Die Schwalbe

49 problem(s) found in 3827 milliseconds (displaying 49 problem(s)). [COMMENTDATE>=20220810 AND NOT K='Linienkombination' AND K='mit Umwandlungsfigur'] [download as LaTeX]

1 - P0001141
George Hume
Jamaica Gleaner 12/1891
Weihnachtsturnier 1891
1. Preis
P0001141
(9+9)
Auf welche Gedanken kommen Sie bei dieser Stellung?

Der Ld6 ist keine UWF und der sBg7 wurde auf seinem Ausgangsfeld geschlagen. Nach dem Autor muss der letzte Zug also Lf8-d6 gewesen sein, also illegale Stellung.
Datum der Originalpublikation nicht 100% sicher, laut ACM aus der "Jamaica Gleaner Christmas column".

Originalforderung: How has the position been arrived at and who is the winner, and in how many moves?

From the Jamaica Gleaner: "White mates in two moves. The last move made was by Black playing his Bishop and announcing mate. As it can be demonstrated that the Bishop is not a promoted Pawn and that Black's King's Knight's Pawn was captured on its original square by White's Queen's Knight's Pawn the Black Bishop must have been played from Bishop's square (f8) to Q3 (d6). This being an illegal move, White enforces the penalty of compelling Black to retract it and move his King whereupon White plays 1 PXB(Q) ch (1.gxf8=Q+) and mates next move by 2 Q-B4 (Qf4#). The following is a brief but pointed analysis, demonstrating the false move: White's Pawns have made six captures all on black squares. The Q Kt P (Pb2) made five of these and consequently captured the Kt P on the square upon which it now stands (g7). They could not have captured the Q B which is also lost. The White Bishop is the QRP (Pa2) promoted, the original KB having been captured on its own square as the unmoved Pawns show. To allow this promotion Black's QRP (Pa7) made two captures, the QKtP (Pb7) one, and the QBP (Pc7) two. The KRP (Ph7) has also made a capture, which accounts for the seven pieces White has lost. The Black Bishop is not a promoted Pawn, as if the Black KBP (Pf7) had played to the 7 th square (f2) and then captured a White piece on K or Kt square (e1 or g1) the captures by White Pawns cannot be accounted for without including the Black QB or KRP neither of which is available. As it can be demonstrated, then that the Black Bishop is not a promoted one, and that the KKtP was captured by the White Pawn which now stands on that square, in order to reach Q3 the Black Bishop must have an impossible move.

Der Kolumnist des ACM merkt aber zurecht an:
ACM: The above is a very fine piece of analytical work; but there is a slight flaw in connection with the minor condition, 'mate in two'. In a position of this kind we believe only that which can be proved; thus we do not think that White has any right to enact a penalty, as neither the analysis nor the conditions show that the Black Bishop came from Bishop's square on his last move; indeed, that Bishop may have played outside the Pawns on the very first move of the game which, being played, brought about the position.
HBae: White plays 1 PXB(Q) ch (1.gxf8=Q+). Muß der sK nicht auf f5 stehen? (2019-10-22)
Henrik Juel: Last move (supposedly) was Lf8-d6#, which is obviously impossible and hence illegal
The penalty for this is that Black must replace Ld6 on f8 AND instead make an arbitrary move with his king
So the forward play is
0... Kf5,Kf6,Kh6 1.gxf8=D+ Kg5,Ke5 2.Df4# (2019-10-22)
A.Buchanan: One long-standing approach to resolving illegal diagram jokes is to suppose that only the last move was illegal, with all prior play legal. The illegal move is then retracted, and play continues. Of course, the “illegal move” might in principle be from *any* legal position (even the game array!). So for sanity, we say the illegal move is a simple but somehow illegal shift of a single piece.

So here, candidates for the last move include Pe5-a4+, Sf4-e1+, Ke5-g5+ & B?-d6+. For all of these, White has 6 visible pawn captures, all on dark squares, so Black light-squared bishop is excluded. wPa must have promoted to light-squared bishop, so if the three Black pawns on a-file remain, there is only one unaccounted capture. Thus bPh could not promote, and must be bPg6 now. Thus bPg7 was captured at home, and bBf8 was thus locked in.

