515 problem(s) found in 4007 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Batterieaufbau' AND S='Mate'] [download as LaTeX]
1 - P0001031
Jan R. Mortensen
Deutsche Schachrundschau Caissa 1979
(3+6)
Welches war der letzte Zug?
Schwarz am Zug
(Erster Zug des wUWS?)
Jan R. Mortensen
Deutsche Schachrundschau Caissa 1979
(3+6)
Welches war der letzte Zug?
Schwarz am Zug
(Erster Zug des wUWS?)
R: 1. f7xLg8=S
Keywords: Last Move? (BxL=S), Type B, Promotion (S), Economy record (Last move? Type B), First Move? (US0), Type A, Economy record (First move? Type A)
Genre: Retro
Computer test: RSP 1.2
FEN: k4bNK/4p1pR/5p1p/8/8/8/8/8
Reprints: The Chess Amateur 1979
1.55B Eigenartige Schachprobleme , p. 192, 2010
2.51 Eigenartige Schachprobleme , p. 202, 2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-03-30 more...
Genre: Retro
Computer test: RSP 1.2
FEN: k4bNK/4p1pR/5p1p/8/8/8/8/8
Reprints: The Chess Amateur 1979
1.55B Eigenartige Schachprobleme , p. 192, 2010
2.51 Eigenartige Schachprobleme , p. 202, 2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-03-30 more...
If Black can castle, e.p. is ok:
1. hxg6ep! 0-0 2. h7#
1. ... Tf8,Kf8 2. Td8#
Otherwise Black can't castle:
1. Ke6! ... 2. Td8#
1. hxg6ep! 0-0 2. h7#
1. ... Tf8,Kf8 2. Td8#
Otherwise Black can't castle:
1. Ke6! ... 2. Td8#
Keywords: Cant Castler, Partial Retro Analysis (PRA), Castling (sk), En passant as key
Genre: Retro, 2#
Computer test: HC+ Popeye 4.61 & trivial retro-logic
FEN: 4k2r/8/5B1P/3R1KpP/8/8/8/8
Reprints: (D17) feenschach 27 04/1975
RA64 diagrammes 27 05-06/1977
(1) Die Schwalbe 86 04/1984
Razem 34 23/08/1987
(I) diagrammes 15 07-09/1994
(10) Die Schwalbe 241 02/2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2021-11-30 more...
Genre: Retro, 2#
Computer test: HC+ Popeye 4.61 & trivial retro-logic
FEN: 4k2r/8/5B1P/3R1KpP/8/8/8/8
Reprints: (D17) feenschach 27 04/1975
RA64 diagrammes 27 05-06/1977
(1) Die Schwalbe 86 04/1984
Razem 34 23/08/1987
(I) diagrammes 15 07-09/1994
(10) Die Schwalbe 241 02/2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2021-11-30 more...
1. e4 h5 2. Lb5 h4 3. Lc6 bxc6 4. Dh5 Lb7 5. Dd5 cxd5 6. Sf3 dxe4 7. 0-0 exf3 8. Te1 fxg2 9. Te6 dxe6 10. b4 Kd7 11. Lb2 Kc6 12. Lf6 Kb5 13. c4+ Ka4 14. Sc3+ Ka3 15. Te1 gxf6 and then 16. Tb1! ... 17. Tb3#
TRD: "The point here is that every move of the game is strictly forced in order and kind, the longest such game existant at present. I expect this task to go much further."
TRD: "The point here is that every move of the game is strictly forced in order and kind, the longest such game existant at present. I expect this task to go much further."
Original stipulation was: "White here mated in two and noticed on examining his score that the mate was administered on his 17th move. What was the game?"
A.Buchanan: This is the earliest unique PG recorded in PDB, but Dawson implies earlier, shorter ones exist. Can any of these be traced? (2021-01-22)
comment
A.Buchanan: This is the earliest unique PG recorded in PDB, but Dawson implies earlier, shorter ones exist. Can any of these be traced? (2021-01-22)
comment
Keywords: Unique Proof Game, Move Length Record, Volet Pawn
Genre: Retro
Computer test: Euclide 0.99
FEN: rn1q1bnr/pbp1pp2/4pp2/8/1PP4p/k1N5/P2P1PpP/4R1K1
Reprints: (7) The Chess Amateur 08/1914
136 Ultimate Themes 1938
76 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-01-22 more...
