1=D,L 3. Dg5#

R: 1. d7-d5 Tc6xh6 (unless R: Kg1-g2 Th~*h1)
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VL: A posteriori (AP)!
2.g8Q(R)+/Rg1+? Kf4 3.Qg5#??
Retro: d7-d5, Rc6xh6+ (unless Kg1-g2, Rh~-h1+).
One of the best AP-type problems. (2015-08-20)
James Malcom: The first Valladao AP? (2020-10-03)
A.Buchanan: Hi James, there are 6 earlier ones in PDB, not counting those which are not marked as Valladao (could quite a few, as basic AP is 2/3 of Valladao). Type k='a p' and not g='fairies' and k='valladao', and set sort order by date. The ur-problem is P0003417. (2020-10-03)
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Keywords: Castling (wk), a posteriori (AP), En passant as key, Promotion (ws), Valladao Task (w w w/s)
Genre: Retro, 3#
Computer test: Popeye v4.85 + minor retro/AP thought
FEN: B7/p5PP/p6R/Q1Pp4/8/PP1P2P1/p3P1k1/4K2R
Reprints: (B) Die Schwalbe 48 12/1976
feenschach 40 11-12/1977
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-10-03 more...
4 - P0002026
Thomas R. Dawson
Westen und Daheim 02/05/1915
P0002026
(7+2) C+
#3
1. Lf7! droht 2. Txc3 Kxh7 3. Th3#
1. ... c2 2. Txc2 Kxh7 3. Th2#
1. ... Kxh7 2. Tc5 Kh6,~ 3. Th5#

weisser Anzug ist legal, zuletzt z.B.:
R: 1. Kg7-h8 Be7-e8=S+
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Gerd Wilts (2001-10-17): The retro play given in the solution serves only to justify that it may indeed be White's turn. The forward play indeed starts with 1. Bf7. The idea of TRD was to compose a problem which is legal but in which one of the knights must be a promoted pawn. TRD called this an "obtrusive Knight".
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Keywords: Promotion (S)
Genre: Retro, 3#
Computer test: C+ Popeye 4.61
FEN: 4N1Bk/2R4P/8/8/1P1P4/1Kp5/8/8
Reprints: 17B Retrograde Analysis 1915
476 Hamburger Problem-Nachrichten 09-10/1949
E1 Problem 5-6 12/1951
RA69 diagrammes 28 07-08/1977
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-11-01 more...
5 - P0002312
Kostas Prentos
5673 feenschach 93 11-12/1989
P0002312
(14+11) cooked
BP in 17,5
1. e3 b5 2. Ld3 b4 3. Lg6 b3 4. axb3 hxg6 5. Ta5 Th3 6. Tb5 Tg3 7. hxg3 a5 8. Th8 a4 9. Dh5 a3 10. Se2 Ta4 11. bxa4 gxh5 12. b3 g6 13. Lb2 Lh6 14. Lg7 Lg5 15. Lh6 Lh4 16. gxh4 a2 17. Sg3 a1=T 18. Txg8#
play all play one stop play next play all
Cook: 1. h4 b6 2. Th3 La6 3. Ta3 h5 4. e3 Lxf1 5. Se2 a6 6. Sg3 Le2 7. Txa6 b5 8. Th6 Ta3 9. Txh8 Tc3 10. a4 Lxd1 11. Ta3 Lf3 12. Tb3 Lb7 13. Txb5 Ta3 14. b3 g6 15. Lb2 Lg7 16. Lxg7 Ta1 17. Lh6 Lc8 18. Txg8#
s. Version P0007474
HHS: "Die Auflösung erscheint zunächst nicht übermäßig schwierig - die TTT schlängeln sich durch die BB hindurch, dabei geht geht der Tg8 über a6, um einen der sB dort wiedererstehen zu lassen. Im 'Gegenzug' vollbringt der Lc8 ein Husarenstück - Dd1 und Lf1 gehen auf sein Konto - aber es funktioniert nicht: Der L kommt nicht über b5 hinweg, denn weder der wT noch der sB (der dort entsteht) haben Zeit, ihm Platz zu machen. Also muß man sich was anderes ausdenken: Die sBB kann man zu einem Überkreuzschlagen der wBBa- und b- ausnutzen: Das erleichtert die Rückführung der linken Türme. Aber das genügt noch nicht: Jetzt braucht Schwarz zuviel Züge. Man muß den Gedanken an den L-Streich aufgeben. Dann können die wFiguren ein analoges Spiel der sB oben rechts ermöglichen. Schwarz schafft die Zugzahl spielend, aber Weiß braucht genau 18 Züge, und das auch nur dann, wenn Tg8 direkt nach g3 kann. Aber was sollte dann der erste wRückzug sein? Bis jetzt hat man die sFiguren problemlos einfach in der NO-Ecke wiedererstehen lassen - man muß auch da einen komplizierteren Modus wählen und darf den wBh- nicht einfach zurückgehen lassen, sondern man muß ihm die Möglichkeit geben, ebenso wie sein sGegenüber den wT auf der h-Linie durchzulassen. Das ist kompliziert und knifflig, aber so und nur so klappt es [dies Wort in Gottes Ohr! HG]. Bestechend ist der Einbau der Verführungen, die immer nur um Haaresbreite scheitern." "Gefällt mir!" (WD als Prüfer) Diese ausgekochten und tollen Kreuzschlagmanöver fand aber leider nur HHS, da es doch eine NL gibt.
Henrik Juel: The content is concealed pawn captures
Despite no visible captures White captured a2xPb3xTa4 to open the a-line for [Ta1,Pa7], and h2xTg3xLh4 with black h7xLg6xDh5 to open the h-line for [Th1,Th8]
This makes life difficult for the human solver and for Natch 3.1, who tested the first 15.0 moves correct in 40 sec.
Testing the entire proof game would need more than a couple of hours by Natch (2018-12-08)
paul: See P0007474 as a version. (2020-11-03)
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Keywords: Unique Proof Game, Promotion (t)
Genre: Retro
FEN: 1nbqk1R1/2pppp2/6pB/1R5p/P6P/1P2P1N1/2PP1PP1/rN2K3
Reprints: 143 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: Mario Richter, 2020-11-04 more...
6 - P0003417
John Frederick Keeble
2206 The Problemist FCS 16, p. 173, 02/1936
P0003417
(4+5) C+
h#3
Weiß zieht an
1. ... exd6ep 2. 0-0-0 dxe7+ 3. Tf8 exf8=T,D#
play all play one stop play next play all
H.Juel: If Black may castle, last move was not made by Ke8 or Ta8, but by Pd5, so it was d7-d5, and hence White may capture en passant. 1... exd6ep 2.0-0-0 dxe7 3.Tf8 exf8=DT# where the castling (belatedly) justifies the e.p. capture.
Not 1... exd6ep 2.Kd8? dxe7 3.Kc8 e8=DT
C+ by Popeye 4.61, except for the promotion mate dual, which was considered acceptable in the old days.
Nachdruck in "Die Schwalbe" 33 mit Diagrammfehler (wBe6 fehlt).
VL: The first AP-problem! Thematic illegal try:
1. ... exd6ep 2.Kd8? dxe7+ 3.Kc8 e8=T(D)#?? (2007-02-11)
Mario Richter: 46 years between this Problem and P1366663 - perhaps this was not Keeble's first AP-Problem?! (2019-08-29)
Ladislav Packa: Of course I know the idea a posteriori. But let my heresy be forgiven - I do not consider it logical. In this particular example, I consider e.p. for proof that black can castling - not vice versa. (2019-08-29)
A.Buchanan: Hi Ladislav. If ep is ok, then Black just moved a pawn with double hop. That doesn't stop Black having e.g. moved bK right at the beginning of the game. So you can't prove that Black definitely can castle this way. What am I missing here? (2019-08-29)
Ladislav Packa: Your statement is perfectly fine. However, the AP condition is usually interpreted as castling is evidence of e.p. However, the second party does not have to do castling - the possibility has already been demonstrated by the existence of e.p. (2019-08-29)
A.Buchanan: Hi again Ladislav. Please try again, I am obviously being very stupid. I don't understand how 1. exd6ep is any more indicative that Black can castle than 1. K~. (2019-08-30)
Ladislav Packa: Hi, Andre!
e.p. is just a result of the d7-d5 move. Black can castle only if it was the last move of black (even without wPe5). Therefore, it does not have the logic of joining the e.p. with castling. For example, ask yourself if black is allowed to castle in the position without wPe5. (2019-08-30)
A.Buchanan: Hi Ladislav, I still don't understand you. Heresies must be explained extraordinarily carefully :-)
Following the conventions:
(1) Black retains castling rights because we cannot prove that bK or bR ever moved.
(2) If e.p. is now played, then we still require the same castling convention, as bK or bR might have moved earlier in the game.
(3) So the actual execution of the e.p. does not prove anything new about castling.
(4) Hence it is incorrect to say "e.p. [is] proof that black can [castle]".
Which step do you disagree with?
Yes by the convention, Black could castle in the position without wPe5. What does that prove? (2020-10-03)
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Keywords: a posteriori (AP), En passant as key, Castling (sg), Promotion (T), Valladao Task
Genre: h#, Retro
Computer test: Popeye 4.61
FEN: r3k3/2p1p3/2P1P3/2KpP3/8/8/8/8
Reprints: V. Die Schwalbe 33, p. 323, 06/1975
2001 CHM Themes 12/2000
3 Die Schwalbe 215, p. 240, 10/2005
A1 Problemkiste 169 02/2007
14 Die Schwalbe 241, p. 374, 02/2010
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2018-01-03 more...
7 - P0003423
Matti Arvo Myllyniemi
3975 Stella Polaris 01/1971
P0003423
(7+11)
h#3 (AP)
0.2.1...
1. ... g6 2. 0-0 gxf7 3. Kh8 Le5#
1. ... cxb6ep 2. 0-0-0 bxa7 3. Td7 a8=D#
play all play one stop play next play all
Henrik Juel: Analysis
If Black can castle both ways, last move must have been b7-b5
C+ Popeye 4.61 (2020-10-25)
comment
Keywords: a posteriori (AP), En passant as key, Castling (sksg), Promotion (D), Valladao Task
Genre: h#, Retro
FEN: r3k2r/p4p1p/8/KpP2PP1/4PBpP/5pp1/6p1/8
Reprints: Nordisches Turnier 1970-1971
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2020-10-25 more...
8 - P0003788
Zvonimir Hernitz
Vladimir Birek

Problem 41-44 03/1957
1. Preis
15. Thematurnier
P0003788
(2+8) C+
h#6
1. ... ... 2. Th3 f4+ 3. Kf6 f5 4. Kg7 f6+ 5. Kh8 f7 6. Th7 f8=D#
1. ... fxe3 2. Dd4 exd4+ 3. Kd6 dxc5+ 4. Kc7 c6 5. Kb8 c7+ 6. Ka8 c8=D#
play all play one stop play next play all
Autoren Zvonko Hernitz, Zagreb & Vladimir Birek, Rijeka
PR Imre Sztankovszky, Böde
Retro-Patt, Excelsior
TLi entdeckte ein eindeutiges Satzspiel: 1. ... ... 2. Th3 f4+ 3. Kf6 f5 4. Kg7 f6+ 5. Kh8 f7 6. Th7 f8=D# mit Echo in der gegenüberliegenden Ecke!
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Keywords: Echo, Promotion (D), No legal last move for White
Genre: h#, Retro
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/r7/8/2p1k3/4p3/3qpr2/4pP2/4K3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-10-01 more...
9 - P0003789
Zvonimir Hernitz
Problem 41-44 03/1957
1. ehrende Erwähnung e.a.
15. Thematurnier
P0003789
(3+13) C+
h#3
1. ... exd7 2. Tfe7 d8=T 3. Te6 Tf8#
1. Sc7? e7 Se6 e8=S# (but Wh to move)
play all play one stop play next play all
Autor Zvonko Hernitz, Zagreb
A.Buchanan: So what's the tourney theme exactly? Is it just the wonderful Art.15, the "official joke". There is a unique h#2 retro try: is that a requirement of this tourney? (2020-05-10)
Henrik Juel: You can find the award here, Andrew
http://problem64.beda.cz/silo/problem_41-44_1957.pdf
on p.79
My Serbo-Croatian is a bit rusty, so I will leave the translation to you (2020-05-10)
A.Buchanan: I cannot see the logic behind sBc4d3g5. The solution, the h#2 retro try, and the retro logic are all unaffected by their removal. There are numerous h#3 tries anyway.
I have found the results of this tourney on pages 79-81 of the document above. At 70 pages, it is too long for google translate, but apparently one can do character recognition in google drive for free, and then those pages might be translatable. There is also an interesting article by Fabel at the beginning about conventions, which might be worth resuscitating. I will leave these for someone else.
This document has been photocopied multiple times, and some of the diagrams are very difficult to read. It makes me never want to compose with a black piece on a black square ever again! However the retro condition makes it easier to reconstruct the diagrams. (2020-09-30)
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Keywords: Promotion (T), No legal last move for White, under-promotion
Genre: h#, Retro
Computer test: Henrik Juel: C+ by Popeye 4.61 (2020-05-10)
FEN: 8/3p1rp1/3PPk2/2pnrbpK/2p1q2b/3p4/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-10-01 more...
10 - P0008793
Andrej N. Kornilow
Shakhmaty v SSSR 1978
P0008793
(15+8)
#1.5
1. Ta1-d1+? (Completing the castling!)
a) 1. ... Td4 2. Txd4#
0) 1. xc5ep+? (Completing en passant!)
b) 1. ... Tb5 2. Txb5#
0) 1. xe8=S+? (Completing the promotion!)
c) 1. ... e6 2. Sf6#

0) 1. Sxe7+! Lxe7 2. f8=B# (Omitting the promotion!)
play all play one stop play next play all
Henrik Juel: Completing the key isn't legal, 1.'Rd1'/'-bPc5'/'e8S'+, but omitting the promotion in the mating move is, 1.Sxe7+ Bxe7 2.'f8'#. Excellent joke. (2003-09-19)
James Malcom: A very witty joke Valladao! (2020-09-24)
A.Buchanan: Really like this joke (2020-09-25)
Henrik Juel: To see the illegality of completing 1.fxe8=S+?, note the captures:
Black captured fxDe, so [Pg7,h7] were captured on their files, while the other six missing black men were captured by white pawns
The illegality of completing 1.0-0-0,bxc6ep? is rather obvious (2020-09-26)
James Malcom: And for those you don't find it obvious: If the White king hasn't moved, then where did wRa5, and wBb8 if bPb5 has just done a double-step, come from? Neither can be promoted pieces, as White still has all eight pawns. Trying to finish castling and en passant therefore both produce illegal positions and thus cannot be the solution. (2020-09-26)
Henrik Juel: Continuing beating the dead horse...
How does the white player actually perform an entire move?
1.0-0-0+: Ke1-c1 and Ta1-d1
1.bxc6ep+: Pb5-c6 and remove sPc5
1.fxe8=S+: remove sYe8 and Pf7-e8 and replace wPe8 with wSe8 (three fractional actions)
2.f8=Y#: Pf7-f8 and replace wPf8 with wYf8
So a marginally better stipulation might be: 'White to move mates in less than 2 moves' (2020-09-26)
A.Buchanan: I've tried to set up some intermediate diagrams to allow us to show the animation, but the pieces seem to move even for words which are not moves (and marked italic/red). It's quite baffling. It's almost as if someone with privilege has gone in the background and assigned moves to those dead words. If so, that's extremely unhelpful. Gerd was quite active on this site for a month in German lockdown, for which I'm grateful, but one key task is still waiting: to empower the editors by documenting exactly how the animation decides what to do based on the diagram(s) and stipulation. (2020-09-27)
A.Buchanan: The PDB stipulation field should be non-text form to drive the animation. Where the stipulation is non-standard, there should be a Unicode representation of the original, and translations into German, English and French. But cannot overwrite any original non-standard stipulation, in my opinion, as it is part of the composer's work. (2020-09-27)
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Keywords: En passant, Halber Zug, Castling, Promotion, Valladao Task (half!), Joke, Dummy Pawn
Genre: Retro, n#
FEN: 1B1N1bB1/p2ppP2/2P5/R1pk1N2/1r2p3/1P2P1P1/4PP1P/R1K5
Reprints: (III) Quartz 4 1997
Input: Gerd Wilts, 1997-06-21
Last update: A.Buchanan, 2020-09-27 more...
11 - P0575637
Alexandar A. Atanasijevic
feenschach 10/1973
P0575637
(7+8)
ser-h#30
1. d2 2. d1=D 3. Dxa4 4. Dc4 5. a4 6. a3 7. a2 8. a1=D 9. Dg1 10. Dxg6 11. De8 12. g5 13. g4 14. g3 15. gxh2 16. h1=D 17. Dh3 18. Dhe6 19. h3 20. h2 21. h1=D 22. Dh4 23. Dhd8 24. h4 25. h3 26. h2 27. h1=D 28. Dhh4 29. Dhe7 30. Dc6+ bxc6#
play all play one stop play next play all
Anton Baumann: C+ Alybadix (2020-11-15)
comment
Keywords: Series mover, Promotions to queens, konsekutive Umwandlungen 5
Genre: Fairies
FEN: 8/1K1k2p1/3p2Pp/pP5p/P3P2p/2Pp4/7P/8
Input: Felber, Volker, 1999-12-27
Last update: Erich Bartel, 2017-04-05 more...
12 - P0577550
Johann J. Chaschtschanski
14447 Schach , p. 79, 03/2000
P0577550
(3+9)
h#7
b) sTc2 nach h6
a) 1. Txg2 Kxg2 2. Ld4 Kh1 3. Le5 fxe5 4. Kf4 e6 5. Kg5 e7 6. Kh4 e8=D 7. Kh3 Dxh5#
b) 1. gxf3ep gxf3 2. Ke5 Kg2 3. Le4 fxe4 4. Kf6 exf5 5. Kg7 f6 6. Kh8 f7 7. Th7 f8=D#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-11-24)
comment
Keywords: Switchback (K in a), Entblockung, Promotion (D), Promotion in the mating move (D in b), Twin, En passant as key, Selfblock (in b), Corner mate (in b), Model mate (in b)
Genre: h#, Retro
FEN: 8/8/8/5p1p/4kPp1/3bb1p1/2r3Pp/7K
Input: hpr, 2000-10-27
Last update: Gunter Jordan, 2020-11-25 more...
13 - P0583703
Reinhardt Fiebig
Mirko Degenkolbe