So Bf8-d6 is certainly a possible illegal move, but so are e.g. Be8-d6 (as the light-squared bishop is otherwise unexplained) and Pe5-a~. This is an example of an "implausible" joke according to Dawson & Hundsdorfer, because there is more than one retraction to the current position, and one just has to arbitrarily pick the one that makes the forward logic work. (2023-04-02)
A.Buchanan: Another issue is that according to the 1883 laws, White cannot force Black to move their king. The 1883 rules stated:
- If a player touches a piece or Pawn of his own he must move it.
- If he touches one of his adversary's he must take can be taken.
- If he touches plurality of pieces or Pawns of the same colour, in either of these instances his adversary may elect which such piece or Pawn he will call upon him to play or to take, as the case may be.
- If the rules governing the moves of pieces do not admit of the adversary exacting penalty as above, the player must move his King, but may not Castle. If the King cannot be moved without exposure to check, no penalty can then be exacted
So according to this, Black must play Bf8xPg7 as the penalty move.
Was there another revision to the rules between 1883 & 1891? (2023-04-02)
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comment
Keywords: Illegal position, Joke, Retract illegal move (stuck at home), Touch Move, Volet Pawn, Obvious promotion (L)
Genre: Retro
FEN: 6B1/4p1P1/p2b2p1/p5kq/p7/4P1K1/2PPP1PP/3n4
Reprints: American Chess Monthly 1, p. 11, 03/1892
Jamaica Gleaner 30/04/1892
17 Europe Echecs 14 10/1959
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-02 more...
2 - P0003720
Yuri Markovic Gordian
4496 Schach , p. 30, 01/1964
P0003720
(7+9) C+
h#2
b) sBh7 nach a7
a) 1. 0-0 Tcg3 2. Sh8 Txg7#
b) 1. 0-0-0 Tgc4 2. Sb8 Txc7#
play all play one stop play next play all
more ...
comment
Keywords: Castling, Cant Castler, Obvious promotion (T), Twin
Genre: h#, Retro
Computer test: HC+ Popeye 4.61
FEN: r3k2r/1pp3pp/2n3n1/8/6R1/2R4P/4P1P1/5B1K
Input: Gerd Wilts, 1995-06-03
Last update: Gunter Jordan, 2022-12-01 more...
3 - P0007036
Noam D. Elkies
3370 U.S. Problem Bulletin 102/103 07-10/1995
Lob
P0007036
(15+13) C+
BP in 17.5
1. a4 b6 2. a5 Lb7 3. a6 Dc8 4. axb7 Sa6 5. b8=L Db7 6. f3 Dc6 7. f4 Dc3 8. dxc3 Kd8 9. Le3 Kc8 10. Lc5 Kb7 11. Lb4 Kc6 12. La5 bxa5 13. e3 Kb6 14. Lb5 Kb7 15. Se2 Kc8 16. Tf1 Kd8 17. Tf3 Ke8 18. Dxd7#
play all play one stop play next play all
D. Meinking: Comm., USPB 1995-1997 (2002-07-06)
Moldenhauer: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min.
Bei 16.5, 17.0 keine Lösung. BP 18.0 64 Lösungen.
C+ Euclide 1.11 in 44 Std. 07 Min. (2023-01-10)
A.Buchanan: This is a cool problem with tempo loss for both players (bK9 & wPf2). Noam likes to end proof games with checkmate, and in this case I guess it serves to eliminate shorter solutions which would otherwise save half a move. Checking 16.5 is sufficient for soundness. Thanks for taking the time to test. (2023-01-11)
A.Buchanan: Bit baffled how there can be 64 solutions in 18.0 moves since White just moved. 18.5 maybe? (2023-01-11)
ras@bsiag.com: Quickly checked because 45h seemed a lot for only 17.5 moves and only a few captures: Stelvio 0.98 is done in 210 seconds. (2023-01-11)
ras@bsiag.com: Well, Stelvio treats shorter solutions of same parity as cooks, so any shorter solution in 16.5, 15.5 etc would have been found by checking for 17.5. But anyhow, quickly checking 16.5 is done in a few seconds, finding no solution (of course). (2023-01-12)
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comment
Keywords: Unique Proof Game, Promenade (K), Tempo Loss (sK9 wBf2), Prenix (L), Obvious promotion (L)
Genre: Retro
Computer test: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min. Bei 16.5, keine Lösung.
FEN: rB2kbnr/p1pQpppp/n7/pB6/5P2/2P1PR2/1PP1N1PP/RN2K3
Input: Gerd Wilts, 1996-08-12
Last update: A.Buchanan, 2023-01-11 more...
4 - P0515534
E. Rosinko
3820 Revista de Sah 01/1978
P0515534
(3+3)
h#2
2.1...
b) sLb5, sLf5
a) 1. Ke6 Kc5 2. Ke5 Te1#
a) 1. Kc6 Ke5 2. Kc5 Tc1#
b) 1. Lbd7 Tb1 2. Kc6 Tb6#
b) 1. Lfd7 Tf1 2. Ke6 Tf6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (also) (2023-02-27)
comment
Keywords: Symmetrical position, Miniature, Obvious promotion
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/3k4/1p1N1p2/3K4/8/8/3R4
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: Rainer Staudte, 2023-02-27 more...
5 - P0550041
Jacobus Theodorus Sanderse
8711 feenschach 03/1968
P0550041
(2+5) C+
h#6
b) -sBe7
c) sKg1 nach f2
a) 1. Dh5 d4 2. g5 d5 3. g4 d6 4. g3 dxe7 5. g2 e8=D 6. Dh2 De1#
b) 1. Kh2 d4 2. Dg1 d5 3. g5 d6 4. g4 d7 5. g3 d8=D 6. g2 Dh4#
c) 1. Kg3 d4 2. Kh4 d5 3. Dg3 d6 4. g5 dxe7 5. Lf8 exf8=D 6. g4 Dh6#
play all play one stop play next play all
more ...
comment
Keywords: Echo-Kombinationen, Excelsior white (auto key), Minimal (B), Obvious promotion (l)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/4p1p1/6qb/8/8/8/K2P4/6k1
Input: Ronald Schäfer, 1997-12-16
Last update: A.Buchanan, 2023-07-25 more...
6 - P0574170
Viktor S. Zheglov
(319) Suomen Tehtäväniekat , p. 107, 05-06/1998
P0574170
(2+3) C+
h#6
0.1...
1. ... Db8+ 2. D8d6 De8 3. Df2 Kb7 4. Ddg3 Kc6 5. Kg2 Kd5 6. Kf3 De4#
play all play one stop play next play all
Materialrekord
Yuri Bilokin: you can see 1.Qf2 Kb7 2.Qd3 Qc2 3.Qg3 Kc6 4.Kg2 Kd5 5.Kf3 Qe4#
1.Qf2 Kb7 2.Qd3 Qc2 3.Kg2 Kc6 4.Qg3 Kd5 5.Kf3 Qe4#
1.Qf2 Kb7 2.Qd3 Qc4 3.Qg3 Kc6 4.Kg2 Kd5 5.Kf3 Qe4#
1.Qf2 Kb7 2.Qd3 Qc4 3.Kg2 Kc6 4.Qg3 Kd5 5.Kf3 Qe4# (2024-02-09)
comment
Keywords: Aristocrat, Obvious promotion
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: K1Qq4/8/1q6/8/8/8/7k/8
Input: hpr, 1999-06-16
Last update: Erich Bartel, 2017-06-24 more...
7 - P1001038
Andrew Buchanan
4v Retros mailing list 21/01/2001
P1001038
(14+1) C+
Last move?
#2
1. 0-0 Kxe2 2. Te1#
R: 1. Ke4-e3
play all play one stop play next play all
Die vorherige Stellung war noch nicht tot, wenn Weiß noch rochieren darf.
AB: First proof of "can castle", without recourse to conventions. (2009-11-22)
A.Buchanan: deadpos doesn't understand about retro logic yet, so does not eliminate R: 1. Ke4xLSBe3? (2022-11-13)
more ...
comment
Keywords: Dead Position, Castling, Rex solus (s), Obvious promotion (L), Last Move?, Type B
Genre: Retro, 2#
Computer test: HC+ Forward Popeye 4.79 DP deadpos
FEN: 8/7Q/8/4BB2/2PP1P2/3NkN2/PP2P1P1/4K2R
Reprints: 13 idee & form 156, p. 5284, 10/2022
Input: Gerd Wilts, 2001-01-25
Last update: A.Buchanan, 2023-12-27 more...
8 - P1011888
Michel Caillaud
Reto Aschwanden

Retros mailing list 31/12/2003
5. Preis
Gianni Donati 50th Jubilee Tourney
P1011888
(15+14) C+
BP in 24,5
1. c4 e5 2. c5 Ld6 3. cxd6 c5 4. Db3 c4 5. Dh3 c3 6. d3 c2 7. Ld2 c1=L 8. b4 Lb2 9. Sa3 Lc3 10. 0-0-0 g5 11. Le1 Ld2+ 12. Kb2 g4 13. Tc1 g3 14. Txc8 gxf2 15. Tc3 Dh4 16. g3 Sf6 17. Lg2 f1=L 18. e3 Le2 19. Sc4 Lf3 20. Se2 Tg8 21. Tf1 Tg6 22. Lh1 Lg2 23. Tf3 Lf1 24. Ka3 Lc1+ 25. Sb2
play all play one stop play next play all
Matching squares traced by the promoted Bishops! That this is managed without extra-set pieces is astounding. (PR Gianni Donati)
Cook: 1. c4 e5 2. c5 Ld6 3. cxd6 g5 4. d3 g4 5. e3 g3 6. Dg4 c5 7. Sc3 c4 8. Sa4 c3 9. Ld2 Sh6 10. 0-0-0 c2 11. b4 Tg8 12. Kb2 gxf2 13. g3 Tg6 14. Lg2 f1=L 15. Ka3 c1=L+ 16. Sb2 Le2 17. Le1 Ld2 18. Tc1 Sg8 19. Txc8 Lc1 20. Tc3 Lf3 21. Se2 Dh4 22. Tf1 Sf6 23. Lh1 Lg2 24. Tf3 Lf1 25. Dh3
Henrik Juel: an important keyword is missing: Donati theme
same in (some of) P1011889-P1011929 (2018-12-18)
Henrik Juel: Natch 3.1 found nothing in half an hour (2018-12-18)
Michel Caillaud: Reprint : H71 p.585, FIDE Album 2001-03

Cooked using Jacobi 0.7.5 with constraints :
1.c4 e5 2.c5 Ld6 3.cxd6 g5 4.d3 g4 5.e3 g3 6.Dg4 c5 7.Sc3 c4 8.Sa4 c3 9.Ld2 Sh6 10.0-0-0 c2 11.b4 Tg8 12.Kb2 gxf2 13.g3 Tg6 14.Lg2 f1=L 15.Ka3 c1=L+ 16.Sb2 Le2 17.Le1 Ld2 18.Tc1 Sg8 19.Txc8 Lc1 20.Tc3 Lf3 21.Se2 Dh4 22.Tf1 Sf6 23.Lh1 Lg2 24.Tf3 Lf1 25.Dh3