Genre: Retro
Computer test: Euclide 0.99
FEN: rn1q1bnr/pbp1pp2/4pp2/8/1PP4p/k1N5/P2P1PpP/4R1K1
Reprints: (7) The Chess Amateur 08/1914
136 Ultimate Themes 1938
76 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-01-22 more...
4 - P0002321
Samuel Loyd
Le Sphinx 1866
(16+16)
Welches ist die kürzeste Partie, die mit Patt endet?
Samuel Loyd
Le Sphinx 1866
(16+16)
Welches ist die kürzeste Partie, die mit Patt endet?
1. e3 a5 2. Dh5 Ta6 3. Dxa5 h5 4. Dxc7 Tah6 5. h4 f6 6. Dxd7+ Kf7 7. Dxb7 Dd3 8. Dxb8 Dh7 9. Dxc8 Kg6 10. De6= pat
Die (Loydsche) englische Version der Forderung zielt nicht auf Eindeutigkeit ab: "Find how a stalemate might result in ten moves."
in 'Ruy Lopez' abgedruckt in der Rubrik "Partidas de fantasia"
AB: Not quite unique alas. 4 Dxc7 & 5 h4 can be transposed. (2001-10-17)
Kostas Prentos: Besides the minor transposition, there's another totally different solution:
1.c4 d5 2.Db3 Lf5 3.Dxb7 h5 4.Dxa7 Lh7 5.Dxb8 Ta6 6.h4 Th6 7.Dxc7 f6 8.Dxd8+ Kf7 9.Dxd5+ Kg6 10.De6= with many duals, too (2002-07-03)
AB: Yes, I was referring to uniqueness of proof game to reach the diagram position. KP responds to the task which appears here as the stipulation. (2002-07-07)
Yoav Ben-Zvi: What is the most simple stipulation that makes the solution unique?
My candidate: "Shortest game ending in Stalemate, given that White has not moved a Pawn after his fourth move"
I would add the length of the composer's solution as a courtesy to solvers: "Game in less than 10.0 moves ending in Stalemate, given that White has not moved a Pawn after his fourth move" (2012-08-27)
A.Buchanan: Hi YBZ: the proof game that Kostas gave 5bnr/4p1pb/4Qpkr/7p/7P/2P5/PP1PPPP1/RNB1KBNR has 12 solutions. 1.c3 gives another 12 solutions. And there's 2 solutions for Loyd. Out of these 26 indeed only one has the property that Wh gets all pawn moves out of the way before 4th move. But it's just occurred to me that there's a variant of Loyd which begins 1.c3 and wQ develops via a4 & a5, ending with 5bnr/4p1pq/4Qpkr/7p/7P/2P5/PP1PPPP1/RNB1KBNR this has 15 solutions, and in 6 of these, Wh plays both pawn moves as moves 1 or 2. Similarly if 1.c4. This only differs from Prentos' solution in the occupant of h7. So the suggested stipulation alas wouldn't work. I am pretty sure i have seen a longer version which is sound as a PG. (2020-05-28)
A.Buchanan: See P1004131 for a longer sound PG. (2020-05-28)
Yoav Ben-Zvi: The cook noted above means that a more elaborate secondary condition is needed. My suggestion:
"PG that is shortest to end in Stalemate (less than 10.0 moves) and White plays 2 consecutive captures that are each longer than 2 squares".