H0311 StrateGems 01-03/2000
P0583703
(9+6) C+
h#14
ohne wK
1. Kxf8 c4 2. Ke8 c3 3. Kd7 c6+ 4. Kxc6 c5 5. Kxc5 c4 6. Kd4 c5 7. Kxe5 c6 8. Kf4 e5 9. Kxg5 h4+ 10. Kh6 h3 11. g5 hxg5+ 12. Kg7 g6 13. Kf8 g7+ 14. Ke8 g8=D#
play all play one stop play next play all
ohne wK
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Keywords: Promotion in the mating move
Genre: Fairies
Computer test: popeye 4.85
FEN: 5Q2/2p1pk2/4p1p1/2P1P1Pp/4P3/2P4P/2P4P/8
Input: hpr, 2001-08-08
Last update: Alfred Pfeiffer, 2020-10-27 more...
14 - P1014941
Pavlos N. Moutecidis
7939 feenschach 11-12/1999
Lob
P1014941
(5+2) C+
s#16
1. De2+ Kg1 2. Le3+ Kh1 3. Dh8+ Dh7 4. Df1+ Kh2 5. Db2+ Dc2 6. Lg1+ Kh1 7. Lf2+ Kh2 8. Dg1+ Kh3 9. Dg4+ Kh2 10. De5+ Kh1 11. De1+ Kh2 12. Lg1+ Kh1 13. Le3+ Kh2 14. Df4+ (Platzwechsel wD/wL) Kh3 15. Dh1+ Dh2 16. Dg2+ Dxg2#
Der Platzwechsel wird mit der Umwandlungsdame erkauft, aber zugleich durch den mehrfachen Pendelschwung des weiß-schwarzen Damenpaares und dem Pendel der weißen Läufers mit beiden Damen als Batteriehinterstein beträchtlich aufgewertet. Eine originelle Konzeption.
play all play one stop play next play all
2568
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Keywords: Langzügige Miniatur, Interchange (DL), Obtrusive material
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/8/8/2P5/5B2/4QK2/8/Qq3k2
Reprints: 467 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: James Malcom, 2020-10-06 more...
15 - P1015168
Petko A. Petkov
22 Miniaturen 1991
P1015168
(5+2) C+
s#4*
* 1. ... h3xg2#
1. Sf6 Kg3 2. Se2+ Kf2 3. Sg1 Kg3 4. Sfg4 h3xg2#
play all play one stop play next play all
Synthese-Meeraner (im Selbstmatt), Themafigur: sB
0859
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-26)
comment
Keywords: Pawn mate, Corner mate, Mutate, Switchback (k), Meerane-Thema, Obtrusive material, Miniature, Flight giving key
Genre: s#
FEN: 8/8/8/7N/3N4/7p/5kNN/7K
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2020-11-30 more...
16 - P1064109
Christopher Jeremy Morse
StrateGems 2003
P1064109
(8+6)
#2

BS Problemid: 49199
Authors: Morse, C Jeremy
Sources:
Years: 2003
Henrik Juel: 1.Sc4 with 12 threats: 2.bxa8,b8,bxc8=DTLS
Three unique mates: 1... Kxd7/Tb8/Lxc4+ 2.b8=S/bxa8=S/bxc8=S# (2020-11-19)
comment
Keywords: Brian Stephenson Collection (49199), Promotion
Genre: 2#
FEN: n1r3bK/RPkBP1N1/1N6/8/8/4n3/8/1R4b1
Input: Brian Stephenson, 2004-08-12
Last update: James Malcom, 2020-11-19 more...
17 - P1080625
Roberto Osorio
Jorge Joaquin Lois

R133 Problem Paradise 01-03/2006
P1080625
(13+15)
BP in 19,5
1. d4 Sc6 2. Dd3 Tb8 3. Da6 bxa6 4. Sf3 Tb5 5. Sh4 Th5 6. Sf5 d5 7. Sh6 gxh6 8. g4 Lg7 9. g5 Le5 10. g6 Sf6 11. g7 Sd7 12. g8=S Sdb8 13. Sf6 exf6 14. dxe5 Se7 15. e6 Sg8 16. e7 Kd7 17. e8=D+ Kd6 18. Da4 Ld7 19. c3 Lb5 20. Dd1
play all play one stop play next play all
Cook: NL
1. Sg1-f3 Sb8-a6 2. Sf3-e5 d7-d5 3. Se5-g4 Ke8-d7 4. Sg4-f6 e7xf6 5. d2-d4 Lf8-d6 6. g2-g4 Ld6-e5 7. d4xe5 Dd8-f8 8. e5-e6 Kd7-d6 9. e6-e7 Lc8-d7 10. e7-e8=D Ld7-b5 11. De8-e3 Ta8-e8 12. De3-h6 Te8-e5 13. g4-g5 Sa6-b8 14. g5-g6 g7xh6 15. g6-g7 Sg8-e7 16. g7-g8=D Te5-h5 17. Dg8-g4 Se7-g8 18. Dg4-a4 Df8-d8 19. Da4-a6 b7xa6 20. c2-c3 (H. Juel)
Gerald Ettl: Henrik, in meiner Datenbank steht der sLb5 auf e8. (2018-12-25)
Gerald Ettl: 1.d4 Sc6 2.Dd3 Tb8 3.Da6 bxa6 4.Sf3 Tb5 5.Sh4 Th5 6.Sf5 d5 7.Sh6 gxh6 8.g4 Lg7 9.g5 Le5 10.g6 Sf6 11.g7 Sd7 12.g8S Sdb8 13.Sf6+ exf6 14.dxe5 Se7 15.e6 Sg8 16.e7 Kd7 17.e8D+ Kd6 18.Da4 Ld7 19.c3 Le8 20.Dd1
aber ob es da auch ein cook gibt, weiss ich nicht. (2018-12-25)
Henrik Juel: Thank you, Gerald
Unfortunately, moving sLb5 to e8 still allows cooks, e.g.
1.Sg1-f3 Sb8-a6 2.Sf3-g1 Ta8-b8 3.Sg1-f3 Bb7-b5
4.Sf3-g1 Tb8-b6 5.Sg1-f3 Tb6-g6 6.Sf3-d4 Tg6xg2
7.Sd4-f5 Tg2-g5 8.Sf5-h6 Bg7xh6 9.Sb1-a3 Lf8-g7
10.Sa3-b1 Lg7-c3 11.Bd2xc3 Bb5-b4 12.Bc3xb4 Tg5-h5
13.Bb4-b5 Bd7-d5 14.Bb5-b6 Ke8-d7 15.Bb6-b7 Kd7-d6
16.Bb7-b8=D Lc8-d7 17.Db8-c8 Ld7-e8 18.Dc8-f5 Sa6-b8
19.Df5-f6 Be7xf6 20.Bc2-c3 (2018-12-25)
Henrik Juel: sorry, I made a mistake
Moving sLb5 to e8 makes the problem C+ by Natch 3.1 (39 s) (and no solution in 19.0 moves) with solution given by Gerald (2018-12-25)
paul: This PG (with bBe8) was ranked first (judge K. Prentos) (2020-12-01)
more ...
comment
Keywords: Unique Proof Game, Interchange (ss), Pronkin Theme (D), Ceriani-Frolkin Theme (S), Excelsior (w), Promotion (SD), under-promotion
Genre: Retro
FEN: 1n1q2nr/p1p2p1p/p2k1p1p/1b1p3r/8/2P5/PP2PP1P/RNBQKB1R
Input: Gerd Wilts, 2009-01-17
Last update: Alfred Pfeiffer, 2018-12-26 more...
18 - P1082812
Arthur Pach
1894 Europe Echecs 162 07/1972
P1082812
(8+7)
ser-h#31
1. g5 2. g4 3. gxh3 4. h2 5. h1=L 6. Lxc6 7. Le8 8. c5 9. c4 10. c3 11. c2 12. c1=L 13. Ld2 14. Lxa5 15. Ld8 16. a5 17. a4 18. a3 19. a2 20. a1=L 21. Lxb2 22. Lc1 23. Lxh6 24. Lf8 25. h5 26. h4 27. h3 28. h2 29. h1=L 30. L1c6 31. L6d7 f6#
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4 sL-Umwandlungen
Erich Bartel: Bei der angegebenen Quelle dürfte es sich um einen Nachdruck handeln.
Lt. dem mir vorliegenden Original-Heft ist die Erstquelle:
1894 Europe Echecs (162) VII 1972.---
weiterer Nachdruck:
2) 81 feenschach (16) VIII 1973 (2009-07-27)
SBD: The 1978 second edition of Rice and Dickins The Serieshelpmate gives the BCM source, so perhaps the error crept in by the citation of the secondary source through the book? (2009-08-01)
Anton Baumann: C+ Alybadix (2020-11-17)
comment
Keywords: Excelsior, black, Promotions to bishops, Series mover
Genre: Fairies
FEN: 8/p1p1kppp/2P1p2P/P3PP2/8/7P/1P6/5K2
Reprints: British Chess Magazine 08/1972
81) feenschach 16, p. 114, 08/1973
Input: HBae, 2009-02-06
Last update: Alfred Pfeiffer, 2017-01-18 more...
19 - P1085218
Horacio Amil Meylan
i010 Mirador 02/2004
P1085218
(9+6)
ser-h#32
1. e6 2. exf5 3. f4 4. f3 5. f2 6. f1=D 7. Dxh3 8. Dxh5 9. Df5 10. h5 11. h4 12. h3 13. h2 14. h1=L 15. Lxc6 16. Le4 17. c6 18. cxb5 19. b4 20. b3 21. b2 22. b1=T 23. Tb6 24. Txd6 25. Te6 26. d5 27. d4 28. d3 29. dxc2 30. c1=S 31. Se2 32. Sf4 d4#
play all play one stop play next play all
Anton Baumann: C+ Alybadix (2020-11-27)
comment
Keywords: Series mover, Allumwandlung, Excelsior (4-fach), Kindergarten Problem, Pawn mate, Ideal mate, Entblockung, Selfblock, Promotion, under-promotion, konsekutive Umwandlungen 4 (dlts)
Genre: Fairies
FEN: 8/2ppp2p/2PP1p2/1PK1kP1P/8/7P/2PP4/8
Reprints: zu 18098 Die Schwalbe 204, p. 656, 08/2020
Input: hpr, 2009-05-30
Last update: Gunter Jordan, 2020-08-14 more...
20 - P1092871
Andrey Selivanov
1 Isbrannoje twortschestwo 2001
Waleri Kirillow 50 JT
1. Preis
P1092871
(10+9) C+
s#5
1. Sc8 Kxf6 2. f8=T+ Ke6 3. d8=T g4 4. Sxa7 Txa7 5. De7+ Txe7#
1. Sc8 g4 2. f8=L Kxf6 3. d8=L+ Ke6 4. Lc4+ bxc4+ 5. Dd7+ Lxd7#
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more ...
comment
Keywords: Epaulettenmatt, konsekutive Umwandlungen 2, Umwandlungswechsel
Genre: s#
Computer test: M. Schreckenbach: Gustav 4.1 d
FEN: 4K3/p2PNP1Q/rp2kN2/rp4p1/bP6/1p1B2B1/1P6/8
Input: Frank Müller, 2009-10-23
Last update: Olaf Jenkner, 2020-11-23 more...
21 - P1093007
Andrey Selivanov
4076 Phénix 07-08/2002
2. Lob
P1093007
(6+2) C+
s#7
1. Sc7! Kd8 2. g8=T+ Kxc7 3. Lg3+ Td6 4. Tc8+ Kb6 5. Lf2+ Ka6 6. Tc6+ Txc6 7. Dc8+ Txc8#
1. ... Kxc7 2. La5+ Kc8 3. De8+ Td8 4. g8=D Txe8 5. Dg4+ Te6 6. Dc4+ Tc6 7. Da6+ Txa6#
play all play one stop play next play all
more ...
comment
Keywords: Umwandlungswechsel
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K1k5/3r2P1/N3Q3/3R4/8/8/8/4B3
Input: Frank Müller, 2009-10-24
Last update: Marcin Banaszek, 2020-10-05 more...
22 - P1093621
Anatoli N. Kejv
2773 Schach-Aktiv 04/2003
P1093621
(8+4) C+
s#6
1. b8=L! Kh3+ 2. Df3+ Kh4 3. Dg2 Kh5 4. g8=S Kh4 5. f8=L Kh5 6. Le7 Lxg2#
1. ... Kg1+ 2. Df3 Lg2 3. g8=T Kh1 4. f8=L Kg1 5. Lfd6 Kh1 6. Lh2 Lxf3#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-03)
comment
Keywords: konsekutive Umwandlungen 3 (LSL,LTL), Umwandlungswechsel, under-promotion in the key (T)
Genre: s#
FEN: K7/PP3PPp/1p5P/1P6/5Q2/8/6k1/7b
Input: Frank Müller, 2009-11-08
Last update: Marcin Banaszek, 2020-11-07 more...
23 - P1109832
Evgeny Sorokin
Pavlos N. Moutecidis

20 British Chess Federation 11/1971
127. Turnier 1970/71
3. Preis
P1109832
(9+7)
ser-h#28
1. b1=L 2. Lxa2 3. Ld5 4. a2 5. a1=L 6. Lc3 7. Lxb4 8. Lxd6 9. b4 10. b3 11. b2 12. b1=L 13. Lxg6 14. Lf5 15. g5 16. g4 17. g3 18. g2 19. g1=L 20. Lxh2 21. Lg3 22. Lxh4 23. Lf6 24. h4 25. h3 26. h2 27. h1=L 28. Lhe4 d4#
play all play one stop play next play all
Anton Baumann: C+ Alybadix (2020-11-25)
comment
Keywords: Kindergarten Problem, Series mover, Promotions to bishops, konsekutive Umwandlungen 5 (lllll)
Genre: Fairies
FEN: 8/6p1/3Pp1P1/1p2k2p/1P5P/p3P3/Pp1P3P/3K4
Input: Frank Müller, 2010-07-04
Last update: Olaf Jenkner, 2010-12-28 more...
24 - P1113999
Gerald Ettl
70 mpk-Blätter 10/2004
P1113999
(5+13)
#13
1. a8=D? Ta3!
1. a8=S! Ka3 2. Sc7 Ka4 3. Sa6 Ka3 4. Sc5 a4 5. Se6 fxe6 6. f7 e5 7. f8=S e4 8. Sg6 hxg6 9. h7 g5 10. h8=S g4 11. Sf7 g3 12. Sd6 g2 13. Sxb5#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-12-01)
comment
Keywords: Promotions to Knights
Genre: n#
FEN: 8/P4p1p/5P1P/pp6/kp6/1p2p3/rrp1P3/qbK5
Input: Frank Müller, 2010-08-30
Last update: Frank Müller, 2010-08-30 more...
25 - P1151303
F. Morel
Curieux 1943
P1151303
(5+2) C+
#2
1. Sh8! (Zugzwang)
1. ... Kxh8,Sf6,Sg5 2. f8=D#
1. ... Sf8 2. e8=S#
play all play one stop play next play all
FE-S2D2 BUS10 mm
more ...
comment
Keywords: Miniature Collection (0310164), Promotion in the mating move, under-promotion in mating move
Genre: 2#
Computer test: popeye 4.85
FEN: 8/4PPkn/6N1/4K3/8/7R/8/8
Reprints: 6637 Schweizerische Schachzeitung 02/1944
Input: Zuncke/Bruder, 2010-09-12
Last update: Alfred Pfeiffer, 2020-10-15 more...
26 - P1181239
Thomas R. Dawson
The Chess Amateur 12/1923
Asymmetrie-Turnier 1924
1. Preis
P1181239
(15+10) C+
s#5
1. gxf6ep+ Kxe8 2. Dg6+ hxg6 3. cxd8=S ... 4. f7+ Ke7 5. Sxg6+ Sxg6#
play all play one stop play next play all
Schwarz hat zuletzt f7-f5 gezogen, da d7-d5 an der retrograden Einsperrung des Lc8 scheitert.
Henrik Juel: C+ Popeye 4.61 after analysis
Analysis
White is missing one man, so last move was not a pawn capture
White pawns captured all six missing black men, so last move was not d7-d5
Obviously last move was not made by Ke7 or Sd8f8, so last move was f7-f5 legitimizing the ep key (2020-11-02)
comment
Keywords: Asymmetrical solution, En passant as key, Symmetrical position, Promotion (S)
Genre: Retro, s#
Computer test: C+ Popeye 4.61 after analysis
FEN: 1NRnBnRN/1pP1k1Pp/4p3/2PpKpP1/2pPQPp1/8/2P3P1/8
Reprints: 87 Asymmetry 1927
199 Mat Plus Review 01-06/2010
H2 ASymmetrie 2013
Input: Frank Müller, 2010-11-25
Last update: A.Buchanan, 2020-11-03 more...
27 - P1182118
Frank J. Marshall
Marshall's Chess "Swindles" , p. 129, 1914
P1182118
(6+3) C+
#2 mit dem Sg6
1. f7 Kxg6 2. f8=S#
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Der gerade geschlagene wSg6 kommt durch die UW wieder aufs Brett und setzt matt; deshalb auch der wSb1.
Originalforderung: White mates in two - with the Knight at KKt6.
Motto: "A La Napier"
A.Buchanan: It's easy to make a miniature ideal mate version of this cheeky problem, e.g. 8/6pk/3N1PN1/6P1/7K/8/8/8 but the charm of Marshall's original is the apparently pointless wSb1 (2020-10-21)
comment
Keywords: Joke, Constrained problem, Joke promotion (recycle wS)
Genre: 2#
Computer test: Popeye v4.85. The only #2 happens to satisfy the constraint
FEN: 8/6pk/4KPN1/6Pp/7P/8/8/1N6
Input: Mario Richter, 2010-12-11
Last update: A.Buchanan, 2020-10-21 more...
28 - P1184018
Ivan Soroka
2547 Chorno-bili stezhyny 12/2010
4. Preis
P1184018
(8+3)
s#7
2 Lösungen
1. b8=T+ Kc7 2. Tb7+ Kd8 3. Td6 Kc8 4. Tc6+ Kd8 5. Tb8+ Lc8 6. Td6 Kc7 7. Tb7+ Lxb7#
1. b8=L Kc8 2. Tc5+ Kd8 3. Df6+ Ke8 4. Te5 Le6 5. Dg7 Kd8 6. Df8+ Kd7 7. Td5+ Lxd5#
play all play one stop play next play all
more ...
comment
Keywords: Umwandlungswechsel
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K2k4/PP1b4/4Q1p1/1P1R2P1/3P4/8/8/8
Input: Frank Müller, 2011-01-02
Last update: James Malcom, 2020-09-30 more...
29 - P1186997
Erich Bartel
5552 Problemkiste (138) 12/2001
P1186997
(4+4) C+
h=3 (AP)
0.1...
1. ... hxg6ep 2. 0-0 g7 3. Kh7 gxf8=D=
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Wenn ep erlaubt sein soll, dann muß g7-g5 der letzte Zug gewesen sein. Dies wiederum bedingt, daß sK+sT noch nicht gezogen haben. Nur unter dieser Betrachtungsweise (AP) ist das Ding korrekt.\eb
Löserstimmen:
Diese AP-Idee ist ja nun hinlänglich bekannt, aber man muß auch darauf kommen, sie für den Valladao zu nutzen. Finde ich prima (MN).
ep, und dann kann Schwarz auch noch rochieren (HM).
Wenn g7-g5 letzter Zug war, darf Schwarz noch rochieren (KF)...
AP (= a posteriori) argumentiert andersrum: wenn Schwarz noch soll rochieren dürfen, muß g7-g5 der letzte schwarze Zug gewesen sein (\eb)
Unlösbar! Der Autor meint wohl, man könnte mit 1. ... hxg6ep 2. 0-0 loslegen; hier irrt Goethe. Die beiden Konventionen -ep-Schlag nur, wenn Zulässigkeit retroanalytisch beweisbar ist; Rochade stets, außer wenn Unzulässigkeit retroanalytisch beweisbar ist- sind zwar passend verknüpft. Was aber den Vorrang hat, zeigt die zeitlich Reihenfolge der Anwendung. Zuerst kommt der ep-Schlag, und diesbezüglich gilt: Zulässigkeit nicht beweisbar, also nicht erlaubt (LZ).
Lieber Herr Zagler, vielen Dank für Ihren Kommentar, aber ich denke nicht, daß dazu eine Stellungnahme erforderlich ist, denn dazu ist schon viel diskutiert und geschrieben worden, ichverweise nur auf G. Lauingers "a posteriori Zwischenbilanz" in feenschach (80) X-XI 1986, S.414 ff, wo die AP-Regelung allgemein wie folgt definiert wurde:
"Eine einleitende Handlung (z.B. ein ep-Schlag oder ein unkonventionell Beginn), deren Zulässigkeit nach gültigen Konventionen zunächst nicht nachgewiesen werden kann, wird im Verlauf der Lösung(en) nachträglich durch einen oder mehrere Sonderzüge legalisiert. Legalisieren bedeutet dabei, daß _nur_mit_der_Ausführung_ des Sonderzuges (der Sonderzüge) dessen (deren) Zulässigkeit nachgewiesen wird und gleichzeitig (i.a. aus retroanalytischen Gründen) damit auch nachträglich die Zulässigkeit der einleitenden Handlung."
Ob Sie nun mit dieser Regelung einverstanden sind hat für o.a. Aufgabe wenig Bedeutung, denn nach o.a. "AP"-Definition ist sie lösbar. Wenn Sie "AP" so nicht akzeptieren und einer anderen Retro-Philosophie zugetan sind, steht das auf einem anderen Blatt. Da müßten Sie sich dann mit den entsprechenden Experten auseinandersetzen. (\eb)
Da nur die Rochade den sK nach h7 zu manövrieren vermag, fällt manchem sicher gar nicht erst auf, daß allein sie (neben dem Autor, natürlich!) für die Legalisierung des e.p.-Schlages verantwortlich ist (MR).
Valladao-Task. Bei dieser Ausgangsstellung mit Ansage (HL).
A.Buchanan: Removing the superfluous sBf7 adds various non-castling lines which the AP convention duly protects us from, and makes the composition a sound miniature (2020-10-03)
comment
Keywords: Valladao Task, Castling, En passant, Promotion, a posteriori (AP)
Genre: Retro
Computer test: %Popeye FreeBSD-4.3-RELEASE-32Bit-Version 3.73
FEN: 4k2r/5p2/5P1P/5KpP/8/8/8/8
Reprints: Springaren (116) 03/2010
K3966 Problemkiste (199/200) 03/2012
Input: Erich Bartel, 2011-02-09
Last update: Alfred Pfeiffer, 2014-09-05 more...
30 - P1227705
Steven B. Dowd
S146 Problemist of Ukraine 10-12/2011
P1227705
(5+2) C+
s#10
b) alles 1 nach links
a) 1. Te8+ Kf6 2. Df3+ Kg5 3. d8=L+ Te7 4. Th8 Kh4 5. Kg8 Kg5 6. Lh5 Kh4 7. Lg4 Kg5 8. Th5+ Kg6 9. Dc6+ Te6 10. De8+ Txe8#
b) 1. Td8+ Ke6 2. c8=D+ Td7 3. Kh7 Kf7 4. Tf8+ Ke6 5. Te8 Kf7 6. Dh5 Ke6 7. Db5 Kf7 8. Db3+ Td5 9. Df3+ Tf5 10. Dh5+ Txh5#
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more ...
comment
Keywords: Echo, Umwandlungswechsel
Genre: s#
Computer test: SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force (2020-09-24)
FEN: 7R/1r1PkB1K/8/3Q4/8/8/8/8
Input: Frank Müller, 2011-12-23
Last update: Erich Bartel, 2020-09-24 more...
31 - P1229728
Karl Fabel
117 Aussiger Tagblatt 30/12/1931
P1229728
(5+2)
#3
1. d7! droht 2. d8=D+ Ld5 3. Dxd5#
1. ... Ld5 2. d8=S Lb7,La8..h1 3. Se6#
2. ... Lf7,La2..g8 3. Sc6#
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Lösungsturnier des Aussiger Tagblattes 3. Folge 1931