Correction : sTg6 to g4 (21...Tg4 instead of 21...Tg6 in the solution)
With the set of constraints used to uncork the cook, Jacobi 0.7.5 finds only the intended solution... (2021-09-20)
Michel Caillaud: The correction sTg6 to g4 was published in StrateGems 99 (p.138, sept. 2022)
It is C+ by Stelvio 0.93 (2022-12-18)
comment
Keywords: Unique Proof Game, Round Trip, Pure Round Trip (ll), Obvious promotion (l), Promotion (ll), Donati Theme
Genre: Retro
Computer test: Resolution time: Natch 3.3: ---, Euclide 1.11: ---, Stelvio 1.14: 15:10min
FEN: rn2k3/pp1p1p1p/3P1n2/4p3/1P4rq/K1RPPRPQ/PN2N2P/2b1Bb1B
Input: Gerd Wilts, 2004-01-01
Last update: Silvio Baier, 2023-08-15 more...
9 - P1062123
Sören Anton Sörensen
3641 Deutsche Schachzeitung , p. 366, 12/1873
Britisches Problemturnier 1873
Motto: "Look after the Cáby"
1. Preis Set
P1062123
(10+11)
#3

BS Problemid: 47208
Authors: Anonymous
Sources: Maryland Chess Review 1874
Years: 1873
Erweiterung zum 4# unter P1415893
Henrik Juel: 1.Kd2 thr. 2.La4,Sg5+
double threat and dual after 1... Sb7,Sc6 (2024-03-16)
comment
Keywords: Brian Stephenson Collection (47208), Obvious promotion (wLd7)
Genre: 3#
FEN: 1r1n4/3B2p1/1b2b1nB/2p1p3/2p1k1P1/2P1N1pN/4P1P1/3RK3
Reprints: 445 The Westminster Papers 01/07/1874
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2024-03-16 more...
10 - P1062761
Alessandro Cuppini
The Hindu 20/02/1993
5. Lob (i&f)
P1062761
(12+11) C+
#2
1. La3? droht 2. Sc6# 1. ... Txf3!
1. exf7? droht 2. Te6# 1. ... Txc3!

1. Dxe7! droht 2. Dd6#
1. ... Txc3 2. Sc6#
1. ... Txf3 2. exf7#
play all play one stop play next play all
Preisbericht i&f 01/2000, Seite 1871: PR Colin Sydenham
more ...
comment
Keywords: Brian Stephenson Collection (47848), Multiple publication, Obvious promotion (Lh2)
Genre: 2#
Computer test: A. Baumann: Gustav 4.2a
FEN: 8/3BpppN/R3P1p1/3pkPQ1/2pN2P1/2P1rP2/7b/KbB2n2
Reprints: 828 idee & form , p. 1509, 04/1997
Problem Paradise 2000
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-23 more...
11 - P1116096
Erich Brunner
11 Basler Nachrichten 01/01/1937
P1116096
(5+2) C+
#4
1. Lb3 b6 2. L5c4 b5 3. Lg8 b4 4. Sg6#
play all play one stop play next play all
D19LL m
vf: Brunner-Buch S.68, #115 = (V) Basler Nachrichten 1921. Wahrscheinlich Original in BN und (V) in DSB
more ...
comment
Keywords: Miniature Collection (0066762), Obvious promotion (L), Minimal, Miniature
Genre: n#
Computer test: SCHRECKE: Gustav 4.2e
FEN: 5N1k/1p6/4B2P/1B6/8/8/K7/8
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-11-20 more...
12 - P1121412
Werner Speckmann
Deutsche Schachzeitung 11, p. 383, 11/1957
P1121412
(3+3)
#4
1. Kb7 Lgd4 2. Le3+ Ke1 3. Dd2+ Kf1 4. Df2#
1. ... Lad4 2. Lc3+ Kc1 3. Dd2+ Kb1 4. Db2#
play all play one stop play next play all
Q24+ e005 mm
Henrik Juel: dual 1... Lh2 2.Lg5,Le3+ (2023-11-19)
comment
Keywords: Miniature Collection (0069056), Obvious promotion (l), Miniature
Genre: n#
FEN: K7/8/8/8/8/3Q4/3B4/b2k2b1
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2023-11-19 more...
13 - P1139116
Werner Speckmann
86 Die Schwalbe 1959
2. ehr. Erw.
P1139116
(5+2) C+
#4
1. Lg6! Lb7 2. Tf1 Lf3 3. Le6 Ld5 4. Tf8#
1. ... Lc8 2. Ta7 Lb7 3. Le6 Ld5 4. Th7#
play all play one stop play next play all
D27e
Neufassung zu Schwalbe 1953
more ...
comment
Keywords: Miniature Collection (0075197), Obvious promotion (L), Miniature
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 7k/8/b6P/8/4B3/1B6/3K4/R7
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2023-11-19 more...
14 - P1203922
Paul Raican
Pavlos Moutecidis 75 JT 2005-2006
Lob
P1203922
(5+3)
s#11
1. b8=T Ka2 2. g8=L+ Ka1 3. Ke6 Ka2 4. Kf6+ Ka1 5. Kf7 Ka2 6. Kg7+ Ka1 7. Lh7 Ka2 8. Dd5+ Ka1 9. Dc3+ Lb2 10. Da8+ La2 11. Kh8 Lxc3#
play all play one stop play next play all
paul: The last 10 moves tested with Gustav, brute force. (2022-09-11)
comment
Keywords: Obvious promotion
Genre: s#
FEN: 8/1P4P1/8/Q3K3/8/b7/8/kb2Q3
Input: Frank Müller, 2011-10-04
Last update: SBD, 2012-12-05 more...
15 - P1204209
Isai H. Rozenfeld
7337 Schach 11/1973
P1204209
(6+3)
s#2
1. S bel? Sc7!
1. Sg6! Sf6,Sg7 2. Dc8+ Kxc8#
1. Sg6 Sd6! 2. Dc7+ Kxc7#
1. Sg6 Sc7! 2. Dg7 Kc8#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.89 (2023-10-26)
comment
Keywords: Black correction, Obvious promotion
Genre: s#
FEN: b3n3/1k2N3/8/1P6/8/2Q5/7B/6BK
Input: Frank Müller, 2011-10-07
Last update: Frank Müller, 2011-10-07 more...
16 - P1229679
Otto Dehler
5809 Die Schwalbe 08/1939
P1229679
(4+1)
#3*
* 1. ... Kh7 2. Sgf6+ Kh8 3. Sg6#
1. Kf5! Kh7 2. Sgf6+ Kh6 3. Seg8#
play all play one stop play next play all
3 wS
SCHRECKE: C+, popeye 4.87 (2022-08-18)
comment
Keywords: Obvious promotion
Genre: 3#
FEN: 7k/4N3/8/6KN/6N1/8/8/8
Input: Felber, Volker, 2012-01-06
Last update: Felber, Volker, 2012-01-06 more...
17 - P1239714
Frank Fiedler
4621 Freie Presse (Chemnitz) 14/12/2007
Den Schachfreunden vom HSV Eintracht Seiffen und den das Schach sponsorenden Seiffener Handwerkskünstlern gewidmet.
P1239714
(5+2)
#5
1. Sa3! Kd2 2. Scxe2 Kd1 3. Kd3 Ke1 4. Sc2+ Kd1 5. Sf2#
2. ... Ke1 3. Ke3 Kd1 4. Sf2+ Ke1 5. Sc2#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-06-09)
comment
Keywords: Obvious promotion, Symmetrical position, Symbol problem (Schwibbogen), Asymmetrical solution
Genre: n#
FEN: 8/8/8/8/4K3/2N3N1/4p3/1N2k2N
Input: Felber, Volker, 2012-05-26
Last update: Alfred Pfeiffer, 2017-08-02 more...
18 - P1240448
Jorma Pitkänen
Ilta-Sanomat 1997
Dem Match Kasparow-Deep Blue gewidmet
P1240448
(15+4) C+
s#4
1. Dh2 exf6 2. Tg6 hxg6 3. Dh3+ f5+ 4. Dxf5+ gxf5#
1. Dh2 exd6 2. Tc6 bxc6 3. Da2+ d5+ 4. Dxd5+ cxd5#
play all play one stop play next play all
Spätere Versionen siehe P1240450, P1240451, P1240452 und P1240453.
Walter Lindenthal: Illegal (letzer s Zug?) (2023-08-28)
SCHRECKE: Der sK kann zuletzt von d7 oder f7 gekommen sein. (2023-08-28)
Gerald Ettl: So nebenbei habe ich mich gefragt, was die Widmung mit dem s# zu tun hat. Wenn es wenigstens eine Studie gewesen waere haette ich die Widmung einigermassen verstanden. Aber so? (2023-08-29)
comment
Keywords: Asymmetrical solution, Symmetrical position, Obvious promotion
Genre: s#
Computer test: Popeye WINDOWS-32Bit-Version 3. 73 (2048 KB)
FEN: 4B3/1p2p2p/1P1PkP1P/4P3/3BKB2/3NPN2/4Q3/2R3R1
Reprints: A harmonie 108, p. 2011, 12/2011
F38 ASymmetrie 2013
Input: Frank Müller, 2012-06-02
Last update: Alfred Pfeiffer, 2013-06-28 more...
19 - P1242058
Alexander Hildebrand
Kjell Widlert