An alternative is to accept the transposition:
"PG that is shortest to end in stalemate (less than 10.0 moves) and wPc2 does not move, 2 variants". (2020-06-07)
A.Buchanan: Is it known that there are no h=n.5 (or h=n half-duplex) from the game array for n9? (2022-07-13)
A.Buchanan: I read Loyd’s stipulation more as a hard task for composers than a fair ask of solvers. Loyd was a genius so of course he came up with a great answer. Adding a latter-day secondary condition to give an arbitrary uniqueness is no help to solvers, and has an aesthetic price. I imagine that Loyd’s withering reaction - as he generally favoured conceptual elegance over rigorous dual elimination. Non-unique PGs are a bit old-fashioned, but they still have their place and James Malcom proves a master at their efficient construction. I wish that YBZ was still with us to possibly contest my point, RIP. (2022-07-13)
more ...
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in 'Ruy Lopez' abgedruckt in der Rubrik "Partidas de fantasia"
AB: Not quite unique alas. 4 Dxc7 & 5 h4 can be transposed. (2001-10-17)
Kostas Prentos: Besides the minor transposition, there's another totally different solution:
1.c4 d5 2.Db3 Lf5 3.Dxb7 h5 4.Dxa7 Lh7 5.Dxb8 Ta6 6.h4 Th6 7.Dxc7 f6 8.Dxd8+ Kf7 9.Dxd5+ Kg6 10.De6= with many duals, too (2002-07-03)
AB: Yes, I was referring to uniqueness of proof game to reach the diagram position. KP responds to the task which appears here as the stipulation. (2002-07-07)
Yoav Ben-Zvi: What is the most simple stipulation that makes the solution unique?
My candidate: "Shortest game ending in Stalemate, given that White has not moved a Pawn after his fourth move"
I would add the length of the composer's solution as a courtesy to solvers: "Game in less than 10.0 moves ending in Stalemate, given that White has not moved a Pawn after his fourth move" (2012-08-27)
A.Buchanan: Hi YBZ: the proof game that Kostas gave 5bnr/4p1pb/4Qpkr/7p/7P/2P5/PP1PPPP1/RNB1KBNR has 12 solutions. 1.c3 gives another 12 solutions. And there's 2 solutions for Loyd. Out of these 26 indeed only one has the property that Wh gets all pawn moves out of the way before 4th move. But it's just occurred to me that there's a variant of Loyd which begins 1.c3 and wQ develops via a4 & a5, ending with 5bnr/4p1pq/4Qpkr/7p/7P/2P5/PP1PPPP1/RNB1KBNR this has 15 solutions, and in 6 of these, Wh plays both pawn moves as moves 1 or 2. Similarly if 1.c4. This only differs from Prentos' solution in the occupant of h7. So the suggested stipulation alas wouldn't work. I am pretty sure i have seen a longer version which is sound as a PG. (2020-05-28)
A.Buchanan: See P1004131 for a longer sound PG. (2020-05-28)
Yoav Ben-Zvi: The cook noted above means that a more elaborate secondary condition is needed. My suggestion:
"PG that is shortest to end in Stalemate (less than 10.0 moves) and White plays 2 consecutive captures that are each longer than 2 squares".
An alternative is to accept the transposition:
"PG that is shortest to end in stalemate (less than 10.0 moves) and wPc2 does not move, 2 variants". (2020-06-07)
A.Buchanan: Is it known that there are no h=n.5 (or h=n half-duplex) from the game array for n9? (2022-07-13)
A.Buchanan: I read Loyd’s stipulation more as a hard task for composers than a fair ask of solvers. Loyd was a genius so of course he came up with a great answer. Adding a latter-day secondary condition to give an arbitrary uniqueness is no help to solvers, and has an aesthetic price. I imagine that Loyd’s withering reaction - as he generally favoured conceptual elegance over rigorous dual elimination. Non-unique PGs are a bit old-fashioned, but they still have their place and James Malcom proves a master at their efficient construction. I wish that YBZ was still with us to possibly contest my point, RIP. (2022-07-13)
more ...
comment
Keywords: Construction task, Non-Unique Proof Game, Homebase
Genre: Retro
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Reprints: The American Chess Journal , p. 18, 15/06/1876
335 Chess Strategy (Loyd) , p. 174, 1878
Ruy Lopez 3 03/1897
61-IV Sam Loyd and his Chess Problems , p. 58, 1913
61/IV Sam Loyd und seine Schachaufgaben 1926
132 Ultimate Themes 1938
6-5 De Waag 03/10/1941
R424 feenschach 21 04/1974
162 Shortest Proof Games 11/1991
Best Problems 45 2008
idee & form 159, p. 5395, 07/2023
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-08-09 more...
