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
(1+2) C+
-1(w+s), dann h#1
Aegidius Samuel van Ommeren
4733 Tijdschrift van den NSB 01/1927
(1+2) C+
-1(w+s), dann h#1
R: 1. Kc6xLc7 Te3xDb3, dann 1. Lf4 Dd5#
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...
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...
R: 1. Se4xLd2 Kh7xTg8, dann Lh6 Sf6#
Adrian Storisteanu: Possible twin:
b)wSd2->d6
- 1.Sf7xRd6 Rd8xQd6 & 1.Rd8-f8 Qd6-g6# (2024-03-19)
comment
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...
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...
R: 1. c7xTb8=L Tb7-b8, dann Ta7 c8=D#
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
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...
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...
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=
R: 1. Kf1-g1 Kg3xDf3, dann 1. Kh2 Kf2=
"set play" ( -s, dann h=1 )
R: 1. Ke2xDf3, dann 1. Ke1 Dd3=
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
- 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...
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
(14+15)
BP in 6.0
N statt S in der PAS
wSU,sSU=Nachtreiter
Michel Caillaud
Jacques Rotenberg
3927 Problemkiste 102, p. 168, 12/1995
(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+
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
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: = 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...
Pieces: = 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...
R: 1. c7-c8=T h2-h1=D, dann 1. h1=L cxd8=S=
Cook: NL
R: 1. Tb8-c8 Dh6xDh1, dann 1. Sd8-e6 Dh1xh6=
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
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...
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...
1. ... gxh6ep 2. exf1=L 0-0-0#
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
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...
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...
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=
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...
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...
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#
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).
b) 1. dxe6ep! 0-0-0 2. Dxb7#
oder 1. Ke6 ... 2. h8=D,T#
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
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...
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...
1. cxb3ep! (Tempo) Txg6 2. Le2 0-0#
2. ... Tf1+? 3. Kf2!
Der letzte Zug war b2-b4
2. ... Tf1+? 3. Kf2!
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
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...
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
(13+6) C+
-1w -1s, dann h=1
Erich Bartel
Mario Richter
I Problemkiste , p. 313, 01/2007
EB correction MR
(13+6) C+
-1w -1s, dann h=1
R: d7-d8=D g2xSh1=L, dann 1. gxh1=T dxe8=S=
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
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...
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)
wKc7->.h5
- 1.Kg4xRh5 Re3xQb3 & 1.Re5 Qc4# (2024-03-19)
comment