8196 Schach-Echo 23-24, p. 381, 12/1974
P1242058
(8+10)
s#2
1. Tb7? Ld5!
1. Td5? bxc3!
1. Lf5? Kh3!
1. Kf3 droht 2. Lxg2+ Dxg2#
1. Kf3 Sb2,Se3 2. Txf2+ Dxf2#
play all play one stop play next play all
In USPB wird nur Al. Hildebrand als Autor genannt.
SCHRECKE: C+, popeye 4.89 (2024-03-29)
comment
Keywords: Obvious promotion
Genre: s#
FEN: Q5b1/5R2/B7/8/1pr5/2N3KB/2NR1ppp/3n1kqr
Reprints: 1520 U.S. Problem Bulletin 01-02/1988
Input: Frank Müller, 2012-06-17
Last update: Felber, Volker, 2015-10-04 more...
20 - P1250079
Stefan Schneider
1698 Schach 23 12/1953
2. ehr. Erwähnung
Informalturnier Mehrzüger
P1250079
(9+4)
#4
1. Lg1+? Kxh1 2. g3,g4+ Dxb7!


1. Lc6! Dc7 2. Lg1+ Kxh1 3. Lb6+ Kh2 4. Lxc7#
1. ... Ta6 2. Lg1+ Kxh1 3. La7+ Kh2 4. Lxb8#
1. ... Dd6 2. Lg1+ Kxh1 3. Lc5+ Kh2 4. Lxd6#
play all play one stop play next play all
Henrik Juel: many late duals, e.g., 1.Lc6 Ta4 2.Lg1+ Kxh1 3.g3,g4+ (2022-08-15)
comment
Keywords: Obvious promotion (L)
Genre: n#
FEN: rq6/1B6/8/8/8/pP6/K2PPBPk/1R5N
Reprints: 515 Deutsche Schachzeitung 8, p. 200, 05/1954
202 Problem-Palette , p. 71, 1970
Input: Felber, Volker, 2012-09-28
Last update: Dieter Berlin, 2022-08-15 more...
21 - P1254212
Jörg Varnholt
M9) Problemkiste (175) 02/2008
P1254212
(2+4)
ser-s+++13
Madrasi
1. c4 2. c5 3. c6 4. c7 5. c8=D 6. Dc5 7. Df2 8. Kc2 9. Kd3 10. Ke4 11. Kf5 12. Kg4 13. Kg3 Lxf2+++
play all play one stop play next play all
Arnold Beine: Am Ende ist es ein Matt durch Dreifachschach. (2022-10-26)
SCHRECKE: C+, Jacobi v0.7.5 (2022-10-27)
comment
Keywords: Seriesmover, Madrasi, Move Length Record, Minimal, Excelsior, Promotion, Obvious promotion
Genre: Fairies
FEN: 8/8/8/8/5q2/8/2P4q/1K4bk
Input: Erich Bartel, 2012-11-24
Last update: Alfred Pfeiffer, 2017-12-04 more...
22 - P1254213
Jörg Varnholt
M10) Problemkiste (175) 02/2008
P1254213
(2+5)
ser-s++++6
Madrasi
1. Kc2 2. Kd3 3. Ke4 4. Kf5 5. Kg4 6. Kg3 Lxf2++++
play all play one stop play next play all
Arnold Beine: Am Ende ist es ein Matt durch Vierfachschach. (2022-10-26)
SCHRECKE: C+, Jacobi v0.7.5 (2022-10-27)
comment
Keywords: Seriesmover, Madrasi, Move Length Record, Minimal, Obvious promotion, Alleinunterhalter
Genre: Fairies
FEN: 8/8/8/8/5q2/4q3/5Q1q/1K4bk
Input: Erich Bartel, 2012-11-24
Last update: Alfred Pfeiffer, 2017-12-04 more...
23 - P1254215
Jörg Varnholt
M12) Problemkiste (175) 02/2008
P1254215
(3+7)
ser-s++++++10
Madrasi
1. Kd5 2. a4 3. a5 4. a6 5. a7 6. a8=D 7. Da2 8. Df2 9. Ke5 10. Kf4 Sxg6++++++
play all play one stop play next play all
Arnold Beine: Am Ende ist es ein Matt durch Sechsfachschach. (2022-10-26)
SCHRECKE: C+, Jacobi v0.7.5 (2022-10-27)
comment
Keywords: Seriesmover, Madrasi, Move Length Record, Obvious promotion, Excelsior, Promotion
Genre: Fairies
FEN: 7n/5q2/3qK1Qq/8/4q1q1/7k/P7/8
Input: Erich Bartel, 2012-11-24
Last update: Alfred Pfeiffer, 2017-12-04 more...
24 - P1269140
Alois Johandl
691v idee & form , p. 1356, 01/1996
P1269140
(6+14)
#7
1. Se4? Tg1!
1. Te4! (droht 2. Te8#)
1. ... Dh5 2. Lxb6+ Kb8 3. Tc8+ Kxc8 4. Tc4+ Kb8 5. Lc7+ Kc8 6. Se4 ... 7. Sxd6#
play all play one stop play next play all
Korrektur 01/1997, Seite 1468: wegen illegaler Stellung wBf3 statt sBf3
Anton Baumann: C+ Gustav 4.2a (2022-08-22)
comment
Keywords: Obvious promotion (Ld1)
Genre: n#
FEN: r1k5/ppBp3n/1p1p1p2/6p1/2RR4/5Pr1/3Nn2q/K2b4
Input: Felber, Volker, 2013-05-03
Last update: Felber, Volker, 2016-11-13 more...
25 - P1290197
George Hume
451 Allgemeine Zeitung Chemnitz 08/08/1926
W. Pauly zum 50. Geburtstag gewidmet
P1290197
(8+5) C+
s#2
1. Ld3! Lxd3 2. Lf3+ Lxf3#
1. ... Lbc2 2. Le2+ Lxe2#
1. ... Ldc2 2. Lxc2 Lxc2#
1. ... Le2,Ld1~ 2. Lg6+ Lxg6#
play all play one stop play next play all
more ...
comment