Genre: Retro
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Reprints: The American Chess Journal , p. 18, 15/06/1876
335 Chess Strategy (Loyd) , p. 174, 1878
Ruy Lopez 3 03/1897
61-IV Sam Loyd and his Chess Problems , p. 58, 1913
61/IV Sam Loyd und seine Schachaufgaben 1926
132 Ultimate Themes 1938
6-5 De Waag 03/10/1941
R424 feenschach 21 04/1974
162 Shortest Proof Games 11/1991
Best Problems 45 2008
idee & form 159, p. 5395, 07/2023
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-08-09 more...
1. ... bxc6ep 2. Le7 cxd7#
1. Lc6? bxc6 2. Le7 cxd7# WTM
R: 1. c6-c5? Kd3-e3 2. Dc5-c4+ Ke3-d3 3. Dc4-c5+ retro-loop.
R: 1. c7-c5! Kd3-e3 2. Dc6-c4+ Ke3-d3! clear
Easy to see no last move for White. Moreover, Black just double-hopped to allow sD/wK to avoid retro-loop.
Single clean retro try.
1. Lc6? bxc6 2. Le7 cxd7# WTM
R: 1. c6-c5? Kd3-e3 2. Dc5-c4+ Ke3-d3 3. Dc4-c5+ retro-loop.
R: 1. c7-c5! Kd3-e3 2. Dc6-c4+ Ke3-d3! clear
Easy to see no last move for White. Moreover, Black just double-hopped to allow sD/wK to avoid retro-loop.
Single clean retro try.
Keywords: En passant as key, No legal last move for White
Genre: h#, Retro
Computer test: HC+ Popeye v4.87 & moderate retro-logic
FEN: 3nkr2/3p1r2/1p1npb2/PPpb4/Bpq2PP1/1p2Kpp1/2PPP3/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-12-08 more...
Genre: h#, Retro
Computer test: HC+ Popeye v4.87 & moderate retro-logic
FEN: 3nkr2/3p1r2/1p1npb2/PPpb4/Bpq2PP1/1p2Kpp1/2PPP3/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-12-08 more...
1. gxf3ep Dxh2 2. Ld3 Dxh4#
7 - P0005358
Thomas R. Dawson
(4) The Chess Amateur 08/1914
(9+12) C+
Black, having just made hist 25th move, is it possible for White to mate in 2?
(BP in 24,5)
Thomas R. Dawson
(4) The Chess Amateur 08/1914
(9+12) C+
Black, having just made hist 25th move, is it possible for White to mate in 2?
(BP in 24,5)
1. Sc3 a5 2. Se4 Sa6 3. b4 a4 4. b5 a3 5. d4 b6 6. d5 Lb7 7. d6 exd6 8. Lf4 Dh4 9. bxa6 Dh3 10. c4 Sf6 11. Sxf6+ gxf6 12. c5 Lf3 13. exf3 Lh6 14. Lb5 c6 15. Kf1 cxb5 16. Se2 dxc5 17. Ld6 Ld2 18. Tg1 La5 19. gxh3 h6 20. Tg5 hxg5 21. Kg2 Th4 22. Db1 Ta4 23. Db4 cxb4 24. Sf4 gxf4 25. Tg1
Black can have wasted only one move and so cannot have moved K or KR, which would require a second waste move returning to diagram. Hence Black is legally entitled to castle. Therefore White mates in 2 by: 1. Kh1! 0-0-0 2. Tc1, else 2. Tg8
Black can have wasted only one move and so cannot have moved K or KR, which would require a second waste move returning to diagram. Hence Black is legally entitled to castle. Therefore White mates in 2 by: 1. Kh1! 0-0-0 2. Tc1, else 2. Tg8
Moldenhauer: Computerprüfung: C+ Stelvio NUPG cooked 1 Sekunde.