'Aussiger Tagblatt': "Herr Dr. Ing. Karl F a b e l, dessen Problemkunst durch die 4. Notverordnung arg in Mitleidenschaft gezogen wurde, stellte uns in liebenswürdiger Weise seine jüngste Aufgabe als Silvesterdreier freundlichst zur Verfügung. Die starken Waffen, Dame und Turm musste er der Not gehorchend abliefern und zur größten Sparsamkeit im Figurenmaterial angehalten, blieb ihm kein anderer Ausweg offen, als die noch nicht ablieferungspflichtigen Bauern zu Ersatzoffizieren avancieren zu lassen. Trotz aller Not jedoch hat sein findiger Kopf einen „fabelhaften“ Dreier hervorgebracht, für dessen Überlassung wir herzlichst danken."

Unterverwandlung, Springer. In Bezug auf die 'Notverordnung' kalauerndes Umwandlungsproblemchen als Silvesterdreier: mindestens hier wurde zum Jahreswechsel 1931/1932 bereits der Kalauer “fabelhaft” bemüht! [he]. Selbstverständlicher Schlüssel... Bruch der Konvention < [EZ].
Henrik Juel: C+ Popeye 4.61 (2020-11-30)
comment
Keywords: Promotions to Knights, Fabel-Opus (36)
Genre: 3#
FEN: 8/8/1N1P1N2/8/3k4/3N4/3K4/7b
Reprints: 88 Kurioses Schach 1975
Input: Mario Richter, 2012-01-07
Last update: Mario Richter, 2020-11-30 more...
32 - P1233983
Ivan Soroka
(40) Selected Selfmates 2011
Alexandr Ashusin 60 JT
Gruppe Miniaturen
3. ehrende Erwähnung
P1233983
(5+2) C+
s#7*
* 1. ... Kb6 2. b8=T+ Ka6 3. Dc8+ Tb7 4. a4 Kb6 5. Dc5+ Ka6 6. Da7+ Txa7#
1. a4 Kb6 2. b8=D+ Ka6 3. Dbc8+ Kb6 4. Dd4+ Tc5 5. Dcd7 Ka6 6. De6+ Tc6 7. Dc8+ Txc8#
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more ...
comment
Keywords: Changed mates, Umwandlungswechsel
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K7/1P6/k7/1r6/1PQ5/P7/8/8
Input: Frank Müller, 2012-03-09
Last update: James Malcom, 2020-10-01 more...
33 - P1236318
Andrey Selivanov
9283 Thema Danicum 01/2004
Informalturnier 2004/05
1. Lob
P1236318
(6+2) C+
s#7
1. e7! Kd6 2. Ta6+ Kc5 3. Tb5+ Kxb5 4. Da4+ Kc5 5. e8=D+ Td6 6. Ta5+ Kb6 7. Dd8+ Txd8#
1. ... Kc5 2. Db4+ Kc6 3. e8=D+ Td7 4. Ta4 Kd5 5. Da5+ Kc6 6. Dc8+ Tc7 7. Ta7 Txc8#
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more ...
comment
Keywords: Stalemate dissolution, Promotion (D)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K4B2/RR6/2k1P3/3r4/4Q3/8/8/8
Input: Frank Müller, 2012-04-08
Last update: James Malcom, 2020-10-02 more...
34 - P1264207
Tivadar Kardos
5836 Sakkelet 04-05/1993
P1264207
(11+12) C+
s#6
1. b8=T+ Kc6 2. c8=T+ Kd6 3. d8=T+ Ke6 4. e8=T+ Kxf6 5. f8=D+ Kxg6 6. g8=T+ Lg7#
play all play one stop play next play all
fehlender sBa3 war Druckfehler.
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-09)
comment
Keywords: Promotions to rooks, konsekutive Umwandlungen 6 (TTTTDT)
Genre: s#
FEN: 8/RPPPPPP1/1k3NN1/Rpp2ppp/8/p7/rb1K2n1/2n1r3
Input: Frank Müller, 2013-03-13
Last update: Marcin Banaszek, 2020-11-12 more...
35 - P1264211
Tivadar Kardos
5867 Sakkelet 06-07/1993
Spezielle ehrende Erwähnung
P1264211
(12+11) C+
s#6
1. c8=T+ Kd6 2. d8=T+ Ke6 3. e8=T+ Kf6 4. f8=T+ Kxg6 5. g8=T+ Kh6 6. h8=T+ Lh7#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-09)
comment
Keywords: Promotions to rooks, konsekutive Umwandlungen 6
Genre: s#
FEN: 8/R1PPPPPP/1Nk3N1/Ppp3p1/1p4Pn/8/r1bK1b2/2n1r3
Input: Frank Müller, 2013-03-13
Last update: Marcin Banaszek, 2020-11-12 more...
36 - P1270473
Saturnin Limbach
4138 Magyar Sakkelet 12/1977
Lob
P1270473
(9+2) C+
s#10
b) wBe7 nach d7
a) 1. e8=T Ka3 2. Db2+ Ka4 3. Tee4 Ka5 4. Db6+ Ka4 5. Tg1 Ka3 6. Db2+ Ka4 7. Tb1 Ka5 8. Db6+ Ka4 9. Db5+ Ka3 10. Sc2+ Sxc2#
b) 1. d8=D Ka3 2. Db2+ Ka4 3. Dh4 Ka5 4. Db6+ Ka4 5. Tg1 Ka3 6. Db2+ Ka4 7. Tb1 Ka5 8. Db6+ Ka4 9. Db5+ Ka3 10. Sc2+ Sxc2#
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SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force (2020-10-19)
comment
Keywords: Umwandlungswechsel
Genre: s#
FEN: 8/4P3/1QP5/2P2P1P/k2n2R1/4N3/8/K7
Reprints: 1896 Szachy 05/1980
Input: Frank Müller, 2013-05-20
Last update: Marcin Banaszek, 2020-10-19 more...
37 - P1270733
Christer Jonsson
The Ural's Problemist 04-06/2005
3. Thematurnier
1. Lob
P1270733
(5+3) C+
s#7
1. Dee7+ Kc8 2. Dh3+ Sg4 3. De6+ Kd8 4. Dh4+ Sf6 5. De7+ Kc8 6. Dd7+ Sxd7 7. Sb6+ Sxb6#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-07)
comment
Keywords: Obtrusive material
Genre: s#
FEN: K2k4/R6Q/p3Q3/8/N7/8/7n/8
Input: Frank Müller, 2013-05-25
Last update: Marcin Banaszek, 2020-10-12 more...
38 - P1271996
Bo Lindgren
feenschach 1982
P1271996
(5+2) C+
ser-r#18
1. h8=L 2. Lf6 3. Ld8 4. a8=T (1...4. Ke6? ..5. a8=D#) 5. Ta6 6. Td6 7. a6 8. a7 9. a8=T 10. Ta5 11. Ke6 12. Te5 13. a5 14. a6 15. a7 16. a8=L 17. Ld5! (17. Lf6? 18. Td8#) 18. Lf6 Sd4#
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Anton Baumann: C+ Alybadix (2020-11-20)
comment
Keywords: Series mover, Promotion (k LTTL)
Genre: Fairies
FEN: 4k3/P6P/8/P3K3/P7/8/2n5/8
Reprints: Umwandlungsrekorde (2) (2) 05/1985
Input: Erich Bartel, 2013-06-07
Last update: Arnold Beine, 2020-11-21 more...
39 - P1271997
Milos Tomasevic
3477 feenschach 58 12/1981
3. ehrende Erwähnung
PR: Thomas Brand
P1271997
(7+5)
ser-r#25
1. a8=L 2. Lxd5 3. Lf3 4. d5 5. d6 6. dxc7 7. c8=L 8. Lh3 9. h7 10. h8=L 11. Ld4 12. Lxb6 13. Le3 14. b6 15. b7 16. b8=D 17. Db5 18. De2 19. b5 20. b6 21. b7 22. b8=D 23. Db4 24. Lf1 25. Dbe1 fxg3#
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Anton Baumann: C+ Alybadix (2020-11-30)
comment
Keywords: Series mover, Promotion (konsekutiv LLLDD), Kindergarten Problem, under-promotion, Promotion in the key
Genre: Fairies
FEN: 8/P1p5/1p5P/1P1p4/1P1P1p2/6P1/5K1k/8
Reprints: feenschach 68, p. 270, 12/1983
Umwandlungsrekorde (2) 05/1985
Input: Erich Bartel, 2013-06-07
Last update: Alfred Pfeiffer, 2018-02-20 more...
40 - P1272031
Andrey Selivanov
The Ural's Problemist 01-03/2004
Den Lesern gewidmet
3. Preis
P1272031
(5+2) C+
s#7
1. c7 Kb6 2. Tc6+ Ka5 3. c8=D+ Tb6 4. De4 Kb5 5. Dcf5+ Ka6 6. Ded5 Txc6 7. Dc8+ Txc8#
1. ... Ka5 2. Ka7 Txc5 3. c8=T+ Tc7+ 4. Ka8 Kb6 5. Tb8+ Ka5 6. Dd4 Ka6 7. Da7+ Txa7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-08)
comment
Keywords: Stalemate dissolution, Phoenix (T), Umwandlungswechsel (D-T), Opferwechsel (D-D)
Genre: s#
FEN: K2B4/8/k1P5/1rR5/2Q5/8/8/8
Input: Frank Müller, 2013-06-08
Last update: Marcin Banaszek, 2020-10-12 more...
41 - P1273184
Wilhelm Hagemann
Horizont 1947
P1273184
(5+3)
#3
1. b7xa8=S! d5-d4 2. Sa8-b6 d4-d3 3. a7-a8=D,L#
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t/entfernte Springerumwandlung
t/alle Umwandlungen auf demselben Feld;
Henrik Juel: C+ Popeye 4.61 (except for promotion mate dual) (2020-10-24)
comment
Keywords: Promotion (konsekutiv SD/L), Promotion in the key, under-promotion, Promotion in the mating move, Tolerated dual promotion
Genre: 3#
FEN: bB6/PP6/8/3p4/8/8/5K1P/7k
Input: Erich Bartel, 2013-06-26
Last update: A.Buchanan, 2020-10-24 more...
42 - P1274074
Theodor Steudel
1352 Jugendschach 01/1986
P1274074
(6+6) C+
ser-=3
sDU=Grashüpfer
1. gxh8=G! 2. axb8=G 3. f8=G=
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Die dreifache konsekutive Umwandlung im Serienzugpatt ist alles andere als einfach darzustellen. Nr.38 stellt bis heute das einzige Beispiel dar, das ohne weiteres Märchenelement (neben der Figur, in die umgewandelt wird) auskommt: Kompliment.

t/promotion only
Anton Baumann: C+ Alybadix (2020-11-15)
comment
Keywords: Promotion (Märchen-), Bartel-Thema, Series mover
Pieces: du = Grasshopper (G)
Genre: Fairies
FEN: 1*2q4Kn/P4PP1/8/8/8/6*2q1/5p1P/4*2qBk1
Reprints: Umwandlungen in Märchenfiguren 2 1993
Input: Erich Bartel, 2013-07-08
Last update: Vaclav Kotesovec, 2020-07-18 more...
43 - P1275310
Klaus Funk
774 König & Turm 28 12/2009
P1275310
(3+7) C+
h#2
2.1...
Andernachschach
1) 1. gxh1=wT! 0-0 2. Ka3 Ta1#