Keywords: Obvious promotion
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/5N2/2B5/4N2k/2B5/6P1/p5PP/rb1b3K
Input: Felber, Volker, 2014-11-05
Last update: Dieter Berlin, 2023-11-27 more...
26 - P1290200
George Hume
452 Allgemeine Zeitung Chemnitz 08/08/1926
W. Pauly zum 50. Geburtstag gewidmet
P1290200
(8+5)
s#2
1. Tg5! Lg4 2. Sxg4 Lh7#,L#
1. ... Lf5 2. Sf3+ Lxf3#
1. ... Le4 2. Tg4+ Lxg4#
1. ... Lf3 2. Sf5+ Lxf5#
1. ... Ldc2 2. Sxc2 Lxc2#
play all play one stop play next play all
A.Buchanan: Popeye v4.87
1.Rg5!
1...Bh7/Bg6/Bd3/Bbc2
2.Sf3+ Bxf3#
2.Rg4+ Bxg4#
1...Bf5 2.Sf3+ Bxf3#
1...Be4 2.Rg4+ Bxg4#
1...Bxh5
2.Sf5+ Bxf5#
2.Sxh5
2...Bh7#/Bg6#/Bf5#/Be4#/Bd3#/Bc2#
1...Bg4 2.Sxg4
2...Bh7#/Bg6#/Bf5#/Be4#/Bd3#/Bc2#
1...Bf3/Be2/Ba4/Bb3 2.Sf5+ Bxf5#
1...Bdc2 2.Sxc2 Bxc2# (2023-04-02)
comment
Keywords: Obvious promotion
Genre: s#
FEN: 8/8/5N2/R6P/3N1P1k/8/p5PP/rb1b3K
Input: Felber, Volker, 2014-11-05
Last update: Felber, Volker, 2014-11-05 more...
27 - P1290847
Carl Eckhardt
627 Allgemeine Zeitung Chemnitz 01/05/1927
P1290847
(13+8)
#2
1. b4! droht 2. Lxc5#
1. ... Lxa2 2. Txe4#
1. ... Sf4 2. De3#
1. ... Se3+ 2. dxe3#
1. ... Dxf3+ 2. Sxf3#
1. ... Df4 2. Txd5#
1. ... Dxa7 2. Df6#
1. ... Dd7 2. Dc3#
1. ... Df8 2. Txd5#
1. ... De7,Dxg6 2. Txd5#,Dc3#
play all play one stop play next play all
Henrik Juel: dual in last variation (2023-05-11)
comment
Keywords: Obvious promotion (a7)
Genre: 2#
FEN: 3R4/B4q2/2P3N1/2rr4/3kn1R1/1P3Q1p/BP1PP1n1/1b3KN1
Reprints: 3 Die Welt am Abend (Essen) 08/08/1928
Input: Felber, Volker, 2014-11-15
Last update: Mario Richter, 2023-05-11 more...
28 - P1295435
Liss Karlsson
2498 The Fairy Chess Review 12/1936
Weihnachtsgruß
P1295435
(6+3)
s#5
b) wLf6->e5 & wTg1->g5
c) wLf6->e5 & sDg7->f6: s#8
a) * 1. ... Dxf6#
1. Ld4 De5 2. Ta6 Df6! 3. Th1+ Kg7 4. T6a7+ Lf7 5. Le5 Dxe5#
1. Ld4 De5 2. Ta6 Dg7 3. Le5 Df6 4. Ta7 Dg7 5. Lf6 Dxf6#
b) 1. Tg6 Kh7 2. Tf6+ Kh8 3. Tf1 Df6 4. Tg1 Dg7 5. Lf6 Dxf6#
c) 1. Tg6 Dg7 2. Tga6 Df6 3. Tf8 Dg7 4. Taa8 Df6 5. T6a7 Dg7 6. Tf1 Df6 7. Tg1 Dg7 8. Lf6 Dxf6#
play all play one stop play next play all
Anton Baumann: a) & b) C+ Gustav 4.2a
c) 3 Kurzlösungen (s#5): 1.Tf1 1.Ld4 1.Ta6
Besser (C+) ist folgende Änderung der Forderungen:
b) wLf6 nach e5 & wTg1 nach a6 c) ferner sDg7 nach f6: s#6
Lösung b) 1.Tg6 Kh7 2.Tf6+ ...
c) 1.Tf8 Dg7 2.Taa8 Df6 3.T6a7 ... (2023-12-04)
comment
Keywords: Aristocrat, Obvious promotion
Genre: s#
FEN: R5bk/R5q1/5B2/8/8/8/8/KB4R1
Input: Frank Müller, 2015-01-18
Last update: Alfred Pfeiffer, 2015-01-19 more...
29 - P1317958
George P. Sphicas
F1106 Probleemblad 01-03/2016
2. Preis
P1317958
(11+3)
ser-s#28
1. c5 2. c6 3. c7 4. c8=D 5. Dc4 6. d8=L 7. Lf6 8. Lc2 9. g6 10. Lc3 11. d4 12. Kd2 13. Kd3 14. Dd2 15. g7 16. g8=S 17. Sf6 18. Se4 19. Te3 20. g4 21. g5 22. g6 23. g7 24. g8=D 25. Dh7 26. f8=T 27. Ta8 28. Ta6 dxc4#
play all play one stop play next play all
paul: This problem obtained 2nd Prize (judge H. Gruber) (2023-12-13)
comment
Keywords: Seriesmover, Obvious promotion (g6), Allumwandlung, konsekutive Umwandlungen 5 (DLSDT)
Genre: Fairies
FEN: 8/3P1P2/1n2k1BQ/3p2P1/2P5/6R1/3PP1P1/4K3
Input: Frank Müller, 2016-03-04
Last update: Dieter Berlin, 2023-12-14 more...
30 - P1320369
Robert A. Lincoln
More Fun with Chess Miniatures 2000
P1320369
(5+2)
#2
b) Lh1->h8
a) 1. Tg2! Ke4 2. Tg4#

b) 1. Tb7! Ke4 2. Tb4#
play all play one stop play next play all
SCHRECKE: b) Es muss heißen: Lh1 nach a8! (2023-05-20)
Henrik Juel: with correct twinning (h1 to a8) C+ Popeye 4.61 (2023-05-21)
comment
Keywords: Obvious promotion (L)
Genre: 2#
FEN: 8/6R1/5K2/5p2/5k2/8/4BP2/7B
Input: Rainer Staudte, 2016-05-22
Last update: Rainer Staudte, 2023-05-20 more...
31 - P1379841
Steven B. Dowd
Mirko Degenkolbe

