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11 problem(s) found in 2398 milliseconds (displaying 11 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT S='Suomen Tehtäväniekat' AND S='Problemkiste'] [download as LaTeX]

1 - P0002484
Aegidius Samuel van Ommeren
4733 Tijdschrift van den NSB 01/1927
P0002484
(1+2) C+
-1(w+s), dann h#1
R: 1. Kc6xLc7 Te3xDb3, dann 1. Lf4 Dd5#
play all play one stop play next play all
Adrian Storisteanu: See twin P1216951. Another possible twin (see Thomas Brand's Retroblog 11/2019):
wKc7->.h5
- 1.Kg4xRh5 Re3xQb3 & 1.Re5 Qc4# (2024-03-19)
comment
Keywords: Help retractor
Genre: Retro
Computer test: Popeye Windows-32Bit v4.55 (312 MB) & Rawbats
FEN: 8/2K5/8/8/4k3/1r6/8/8
Reprints: 8458 FEENSCHACH 11/1967
Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Frank Müller, 2011-11-07 more...
2 - P0002493
Bernhard Hegermann
2975 The Fairy Chess Review 12/1937
P0002493
(1+1)
-1(w+s), dann h#1
R: 1. Se4xLd2 Kh7xTg8, dann Lh6 Sf6#
play all play one stop play next play all
Adrian Storisteanu: Possible twin:
b)wSd2->d6
- 1.Sf7xRd6 Rd8xQd6 & 1.Rd8-f8 Qd6-g6# (2024-03-19)
comment
Keywords: Help retractor
Genre: Retro
FEN: 6k1/8/8/8/8/8/3N4/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
3 - P0002517
Peter Kniest
1999 Diagramme und Figuren 15/01/1967
P0002517
(1+1) cooked
-1(w+s), dann h#1
R: 1. c7xTb8=L Tb7-b8, dann Ta7 c8=D#
play all play one stop play next play all
Henrik Juel: Cook: -1.a7xFb8=L Kb7xTa8, 1.Ka6 axb8DT#. (2004-04-01)
Mario Richter: vgl. mit P0006207 (2009-12-24)
Adrian Storisteanu: Possible (expensive, 50% more units) fix: Ka8 Bd8 / Kc8 (2+1) -- R: 1.e7xRd8=B Rd7-d8 & 1.Rc7 e8Q#. On the plus side, there is a wK in the picture now. (2016-02-10)
Adrian Storisteanu: See P1389595 (not clear which was first). (2024-03-19)
comment
Keywords: Help retractor, Promotion (L)
Genre: Retro
FEN: kB6/8/8/8/8/8/8/8
Reprints: Problemkiste 92 04/1994
Input: Gerd Wilts, 1995-06-03
Last update: Alfred Pfeiffer, 2014-06-03 more...
4 - P0002735
Theodor Steudel
3511 Problemkiste 95 10/1994
P0002735
(1+1) C+
(-1w -1s)*, dann h=1
2 Lösungen
R: 1. Kh2-g1 Kg4xDf3, dann 1. Kh4 Df5=
R: 1. Kf1-g1 Kg3xDf3, dann 1. Kh2 Kf2=
"set play" ( -s, dann h=1 )
R: 1. Ke2xDf3, dann 1. Ke1 Dd3=
play all play one stop play next play all

Duplicate Diagram: P1187070

Adrian Storisteanu: Is the star "*" in the stipulation supposed to indicate a kind of "set play" in the retro part -- in effect a "-1s dann h=1"? Because there is one:
- 1.Ke2xQf3 & 1.Ke2-e1 Qf3-d3=. (2015-08-02)
A.Buchanan: That's a clever interpretation Adrian, I am sure you are right, and it's sound according to Deadpos (2024-01-13)
Adrian Storisteanu: A more precise stipulation would be something like: (-w -s)*, dann h=1 (2024-01-14)
A.Buchanan: Good idea. The convention is that * promises at least one set play instance. (2024-01-15)
comment
Keywords: Help retractor, only Kings, Aristocrat, Miniature
Genre: Retro, Fairies
Computer test: C+ Deadpos v2.3 14-Jan-2024
FEN: 8/8/8/8/8/5k2/8/6K1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-18 more...
5 - P0006467
Michel Caillaud
Jacques Rotenberg