Keine Lösung: BP 23.5, BP 24.0.
Wenn Schwarz seinen 25. b3 spielt ist kein Matt in 2 möglich.
Wenn angenommen wird das Weiß aus dieser Stellung nochmals
ziehen darf dann Matt in 2 Zügen.
Notation: 1.Sc3 a5 2.Se4 Sa6 3.b4 a4 4.b5 a3 5.d4 b6 6.d5 Lb7 7.d6 exd6
8.Lf4 Dh4 9.bxa6 Dh3 10.c4 Sf6 11.Sxf6+ gxf6 12.c5 Lf3 13.exf3 Lh6
14.Lb5 c6 15.Kf1 cxb5 16.Se2 dxc5 17.Ld6 Ld2 18.Tg1 La5 19.gxh3 h6
20.Tg5 hxg5 21.Kg2 Th4 22.Db1 Ta4 23.Db4 cxb4 24.Sf4 gxf4 25.Tg1 (2023-04-06)
A.Buchanan: Should the stip be something like:
Position after White’s 25th move.
Can Black play to avoid being mated in 2?
But both b3 and Rc8 seem to let Black escape (2023-04-06)
more ...
comment
Keine Lösung: BP 23.5, BP 24.0.
Wenn Schwarz seinen 25. b3 spielt ist kein Matt in 2 möglich.
Wenn angenommen wird das Weiß aus dieser Stellung nochmals
ziehen darf dann Matt in 2 Zügen.
Notation: 1.Sc3 a5 2.Se4 Sa6 3.b4 a4 4.b5 a3 5.d4 b6 6.d5 Lb7 7.d6 exd6
8.Lf4 Dh4 9.bxa6 Dh3 10.c4 Sf6 11.Sxf6+ gxf6 12.c5 Lf3 13.exf3 Lh6
14.Lb5 c6 15.Kf1 cxb5 16.Se2 dxc5 17.Ld6 Ld2 18.Tg1 La5 19.gxh3 h6
20.Tg5 hxg5 21.Kg2 Th4 22.Db1 Ta4 23.Db4 cxb4 24.Sf4 gxf4 25.Tg1 (2023-04-06)
A.Buchanan: Should the stip be something like:
Position after White’s 25th move.
Can Black play to avoid being mated in 2?
But both b3 and Rc8 seem to let Black escape (2023-04-06)
more ...
comment
Keywords: Castling, Non-Unique Proof Game
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio NUPG cooked 1 Sekunde. Keine Lösung: BP 23.5, BP 24.0.
FEN: r3k3/3p1p2/Pp1B1p2/bp6/rp3p2/p4P1P/P4PKP/6R1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-06 more...
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio NUPG cooked 1 Sekunde. Keine Lösung: BP 23.5, BP 24.0.
FEN: r3k3/3p1p2/Pp1B1p2/bp6/rp3p2/p4P1P/P4PKP/6R1
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-04-06 more...
1. fxg6ep+ Kg5 2. Lh4#
R: 1. g7-g5
R: 1. g7-g5
Keywords: En passant as key
Pieces:
= Grasshopper (G)
Genre: Retro, 2#, Fairies
Computer test: HC+ Popeye 4.61 after very simple analysis
FEN: 8/5*2Q1K/5P1P/5Ppk/6p1/6B1/6N1/8
Reprints: 115 Caissa's Wild Roses 1935
Input: Gerd Wilts, 1996-07-16
Last update: A.Buchanan, 2021-05-03 more...