Springaren 2007
P1379841
(2+15) C+
h#7
Nullstellung
a) -wBg3, +wSe8, sKa1->a2
b) +wTh3
c) +wLh4
a) 1. Ka1 Sd6 2. Ka2 Sc4 3. Ka1 Sxb2 4. Ka2 Sc4 5. Lcb2 Sxd2 6. La1 Sxb3 7. Tb2 Sc1#
b) 1. Ka2 g4 2. Ka1 Txf3 3. Le2+ Kg2 4. d1=S Tf4 5. Sd2 Txb4 6. b1=T Txb3 7. Sb2 Txa3#
c) 1. Ka2 Lf6 2. Ka1 Lxc3 3. Ka2 Lxd2 4. Td3 Le1 5. Kb3 Lxf2 6. Kc3 g4 7. Kd2 Le1#
play all play one stop play next play all
Korrekturfassung zu P1354237
(MD0400a)
more ...
comment
Keywords: under-promotion (s), Obvious promotion, Minimal
Genre: h#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/8/8/8/1p6/brp1ppP1/1prp1p2/knbb1K1n
Input: Felber, Volker, 2020-09-10
Last update: Felber, Volker, 2023-01-12 more...
32 - P1403067
Michael Herzberg
18773 Die Schwalbe 312-1, p. 324, 12/2021
1.-2. Preis
Abt. Mehrzüger
PR Gerhard E. Schoen
P1403067
(11+11)
#15
1. Sg5! Ke5 2. Sc6+ Kd6 3. Sd8 Ke5 4. Sf3+ Kd6 5. Sd4 Ke5 6. S4c6+ Kd6 7. Dg2! Txg2 8. Sd4 Ke5 9. Sf3+ Kd6 10. Sg5 Ke5 11. Sc6+ Kd6 12. Sd4 Ke5 13. Sgf3+ Kd6 14. dxc4 ... 15. e5#
play all play one stop play next play all
18773 (Michael Herzberg). 1.d:c4? [2.e5#] Te1! „Ein kleiner Schritt, der noch viel Arbeit wegen Te1 erfordert.“ (WOe) „Also muss der schwarze Turm g1 nach g2 weggelenkt werden.“ (KHS) 1.Sg5! Ke5 2.Sc6+ Kd6 3.Sd8 Ke5 4.Sf3+ Kd6 5.Sd4 Ke5 6.S4c6+ Kd6 7.Dg2! [8.e5#] T:g2 8.Sd4 (8.d:c4?) Ke5 9.Sf3+ Kd6 10.Sg5 Ke5 11.Sc6+ Kd6 12.Sd4 Ke5 13.Sgf3+ Kd6 14.d:c4 ~ 15.e5#. Der Autor verweist auf die P1364407 und schrieb dazu: „1.Ta4? [2.T:b4 Sc5 3.Te4+ S:e4 4.d4#] 1.– T:a4!, 1.Ta6? [2.L:d6#] Tb6 2.Ta4 [3.Te4#] Tb4 3.T:b4 Sc5 4.Te4+ S:e4 5.d4# 1.– Lf8!,Td4!, 1.Sh4! [2.Sg6#] Kf4 2.Sd5+ Ke5 3.Se7 [4.Shg6#] Kf6 4.Sg2+ Ke5 5.Se3 [6.Sg6#] Kf4 6.S3d5+ Ke5 7.Ta6 [8.L:d6#] Tb6 (8.Ta4? Dh1!,D:e2!) 8.Se3 [9.Sg6#] Kf4 9.Sg2+ Ke5 10.Sh4 [11.Shg6#] Kf4 11.Sd5+ Ke5 12.Se3 [13.Sg6#] Kf4 13.Shg2+ Ke5 14.Ta4 [15.Te4#] Tb4 15.T:b4 Sc5 16.Te4+ S:e4 17.d4#.
Ich wollte ein doppeltes weißes Ballett darstellen in Aktion mit ebenfalls doppelter Rückkehr. Eine geeignete Stellung wurde alsbald gefunden (. . . auch mit schwarzer Dame, wie das #17), war aber der P1364407 zu ähnlich. ‚Mein‘ ideales Schema konnte also nicht verwendet werden und deshalb wurde das Konzept komplett erneuert, sowie die Begründung der Springerrückkehren geändert gegenüber dem #17. Ich finde, die Rösselbewegungen haben einen sehr großen Reiz. Die Begründung der Zugfolge ist hier eine andere. In der P1364407 müssen zwei Linien gesperrt werden, bei mir dienen die ‚Arbeitspositionen‘ der Rössel dazu, eine Linie zum Feld d5 freizumachen, immer e6 gedeckt haltend. Das ganze System funktioniert nur mit dem Konstruktionstrick, dass das Feld f6 durch den schwarzen König betreten werden kann.“ „Umgruppierung zweier Springer mit Umweg über g5, nur um die Diagonale g2-d5 zu öffnen und den Turm g1 wegzulenken. Nach Rückpendel funktioniert der Hauptplan in diesem großartigen Springerritt!“ (FRd) „Im Vorplan liefern sich die beiden weißen Springer ein Feuerwerk mit der Beschäftigungslenkung des schwarzen Königs zwischen e5 und d6 . Ein herrlicher,
neudeutsch-logischer Mehrzüger, der in den Preisbericht gehört!“ (KHS) Keiner erwähnte den
Umwandlungsläufer.
Anton Baumann: C+ Gustav 4.2a (2022-11-01)
comment
Keywords: Obvious promotion (Lg3)
Genre: n#
FEN: 1K6/4p1p1/3kP3/7P/nPpNPpPP/3P1Nbr/p4p1Q/6r1
Input: Felber, Volker, 2022-07-26
Last update: Gunter Jordan, 2023-08-11 more...
33 - P1405223
Moriz Henneberger
3275 Schweizerische Schachzeitung 02/1920
P1405223
(5+2) C+
s#8
1. Kg2 Ka6 2. Dc4+ Kb7 3. Kh1 Kc8 4. De6+ Kb7 5. Lh2 Ka6 6. De2+ Kb7 7. Lbg1 Kxc6 8. Db5+! Kxb5#
1. ... Kc8 2. De6+ Kb7 3. Kh1 Ka6 4. Dc4+ Kb7 5. Lg1 Kc8 6. Dg4+ Kb7 7. Lch2 Kxc6 8. Dd7+! Kxd7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-10-14)
comment
Keywords: Obvious promotion, Aristocrat, Minimal, Miniature
Genre: s#
FEN: b7/1kB5/1BR5/3Q4/8/5K2/8/8
Input: Rainer Staudte, 2022-10-14
Last update: Marcin Banaszek, 2022-10-19 more...
34 - P1406299
Aleksandr Kalinin
4575 Schach , p. 125, 04/1964
P1406299
(9+6) C+
#4
1. Te4! g4 2. Lf2 gxf3 3. Td4 Kb6 4. Ta4#
2. ... g3 3. Ld4 Ka4 4. Lc3#, 4. Lb6#
3. ... Kb4 4. Lb6#
play all play one stop play next play all
In der LB heißt es "War schon besser da, z.B. ..." ->P1406300
more ...
comment
Keywords: Obvious promotion (La7), Indian (Doppel-)
Genre: n#
Computer test: C+ Popeye 4.61, except for the mate dual after 2... g3
FEN: 8/B2p4/B2P4/kP4p1/3R1p2/1p3P2/1P1P2p1/6K1
Input: Felber, Volker, 2022-11-30
Last update: A.Buchanan, 2022-12-01 more...
35 - P1406388
Franz Pachl
Hermann Weissauer