3927 Problemkiste 102, p. 168, 12/1995
P0006467
(14+15)
BP in 6.0
N statt S in der PAS
wSU,sSU=Nachtreiter
a) 1. Nxe7 Nxe2 2. Nb1 Nxc1 3. Df3 Nca5 4. Ke2 Ngc6+ 5. Kd3 Nb8 6. Ke4 Ng8+
play all play one stop play next play all
paul: Verified by Jacobi with this input:

stip dia 6
forsyth rnbqkbnr/pppp1ppp/8/8/4K3/5Q2/PPPP1PPP/RN3BNR
cond cavaliermaj (2023-06-16)
more ...
comment
Keywords: Unique Proof Game, Cavalier majeur
Pieces: su = Nightrider (N)
Genre: Retro, Fairies
FEN: r*2nbqkb*2nr/pppp1ppp/8/8/4K3/5Q2/PPPP1PPP/R*2N3B*2NR
Input: Gerd Wilts, 1996-06-16
Last update: A.Buchanan, 2021-02-19 more...
6 - P0006779
Theodor Steudel
(14) feenschach 10, p. 325, 07/1972
P0006779
(3+4) cooked
-1w -1s, dann h=1
R: 1. c7-c8=T h2-h1=D, dann 1. h1=L cxd8=S=
play all play one stop play next play all
Cook: NL
R: 1. Tb8-c8 Dh6xDh1, dann 1. Sd8-e6 Dh1xh6=
Adrian Storisteanu: Possible fix: +wPh5 (4+4). (2015-08-05)
A.Buchanan: A cool fix which keeps miniature status is -bSd8 + bRd8 (2024-01-15)
A.Buchanan: Alas my suggestion is anticipated by P1202424, ah well. (2024-01-16)
comment
Keywords: Allumwandlung (Td:lS), Help retractor, Miniature, Superseded by (P1202424)
Genre: Retro, Fairies
Computer test: C- for original & C+ for Adrian & Andrew's fixes. Deadpos v2.3 14-Jan-2024
FEN: 2Rn4/8/k7/8/K7/8/6p1/6Bq
Reprints: Problemkiste (32) 10/1985
Input: Gerd Wilts, 1996-07-28
Last update: A.Buchanan, 2024-01-18 more...
7 - P1000662
Gianni Donati
R074 Probleemblad 11/1999
P1000662
(10+14) C+
h#1.5 (AP)
1. ... gxh6ep 2. exf1=L 0-0-0#
play all play one stop play next play all
Kommentare:
Als einziger letzter schwarzer Zug, der die weiße Rochade
erhält, kommt nur Bh7-h5 infrage, was dem Weißen den e.p.-Schlag
ermöglicht, um nicht die Rochade oder das Mattnetz zerstören zu
müssen (H.P.Suwe)
Gianni Donati: This intends to show the Valladao theme in the minimum number of moves. (2004-03-19)
VL: The waiting ep capture. Cf. also P1000260
(by T.Petrovic, 2000) somewhat enriched
thematically with the illegal try 2... Rd1#??. (2004-06-03)
A.Buchanan: The “illegal try” 2. Rd1+ is not actually mate because c2 is unprotected. This is kind of “logic dual” spoils the A.P. motivation for the castling (2020-05-20)
Henrik Juel: White captured h6xg7 and once more, e.g. axPb-b8=Y
Black captured cxdxe, dxexf, fxg, and once more, e.g. a2xb1=Y
Possible retroplay 1... h7-h5 2.h6xSg7 Df8-f4 3.h5-h6 Sf4-h3 4.Sh3-g1 etc., preserving the castling right
Any other black last move would force White to retract Ta1, as d2xc3, d2xe3, and h6xh7 would be illegal retractions
I agree with Andrew that the double motivation of 2... 000# is a weakness:
a. legitimizing h7-h5
b. mating (2020-05-21)
Vaclav Kotesovec: Similar problems should not be labeled as "C+". Such a designation is only acceptable if the entire analysis was performed by a computer program. (2023-08-03)
A.Buchanan: See discussion at P0009121 (2023-08-04)
more ...
comment
Keywords: a posteriori (AP), En passant, En passant as key, Castling, Valladao Task, Promotion (l)
Genre: Retro
Computer test: HC+ Popeye v4.87 + simple retro logic
FEN: 6n1/4p1P1/6p1/6Pp/2b1rqrb/2PkPppn/1P2pP2/R3KRN1
Reprints: König & Turm (4), p. 28, 03/2001
H Problemkiste (143) 10/2002
(V2) Problemkiste 156 12/2004
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-08-03 more...
8 - P1004439
Unto Heinonen
A9 Problemkiste 137 10/2001
P1004439
(6+3)
-1w, dann ser-h=9
R: 1. a7-a8=D, dann 1. a1=L 2. Le5 3. Lb8 4. Kc7 5. f2 6. f1=S 7. Sd2 8. Sc4 9. Sxb6 axb8=T=
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (without the retraction, which is unique) (2022-11-08)