2) 1. gxh1=wD! Dh6 2. Sd1 Da6#
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more ...
comment
Keywords: Castling, Umwandlungswechsel, Andernach Chess
Genre: Fairies
Computer test: Popeye 4.61
FEN: 8/8/8/8/kp2p3/1p2p3/1n2P1p1/4K2R
Input: Klaus Funk, 2013-07-29
Last update: James Malcom, 2020-09-30 more...
44 - P1282593
William Edward Lester
1223 The Problemist FCS 02/1934
P1282593
(2+6) C+
s#6
Längstzüger;
sDu= Grashüpfer;
1. g4! Gg3 2. g5 Gh2 3. g6 Ga2 4. g7 Gh8 5. g8=G Gb8 6. Gg2 Gh2#
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Wehrlos muss Schwarz dazuhelfen, dass sich Weiß durch seinen Exzelsior und die anschließende Rückkehr des Minimalexzelsiorbauern nach Umwandlung auf sein Startfeld das Selbstmatt gräbt
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comment
Keywords: Maximummer, Excelsior, Promotion (Märchen-)
Pieces: du = Grasshopper (G)
Genre: Fairies
Computer test: SCHRECKE: C+, popeye 4.85 (2020-10-25)
FEN: 1*2qk2*2q*2q1/1p6/8/8/8/8/1*2q4P1/7K
Input: Erich Bartel, 2014-01-28
Last update: Erich Bartel, 2020-10-26 more...
45 - P1288715
Bernd Schwarzkopf
A12 Problemkiste (169) 02/2007
P1288715
(4+3) C+
=5
AP-Priorität
1. dxc6ep 0-0-0 2. b7+ Kb8 3. c7+ Kxb7 4. cxd8=D Ka7 5. Dc8=
3. ... Ka7 4. cxd8=S Kb8 5. Ka6,Kb6=
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A.Buchanan: Guessing so-called "AP-Priorität" is a variant of AP whereby Black is forced to legitimize (or at least forbidden to rule out the possibility of legitimizing) the earlier e.p. (2020-10-03)
comment
Keywords: En passant, a posteriori (AP), Castling, En passant as key, Promotion, Valladao Task
Genre: Retro, Fairies
Computer test: Popeye v4.85 + minor retro/AP thinking
FEN: r3k3/8/1P1P4/1KpP4/8/8/8/8
Input: Erich Bartel, 2014-09-29
Last update: A.Buchanan, 2020-10-03 more...
46 - P1304998
Gunter Jordan
13346 Springaren (136) 06/2015
P1304998
(7+4) C+
s#7
2 Lösungen
1) 1. c8=S Ke6 2. g8=D+ Tf7 3. Sd6 Kf6 4. Se4+ Ke6 5. Dxg6+ Tf6 6. Ke8 Txg6 7. Dg8+ Txg8#
2) 1. c8=T Ke6 2. Te5+ Kd6 3. Txg5 Ke6 4. d5+ Kd6 5. Df6+ Te6 6. g8=D Txf6 7. Df8+ Txf8#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-15)
comment
Keywords: Echo, Umwandlungswechsel
Genre: s#
FEN: 3K1Q2/2P1r1P1/3k2p1/2R3p1/3P2P1/8/8/8
Input: Frank Müller, 2015-07-03
Last update: Marcin Banaszek, 2020-11-18 more...
47 - P1311477
Wiktor I. Schum
S266 Problemist of Ukraine (46) 10-12/2015
P1311477
(8+6) C+
s#9
1. Dc7 Ke8 2. b4 Kf8 3. b5 Ke8 4. b6 Kf8 5. b7 Ke8 6. b8=S Kf8 7. Sd7+ Ke8 8. Dc6 Kd8 9. Sf8 Sf6#
play all play one stop play next play all
more ...
comment
Keywords: Excelsior (S), Obtrusive material (h6)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 5knR/3Qp1pK/4P1Pb/3P2p1/6P1/8/1P6/8
Input: Frank Müller, 2015-11-01
Last update: James Malcom, 2020-09-28 more...
48 - P1330760
Bo Lindgren
3733 feenschach 63 12/1982
P1330760
(5+2) C+
ser-r#22
1. a8=T 2. Ta7 3. Tg7 4. a7 5. a8=T! 6. Ta4 7. Tag4 8. a4 9. a5 10. a6 11. a7 12. a8=T 13. Taa4 14. Taf4 15. a4 16. a5 17. a6 18. a7 19. a8=T 20. Ta6 21. Tf6 22. T7g5 Se7#
20. Tg5? 21. Ta6 22. Kf6#
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t/alle Umwandlungen auf demselben Feld,
Anton Baumann: C+ Alybadix (2020-11-21)
comment
Keywords: Series mover, Promotions to rooks
Genre: Fairies
FEN: 2n5/P7/P7/3k1K2/8/P7/P7/8
Input: Erich Bartel, 2017-02-05
Last update: Olaf Jenkner, 2020-11-23 more...
49 - P1330808
Joost de Heer
F432 Probleemblad 05/-6/2004
P1330808
(1+2+5) C+
ser-#8
Circe
1. b7-b8=nL 2. a7xb8=nL[+nLf8] 3. Lb8xe5[+nBe7] 4. e7-e8=nL 5. d7xe8=nL[+nLc8] 6. Lc8xf5[+nBf7] 7. Lf5-h7 8. f7xg8=nL#
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Joost de Heer: Improved version: f5 to g4, -Sg8, ser-#9 (C+ Popeye 4.85) (2020-10-20)
comment
Keywords: Series mover, Circe, Promotions to bishops
Genre: Fairies
Computer test: %Popeye FreeBSD-4.3-RELEASE-32Bit-Version 3.81
FEN: 3K2n1/-P-P1-P4/8/4-P-P2/2k5/8/8/8
Input: Erich Bartel, 2017-02-05
Last update: Alfred Pfeiffer, 2017-02-07 more...
50 - P1356154
Mirko Degenkolbe
Steven B. Dowd

H3382v The Problemist 26-8, p. 318, 03/2018
P1356154
(11+9)
h#24
1. Kxb5 La2 2. Kc6 Lb1 3. Kc7 La2 4. Kd8 Lb1 5. Ke8 La2 6. Kf8 Lb1 7. Kg7 La2 8. Kh6 g5+ 9. Kh5 Lb1 10. Kg4 La2 11. Kf3 Lb1 12. Kxe4 La2 13. Kxe3 Lb1 14. Kd2 La2 15. Kc1 Lb1 16. Kb2 La2 17. Kxa1 Lb1 18. Kb2 La2 19. Kxc2 Lb1 20. Kxb3 Lxg6 21. Kc4 Lh7 22. Kd5 g6 23. Kxe6 g7 24. Kf7 g8=D#
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vergleiche P1110452

[MD 1315]

Autoren:
Verbesserung von Aufgabe H3382 „THE PROBLEMIST“ Juli 2010

Wir sehen in dieser Aufgabe folgenden Inhalt:
1) Erhalt weißer Masse (wBg4).
2) Beseitigung hinderlicher weißer Masse (wBe3 & wBe4)
3) Das Matt mit sKa4 ist nicht möglich, weil Weiß für das Mattbild einen Zug zu viel benötigen würde.

Des Weiteren enthält diese Aufgabe meines Erachtens, wie schon erwähnt, sage und schreibe DREI Weltrekorde.
Also:

Rekord Nummer eins:
Längster schwarzer Königsmarsch am Stück in einem orthodoxem Hilfsmatt = 24 Züge.

Rekord Nummer zwei:
Zuglängste Darstellung eines schwarzen Durbars in einem orthodoxem Hilfsmatt = 24 Züge.

Rekord Nummer drei:
Zuglängster Rundlauf des schwarzen Königs in einem orthodoxem Hilfsmatt = 21 Züge.

Die beiden ersten Rekorde befinden sich schon in der Originalversion, die 2010 veröffentlicht wurde. Der dritte Rekord (längster Rundlauf des schwarzen Königs im orthodoxen Hilfsmatt) ist nun auch noch hinzugekommen.

Wahrscheinlich ist diese Aufgabe auch schwer zu lösen, weil der Löser versucht, den Quadrupelbauern abzuräumen, damit sich Schwarz einen Springer erwandeln kann, vergebens …

Christopher J. A. Jones brachte die verbesserte Version als Einleitung der Hilfsmatt-Urdruck-Serie im März-Heft 2018, sehr ordentlich besprochen, in Englisch.
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-28)
comment
Keywords: Round Trip (maximal, 21 Züge), Durbar Theme (schwarz), Promotion in the mating move (D)
Genre: h#
FEN: 8/4p3/1p2P1p1/1P2P3/1pk1P1P1/1Pp1P1p1/2P3p1/NB4Kb
Input: Felber, Volker, 2018-10-10
Last update: Felber, Volker, 2020-10-28 more...
51 - P1358618
Jorma Pitkänen
11696 feenschach 227 11-12/2017
Version
P1358618
(9+5) C+
s#9
1. d8=S! g5 2. b5 g4 3. b7 Ka7 4. b8=T g3 5. Se6 fxe6 6. f7 e5 7. d5 e4 8. f8=D e3 9. Df2 exf2,gxf2#
play all play one stop play next play all
Version zu P1343954
Gunter Jordan: Lt. Hans Gruber erschien diese Aufgabe in feenschach 227 (2017), tatsächlich erschienen im März 2018. Somit ist feenschach die Erstquelle (sofern die Aufgabe nicht noch irgendwo drittveröffentlicht wurde). Ich habe hier die Erstquelle auf feenschach geändert. Die ursprüngliche 'Erstquelle' The Problemist habe ich als Reprint eingegeben. [GJ] (2020-10-30)
comment
Keywords: Kindergarten Problem, under-promotion (S,T), Promotion (D), under-promotion in the key (S), Multiple publication, Pawn mate, Antiphönix, Pinning, Flight taking
Genre: s#
Computer test: Gustav 4.0c
FEN: k7/2PP1p2/1P3Pp1/8/1P1P4/3p4/3Pp1P1/4K3
Reprints: S2678c The Problemist 26-9, p. 363, 05/2018
Input: Felber, Volker, 2018-12-11
Last update: Gunter Jordan, 2020-10-30 more...
52 - P1368575
Stefan Wojcik
122 Szachy 11/1957
P1368575
(2+2)
Gewinn
1. Kg5! b5 2. Kf4 Kf2 3. h4 Ke2 4. Ke4 Kd2 5. Kd4,Kd5 Kc2 6. Kc5 Kc3 7. h5! b4 8. h6 b3 9. h7 b2 10. h8=D+ gewinnt
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Autor: Stefan Wójcik, Bielsko-Biala, Polen
Diese Studie hat 14. Platz im Polnischen Championat 1957-1960 in der Abteilung Studien belegt.
Der Autor wurde mit 7 Punkten auf dem 6.-7. Rang platziert. Gewonnen hat Grzegorz Grzeban 82,5 P. vor Wlodzimierz Proskurowski 78 P. und Edward Pallasz 14 P.
(Quelle: "Szachy" 05/1962)
Pawel: Please correct the description. Namely:
I know this chess composition. The author is Stefan Wójcik, not Sylwester.
The author is my grandfather.

Best wishes,
Pawel Wójcik (2020-11-25)
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comment
Keywords: Kindergarten Problem, Promotion
Genre: Studies
FEN: 8/8/1p5K/8/8/7P/8/6k1
Reprints: 538 Problemista 10/1963
Input: Marcin Banaszek, 2019-10-27
Last update: Marcin Banaszek, 2020-11-30 more...
53 - P1372653
Ottó Titusz Bláthy
37 Vielzügige Schachaufgaben , p. 41, 1890
P1372653
(9+9)
#108
1. Kd2 Ka7 2. Kc1 Kb8 3. Kb1 Ka7 4. Ka1 Kb8 5. Ka2 Ka7 6. Ka3 Kb8 7. Kb4 Ka7 8. Ka5 f6 9. Kb4 Kb8 10. Ka3 Ka7 11. Ka2 Kb8 12. Ka1 Ka7 13. Kb1 Kb8 14. Ka2 Ka7 15. Ka3 Kb8 16. Kb4 Ka7 17. Ka5 f5 18. Kb4 Kb8 19. Ka3 Ka7 20. Ka2 Kb8 21. Ka1 Ka7 22. Kb1 Kb8 23. Ka2 Ka7 24. Ka3 Kb8 25. Kb4 Ka7 26. Ka5 g6 27. Kb4 Kb8 28. Ka3 Ka7 29. Ka2 Kb8 30. Ka1 Ka7 31. Kb1 Kb8 32. Ka2 Ka7 33. Ka3 Kb8 34. Kb4 Ka7 35. Ka5 g5 36. Kb4 Kb8 37. Ka3 Ka7 38. Ka2 Kb8 39. Ka1 Ka7 40. Kb1 Kb8 41. Ka2 Ka7 42. Ka3 Kb8 43. Kb4 Ka7 44. Ka5 h6 45. Kb4 Kb8 46. Ka3 Ka7 47. Ka2 Kb8 48. Ka1 Ka7 49. Kb1 Kb8 50. Ka2 Ka7 51. Ka3 Kb8 52. Kb4 Ka7 53. Ka5 h5 54. Kb4 Kb8 55. Ka3 Ka7 56. Ka2 Kb8 57. Ka1 Ka7 58. Kb1 Kb8 59. Ka2 Ka7 60. Ka3 Kb8 61. Kb4 Ka7 62. Ka5 f4 63. Kb4 Kb8 64. Ka3 Ka7 65. Ka2 Kb8 66. Ka1 Ka7 67. Kb1 Kb8 68. Ka2 Ka7 69. Ka3 Kb8 70. Kb4 Ka7 71. Ka5 h4 72. Kb4 Kb8 73. Ka3 Ka7 74. Ka2 Kb8 75. Ka1 Ka7 76. Kb1 Kb8 77. Ka2 Ka7 78. Ka3 Kb8 79. Kb4 Ka7 80. Ka5 f3 81. Kb4 Kb8 82. Ka3 Ka7 83. Ka2 Kb8 84. Ka1 Ka7 85. Kb1 Kb8 86. Ka2 Ka7 87. Ka3 Kb8 88. Kb4 Ka7 89. Ka5 h3 90. Kb4 Kb8 91. Ka3 Ka7 92. Ka2 Kb8 93. Ka1 Ka7 94. Kb1 Kb8 95. Ka2 Ka7 96. Ka3 Kb8 97. Kb4 Ka7 98. Ka5 b4 99. Kxb4 a3 100. bxa3 Kxa6 101. b8=T Ka7 102. Tb6 Ka8 103. Ka5 Ka7 104. Tb1 Ka8 105. Kb6 Kb8 106. Td1 Kc8 107. Td6 Kb8 108. Td8#

100. ... Kb8 101. Kxc4 Kc7 102. Kd4 Kb8 103. Ke5 Kc7 104. a4 Kb8 105. Kd6 Ka7 106. Kc7 Kxa6 107. b8=D Ka5 108. Da7#,Da8#

Der Versuch 1. Kd4? Kc7 2. Ke5 findet in 2. ... b4! seine Widerlegung.
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Superseded by P1382048
James Malcom: I believe that this is the record for the longest Kindergarden problem! The second longest that I know of is P1299269. (2020-02-14)
James Malcom: Actually, as it turns out, this is superseded by P1382048, with a total of four whole moves. (2020-11-18)
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comment
Keywords: Sea Snake, Kindergarten Problem, Move Length Record, Promotion (T,D), under-promotion
Genre: n#
FEN: 1k6/1P3ppp/P1p5/1pP5/p1p3p1/2P1K1P1/1P3P1P/8
Input: James Malcom, 2020-02-14
Last update: James Malcom, 2020-11-18 more...
54 - P1373415
Noam D. Elkies
chess.stackexchange.com 12/3/2020
P1373415
(6+11)
#20
1. Sg5+! hxg5 2. Kf3 Kh6 3. Kg2 Kh7 4. Kxh1 Kh6 5. Kg2 Kh7 6. Kf3 Kh6 7. Ke4 Kh7 8. Kd5 Kh6 9. Kc6 Kh7 10. Kb7 Kh6 11. Kxa7 Kh7 12. Kxa6 Kh6 13. Kxa5 Kh7 14. Kxa4 Kh6 15. b4 Kh7 16. b5 Kh6 17. b6 Kh7 18. b7 Kh6 19. b8=D Kh7 20. Dh2#
19. ... Lh7 20. Df8#
play all play one stop play next play all
https://chess.stackexchange.com/a/28841/15543
James Malcom: This is a wildly original problem as far as I can tell. Any anticipations or similar problems? (2020-03-14)
Gerald Ettl: 19.-Lh7 20.Df8#,Dh2# unbedeutender Dual. (2020-03-15)
Olaf Jenkner: Kein Dual, weil 19 ... Lh7 nicht die Drohung Dh2# pariert. (2020-03-15)
Gerald Ettl: Ich bezog mich auf das Wort -Dual- auf den ogigen Kommentar. (der jetzt geloescht ist) (2020-11-18)
Gerald Ettl: Ja, es ist kein Dual. (2020-11-18)
comment
Keywords: Checking key, Excelsior, Sacrifice key, Promotion
Genre: n#
FEN: 6bn/p4p1k/p4Ppp/p7/p3K1P1/P4N2/1P6/7n
Input: James Malcom, 2020-03-14
Last update: Alfred Pfeiffer, 2020-03-14 more...
55 - P1374643
James Malcom
PDB Website 14/4/2020
“Egg Five”
P1374643
(5+2)
s#1
(-:
1. hxg8=sB! g7#
play all play one stop play next play all
Henrik Juel: Here the extra joke is that the (dummy) pawn can move (2020-04-14)
James Malcom: The newly born black pawn is not a dummy pawn, in my opinion. Unlike the dummy, it still has the right to move foward in principal. Since it is new and has never moved, it sill has the right to make a double-step if allowed, as in Horde Chess (https://lichess.org/variant/horde). (2020-04-14)
Henrik Juel: I see your point, James (2020-04-15)
James Malcom: Seems that Gerd might have missed including pawns promoting to opposite color pawns the new update. I'll email him tomorrow morning. With accordance to the rules, they have 4 first moves as a 7th rank pawn does. (2020-05-03)
Gerd Wilts: Promotions to pawns are now also supported. (2020-05-03)
James Malcom: Many thanks Gerd! (2020-05-03)
A.Buchanan: I had missed these 6 miniatures: they are terrific! Can I ask to replace Sg8 in this one with L so that it's not giving check in the starting position. I guess it's kind of crass though economical to replace with pawn! (2020-10-13)
A.Buchanan: Dummy pawns can in principle move imho: it's just that they're usually blocked by the edge of the board. If one was teleported somewhere else on the board by some mechanism, then they would just start moving. So completely different kind of animal from a dummy, which genuinely cannot move :D (2020-10-13)
comment
Keywords: Joke, Joke promotion, under-promotion (b)
Genre: s#
FEN: 6nk/7P/6PK/6PP/8/8/8/8
Input: James Malcom, 2020-04-14
Last update: James Malcom, 2020-06-02 more...
56 - P1375286
Andrew Buchanan
James Malcom

PDB Website 30/4/2020
P1375286
(6+3)
#2
(-:
1. dxc7ep! b4 2. c8=D,T#

R: 1. ... c8-c6?! and earlier c8=sB
play all play one stop play next play all
Superseded by P1380851

Related: http://www.matplus.net/start.php?px=1577108437&app=forum&act=posts&fid=xshow2&tid=2395

The 2018 FIDE laws state: "3.7.2 on its first move the pawn may move as in 3.7.1 or alternatively it may advance two squares along the same file, provided that both squares are unoccupied."