Pieces:
= Grasshopper (G)
Genre: Retro, 2#, Fairies
Computer test: HC+ Popeye 4.61 after very simple analysis
FEN: 8/5*2Q1K/5P1P/5Ppk/6p1/6B1/6N1/8
Reprints: 115 Caissa's Wild Roses 1935
Input: Gerd Wilts, 1996-07-16
Last update: A.Buchanan, 2021-05-03 more...
a) +wKc8?: Schwarz hat keinen letzten Zug
b) +wKg7: 1. ... Gc8 2. Gf4 Gh8
b) +wKg7: 1. ... Gc8 2. Gf4 Gh8
milan: +wKd6 wGc4-b4 bGe2-e1 1. bGe1-a5 K×c7 2.Ga-f5 Gb8 = all pieces cooperating.
h#2 +wGb8 wGe4 1.bGa5 Ke7 2.Gf5 Gf8# M.Frelih (2021-09-05)
more ...
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h#2 +wGb8 wGe4 1.bGa5 Ke7 2.Gf5 Gf8# M.Frelih (2021-09-05)
more ...
comment
Keywords: Add pieces
Pieces: = Grasshopper (G)
Genre: Retro, Fairies
FEN: k7/p1*2q5/P7/4*2Q3/2*2Q5/8/4*2q3/8
Reprints: 73 C. M. Fox, His Problems 1936
Input: Gerd Wilts, 1996-07-17
Last update: A.Buchanan, 2022-10-22 more...
Pieces:
= Grasshopper (G)
Genre: Retro, Fairies
FEN: k7/p1*2q5/P7/4*2Q3/2*2Q5/8/4*2q3/8
Reprints: 73 C. M. Fox, His Problems 1936
Input: Gerd Wilts, 1996-07-17
Last update: A.Buchanan, 2022-10-22 more...
10 - P0008784
Niels Høeg
The Chess Amateur 07/1926
(1+1)
Längste BP ohne Schach. Welches war der letzte Zug?
Niels Høeg
The Chess Amateur 07/1926
(1+1)
Längste BP ohne Schach. Welches war der letzte Zug?
R: 5899. Kg2xTh1
The game ends after 50 consecutive moves without captures or pawn moves (loss of castling right is not included here), or when there is not enough material to mate (say K-K or K-KS). There are 30 captures and 96 pawn moves (including 8 pawn captures) available, so the longest game seems to last (30+96-8)x50=5900 moves. This cannot be achieved because of the move-loss when the draw-preventing move shifts between white and black. Niels Høeg believed that 2 moves were lost and stated the solution as 5898.- Kb7xTa8. Karl Fabel later showed that only 1.5 moves need be lost.
Since 1926, there have been some relevant innovations to rules and conventions
(1) 50 move rule applies only to retro compositions, and will trigger automatically (no issue with writing down the move). (Codex 1953?)
(2) Removal of rules about draw by insufficient material (Laws 1997)
(3) Dead position rule introduced (Laws 1997)
(4) 75 move rule introduced (Laws 2014)
(5) Dead position rule applies only to retro compositions (Codex 2015)
(6) Articles 9.2 & 9.3 apply to chess problems - this includes 50 move rule and excludes 75 move rule (Codex 2019)
This is certainly a composition rather than a question about over the board chess. And it is certainly a retro composition. So the 50 move rule will dominate the 75 rule. The standard interpretation of interaction between 50 move rule and Dead Position in compositions is that Dead Position assessment *is* aware of looming automatic draw by 50 moves. (Note there is a similar assessment for interaction between Dead Position and Draw by Repetition.)
So we can argue that the game cannot last to 5898.5 moves, because the final move leads to a mandatory draw: either the king captures the last officer, or the king avoids the capture and the game ends in draw under the 50 move rule. So the position is dead at 5898.0. But even 5898.0 is too long for the diagram position with the kings so far apart. In the alternate reality if the last capture of a rook does not take place, there must be sufficient moves left for the kings to come together so that the rook can deliver checkmate. This will take at least 6.0 moves.
There is also still an ambiguity in the rules as to whether checkmate overrides draw by 50 moves. This is explicitly mentioned in the 75 move rule, but not in 50 move rule. I assume that checkmate *does* take priority.
Or does a valid problem only exist in the context of the rules and conventions that pertained at the time of its composition? The Codex does not opine on this general point.