comment
Keywords: Help retractor, Seriesmover, Allumwandlung
Genre: Retro, Fairies
FEN: Q2R4/1k6/1N6/B4K2/8/5p2/p7/7B
Input: Gerd Wilts, 2003-01-11
Last update: A.Buchanan, 2024-01-12 more...
9 - P1233676
Sergio Orce
5421 Problemkiste (136) 08/2001
P1233676
(12+10)
#2
(RV)
b) wBb3->b4
a) 1. Ke6! (0-0-0 illegal!) ... 2. h8=D,T#
b) 1. dxe6ep! 0-0-0 2. Dxb7#
oder 1. Ke6 ... 2. h8=D,T#
play all play one stop play next play all
a) 0-0-0 ist illegal. Die wBB haben 5-mal geschlagen, wBBf3/h3 also nicht.
-> sBf2h2 haben 3-mal geschlagen, entweder 3-mal auf schwarz oder nach Rücknahme von g2-g4
-> Lf1 ist nicht unter den Schlagopfern.
-> wBa2 mußte umwandeln. Falls 0-0-0 noch gehen soll, muß die UW auf h8 geschehen sein
-> letzter Schlagfall W×S ist sowieso klar
-> sBa7 muß als Schlagfall für wB dienen. Da e5 es selbst nicht kann, muß er umgewandelt haben, kann dazu aber nur wLf1 schlagen
-> Widerspruch. -> 0-0-0 ist illegal.
b) dito, aber es geht sBa7-a4xLb3-b1 usw.
-> 0-0-0 ist legal. Aber nur, wenn zuletzt e7-e5.
-> 1. dxe6ep, oder falls zuletzt sK/sT-Zug 1. Ke6.
-> "Retrovarianten" (RV) wohl besser als "A posteriori" (AP)
(Übersetzung, Anmerkung und Prüfung durch Hans Gruber).
A.Buchanan: The retro content here is fun, but I don't see why it's suggested that this is AP. (a) is a cant castler, and (b) is a standard PRA matrix. Removing AP as a keyword for this one. (2023-07-21)
comment
Keywords: Valladao Task, Castling, En passant as key, Partial Retro Analysis (PRA)
Genre: Retro, 2#
FEN: r3k3/1pp4P/3p2N1/2NPpK2/4QpP1/1P3PRP/4Pp1p/6n1
Input: Erich Bartel, 2012-03-04
Last update: A.Buchanan, 2023-07-21 more...
10 - P1288169
Kjell Widlert
3027 Problemkiste (82) 08/1992
P1288169
(4+9)
h#2
Gitterschach
1. cxb3ep! (Tempo) Txg6 2. Le2 0-0#
2. ... Tf1+? 3. Kf2!
play all play one stop play next play all
Der letzte Zug war b2-b4
En passant als Tempozug. Die Grundidee (Einfachschritt des wB ist im Gitterbrett automatisch ausgeschlossen) kann man schon in Fairy Chess Review finden. Hier ist sie mit Rochade garniert in offener Stellung. die jedoch keinen anderen letzten Zug erlaubt. (Autor).
Ganz toll gemacht! (HB).
Raffinierter Zugzwang (KF).
Das ist schon gemein, was der Autor mit den Lösern vorhat (HM).
Viel Gitterschach (Doppelschritt, Retropatt des Tg7 und Rochade trotz Le2) läßt den bekannten e.p.-Trick in neuem Licht erscheinen (MR).
Henrik Juel: Where is the promotion needed for Valladao? (2024-02-04)
comment
Keywords: Valladao Task, En passant, Castling, Grid Chess
Genre: Fairies, Retro
FEN: 8/4p1R1/4p1p1/8/1Pp4p/2p2k2/2p5/3bK2R
Input: Erich Bartel, 2014-09-16
Last update: Olaf Jenkner, 2015-03-19 more...
11 - P1414564
Erich Bartel
Mario Richter

I Problemkiste , p. 313, 01/2007
EB correction MR
P1414564
(13+6) C+
-1w -1s, dann h=1
R: d7-d8=D g2xSh1=L, dann 1. gxh1=T dxe8=S=
play all play one stop play next play all
See P0005542.
A.Buchanan: WinChloe incorrectly reports this as M.Rittirsch. But what is the true source & date of this correction? Obviously, it wasn't F.Lapya. (2024-01-19)
Adrian Storisteanu: I'd would have put a wB (instead of the wQ) on d8 -- a subtler non-standard material?!... (2024-01-19)
Adrian Storisteanu: (... Ooops, but then no 'AUW'.) (2024-01-19)
comment
Keywords: Help retractor, Allumwandlung (Dl:tS), Non-standard material (D)
Genre: Retro, Fairies
Computer test: HC+ Deadpos v2.3 14-Jan-2024 + simple retro-logic
FEN: 3Qn2k/7P/6P1/8/8/P4P2/RPPP1p1p/RQK2Bbb
Input: A.Buchanan, 2024-01-18
Last update: A.Buchanan, 2024-01-20 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (8)
Erich Bartel (2)
A.Buchanan (1)