Hence Black's newborn 8th rank pawn, which has never been moved before, reserves the right to commence a double-step on its first move, and likewise White receives the right to capture it en passant as they do with a 7th rank pawn.
Henrik Juel: This un-dummy-pawn is like a pawn created on c8 by the Einstein condition
The retroplay looks wrong, what about 1... d8-d6!? 2.d7-d8=sB!? c6xYb5 (2020-04-30)
James Malcom: That makes much more sense Henrik. I have edited it accordingly. (2020-04-30)
A.Buchanan: You don't like Adrian's (: haha? What about :) then? In heraldic terms, it would be described as "regardant". See 270 on https://www.heraldica.org/cgi-bin/atlas.pl?12. I don't know the word for "non-regardant", which is the default direction for the head, e.g. most of the others on that page.
We could replace wBa6a7 with wSa6, but alas having the 3rd knight is non-thematic & distracting. The other thing I would've liked to do is empty b2 so the promotion is forced to be to D. Such a tiny problem should have precision promotion. Needs more thinking. (2020-05-01)
James Malcom: UPDATE: The position has been edited to have one less piece and a precise queen promotion. (2020-10-12)
A.Buchanan: There is dialogue here which is now orphaned by a change of diagram with new matrix. Suggest we revert to the older diagram and mark it superseded by a new PDB entry here (2020-10-12)
James Malcom: I agree-it is now done. (2020-10-12)
more ...
comment
Keywords: En passant, En passant as key, Joke, Joke promotion (b), Tolerated dual promotion (D/T), Promotion (D, T), Superseded by (P1380851)
Genre: 2#, Retro
FEN: k7/PN1N4/PKpP4/1p6/8/8/8/8
Input: James Malcom, 2020-04-30
Last update: A.Buchanan, 2020-10-12 more...
57 - P1375440
Andrew Buchanan
17465v Die Schwalbe 291, p. 492, 06/2018
Rewan Demontay gewidmet
P1375440
(3+4) C+
h#6
White Dummy f2
1. c1=DU Lxe7 2. d3 Kf1 3. d2 Ke2 4. d1=L Kd2 5. Lb3 Kxc1 6. La2 Lf6#
play all play one stop play next play all
Added 1 Dummy to P1359493, and changed the dedicatee. My luck with this little series continues to hold: the dedicatee's surname begins with a D!
James Malcom: Andrew, I just found this today-I thank you very much, but perhaps it holds no more, for my true name is known now! (2020-10-28)
comment
Keywords: Miniature, Promotion in the key (du), Schnoebelen Theme (du), Prentos Theme (du), Ceriani-Frolkin Theme (du), Promotion (du,l), Bartel-Thema (du)
Pieces: i = Dummy (DU)
Genre: h#, Fairies
Computer test: Popeye 4.81
FEN: 8/4p3/5B2/8/3p4/8/2p2I2/k5K1
Input: A.Buchanan, 2020-05-03
Last update: A.Buchanan, 2020-10-29 more...
58 - P1375777
James Malcom
PDB Website 10/4/2020
nach Josef Cumpe
P1375777
(1+8)
Last two moves?
(-:
R: 1. 0-0-0# a7-a8=sT
play all play one stop play next play all
See P1234039
Henrik Juel: Missing Joke keyword, I guess (2020-05-11)
A.Buchanan: Curious that retro a7-a8=sT discomforts the animation still - maybe you should report to Gerd? (I trouble him with enough stuff already - don't want to be the only one emailing him! :-) (2020-05-11)
A.Buchanan: Maybe +sBe7f7 to refute R. ... e8=sK/fxe8=sK :-) Note this "cook" is actually prevented in the original. (2020-05-11)
A.Buchanan: Oops and a more major cook R: 1. Se8/g8-f6+ (2020-05-11)
James Malcom: This problem was only half-finished before I fell asleep. It’s fixed now. (2020-05-11)
A.Buchanan: Great! You could save another piece I think -sLg6, -sBf7, + sDf7. This also removes the obtrusive promotion (2020-05-11)
James Malcom: Yes, that is true. Position edited. (2020-05-11)
James Malcom: I see nothing wrong with fiddling if it improves economy. (2020-05-11)
A.Buchanan: If promotion to Bl unit is allowed, can’t Bl just have played e8xd7+ or g8xh7+? Can replace bPd7 with bR but eliminating bPh7 is more complicated. Need +wPh7 +bPg6h6. And also bRb7 to prevent discovered check by bPc8 prior to e7-e8=bK. I think that’s watertight now! :-) (2020-10-13)
A.Buchanan: The issue is that there are two or three levels of Bl promotion joke: this problem relies on the "basic" joke where black officers can be created. But where's the line to stop us promoting to Bl pawn or king? If we go that far, then a position like this 2kr3K/1r1r1qrR/7p/8/8/8/8/8 is required. Oh dear: sorry to have brought it up :( (2020-10-13)
more ...
comment
Keywords: Castling in the retro play, Promotion in the retro play (t), Rex solus (w), Joke, Joke promotion, Type C
Genre: Retro
FEN: 2kr3K/1p1ppqrp/8/8/8/8/8/8
Input: James Malcom, 2020-05-11
Last update: Alfred Pfeiffer, 2020-10-14 more...
59 - P1377133
Robert Norman
Jens Kristiansen

Far off Chess 13/12/2008
RN, Version JK
P1377133
(3+6) C+
#4
1. Kf7! droht 2. Txh5#
1. ... Sd6+,Sd8+ 2. g7+ Kh7 3. g8=D+ Kh6 4. Dg7#
play all play one stop play next play all
A beautiful version of P1377131

http://faroffchess.blogspot.com/2008/12/in-twilight-zone-of-chess-rules.html

"Ok, you may say that this is all old stuff, very entertaining but with no relevance for nowadays chess. So? Well, look at this endgame study which circulated among the chess insiders in the 80s:

White to move and win - my version (from memory)

I believe I have read somewhere that the composer is from Dar-Es-Salaam, but I can not find sources for that.

The solution is: 1. Kf7, Nd6+ 2. g7+!, Kh7 3. g8D+ and mate next move.

Then you may object that white is in check, in fact a double check, when he unaffectedly moves his little pawn at the second move. Yes, he is in check BEFORE the move, but is he after? You see, at that time the rules stated that the king is in check "...when the square it occupies is threatened by one or TWO of the opponents pieces." So the check is elegantly parried by making the kings square threatened by THREE pieces!

Relax, nowadays the rules state that the square in question must be threatened by "... if one or more of the opponents pieces."
James Malcom: What is the Winchloe solution then, even with duals? Of course, as an endgame study, it is still correct. (2020-11-13)
A.Buchanan: As a #4, WinChloe gives: 1.Rf7! [2.T×h5‡]
1…Cd8+ 2.g7+ Rh7 3.g8=D+ Rh6 4.Dg7‡
1…Cd6+ 2.g7+ Rh7 3.g8=D+ Rh6 4.Dg7‡
Switchback blanc
Switchback de Pion
Echecs croisés
Guidelli
Echec double
Batterie noire
Auto-clouage indirect
Déclouage indirect
Promotion
Clé désampliative (2020-11-26)
more ...
comment
Keywords: Golden Age, Joke, Bosma, Promotion (D)
Genre: n#
Computer test: C+ WinChloe v3.51
FEN: 7k/rn6/5KP1/p1p4b/8/8/8/7R
Input: James Malcom, 2020-06-20
Last update: A.Buchanan, 2020-11-26 more...
60 - P1377604
John Derek Beasley
14 Variant Chess 20, p. 215, 1996
P1377604
(3+4)
White to play and win
Grashopper Chess
b) wBa7->b7
wDU,sDU=Grashüpfer
a) 1. a8=G#
b) 1. b8=sG! Gh8 2. Kf1 Gf8 3. Ge8 Gd8 4. Gc8 Gb8 5. Ga8#
play all play one stop play next play all
A.Buchanan: Why not sBh3 on h2, removing sTh2? (2020-10-21)
Arnold Beine: Then there is a solution in b) without joke: 1.Kf1 Ga8 2.bxa8=L#. (2020-10-21)
A.Buchanan: Thanks Arnold - I had a blind spot there, but knew there had to be a reason. In a), 1. a8=sG! also wins but not so quickly. More interestingly, I think b) 1. Kf1 Ga8 2. b8=Q! Gc8 3. Qxc8! wins the pawn or 2. ... Rg7 3. Gxa8+! R~ 4. Qb7++! Maybe someone can check this indeed win for White. (2020-10-22)
Arnold Beine: There is no need for checking 2.b8=Q!??, because Q-promotions are not allowed in Grashopper Chess. (2020-10-23)
A.Buchanan: Thanks so now we’ve found an explanation of why it is defined to be grasshopper chess! A lot of time and effort can be saved in chess composition if the default format is “no-cook chess” - a fairy format in which all unintended solutions and defences are by definition illegal! :) (2020-10-24)
more ...
comment
Keywords: Grasshopper Chess, Joke, Joke promotion (sG)
Pieces: du = Grasshopper (G)
Genre: Fairies, Studies
FEN: 6*2Q1/P7/8/8/8/7p/6*2qr/4K2k
Reprints: 6.2 51 Flights Of Chess Fancy 2009
Input: James Malcom, 2020-07-06
Last update: James Malcom, 2020-10-22 more...
61 - P1379953
Mirko Degenkolbe
Steven B. Dowd
Rolf Wiehagen

Chorno-bili stezhyny 2009
P1379953
(9+8) cooked
h#18
1. Kc7 La2 2. Kd8 Lb1 3. Ke8 La2 4. Kf8 Lb1 5. Kg8 La2 6. Kh7 Lb1 7. Kh6 La2 8. Kg5 Lb1 9. Kf4 La2 10. Ke3 Lb1 11. Kd2 La2 12. Kxc2 Lb1+ 13. Kxb3 La2+ 14. Kc2 Lxd5 15. Kxd3 Lxf7 16. Ke4 Lg8 17. Kxf5 f7 18. Ke6 f8=D#
play all play one stop play next play all
Cook: NL: 1. Kc7 La2 2. Kd8 Lb1 3. Ke8 La2 4. Kf8 Lb1 5. Kg8 La2 6. Kh7 Lb1 7. Kh6 La2 8. Kg5 Lb1 9. Kf4 La2 10. Ke3 Lb1 11. Kd2 La2 12. Kxc2 Lb1+ 13. Kxb3 La2+ 14. Ka4 Lxd5 15. Kb5 Le6 16. fxe6 f7 17. Kc6 f8=D 18. Kd5 Dc5#
[MD 1547]
[Fussnote MD: Laut WINCHLOE und Christian Poisson gibt es eine Inkorrektheit: 14.Ka4 Lxd5 15.Kb5 Le6 16.fxe6 f7 17.Kc6 f8D 18.Kd5 Dc5#. In meinen alten Unterlagen fand ich, dass die Auffaserung der Lösung im 14.Zuge von den Autoren gewollt war. Sei es wie es sei: Wir haben nun eine korrekte Fassung der Idee gebaut in exakt 20 Zügen, die demnächst in PROBLEMIST UKRAINI als Urdruck erscheinen wird. Da Co-Autor SBD nicht mehr befragt werden kann (uns antwortet er seit fast sechs Jahren nicht mehr ...), sollten wir also die Sache auf sich beruhen lassen und mit dem H#20 findet sie dann auch einen der Idee gebührenden guten und schönen, „wohlverdienten“ Abschluss.]
Frank Richter: Das sind sicherlich 2 Varianten, 2009 einen derartigen Cook zu übersehen, halte ich bei den Autoren für ausgeschlossen. (2020-09-16)
Mario Richter: unterm Diagramm steht "C+", bei den Lösungen sind beide Varianten aufgeführt, allerdings fehlt bei der Forderung die Angabe "2 Varianten" (wie würde das notiert werden?!), auch in den nachfolgenden Ausgaben keine Korrektur/Präzisierung;
Resüme: nicht "cooked"! (2020-09-20)
Henrik Juel: The standard way of stipulating more than one solution in a h#
1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.2.1.1.1.1.1.1.1.1.1
with 26 ones before the 2, and 9 ones after the 2 (2020-09-20)
comment
Keywords: Promotion in the mating move (D)
Genre: h#
FEN: 8/3p1p2/3k1P2/3p1P2/1p1P4/1PpP2p1/2P3Pp/1B5K
Input: Felber, Volker, 2020-09-15
Last update: Felber, Volker, 2020-11-09 more...
62 - P1380109
Theodor Steudel
1264 Rochade Europa 01/1996
P1380109
(3+4)
h=6
wSU=Nachtreiter
1. c1=N Nc3 2. Nxg3 Kxg3 3. g1=N Kf4 4. Ne5 Kxe5 5. f1=N Kd6 6. Nc7 Kxc7=
play all play one stop play next play all
Anton Baumann: Korrektur: wSU=Nachtreiter (2020-11-18)
comment
Keywords: Promotion in the key (fairy)
Pieces: su = Nightrider (N)
Genre: Fairies
FEN: k7/8/8/8/8/6P1/2p2ppK/6*2N1
Input: Marcin Banaszek, 2020-09-20
Last update: Marcin Banaszek, 2020-11-18 more...
63 - P1380112
Leonid Makaronez
1554 Rochade Europa 01/1996
P1380112
(10+12)
#3
1. Lc2-a4! droht 2. f7-f8=D+, 2. f7-f8=L+
1. ... Lf2-h4 2. Dh2-b2 droht 3. Se5-c4#
2. ... c5-c4 3. Db2-d4#
2. ... Dg7xe5 3. Db2xe5#
2. ... Dg7xf7 3. Se5xf7#
1. ... c5-c4 2. d3-d4 droht 3. Se5xc4#
2. ... Dg7xe5 3. f7-f8=D#, 3. f7-f8=L#, 3. Dh2xe5#
1. ... Th5xf5 2. Dh2-h6+ Tf5-f6 3. Se5-c4#
2. ... Dg7-f6 3. f7-f8=D#, 3. f7-f8=L#
2. ... Dg7xh6 3. Se5-c4#
2. ... Dg7-g6 3. Dh6-f8#, 3. Se5-c4#
play all play one stop play next play all
Henrik Juel: Damaged by mate duals (2020-09-23)
comment
Keywords: Promotion in the mating move (D,L), under-promotion (L)
Genre: 3#
FEN: 4R3/3p1Pqp/nP1k4/2p1NP1r/1p2P3/3Pp3/p1B2b1Q/K5n1
Input: Marcin Banaszek, 2020-09-20
Last update: Alfred Pfeiffer, 2020-09-22 more...
64 - P1380121
Zalmen Kornin
Kibitzer's Cafe 29/7/2004
P1380121
(5+3)
#3
1. g8=D! Kc2 2. Sxc3 Kd3,Kb2 3. 0-0-0#,Da2#
1. ... axb1=D 2. Da2,Db3 Dxa1 3. Le3#
play all play one stop play next play all
https://www.chessgames.com/perl/chessforum.pl?kpage=566&archive=1#kibitzing

"On the subject of a mate in 3 that i showed yesterday here [ P1380114], the duals pointed out kindly by were detected too by T. Krabbé and Joshua Green, and there in "Open Chess Diary" J. Green suggests adding a White Pawn in 'a3', so the Problem is correct, but no longer a miniature and not diverse enough from an earlier MacDowell & Green setting; so the Author (my Chess friend) presents a new "Belén-Theme"- Mate in 3 - Author: Z. Kornin "The Kibitzer's Café" 2004 , Original: White: Ke1 - Ra1 - Bd4 - Nb1 - Pg7, Black: Kc1 - Pa2 - Pc3 #3 (5+3); or in Forsyth: 8-6P1-16-3B4-2p5-p7-RNk1K3 #3"
See the later P1380122
Henrik Juel: A small hint, James:
.. 2. Sxc3 Kd3 3. 0-0-0#
2. ... Kb2 3. Da2#
will force the weird animation to show what you intend it to show (2020-09-21)
James Malcom: I know how to do that Henrik-it is but my intention to animate the thematic line only. (2020-09-21)
comment
Keywords: Belen Theme, Promotion in the key, Castling as mating move
Genre: 3#
FEN: 8/6P1/8/8/3B4/2p5/p7/RNk1K3
Input: James Malcom, 2020-09-21
Last update: Alfred Pfeiffer, 2020-09-22 more...
65 - P1380122
Zalmen Kornin
Kibitzer's Cafe 5/8/2004
P1380122
(9+5) C+
#4
1. g8=D! d5 2. exd6ep Kc2 3. Sxc3 Kd3,Kb2 4. 0-0-0#,Dxa2#
play all play one stop play next play all
Final development of the earlier P1380121

https://www.chessgames.com/perl/chessforum.pl?kpage=587&archive=1#kibitzing

"For those interested in Chess Problems: In Tim Krabbé's "Open Chess Diary" the investigation on an idea in Composition, the so called "Belén-Theme" goes on with more novelties; - i'm arriving from that chess-cyber-café... i found that Problemist, he asked me "do You know the Valladão-Theme?" - Yes, i knew that jargon: "The Problem is pronto" What? "Ready" He showed me and asked me to publish here (is related to the previous ones) Author: Z. Kornin; "The Kibitzer's Café" 2004, Original - White: Ke1, Ra1, Bd4, Nb1, Pb6, Pc5, Pe5, Pg4, Pg7 (9); Black: Kc1, Pa2, Pc3, Pc6, Pd7 (5) - Mate in 4 , or in Forsyth: 8-3p2P1-1Pp5-2P1P3-3B2P1-2p5-p7-RNk1K3 (9+5) #4 < the key introduces a threat against 'a2', 'b3' and 'c4' , there are two related thematical variations, following a scheme aAbB - bBaA in the second and third moves; the sideline defenses 2...axb1 or 2...Kb2 in the 1...d5 variation are not total stops from the initial threats; in the en-passant moment there's a choice too: 3.cxd6 ep? c5! and Black will not fall in zugzwang; so 3.exd6!! - this effects springs from a natural setting - the Pawn 'c6' is necessary to stop an eventual Qxd5... Pawns 'b6' and 'g4' prevents duals in thematical play, other features are similar to the Author's scheme from "The Kibitzer's Café" July, 29 - see above Page 566.> The last chapter from a Chess-Composition workshop on-line!!"

Konig and Turm: ""Noch im Jahr der Thema(*)-Entdeckung (*the Belén) gelang dem Brasilianer Kornin eine Darstellung mit dem Valladão-Task" Hanspeter Suwe (2007);" (quote taken from here-https://www.chessgames.com/perl/chessuser?uname=vonKrolock)

Tim Krabbe's minuscule mention in #253 in a small edit to the 7/28 P.S: "(NB: see pages 566 [P1380121 ] and 587 of that forum for the on-line development of a Valladao-Belén.)"


http://www.berlinthema.de/Auswahl_PH.pdf-"Das Belén-Thema verlangt den schwarzen Königsmarsch von c1 nach d3 gefolgt von der weißen langen Rochade – wie P.H. richtig anmerkt, sollte man besser von einem „Motiv“ sprechen. Kornins Stück verbindet dieses Motiv vermutlich erstmalig mit einem Valladao.
Auf mich wirkt ein Valladao mit Damenumwandlung allerdings immer „halb“, denn der „eigentliche“ Sonderzug ist doch eine Unterverwandlung? Eine solche würde auch einen selbstverständlichen Schlüssel verhindern."
James Malcom: This is the first Valladao-Belen: the Belen theme plus promotion and en passant. (2020-09-21)
Henrik Juel: Only the cases with Black defending by d7-d5 and Kc1-c2 in his first two moves lead to dual-free full-length variations (2020-09-21)
comment
Keywords: Belen Theme, Valladao Task, En passant, Promotion in the key, Castling as mating move
Genre: n#
FEN: 8/3p2P1/1Pp5/2P1P3/3B2P1/2p5/p7/RNk1K3
Reprints: H48a Der Reiz des Ungewöhnlichen
König & Turm 22, p. 14, 5/2007
(15) MatPlus.net Forum 8/9/2019
Input: James Malcom, 2020-09-21
Last update: James Malcom, 2020-10-27 more...
66 - P1380158
James Malcom
chessproblem.net 14/10/2019
P1380158
(7+8) C+
#3
1. b8=D? Lb3!