Neue Zürcher Zeitung 2007
P1406388
(11+12) C+
#3
1. Lg8! droht 2. De6#
1. ... fxe4+ 2. Dd5 gxh5 3. Df5#
1. ... fxg4+ 2. Db5 gxh5 3. Df5#
1. ... Ld7 2. e5+ Kxe5 3. Dc3# 2. ... Lxe5 3. Df7#
play all play one stop play next play all
more ...
comment
Keywords: Blocknutzung, pin-mate, Bahnung, Provoked check, Obvious promotion (lf4)
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 2N5/4p1pr/1P3kp1/K2B1prP/b1Q1PbPB/1p6/p2pPN2/8
Reprints: D228 Knobeln Sie auch gern? [Pachl] , p. 140, 2009
Input: Dieter Berlin, 2022-12-03
Last update: Dieter Berlin, 2022-12-03 more...
36 - P1406454
Marko Ylijoki
Henry Tanner

11770 Die Schwalbe 199 02/2003
P1406454
(7+14) C+
h#5*
* 1. ... Lg1-h2#
1. Le1 Lxe3 2. Lf2 Ld2 3. Lxd4 Le3 4. Lxc5 Lg1 5. Lf2 Lg1-h2#
play all play one stop play next play all
Synthese-Meeraner (im Hilfsmatt), Themafigur: wL
Stefan Felber: Schwarzer Umwandlungsläufer! (2022-12-05)
comment
Keywords: Klasinc theme (reziprok L-l, l-L), Line opening, Meerane-Thema, Switchback (Ll), Rücknahme Schlüsselzug, Tempo Loss, Obvious promotion
Genre: h#
Computer test: Gustav 4.1.a
FEN: 8/8/2p5/2Pp4/3P1p1n/2p1pPkn/ppP1Pb2/rrb3BK
Input: Gunter Jordan, 2022-12-04
Last update: Gunter Jordan, 2023-01-20 more...
37 - P1406614
Aleksei Abramenko
WCCC Fujairah 11/2022
5th Place
6th YCCC Section A
P1406614
(11+9)
#2
1. Se~? droht 2. Te4#
1. ... Lc6!

1. Sc5! droht 2. Te4#
1. ... Lc6 2. Sxb3#
1. ... Sxd2/Sd6 2. Lxe5#
1. ... Se3 2. dxe3#
1. ... d5 2. Se2#
1. ... Sd3+ 2. Txd3#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2022-12-11)
comment
Keywords: Obvious promotion (Lf4)
Genre: 2#
FEN: 8/3p1p2/5Ppb/4n3/bPnkNB2/1pN4R/1P1P4/2K1RB2
Input: Hiroaki Maeshima, 2022-12-11
Last update: Felber, Volker, 2022-12-11 more...
38 - P1406770
F. Hrescak
British Chess Magazine 12/1949
P1406770
(6+1)
#4
1. Scd6! Kd4 2. Sd1 Ke5 3. Sb4 Kd4 4. Sc6#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-19)
comment
Keywords: Obvious promotion, Rex solus (s)
Genre: n#
FEN: 2N5/1N6/8/4k1K1/5N2/8/N4N2/8
Input: Rainer Staudte, 2022-12-18
Last update: Gunter Jordan, 2022-12-19 more...
39 - P1407250
Hauke Reddmann
1766 Augsburger Allgemeine 31/12/2022
P1407250
(13+8)
#2
1. Bd5xc6! droht 2. Tc5xe5#, 2. Tg5xe5#
1. ... Le3-d2 2. Sf1xd2#
1. ... Le3-f2 2. Sd1xf2#
1. ... Le3-d4 2. Sf1-d2#
1. ... Le3-f4 2. Sd1-f2#
1. ... Le3xc5 2. Se6xc5#
1. ... Le3xg5 2. Se6xg5#
1. ... Le5xc3 2. Sd1xc3#
1. ... Le5xg3 2. Sf1xg3#
1. ... Le5-d4 2. Se8-d6#
1. ... Le5-f4 2. Se8-f6#
1. ... Le5-c7 2. Se8-f6#
1. ... Le5-g7 2. Se8-d6#
1. ... Le5-b8 2. Se8-f6#
1. ... Le5-h8 2. Se8-d6#
1. ... Sa7xc6 2. Ld7xc6#
1. ... Sf8xd7 2. Lf7xg6#
1. ... Le5-d6 2. Se8xd6#, 2. Se8-f6#
1. ... Le5-f6 2. Se8-d6#, 2. Se8xf6#
play all play one stop play next play all
Henrik Juel: double threat and minor duals (2023-01-14)
comment
Keywords: Obvious promotion (SS)
Genre: 2#
FEN: 4Nn2/n2B1B2/2p1N1p1/1pRPb1R1/4k3/2P1b1P1/4P3/3NKN2
Input: Felber, Volker, 2023-01-14
Last update: Felber, Volker, 2023-01-14 more...
40 - P1408015
Vladimir I. Timonin
5080 Schach , p. 379, 12/1965
P1408015
(8+9)
#3
1. Tc1! Dxe2 2. Ka1
1. ... e5 2. Ka1
1. ... e6 2. Df7
play all play one stop play next play all
Henrik Juel: dual 1... e5 2.Ka1,Df5 (2023-03-02)
comment
Keywords: Obvious promotion (Lg1)
Genre: 3#
FEN: 8/4p1p1/B5Q1/8/4N2N/1Pp5/K1R1Pq1p/4nkbr
Input: Felber, Volker, 2023-03-02
Last update: Felber, Volker, 2023-03-02 more...
41 - P1408367
Udo Degener
Mirko Degenkolbe

1775 Augsburger Allgemeine 04/03/2023
P1408367
(11+12)
#2
zwei weiße Damen
1. Sd5! droht 2. Sb6#, 2. Se7#
1. ... Daxd5 2. Da8#
1. ... Sbxd5 2. Dxb7#
1. ... cxd5 2. Dxd7#
1. ... Tdxd5 2. Dh8#
1. ... exd5 2. Lxd7#
1. ... Sfxd5 2. Tf8#
1. ... Lgxd5 2. Tg8#
1. ... Thxd5 2. h8=D,T#
play all play one stop play next play all
Lösung:
1.Sd5! (droht 2.Sb6 & 2.Se7#)
1. ...D axd5 2.Da8#
1. ...S bxd5 2.Dxb7#
1. ... cxd5 2.Dxd7#
1. ...T dxd5 2.Dh8#
1. ... exd5 2.Lxd7#
1. ...S fxd5 2.Tf8#
1. ...L gxd5 2.Tg8#
1. ...T hxd5 2.h8D,T#

Nach Ausführung des Schlüsselzuges wird der weiße Springer von acht verschiedenen schwarzen Figuren geschlagen. Jede Figur führt ihre Parade von einer anderen Linie aus. Somit ist hier das Maximum erreicht.
Klassischer Zweizüger. Task.
(MD1886)
Henrik Juel: C+ Popeye 4.61, except for double threat (2023-03-19)
comment
Keywords: Obvious promotion (Lg2), Non-standard material
Genre: 2#
Computer test: Gustav 4.1d
FEN: 2k5/1pPp3P/2pPpN2/2N4r/Qn1r1n1p/7B/qQ4bK/5RR1
Input: Felber, Volker, 2023-03-19
Last update: Felber, Volker, 2023-03-19 more...
42 - P1409660
Eberhard Schulze
Schach in Schleswig-Holstein 01/10/2016
P1409660
(7+3) C+
h#2
Zwilling
a) Diagramm
b) sDe5->d3
a) 1. Dxf6+ Kd7 2. Ke5 Lxf6#
b) 1. Dxd2 Kb5 2. Kd3 Txd2#
play all play one stop play next play all
more ...
comment
Keywords: Obvious promotion
Genre: h#
Computer test: Gustav 4.2
FEN: 8/8/2K2P2/4q1B1/2Pkp3/8/1P1P1R2/8
Input: Eberhard Schulze, 2023-05-15
Last update: Rainer Staudte, 2023-05-15 more...
43 - P1410360