1. Lxa2+! Kc2 2. b8=D Kxd3 3. 0-0-0#
2. ... e2,~ 3. Db1#
1. ... Kb2 2. b8=D+ Kxa1 3. Db1#
2. ... Kxa3 3. Lb1#,Lxc4#
2. ... Kc2 3. Db1#
play all play one stop play next play all
https://www.chessproblem.net/viewtopic.php?f=7&t=60&p=2362
Henrik Juel: C+ Popeye 4.61, except for the mate dual after 2... Kxa3 (2020-09-22)
comment
Keywords: Belen Theme, Capture key, Checking key, Promotion, Castling as mating move
Genre: 3#
Computer test: Popeye 4.61
FEN: 8/1P6/8/8/2ppp3/P1pPp1n1/b7/RBk1K1N1
Input: James Malcom, 2020-09-22
Last update: James Malcom, 2020-09-23 more...
67 - P1380353
James Malcom
Guus Rol

www.chess.com 15/7/2020
P1380353
(11+11) C+
#4
1. d8=L!
1. ... Tb8 2. cxb8=L! d4 3. Le5 Lxf4+ 4. Lxf4#
1. ... Txd8 2. cxd8=S! d4 3. Se6 Lxf4+ 4. Sxf4#
1. ... Ta8 2. h8=D! Txd8 3. Txe3+ Kxe3 4. De5#
2. ... d4 3. Dxd4 ... 4. Dxe3#,Txe3#
1. ... Txc7 2. Lxc7 d4 3. Le5 Lxf4+ 4. Lxf4#
1. ... d4 2. Sc4 ... 3. Txd2+ Ke1 4. Lxf2#
play all play one stop play next play all
https://www.chess.com/forum/view/more-puzzles/a-challenging-mate-in-5-can-you-find-the-first-move?page=3
Henrik Juel: C+ Popeye 4.61 (except for a mate dual) (2020-09-27)
more ...
comment
Keywords: under-promotion in the key (L), Promotion (D), under-promotion (S)
Genre: n#
Computer test: Popeye 4.61
FEN: 2r1R3/2PP3P/1N5K/1P1p4/1p3P2/1B1pbp2/3pkrp1/3R1bB1
Input: James Malcom, 2020-09-27
Last update: A.Buchanan, 2020-10-13 more...
68 - P1380368
James Malcom
MatPlus.net Forum 22/9/2020
Gewidmet Zalmen Kornin & Peter Hoffmann
P1380368
(14+9) C+
#7
1. Sc3+! Kc2 2. exd4 hxg1=D+,T+ 3. Txg1 Lxh5 4. g4 fxg3ep 5. Txg3 Lg4 6. Txg4 Kd3 7. 0-0-0#
play all play one stop play next play all
http://matplus.net/start.php?px=1601242024&app=forum&act=posts&fid=gen&tid=2488

http://www.berlinthema.de/Auswahl_PH.pdf-"J.M. arbeitete weiter am Valladao-Belén und konnte ihn schließlich gemischtfarbig zeigen! Den „Umwandlungsdual“ halten wir für irrelevant, da ohne Pattmotiv die Turmumwandlung kein eigenständiger Zug ist. Und wir anerkennen durchaus die Pionierleistung! Andererseits ist ein ungedecktes Satzmatt eine sehr häßliche Konstruktionserleichterung."
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comment
Keywords: Belen Theme, Valladao Task, Checking key, En passant, Promotion, under-promotion (t), Castling as mating move
Genre: n#
Computer test: Popeye 4.61
FEN: 8/5B2/6P1/3P3Q/2pq1pb1/Bp2Pp2/pP3PPp/RNk1K1NR
Reprints: H48j Der Reiz des Ungewöhnlichen 9/2020
Input: James Malcom, 2020-09-27
Last update: James Malcom, 2020-10-28 more...
69 - P1380523
Nels H. Nelson
760 Los Angeles Times , p. 30, 28/3/1937
"April Fool Joke"
P1380523
(9+5)
#3
1. gxh6ep+! Kxf7 2. 0-0xg1! Sf6 3. e8=sS#!
play all play one stop play next play all
28/3/1937-https://www.newspapers.com/clip/25408700/chess-by-herman-steiner/

"NELS NELSON

We have heretofore published many of Nelson's fine problems and should like to show any readers the more humorous side of his talent. This winter our distinguished friend is spending his vacation in Los Angles. It is with his kind permission that we are publishing this story and problem.

Nels Nelson, born in Denmark in 1871, emigrated to the United States when 12 years of age. He learned the moves of chess in Denmark and began solving and composing problems in 1894. He was chess editor of the Minneapolis State Chess Asccostion, 1911-1912, president of the Minnesota State Chess Asccostion, 19229-1930, and lives at Hopkins, Minn., a suburb of Minneapolis.

AN APRIL FOOL JOKE

A certain celebrated chess master, who we will designate as Mr. "X," while on in the provinces happended into a tavern which was the mecca of the village chess players. Mr. "X," very fond of practical jokes, concieved a plan of sprining on one of the unsuspecting natives. Professing ignorance of the game, the champion of the club offered to teach Mr. "X" its intricacies. After showing Mr. "X' all of the moves with the exception of pawn promotion, pawn takes pawn, etc., and castling, the champion said the following: ""I have purposely ommited three of the manuvers in chess, which to the beginner are somewhat difficult to grasp. They are pawn promotion-when a pawn reaches the eigth rank it ceases to be a pawn but may but it may be converted to any piece on the board and assumes its function at once. It it thus theortically possible to have as many as nine queens on the board at once, and so on down the line." The champion then went to explain the castling on the king and queen side and emphasised the importance of moving the king first. The act of pawn takes pawn "en passant" was then throughly explained and the actual game started with the champio givng odds of queen to Mr. "X," who proved to be a very apt pupil! Mr. "X" lost the first game in short order-walking boldy into a mating net. In the second game he gave the champion quite the battle and won the approbation of that was worthy. In the third game, the champion managed to trap Mr. "X's" queen but had to give up two pieces for it and saw that he had a lost game but continued on in the hope that his expierenced opponent would make some mistake. When the game has reached the postion in the diagram the champion was dumbfounded to hear Mr. "X" announce mate in three moves. "Impossible!" exclaimed the champion. "You should win, of course, but mate in three cannt be done." "Well, if you have interpreted the move and rules correctly, I am certain I see a mate in three," said Mr. "X." "Of course I have interpreted the rules correctly, exclaimed the now irate champion: and I will lay you a wager of dinner for the members of the club that you fail to mate in three moves." "Done!" cried Mr. "X." By this time nearly ever member in the clubwas watching the game with interest. Now, who won this wager? It will be shown in the solution April 11."

11/4/1937-https://www.newspapers.com/clip/25408721/chess-by-herman-steiner/

"SOLUTION TO PROBLEM 760 by N. Nelson: "April Fool Joke."

White: K. on K1 R. on Q7, and KR1: Kt. on KB7 and KB8: B, on QB5: P. on K7, KKt5, and KKt2, Black: K. on KKt2: R. on KKt1: Kt. on K1: B. on KKt8: P. on KR4. (Wh. 9: BL. 5.)

Many members of the club were very fine players and felt their champion would win. Curiously, most of them were pulling for mr. "X," as the champion was somewhat of a braggard and if he won they felt they wouls be hearing about it for a long time. They were, therfore, keenly alert when Mr. "X" started to proceed the game. "My first move is pawn takes en passant," said the smiling Mr. "x." "Of course, I anticipated that move," replied the champion, "and I shall meet it with king takes knight." Oh well then I shall make for my second move, castle: taking the bishop," continued Mr. "X." "This move is according to your definition of castling, perfectly legitimate, as the king moves first, and the bishop being on the knight squar, certainly is subject to capture." "Well," replied the champion, "I must say your interpretation is far fetched, but I will grant you even this point as I fail to see how you mate on the next move: you evidently overlook the fact that when you promote the pawn the king will be able to capture it. Of course, I am forced to interpose my knight and it is pinned, but the king will still be able to take care of that promoted pawn. " Well," smiled Mr. "X," "I shall, however, mate you by pawn to king eight, discovering check, as I shall claim a black knight for the promoted pawn, which, according to your interpretation of pawn promotion, is perfectly legitimate. You stated I might choose any piece on the board and, of course, as the black knight is the only piece that will mate, I naturally selected it."
Exit champion.

We are publishing the best solution sent in my Ladderite L. A. Post, incidentally only two others solved this April Fool Problem.

Problem 760 to complete the tale that Mr. Nelson started to what I believe to be the logical solution according to the rules given by the local champion.
1. White: Pawn takes pawn "en passant" check.
The local champion then captured the white knight reposing on his "bishop two."
1. Black: king takes knight.
"Now," continued Mr. "X" "I understand to quote you, the king moves firstl in castling."
"That is correct," agreed the champion.
Thereupon Mr. "X" executed the move in the prescribed manner by first moving his king to his king knight square and removing the champion's bishop and then setting his rook down on his king bishop square calling check.
The champion was nonplussed, for in stating the rules for "castling" he had failed to forsee a circumstance of this kind. He was forced to admit that, according to his own statement, such a move was possible But seeing in spite of this that it was still impossible to checkmate on the next move, he conceded the point and interposed his knight.
2. Black: Knight to king bishop three.
"Did you not say," resumed Mr. "X," "that in 'pawn promotion' you could reclaim to any piece on the board?"
"That is correct," conceded the champion, "but since you insist on taking me literally I might add that there is no "queen' on the board you may claim in one."
"In that case," stated Mr. "X," "I will be equally generous and present you with a 'knight.'"Whereupon Mr. "X" removed the pawn at king seven and placed a black 'knight' at king eight discovring checkmate to the champion's "king."
"Such a thing is impossbile !" cried the outraged champion.
"Not at all," replied Mr. "X," "for according to your statement that "upon reaching the eight rank a pawn be converted to any piece on the board and assumes its function at once.'"
To this the other members agreed. So the champion held a dinner in honor of Mr. "X," the most apt pupil he had ever taught.

Resepctfully yours,

L.A. Post
Seaman, First Class, U.S. Navy,
U.S..S Texas, San Pedro, Cal."
Henrik Juel: Some help is needed here, James
At least for me (2020-10-01)
A.Buchanan: Hi Henrik I am guessing it’s a cheatyface Valladao:
1. gxh6ep+ Kxf7 2. 0-0+ Sf6 3. f8=sS#
No proof for the ep, castling with capture and promotion to black officer (2020-10-02)
James Malcom: Bingo Andrew! (2020-10-02)
Henrik Juel: Even though I ought to stand by my fellow danish author:
This is a most crude 'joke' problem, especially the 'castling' with capture (2020-10-02)
A.Buchanan: It's kind of a running gag: three silly jokettes which do combine relatively harmoniously (2020-10-02)
A.Buchanan: 1. ... Kf6 allows a short mate, robbing White of the Valladao. 4nNbn/3RP1kN/8/6Pp/8/8/8/4K1bR is the best I can find, fixing the problem, and with less material (2020-10-02)
A.Buchanan: I was hoping that someone would spot that I have shifted a unit to h7 - i.e. the e.p. is even more Foolish :-) I claim it "improves" the problem because currently the e.p. *might* be legal :-) If this is too crude for some, then 4nNr1/3RP1k1/6N1/4P1Pp/8/8/8/4K1bR works. Note you need sTg8 to prevent 2. Sh8#, but wSg6 is blocking g-file, so wBg2 is still free to find other duties on e5. (2020-10-03)
James Malcom: Excellent improvements, Andrew! (2020-10-06)
A.Buchanan: Thanks James: do you think the one with Sh7 is excessively silly? (2020-10-06)
James Malcom: Yes, 'd say a bit too silly. (2020-10-16)
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Keywords: Joke, Valladao Task, Joke promotion (s), En passant as key, Castling, Checking key, under-promotion (s)
Genre: 3#
FEN: 4nNr1/3RPNk1/8/2B3Pp/8/8/6P1/4K1bR
Reprints: Los Angeles Times , p. 13, 11/4/1937
Input: James Malcom, 2020-10-01
Last update: Alfred Pfeiffer, 2020-10-16 more...
70 - P1380563
Kurt Keller
1649 Augsburger Allgemeine 02/10/2020
P1380563
(10+4) C+
#5
1. d6! droht 2. Dc6#
1. ... a2 2. Db7 droht 3. Db3#
2. ... a1=S 3. Db1 droht 4. Dxa1 La3 5. Dd1#
3. ... Lb2 4. Dxb2 droht 5. Da2#
4. ... Sc2 5. Db3#
play all play one stop play next play all
Aufgabe Nr. 1649 (Fünfzüger
Keller): 1.d6! (droht 2.Dc6#)
1.-,a2 2.Db7 (droht 3.Db3#)
2.-,a1S 3.Db1 (droht 4.Dxa1,La3 5.Dd1#)
3.-,Lb2, 4.Dxb2 (droht 5.Da2#)
4.-,Sc2 5.Db3#.
Harmloser Löwenkäfig!

(Heinz Däubler (Amberg, Germany): Schach, in: Augsburger Allgemeine, 2020-10-17)
Comments:
  • Author – Kurt Keller (Ulm, Germany)
  • Yet Another Chess Problem Database (520193)

Mirko Degenkolbe: Wenn man auf den Käfig verzichtet (der Schlüssel spielt sich ja quasi "von selbst"), kann man den Inhalt auf das Miniaturformat herunterbrechen:
Kc4, Bb6
Ka4, Lc1, Ba3, Ba5, Bc7.
#5
In diesem weißen Minimal gibt es jetzt eine zusätzliche Verführung und ein zusätzliches Matt im Lösungsspiel.
Außerdem ist der Mattdual aus der Originalversion nicht mehr vorhanden. (2020-10-03)
Kurt Keller: Ein interessantes Problem ohne den Käfig zum Vergleich! Das Minimal enthält nicht mehr "Verführungen" als das Käfigproblem. Die einzige "Verführung" des Minimals scheitert an 6! Verteidigungszügen. Das zusätzliche Matt ist nur vierzügig. Das Ende der vollzügigen Lösung beider Probleme ist gleich. Sieht man von der Teilparade jeweils ab, gibt es keinen Mattdual. (2020-10-04)
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comment
Keywords: Skittles, Skittles setup (lion cage), Line opening, Promotion, under-promotion, Sacrifice of black pieces, Active sacrifice
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 8/8/8/p2PPP2/k1KPQP2/p2PPP2/8/2b5
Input: Kurt Keller, 2020-10-03
Last update: Kurt Keller, 2020-10-17 more...
71 - P1380661
Viktor Ya. Yuziuk
125 Schach , p. 51, 09/2020
P1380661
(5+1) C+
h#5
1. Kg2 h5 2. Kf3 h6 3. Ke4 h7 4. Kd5 h8=D 5. Kc6 Dh1#
play all play one stop play next play all
Diese Aufgabe nahm am "SCHACH Corona Kompositionsturnier 2020" teil und wurde mit der Veröffentlichung geehrt.
Thema: Kein Stein darf ein besetztes Nachbarfeld haben. Ausnahmen: Mattzug, Schlagfälle, in Nebenvarianten (z. B. bei Studien)
Quasi eine Sonderform von Antiköko.
Henrik Juel: C+ Popeye 4.61 (also) (2020-10-05)
comment
Keywords: Ideal mate, Miniature, Rex solus (s), Promotion
Genre: h#
FEN: 3K4/B4N2/8/8/P6P/8/8/7k
Input: Gunter Jordan, 2020-10-05
Last update: Gunter Jordan, 2020-10-05 more...
72 - P1380746
C. P. Carpenter
The Pittsburgh Gazette 25/12/1910
P1380746
(3+4)
White to play and win
1. g8=D! Gewinn!-See the attached story.
play all play one stop play next play all
Reprint: 1911: https://www.newspapers.com/clip/25254295/the-royal-game-of-chess/ "Christmas Problems"

1910: http://www.chessarch.com/excavations/item.php?=a=1&source=Pittsburgh_Gazette_Times&date=1910.12.25

"The First Christmas Problem"

By C.P. Carpenter

The majority of chess players, familiar as they are with that form of chess joke called "Christmas Problems," may not know until they have read the following beautiful legend just how and when the custom originated nor, for that matter, may they be certain of it then, so cursed is this romantic age with belief.
In the Palace of the World, under the pagan line for December 25, was held the great feast of Brumalia. Upon an occasion of this festival, in the reign of the great King Eshamat, that monarch, his guests and vezers were assembled in the readiness for the festival and whilling away the interval at chess when a regged fakir approached the palace gates and craved admission from Elkanoj Bey, the sentry. That official surveyed him grimly.
"Have you got a card?" he asked with elaborate politness.
"I am a poor man, your excellency," replied the fak. "and the only card I ever had was the two-spot out of my pinochle deck,, but I am fearfully keen for my lunch and no harm, but only good. shall come to you see if you allow me to enter. I swear it as Allah sees it."
"Better beat it while Allah still see you." replied the sentry wearily. "He won't be able to see you if you stick around here long."
"I have traveled far, Effendi," replied the fakir, "and am weary. If the king phrase. I may be able to show him a wonderful play at chess. If he cannot solve it perhaps he may reward his slave with a seat at the banquet."
"In that case." said the sentry,"enter, and be your own usher. If you can get away with it, peace o you: and if noy peace to you."
Now the king fancied himself as a solver. and the fakir was well recieved when he had made known his mission.
"Know. Oh. King," said the fakir. as he set up the pieces, "that this position occured in a game between the great King Mahmud and my friend. Ali Bi, who had the white pieces, and it ran into this puzzling position with white to play, andd though it appears impossbile, netherless my friend Ali Bi did may and win this with one move. Now if his gracious majesty csn tell me how. I forfeit my lucnh: if not, I kick in at the festal board. Is it a bet?"
"You are somewhat shy on collateral,"" replied the kin: "netherless we will at least call it a bargain."

BLACK
(diagram)
WHITE

White to play and win

Long time did King Eshamat pore over the position without avail, while his company shifted about uneasily and the head cook cursed softly, but fluently in his mother tongue. Finally the king arose with a grunt of disgust.
"I pass," he said. 'What's the answer?"
'It was not in the bargain, your majesty," replied the fakir, "thay I should tell. only that your majesty should fail to find."
"Netherless?" said the king, "since we cannot solve, the problem it is our privlege to look in the appendix for answer. Selim, bring an ax."
"Pardon your majesty," cried the faki. "I will explain the mystery."
"I should be charmed," said the king drily. "What was the movr?"
"My friend Ali BI," replied the fakir, "pushed the pawm."
"But what did he call for?"
"He called for a drink but it didn't come," said the fakir, with a smile which didn't fit his face. "I hope it doesn't happen again."
"Quick fool." cried the kinh. "What piece did you call fo>"
"A queen, your majesty"
"But that woulld give stalemate."
"Even so, your majesty, "but it is also won. My frien, Ali Bi, is a weaker player and King Mahmad graciously offered odds of a draw."
King Eshamat sank into a chair and gezed at the faker. He shook himself, unable to rouse. He shook himslef again, but failed to fill. The fakir moistened his lips and glanced at the feast.
'You bargain, your majesty," he suggested timidly.
"True." said he king. "Salim, find this fakir a place at the feast."
"Very good, yout majesty," said the servant, "but the places are full. Where would it please your majesty I should put him/"
'Ah," said the king grimly, "just crack his skull and put him with the rest of the nuts."
James Malcom: In my view, since this has a story about a majesty, and give the board state, that 1. g8=K! would be a far better solution as I thought before I stumbled upon the source today. Sygyzy declares this a draw, even if -bPh2. =Q/R is stale, and =B/S+ is too weak and Black can fortress. =P does nothing of course, so king promotion is just right here it was for Goldilocks. (2020-10-17)
A.Buchanan: Thanks for typing this in, James, although I don’t really understand the joke. And if 1. g8=K how does Wh dislodge bK from g6/h6? (2020-10-18)
Henrik Juel: The joke seems to be that Black has agreed to accept stalemate as a win for White
If we disregard this, I agree that White cannot win with an extra king; it is easy to dislodge black king from g6/h6, but later White cannot dislodge him from g8/h8 (2020-10-18)
A.Buchanan: If the convention is dynasty, then promotion to a king turns both wKs into erlkings until one is captured. I think these can mate bK, no? (2020-10-19)
comment
Keywords: Joke, Kindergarten Problem, Miniature, Promotion in the key (K), Joke promotion
Genre: Studies
FEN: 8/6Pp/7k/7p/7P/8/7p/7K
Reprints: Hartford Courant , p. 15, 6/2/1911
Input: James Malcom, 2020-10-07
Last update: James Malcom, 2020-10-17 more...
73 - P1380852
James Malcom
Andrew Buchanan

MatPlus.net Forum 12/10/2020
nach Josef Cumpe
P1380852
(1+7)
Last two moves?
(-:
See P1234039 and P1375777
The joke here is that pawns may promote to enemy officers (but not to pawns or kings)
Henrik Juel: R: 1... 0-0-0+ 2.a7-a8=sT! (2020-10-12)
A.Buchanan: Maybe this is a moderate joke where we allow promotion to Bl officers, while son-of-P1375777 can be the extreme joke where promotion to any Bl unit is allowed (i.e. pawn & king too), including in the history of the game. What would Josef Cumpe think? :-) He and I are both dressed as clerics in out chesscomposers' blogspot pics: http://chesscomposers.blogspot.com/2012/08/august-16th.html. Perhaps he was a real one though? (2020-10-13)
comment
Keywords: Last Moves?, Joke promotion (t), Rex solus, Type C, Castling in the retro play, Joke, Promotion in the retro play (t)
Genre: Retro
FEN: 2kr2K1/1p1p1npr/8/8/8/8/8/8
Input: A.Buchanan, 2020-10-12
Last update: Alfred Pfeiffer, 2020-10-14 more...
74 - P1380882
James Malcom
Andrew Buchanan

PDB Website 14/10/2020
nach Josef Cumpe
P1380882
(2+7)
Last two moves?
(-:
See P1234039, P1375777 and P1380852.
The joke here is that pawns may promote to *any* unit (friend or enemy; officer, king or pawns).
Henrik Juel: R: 1... 0-0-0+ 2.a7-a8=sT
not 2.e7-e8=sK, because then sTa8 would have moved, and castling not allowed (2020-10-14)
A.Buchanan: Exactly, Henrik. Also: sB on 7th rank could retract to 8th rank, so we need sT instead (2020-10-14)
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Keywords: Last Moves? (2), Type C, Castling in the retro play, Non-standard material (tt), Joke, Joke promotion (t), Promotion in the retro play (t)
Genre: Retro
FEN: 2kr3K/1r1r1qrR/7p/8/8/8/8/8
Input: A.Buchanan, 2020-10-14
Last update: Alfred Pfeiffer, 2020-10-14 more...
75 - P1380896
Andrew Buchanan
MatPlus.net Forum 12/10/2020
P1380896
(13+13) C+
PG in 6.5
(-:
1. b4 g5 2. b5 g4 3. b6 g3 4. bxa7 gxh2 5. axb8=sS! hxg1=wT! 6. Txh7 Txh7 7. Th1
play all play one stop play next play all
The joke here is that pawns may promote to foreign units.
Henrik Juel: The testers probably do not work here, but this seems unique
1.b4 g5 .. 4.bxa7 gxh2 5.axb8=sS hxg1=wT 6.Txh7 Txh7 7.Th1 (2020-10-14)
A.Buchanan: According to Joost De Heer, WinChloe has a category “promotions adverses”, and under this, the problem is C+. Looking now for a full Homebase without utilising promotion to enemy pawn, which makes it too easy (2020-10-15)
comment
Keywords: Unique Proof Game, Joke, Joke promotion (sT), Homebase (w)
Genre: Retro
Computer test: C+ WinChloe
FEN: rnbqkbn1/1ppppp1r/8/8/8/8/P1PPPPP1/RNBQKB1R
Input: A.Buchanan, 2020-10-14
Last update: A.Buchanan, 2020-10-15 more...
76 - P1380941
Doug Brown
Chess Life and Review 8/1976
P1380941
(6+1)
#2
1. Tc7! Ke7 2. d8=sS#!
play all play one stop play next play all
Here's an illegitimate 2-mover for all you illegitimate problem lovers. Submitted by Doug Brown, Moorestown, NJ. Solution below.

(diagram)


(Incidentally, Doug, your mate position on 3 ranks does not need the King. Try again.)
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Keywords: Joke, Joke promotion, Miniature, Rex solus (s)
Genre: 2#
FEN: 3k4/3P3N/N7/4K3/B7/8/8/2R5
Input: James Malcom, 2020-10-15
Last update: Alfred Pfeiffer, 2020-10-15 more...
77 - P1380947
anonym
Pittsburgh Gazette Times 19/3/1911
P1380947
(4+5)
White to play and what?
1. g8=sS##?!
play all play one stop play next play all
http://www.chessarch.com/excavations/item.php?a=1&source=Pittsburgh_Gazette_Times&date=1911.03.19

"OFFICER HE IS IN AGAIN"

A few weeks ago we publishd a problem by the late Russian master, Tchigorin, in which, owing to the wording of the rule at the time covering promotion, white played 1-P-Kt8 (black knight) and mate. Now one of the leading composers of this country (his name is withheld for his own good) sends us the following position. Try the same key move on this and note carefully the result. The effect cannot but bring a smile. Who was mated first?
Henrik Juel: 1.g8=sS is an illegal self-check (2020-10-15)
A.Buchanan: There’s a implicit notion of atomicity - a move somehow is indivisible. Otherwise one might argue that Bl is checked before the promotion part of the move etc. It’s interesting to peer over the edge once and see the impact of evaluating the game state before the move is finished. This is different from looking at a diagram and seeing that it’s illegal, and realising that a resolution is to think that one is mid-move (2020-10-16)
Mario Richter: Inspired by a discussion at chessgames.com (www.chessgames.com/player/sam_loyd.html?kpage=16) one could create a twin by adding a white rook on (e.g.) g1 ... (2020-10-16)
James Malcom: Thank you Mario for posting that Link! I was going to link it eventually, as that's where I found this wonderful twist on the, by then, already ancient and classic mate in one. (2020-10-16)
comment
Keywords: Joke, Joke promotion
FEN: 2q4r/2p1KRPk/7p/7P/8/8/8/8
Input: James Malcom, 2020-10-15
Last update: James Malcom, 2020-10-15 more...
78 - P1380992
Otto Gross
1 Aufbau (New York) 30/04/1943
P1380992
(13+5) C+
#2
1. gxf6ep! droht 2. Dg5#
1. ... gxh6 2. Sxh6#
1. ... Sf3+ 2. exf3#
1. ... Sxg2 2. e7#
1. ... Sxg6+ 2. Dxg6#
1. ... gxf6+ 2. Sxf6#
play all play one stop play next play all
'Aufbau': Das Problem des en-passant-Schlagens ist in unserer Aufgabe nicht die Schwierigkeit, der wir besonderen Wert beimessen, sondern es handelt sich lediglich darum, die Korrektheit der Stellung nachzuweisen, nämlich warum zuletzt nur f7-f5 von Schwarz geschehen sein kann.
f6-f5 oder Sh4-f3 kann nicht geschehen sein, sonst hätte der weisse König im Schach gestanden; die Möglichkeit, dass evtl. ein dritter Springer, in welchen der fehlende weisse Bauer umgewandelt wurde, bei der Placierung des schwarzen Königs auf g3 durch ein Abzugsschach (Sf2-g4 Kg3xg4) ermöglicht haben könnte, fällt fort, da der fehlende Bauer nur ein weisser Läufer geworden sein kann, der jetzt auf c8 steht. Der bei Beginn des Spiels vorhanden gewesene weisse Läufer muss auf seinem Platz geschlagen worden sein, da Be2 und g2 seine Entwicklung verhinderten.
SCHRECKE: Umwandlungsläufer wLc8! (2020-10-16)
Henrik Juel: C+ Popeye 4.61, after analysis proving that last move was f7-f5 (2020-10-16)
comment
Keywords: En passant as key, Obtrusive material
Genre: 2#, Retro
Computer test: Popeye 4.61
FEN: 2B3N1/2P3p1/4P1PQ/4KpPp/5Pkn/8/3NP1P1/4B3
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...
79 - P1381088
Valery Liskovets
18145 Die Schwalbe 302 04/2020
P1381088
(4+13) C+
h#6
0.1.1...
1. ... a4 2. Lb8 a5 3. Lf4 a6 4. Lxg5 axb7 5. Lh6 b8=D 6. g5 Dxb6#
play all play one stop play next play all
Hierzu gibt es eine Version vom gleichen Autor, siehe P1381089.
VL: A long hideaway maneuver. (2020-10-21)
comment
Keywords: blocking of a piece (Selbst-), Excelsior, white, Model mate, Promotion
Genre: h#
FEN: 2K5/bp4p1/1p4p1/1B4P1/6pp/6pr/P5pn/6kb
Input: Gunter Jordan, 2020-10-18
Last update: Gunter Jordan, 2020-10-18 more...
80 - P1381107
Elmar Abdullayev
Aleksandr Melnichuk


4. ehrende Erwähnung
Stanislaw-Kirilitschenko-Memorial
P1381107
(4+3) C+
#6
b) wSf5->b1
a) 1. Sd4! Kh1 2. Kf2 Ld5 3. Se2 g1=D+ 4. Sxg1 Lxa8 5. Se2 Lb7 6. Sg3#

b) 1. Sd2! Kh1 2. Lf3! Kg1 3. Le4! Kh1 4. Kf2 Ld5 5. Sf1 Lxe4 6. Sg3#

2. Le4? Lg6
play all play one stop play next play all
more ...
comment
Keywords: Promotion (d)
Genre: n#
Computer test: Henrik Juel: C+ Popeye 4.61 (2020-10-18)
FEN: B7/5b2/8/5N2/6N1/8/6p1/4K1k1
Input: Rainer Staudte, 2020-10-18
Last update: Alfred Pfeiffer, 2020-10-21 more...
81 - P1381108
Salman Javadzade
Vidadi Zamanov
Viktor Volchek

Problemist of Ukraine 2020
5. ehrende Erwähnung
Stanislaw-Kirilitschenko-Memorial
P1381108
(4+2) C+
#6
1. d4 g5 2. d5 Kg6 3. d6 Kf6 4. d7 Ke6 5. d8=T! Kf6 6. Td6#

5. d8=D? patt
4. ... Kg6 5. d8=D! Kh7 6. Dd3# 5. d8=T?
3. ... Kh7 4. d7! Kg6 5. d8=D! Kh7 6. Dd3#
play all play one stop play next play all
more ...
comment
Keywords: Excelsior, under-promotion (T), Promotion (D)
Genre: n#
Computer test: Henrik Juel: C+ Popeye 4.61 (2020-10-18)
FEN: 5K2/5N1k/6p1/8/6P1/8/3P4/8
Input: Rainer Staudte, 2020-10-18
Last update: Alfred Pfeiffer, 2020-10-21 more...
82 - P1381221
G. Appelt
200 Märkische Volksstimme 07/12/1926
P1381221
(9+10) C+
#2
1. Sg6! droht 2. Se7#
1. ... Dxg6 2. Dc2#
1. ... Sxg6 2. Dxg2#
1. ... fxg6 2. Dxe6#
1. ... Txg6 2. d8=S#
1. ... Te8 2. dxe8=D#,dxe8=L#
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'ASD': "Diese Aufgabe war eine der ersten, die der jugendliche Komponist veröffentlichte. Wenn sie auch noch nicht ganz so ausgefeilt ist, wie man es heute bei modernen Zweizügern findet, so ist das Stück doch immerhin für den Anfang als sehr gut zu bezeichnen."
Henrik Juel: C+ Popeye 4.61 (except for the promotion mate dual) (2020-10-22)
comment
Keywords: under-promotion in mating move (S,L), Promotion in the mating move (D)
Genre: 2#
Computer test: Popeye 4.61
FEN: 6r1/3P1p2/PNk1pP2/Kp2Bp2/pP3N1n/8/Q5q1/7r
Reprints: 27 Arbeiterstimme Dresden 03/12/1927
Input: Mario Richter, 2020-10-22
Last update: Alfred Pfeiffer, 2020-10-22 more...
83 - P1381237
K. Bürger
129 Volksfreund Recklinghausen 21/07/1926
P1381237
(6+5)
#3
1. Dc7! droht 2. Lxb3+ Kxb1 3. Dc2#,Lc2#,Sxd2#
2. ... Kxb3,Kd3 3. Dc4#
sowie 2. Le2+ Kxb1 3. Sxd2#
1. ... Sd3 2. Lxb3+ Kxb1 3. Dc2#,Sxd2#
2. ... Kxb3 3. Dc4#
Co-Dual 2. Lxd3+ Kxd3 3. Dc4#
1. ... Sa2 2. Ld3+ Kxd3 3. Dc4#
1. ... Kxb1 2. Ld3+ Sxd3 3. Sxd2#
1. ... Kd1 2. Se3+ Ke1 3. Dg3#
1. ... d1=D+,d1=T+ 2. Ld3+ Kxd3 3. Dc4#
1. ... d1=S 2. Lxb3+ Kxb1 3. Dc2#,Lc2#,Sd2#
2. ... Kxb3,Kd3 3. Dc2#,Dc4#
Co-Dual 2. Ld3+ Kxd3 3. Dc4#
play all play one stop play next play all

Duplicate Diagram: P1286414

steingetreu P1286414 (evtl. dort falsch zitiert?!)