P1410360
(9+7)
#3
1. Lc3! droht 2. Lxd7+ Kxc4 3. Tc5# 2. ... b5 3. Se3#,Sb6#
1. ... Ld6 2. Sb6+,Se3+ Kxe6 3. Lxd7# (Co-Dual)
1. ... Txc4+ 2. Lxc4+ Kxc4 3. Tc5#
1. ... dxe6,Lxe6 2. Lc6+ Kxc4,Kxc6 3. Tc5#
play all play one stop play next play all
im 'Schweizer Sportblatt' ohne Angabe von Autor/Quelle abgedruckt. Könnte auch ein Urdruck sein mit Autor H. Fahrni oder J. Juchli
more ...
comment
Keywords: Obvious promotion (l)
Genre: 3#
FEN: 2K1N3/1p1ppb2/4R3/RB1k4/1PNr4/6b1/2P5/B7
Reprints: 1 Schweizer Sportblatt 01/02/1898
Input: Mario Richter, 2023-06-16
Last update: Rainer Staudte, 2023-06-16 more...
44 - P1411247
Rauf Aliovsadzade
Leonid Makaronez

SS065 The Hopper Magazine I03 30/12/2022
P1411247
(13+11) C+
#3
1. Txc4 droht 2. e4+ dxe3ep 3. De4#
1. ... Le3 2. De4+
1. ... fxe2 2. Tf5+
1. ... Dh7,Df7 2. Sxb4+
play all play one stop play next play all
Stefan Felber: Umwandlungsläufer b5! (2023-07-26)
more ...
comment
Keywords: Obvious promotion (L), En passant
Genre: 3#
Computer test: C+ Popeye 4.61
FEN: 2Rn2N1/q7/b2p2Qn/1B1k3K/1rpp2P1/1PPN1pP1/4P1P1/2b2R2
Input: Miguel Ambrona, 2023-07-26
Last update: A.Buchanan, 2023-07-28 more...
45 - P1412064
Herbert Jacobs
5672 Deutsche Schachzeitung , p. 318, 10/1884
P1412064
(7+5) C+
#2
1. e3! e4 2. Tb5#
1. ... Sf4 2. e4#
1. ... Sf6 2. Sh6#
1. ... Se6 2. Lg6#
1. ... Se8 2. Tg5#
play all play one stop play next play all
more ...
comment
Keywords: Obvious promotion (Lf7)
Genre: 2#
Computer test: Gustav 4.1d
FEN: 6R1/5Bn1/8/4pk1n/1R4NK/6p1/4P1P1/8
Input: Felber, Volker, 2023-08-30
Last update: Felber, Volker, 2023-08-30 more...
46 - P1412268
Ferdinand Möller
Basler Nachrichten 12/1923
P1412268
(7+11) C+
#3
1. Sd1! droht 2. Sb2
1. ... Lxd1 2. De4 Kc6 3. Dc4# 2. ... Ka4 3. Sc3#
1. ... Lc4 2. Da4+ Kxa4 3. S1c3#
1. ... Ld3 2. Dxd3+ Kc6 3. Dc4# 2. ... Ka4 3. S1c3#
1. ... f2 2. Dxe2+
1. ... Lc7 2. S1c3+ Kc4 3. De4# 2. ... Kc6 3. Se7#
play all play one stop play next play all
more ...
comment
Keywords: Sacrifice key, Drag-in sacrifice, Blocknutzung, Sacrifice of white pieces (S, D), Obvious promotion (Le2)
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 1b6/rp1p4/p2p1K2/Pk1Np3/1P6/p3Np2/P1Q1b3/8
Reprints: 41 200 Ausgewählte Schachaufgaben , p. 48, 1939
Input: Dieter Berlin, 2023-09-11
Last update: Dieter Berlin, 2023-09-11 more...
47 - P1412662
Stefan Niessen
1592 Deutsche Schachblätter 1973-1974
Informalturnier Vierzüger
3. ehrende Erwähnung
P1412662
(4+10)
#4
1. Ld6! exd6 2. Lc4
play all play one stop play next play all
Umwandlungsläufer e8
Henrik Juel: dual 1... Ta8 2.Lb4,Se3 (2023-10-02)
comment
Keywords: Sacrifice key, Preplan, Nowotny (Voraus-), Obvious promotion
Genre: n#
FEN: 1B1rb3/1p1pp3/5pp1/1B6/8/8/p1p5/k1K2N2
Reprints: Deutsche Schachblätter 2, p. 46, 02/1976
Input: Dieter Berlin, 2023-10-02
Last update: Gunter Jordan, 2023-10-03 more...
48 - P1413906
Andrew Buchanan
3 Problemas 44, p. 1456, 10/2023
after Gyula Bebesi
P1413906
(11+14) C+
h#2
1. axb3ep bxc6+ 2. b5 cxb6ep#
1. exd3ep Dxg8+ 2. d5 cxd6ep#
play all play one stop play next play all
Wh captures axb, XxLc1.
Bl captures cxb/dxc, hxg, gxh/f and either fxe or wBe is waylaid. So the position is legal, with Wh last move being pawn double hop. In particular wKf6-e5 was not the last move

PRA, last move was either b2-b4 or d2-d4. So there is "one solution with two parts".
See P0003365 (cooked) & P1411659 (fixably cooked but non-standard thematic material).
This new version has an obvious promoted unit (non-thematic), but Joaquim Crusats (a noted constructor) could not find any way to do better
Ladislav Packa: Mr. Bebesi's first name is Gyula (not Gyulia). It is the Hungarian version of the name Julius. (2023-12-05)
A.Buchanan: Thanks - edited (2023-12-06)
more ...
comment
Keywords: Partial Retro Analysis (PRA), Obvious promotion (l), En passant as key (2), En passant as mating move
Genre: h#, Retro
Computer test: HC+ Popeye 4.61
FEN: 3rn1bQ/1p1p2PR/B1r3pP/1PP1K2n/pPkPp3/b1p5/N7/2q5
Reprints: SuperProblem (Website) 06/12/2023
Input: A.Buchanan, 2023-12-04
Last update: A.Buchanan, 2023-12-06 more...
49 - P1414902
Werner Schmoll
5040 idee & form 160, p. 5425, 10/2023
P1414902
(10+7) C+
#2
1. g3 droht 2. Dxf4#
1. ... fxg3 2. Df3#
1. ... Lf5 2. Txf4#
1. ... Tf5 2. Sd6#
1. ... e5 2. Sf6#
play all play one stop play next play all
Stefan Felber: Forderung überprüfen! (2024-02-10)
Anton Baumann: Gemäss 'idee & form' Heft 160 ist dies ein #2.
Verführungen gem. Autorabsicht:
1.Tf3?[2.Dxf4#] e5!
1.e3? [2.Dxf4#] Txb4!
1.Lb7?[2.Sd6#] Tc6! (2024-02-10)
Felber, Volker: Forderung geändert. (2024-02-10)
comment
Keywords: Obvious promotion (wLc8)
Genre: 2#
Computer test: Gustav 4.1d
FEN: 2B1NQ1B/8/4p2K/3r3p/1Nr1kpbR/3R4/4P1P1/8
Input: Felber, Volker, 2024-02-10
Last update: Felber, Volker, 2024-02-10 more...
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