zum Autor heißt es in der 'ASD': K. Bürger, Essen
Henrik Juel: Damaged by duals
tiny typo: stipulation should be #3, not #2 (2020-10-22)
comment
Keywords: Promotion (d), under-promotion (t,s)
Genre: 3#
FEN: 8/8/R7/3K4/2B5/1p6/1pkp3Q/1Rn2N2
Reprints: 46 Arbeiterstimme Dresden 16/04/1928
Input: Mario Richter, 2020-10-22
Last update: Alfred Pfeiffer, 2020-10-22 more...
84 - P1381267
James Malcom
(1) Mat Plus 21/10/2020
P1381267
(9+13)
#12
(-:
1. a8=sS! Sb6 2. cxb6 cxb6 3. c7 b5 4. c8=S b4 5. Sd6 exd6 6. e7 d5 7. e8=S d4 8. Sf6 gxf6 9. g7 f5 10. g8=S f4 11. Sh6 Sg5 12. Sg4#
play all play one stop play next play all
more ...
comment
Keywords: Joke, Joke promotion (s), konsekutive Umwandlungen 4 (sSSS), under-promotion in the key (s)
Genre: n#
FEN: 7R/P1p1p1p1/2P1P1P1/2P5/8/1B1P1ppn/4prqk/4Kbnr
Input: James Malcom, 2020-10-24
Last update: Alfred Pfeiffer, 2020-10-24 more...
85 - P1381354
Udo Marks
1741 Rochade Europa 04/1998
Dem Schachklub Gronau/Leine nachträglich
zum 10jährigen Bestehen gewidmet
P1381354
(9+14) C+
#5
Duplex
w) 1. Dd7-f5+! Kf7-g8 2. Df5xc8+ Kg8-h7 3. Dc8-h8+ Kh7-g6 4. Dh8-h5+ Kg6-f6 5. Dh5-f5#

s) 1. ... Td3-d4+! Ke4-f5 2. g7-g6+ Kf5-g5 3. Ld6-f4+ Kg5-h4 4. Tc8-h8+ Tb8xh8 5. Da8xh8#
s) 1. ... Td3-d4+! Ke4-e3 2. Td4-e4+ Ke3-f2 3. Se1-d3+ Kf2-f1 4. Se2-g3+ Kf1-g1,hxg3 5. Te4-e1#
2. ... Ke3xe4 3. Lb5-d3+ Ke4-d5 4. Se2-f4+ Kd5-c6 5. Ld3-b5#
4. ... Kd5-d4 5. Se1-c2#
3. ... Ke4-e3 4. Ld6-c5+ Dd7-d4 5. Lc5xd4#
play all play one stop play next play all
Stefan Felber: Umwandlungsläufer d6! (2020-10-28)
comment
Keywords: Checking key, Obtrusive material
Genre: n#
Computer test: Popeye 4.83
FEN: qRr5/1RpQpkp1/pN1b4/1b6/1p2K1P1/2pr1B2/4n1PP/4n3
Input: Marcin Banaszek, 2020-10-28
Last update: Alfred Pfeiffer, 2020-10-30 more...
86 - P1381378
Anton Baumann
19249 Schach , p. 80, 07/2020
P1381378
(7+8) C+
s#8
Zeroposition
a) wBd3->e4
b) wLd1->h5
a) 1. Lb3+! Kf8 2. Df6+ Ke8 3. c8=T+ Kd7 4. Td8+ Kc7 5. Dd6+ Kb7 6. Ld5+ Ka7 7. Txh8 Se8 8. Txe8
7. ... Se6 8. Dxe6
7. ... Sf5 8. exf5
7. ... Sh5 8. Txh5

b) 1. g4! Kf8 2. Df6+ Kg8 3. c8=D+ Kh7 4. Lg6+ Kh6 5. Lf7+ Kh7 6. Dxh8+ Kxh8 7. Dg6 Se8 8. Lxe8
7. ... Se6 8. Lxe6
7. ... Sf5 8. gxf5
7. ... Sh5 8. gxh5
3. ... Se8 4. Dxe8+ Kh7 5. De4+ Kg8 6. Dxh8+ Kxh8 7. Dg6
play all play one stop play next play all
19.249 (Baumann) a) 1.Lb3+! Kf8 2.Df6+ Ke8 3.c8T+ Kd7 4.Td8+ Kc7 5.Dd6+ Kb7 6.Ld5+ Ka7 7.T:h8 Se8/Se6/Sd5/Sh5 8.T:e8/D:e6/e:f5/T:h5 S matt; b) 1.g4! Kf8 2.Df6+ Kg8 3.c8D+ Kh7 4.Lg6+ Kh6 5.Lf7+ Kh7 6.D:h8+ K:h8 7.Dg6 Se8/Se6/Sf5/Sh5 8.L:e8/L:e6/g:f5/g:h5 S matt, 3… Se8 4.D:e8+ Kh7 5.De4+ Kg8 6.D:h8+ K:h8 7.Dg6 S matt (4 P.). „Die schwarze Springer-Turm-Batterie muss Matt setzen. Der bewegliche sSg7 wird von Weiß geschlagen, so dass wegen Zugzwang der sSg1 Matt setzen muss. Prima“ (KHS).
more ...
comment
Keywords: Checking key, under-promotion (T), Promotion (D)
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 6kb/2P3n1/6Q1/8/8/p2P2P1/P5pp/K2B2nr
Input: Felber, Volker, 2020-10-29
Last update: Alfred Pfeiffer, 2020-10-30 more...
87 - P1381397
Ferdinand Möller
Daheim 05/08/1916
P1381397
(9+9) C+
#3
1. Se5! droht 2. Dc3+ Kxc3 3. Sd5#
2. S3g4+ Kd5,e3 3. Dd7#,Dc4#
2. S5g4,Sf7,Sd7 ... 3. Dc4#
1. ... Kxe5 2. Sc4+ Kf4 3. Le3#
2. ... Kf6 3. Lh4#
2. ... Kd5 3. Dg8#
1. ... La3 2. Dc3+ Kxc3 3. Sd5#
1. ... Lb2 2. S3g4+ Kd5 3. Dd7#
2. ... e3 3. Dc4#
1. ... d1=D 2. S3g4+ Le3,e3 3. Dc4#
2. ... Kd5 3. Dd7#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (the threat duals never materialize) (2020-10-31)
comment
Keywords: Promotion (d)
Genre: 3#
Computer test: Popeye 4.61
FEN: 2Q5/1p4p1/1p4P1/1P5P/2Nkp3/4Np2/K1pp1B1P/2b5
Input: Mario Richter, 2020-10-31
Last update: Alfred Pfeiffer, 2020-10-31 more...
88 - P1381532
Mirko Degenkolbe
1660 Springaren 151, p. 143, 09/2019
P1381532
(3+3) C+
#2
1. d8=D! Zugzwang
1. ... b6 2. Dd5#
1. ... La7 2. Sc7#
1. ... Lc7 2. Kxc7#
1. ... Ld6,..,Lh2 2. Da5#
play all play one stop play next play all
[MD 1443]
Definition:
Jeder der sich auf dem Brett befindlichen weißen Steine setzt mindestens einmal Matt.

SMASAKER OCH HUGSKOTT
SCHRECKE: vergleiche: P1319028 (2020-11-04)
comment
Keywords: Promotion in the key (D), anticipated (P1319028)
Genre: 2#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: kbK5/1p1P4/8/1N6/8/8/8/8
Input: Felber, Volker, 2020-11-04
Last update: Felber, Volker, 2020-11-17 more...
89 - P1381543
Ivan Soroka
7651 Phénix 268 12/2016
P1381543
(5+2) C+
s#11
1. g7-g8=D+! Kf7-f6 2. Dg8-g4 Kf6-f7 3. Kh7-h8 Kf7-f6 4. Df4-g5+ Kf6-f7 5. Dg5-h5+ Kf7-f6 6. d7-d8=S Sf5-e3,S~ 7. Dg4-f4+ Se3-f5 8. Df4-d6+ Sf5xd6 9. Dh5-e5+ Kf6-g6 10. Te8-g8+ Kg6-h6 11. Sd8-f7+ Sd6xf7#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-11-11)
comment
Keywords: Promotion in the key, Checking key, under-promotion (S), konsekutive Umwandlungen 2 (DS)
Genre: s#
FEN: 4R3/3P1kPK/8/5n2/5Q2/8/8/8
Input: Marcin Banaszek, 2020-11-04
Last update: Marcin Banaszek, 2020-11-12 more...
90 - P1381558
Milomir Babic
8091 Phénix 279-280 11-12/2017
P1381558
(11+7)
s#11
1. Tb1+! Sxb1 2. Da3+ Sxa3 3. 0-0+ Sb1 4. a8=T+ La7 5. d5+ e5 6. dxe6ep+ Tg7+ 7. Kh1 e2 8. Te1 h5 9. b8=D h4 10. Db7 h3 11. Dg2 hxg2#
play all play one stop play next play all
Henrik Juel: Damaged by the dual 7... h5 8.b8=D,Te1 (2020-11-05)
comment
Keywords: Checking key, Castling, under-promotion (T), Promotion (D), En passant, Pawn mate, Corner mate, Pinning, pin-mate
Genre: s#
FEN: 7B/PPr1p3/7p/2b5/1NNP4/n2Qp3/1R5P/k3K2R
Input: Marcin Banaszek, 2020-11-05
Last update: Gunter Jordan, 2020-11-05 more...
91 - P1381565
Mirko Degenkolbe
C252 SuperProblem (Website) 15/05/2020
P1381565
(6+1) C+
#7
1. a5? Kg8!
1. f7? Kg7!
1. g7+? Kg8 2. Kg4!
1. ... Kh7!

1. Kg4! Zugzwang
1. ... Kg8 2. g7 Kf7 3. Kf5 Ke8 4. g8=D Kd7 5. Db8 Kc6 6. Ke6 Kc5 7. Dd6#
3. ... Kg8 4. Ke6 Kh7 5. Kf7 Kh6 6. g8=D Kh5 7. Dg5#
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[MD 1468]
Definition:
Three trys by different white pions fail on three different escapes of the black king from the corner.
In the solution, two completely different matt images: one on the edge, which ends with pattern matt, and one surprisingly in the middle of the board.
Kindergarten problem.
Rex-solus.
Miniature.
A.Buchanan: Two of the tries are bogus in that the sK move is forced. It’s like counting a random queen check as a try if Black’s only legal reply is to capture the queen (2020-11-06)
more ...
comment
Keywords: Rex solus (s), Kindergarten Problem, Miniature, Promotion (D)
Genre: n#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 7k/8/5PP1/8/P6P/3P3K/8/8
Input: Felber, Volker, 2020-11-05
Last update: Felber, Volker, 2020-11-11 more...
92 - P1381568
Udo Degener
Mirko Degenkolbe

2355 The Macedonian Problemist 62, p. 20, 05-08/2020
P1381568
(2+12) C+
h#3
0.2.1...
1) 1. ... e7-e8=D 2. Td4 Dg8 3. Le4 Kf7-e8#
2) 1. ... Kf7-e8 2. Ke6 Kd8 3. Kf7 e7-e8=D#
play all play one stop play next play all
Reziprokwechsel-Meeraner, Themafiguren: wB/wD & wK
[MD 1471]
Inhalt:
Meerane-Thema, Fünfte Form (Sauberer Reziprokwechsel-Meeraner): In einem Hilfsmatt mit zwei Lösungen führt Weiß den Schlüssel aus. Der Mattzug von Lösung I. wird zum Schlüsselzug von Lösung II. Der Schlüssel aus Lösung I. wird zum Mattzug in Lösung II.
Themafiguren: weißer König und weißer Bauer.
Hier findet die Thematik auf einem einzigen Themafeld statt (e8).
Zweimal Mustermatt.
Dieses Mal gibt es die Besonderheit, dass Weiß mit einer Bauernumwandlung arbeitet.
SCHRECKE: kein Mustermatt in 2) (2020-11-05)
comment
Keywords: Minimal (B), Meerane-Thema, Promotion (D), Promotion in the key (in a), Promotion in the mating move (in b), Meerane-Thema, Battery creation (in a), Batteriematt diagonal (in a), Königsbatterie (in a), discovered checkmate (in a)
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/r2pPKpb/2pb1p2/2pkp2n/7r/8/8/8
Input: Felber, Volker, 2020-11-05
Last update: Felber, Volker, 2020-11-06 more...
93 - P1381570
Grigory Popov

P1381570
(11+12)
#33
1. a8=D! Da5 2. Dxa5 Txa5 3. b8=D Ta1 4. Da8+ Txa8 5. e8=D Ta1 6. Da8+ Txa8 7. La3 Txa3 8. g8=D Ta1 9. Da8+ Txa8 10. c8=D Ta1 11. Dc6+ e4 12. Da4 Txa4 13. h8=D Tb4 14. Sc3 Tb2 15. d8=D Te2 16. Sxe2 dxe2+ 17. Kxe2 Kg2 18. Da1 Sf4+ 19. Kd2 f1=S+ 20. Kc3 Se2+ 21. Kxc4 Le3 22. f8=D Seg3 23. Dfa3 Sd2+ 24. Kb5 Lf4 25. Dd1 Sdf1 26. Da2,Db2+ Sd2 27. Daxd2,D8xd2+ Lxd2 28. D8xd2,D2xd2+ Kh3 29. Df2 e3 30. Dxe3 f4 31. Df2 Sf1 32. Ddf3+ Sg3 33. D2g2#
play all play one stop play next play all
Reprint: http://superproblem.ru/archive/probl/N/Popov-33-2018.gif
James Malcom: This may very well be impossible to C+ with Gustav, but there is an alternative for manual/partial testing by using chess.com's free analysis. When you enter in the position, it completely agrees with the first full 14 moves. It ponders on 15. between which pawn to queen. If you manually enter 15. d8=Q, then the following engine evaluation generally agrees with the solution, and eventually is will find the mate on some point. (2020-11-06)
A.Buchanan: It’s not a matter of style whether you have space after comma in the solution. It’s incorrect syntax for the editor (2020-11-06)
comment
Keywords: Konsekutive Umwandlungen 9 (DDDDDDDsD), Promotion in the key, under-promotion (s)
Genre: n#
FEN: 5B2/PPPPPPPP/q7/3rppp1/2p4p/3p3n/5p2/3N1Kbk
Input: James Malcom, 2020-11-06
Last update: Alfred Pfeiffer, 2020-11-07 more...
94 - P1381646
Milomir Babic
8358v Phénix 301-302 11-12/2019
1. ehrende Erwähnung
P1381646
(12+7) C+
s#9
1. c7-c8=T+! Kc6-d5 2. f7xe8=L b7-b6 3. h7-h8=D b6xc5 4. Dh8-f6 c5xd4 5. Le8-g6 d4-d3 6. Df6-g5 Kd5xd6 7. e7-e8=S Kd6-d5 8. Se8-f6+ Kd5-d6 9. Te1-e6+ d7xe6#
play all play one stop play next play all
Version zu: P1381602
PR Yves Tallec 04-05/2020
SCHRECKE: Das ist ein s#9!
C+, Gustav 4.1d, Brute Force
Umwandlungsläufer sLe8! (2020-11-09)
comment
Keywords: Checking key, under-promotion in the key, Model mate, Selfblock, Allumwandlung, Pawn mate, Obtrusive material, konsekutive Umwandlungen 4 (TLDS)
Genre: s#
Computer test: Gustav 4.1c
FEN: 4b3/1pPpPP1P/2kP4/1pP2K2/1prP4/1B6/3P4/B3R3
Input: Marcin Banaszek, 2020-11-09
Last update: James Malcom, 2020-11-09 more...
95 - P1381700
A. H. Bobbins
154 American Chess Magazine Vol. 1, p. 443, 12/1897
P1381700
(6+3)
=2 durch Schwarz

Black forces a draw in two moves
1. ... c1=wL!
2. Sb1 axb1=wL! Patt
2. Db1+ axb1=B! Patt
play all play one stop play next play all
James Malcom: I've added in the solution now. (2020-11-11)
comment
Keywords: Joke, Joke promotion, under-promotion in the key, konsekutive Umwandlungen 2 (LL, Lb), Dummy Pawn
Genre: Fairies
FEN: 8/P7/8/5B2/8/K1NQ4/pPp5/k7
Input: James Malcom, 2020-11-10
Last update: Alfred Pfeiffer, 2020-11-12 more...
96 - P1381788
James Malcom
Facebook 7/27/2020
P1381788
(10+6) C+
#2
1. g8=D! droht 2. Df7#
1. ... Tf5 2. Dd8#
1. ... Le8 2. Dxe8#
1. ... Sh8 2. Df8#
play all play one stop play next play all
more ...
comment
Keywords: Promotion in the key (D), Flight taking
Genre: 2#
Computer test: Popeye 4.61
FEN: 1rR5/2P1k1PP/2b1P1nR/3r2P1/2B1N3/3pK3/8/8
Input: James Malcom, 2020-11-12
Last update: James Malcom, 2020-11-13 more...
97 - P1381790
James Malcom
Facebook 24/09/2020
P1381790
(7+5) C+
#3
1. h8=D+! e5 2. dxe6ep+ Kxd3 3. 0-0-0#
2. ... Kxb4 3. Db2#
play all play one stop play next play all
more ...
comment
Keywords: Valladao Task, Promotion in the key (D), En passant, Castling as mating move, Checking key, Flight giving key
Genre: 3#
Computer test: popeye 4.85
FEN: 8/4p2P/3p4/2pP4/1R6/2kBp3/8/R3K1N1
Input: James Malcom, 2020-11-12
Last update: Alfred Pfeiffer, 2020-11-13 more...
98 - P1382048
Ottó Titusz Bláthy
37 Vielzügige Schachaufgaben 1890
Version By Unknown
P1382048
(9+9)
#112
1. Kb4 Ka8 2. Ka3 Kb7 3. Ka2 Ka8 4. Kb1 Kb7 5. Ka1 Ka8 6. Ka2 Kb7 7. Ka3 Ka8 8. Kb4 Kb7 9. Ka5 f6 18. ... f5 27. ... g6 36. ... g5 45. ... h6 54. ... h5 63. ... f4 72. ... f3 81. ... h4 90. ... h3 99. ... b4 100. Kxb4 a3 101. Kxa3 Ka8 102. Ka4 Kb7 103. Ka5 Ka8 104. b4 Kb7 105. b5 cxb5 106. Kb4 Kc6 107. a8=D+ Kd7 108. De4 Kc8 110. c6 Kd8 111. Kxb5 Kc8 112. De8#
play all play one stop play next play all
An elongated version of P1372653 by four moves; the original origins are unknown

Move length record for a kindergarten problem
A.Buchanan: Any kind of assessment of soundness of this one? (2020-11-19)
James Malcom: Andrew, there is no doubt about the soundness. Sure, the ending may have a few duals, but those are generally acceptable in Blathy's correct work. Here is the proof.

All White pawns are immobile. The kingside mustn't move, or else Black breaks through and wins. Nor can a7, b2, or b6 without losing the winning chance.

The Black king is stuck, of course. The Black kindgside pawns are forever held up by White's, and the queenside ones can't move, or else Black would soon be in zugzwang and lose.

Lastly, the White king can't go after the Black pawn to shorten the game, or the Black queenside pawns must be tended to. If the White king reaches either e5 or f4, then Black plays b4!, threatening to queen soon. So the White king must hurry back, Black gets the White queen stuck as well, and it is a draw.

With a restricted White king to the given triangulation corridor, the Black king stuck, all pawns pawns frozen on their journeyes, the soundness is guranteed. (2020-11-19)
James Malcom: Furthermore, on move 99 with Black to move, chess.com analysis agrees with checkmate in move 112, albeit with a few move order corrections that I've just made. So it is still correct, with a Blathy style taste in duals. (2020-11-19)
Anton Baumann: Nach 99. - b4 gemäss Gustav noch 12 Züge; das ist #111.
Korrektur: ... 108.De4 Kc8 109.c6 Kd8 110.Kxb5 111.De8# (2020-11-20)
comment
Keywords: Kindergarten Problem, Move Length Record, Promotion (D), Sea Snake
Genre: n#
FEN: 8/Pk3ppp/1Pp5/KpP5/p1p3p1/2P3P1/1P3P1P/8
Input: James Malcom, 2020-11-18
Last update: Alfred Pfeiffer, 2020-11-26 more...
99 - P1382145

www.dailychess.com 18/06/2020
gewidmet Karl Fabel
P1382145
(13+6)
White to play and NOT mate
1. cxb6ep!
play all play one stop play next play all
Created by a user named SwissGambit

https://www.dailychess.com/forum/posers-and-puzzles/white-to-move-and-not-checkmate.71112
Henrik Juel: 1.cxb5,T~,S~? all mate
1.cxb6ep!
R: 1... b7-b5 2.Ka4-a5 Kb6-c6 is one possibility (2020-11-19)
comment
Keywords: Obtrusive material
Genre: Fairies
FEN: 4Bb2/p1pRRPp1/P1k1P1P1/KpP5/1PP5/8/6N1/7B
Input: James Malcom, 2020-11-19
Last update: Alfred Pfeiffer, 2020-11-30 more...
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