Compare P1331022
The game ends after 50 consecutive moves without captures or pawn moves (loss of castling right is not included here), or when there is not enough material to mate (say K-K or K-KS). There are 30 captures and 96 pawn moves (including 8 pawn captures) available, so the longest game seems to last (30+96-8)x50=5900 moves. This cannot be achieved because of the move-loss when the draw-preventing move shifts between white and black. Niels Høeg believed that 2 moves were lost and stated the solution as 5898.- Kb7xTa8. Karl Fabel later showed that only 1.5 moves need be lost.
Since 1926, there have been some relevant innovations to rules and conventions
(1) 50 move rule applies only to retro compositions, and will trigger automatically (no issue with writing down the move). (Codex 1953?)
(2) Removal of rules about draw by insufficient material (Laws 1997)
(3) Dead position rule introduced (Laws 1997)
(4) 75 move rule introduced (Laws 2014)
(5) Dead position rule applies only to retro compositions (Codex 2015)
(6) Articles 9.2 & 9.3 apply to chess problems - this includes 50 move rule and excludes 75 move rule (Codex 2019)
This is certainly a composition rather than a question about over the board chess. And it is certainly a retro composition. So the 50 move rule will dominate the 75 rule. The standard interpretation of interaction between 50 move rule and Dead Position in compositions is that Dead Position assessment *is* aware of looming automatic draw by 50 moves. (Note there is a similar assessment for interaction between Dead Position and Draw by Repetition.)
So we can argue that the game cannot last to 5898.5 moves, because the final move leads to a mandatory draw: either the king captures the last officer, or the king avoids the capture and the game ends in draw under the 50 move rule. So the position is dead at 5898.0. But even 5898.0 is too long for the diagram position with the kings so far apart. In the alternate reality if the last capture of a rook does not take place, there must be sufficient moves left for the kings to come together so that the rook can deliver checkmate. This will take at least 6.0 moves.
There is also still an ambiguity in the rules as to whether checkmate overrides draw by 50 moves. This is explicitly mentioned in the 75 move rule, but not in 50 move rule. I assume that checkmate *does* take priority.
Or does a valid problem only exist in the context of the rules and conventions that pertained at the time of its composition? The Codex does not opine on this general point.
Compare P1331022
Duplicate Diagram: P1101148, P1189676, P1191185, P1304589
A.Buchanan: There's a question whether DP rule has visibility of 3Rep & 50M state. The current consensus among most of the tiny group who might care is that for retros, it does have visibility, but for purely forward problems, it does not. This align with the idea that by default 50M & DP rules apply only to retros (2023-09-06)
A.Buchanan: The old intended interpretation is protected under the Golden Age principle. Suppose we do apply modern rules, codex & clarifications. If Black just played Kb7xRa8, then the alternative leading to mate takes 7.0 moves, so this must have been Black's 5892nd move at the latest. If White just moved, then it was White's 5892nd at latest. So to maximize the length of the game, Black moved last. (2023-09-06) edit (2023-09-06)
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A.Buchanan: The old intended interpretation is protected under the Golden Age principle. Suppose we do apply modern rules, codex & clarifications. If Black just played Kb7xRa8, then the alternative leading to mate takes 7.0 moves, so this must have been Black's 5892nd move at the latest. If White just moved, then it was White's 5892nd at latest. So to maximize the length of the game, Black moved last. (2023-09-06) edit (2023-09-06)
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Keywords: Longest Proof Game, Last Move?, only Kings, Non-Unique Proof Game, Dead Position, 50 move rule, Constrained problem, Type A, Miniature, Golden Age (pre-dead), Aristocrat
Genre: Mathematics, Retro
FEN: k7/8/8/8/8/8/8/7K
Reprints: Schackproblemet 1928
Schach und Zahl 1966
Input: Gerd Wilts, 1997-06-20
Last update: A.Buchanan, 2024-01-18 more...
Genre: Mathematics, Retro
FEN: k7/8/8/8/8/8/8/7K
Reprints: Schackproblemet 1928
Schach und Zahl 1966
Input: Gerd Wilts, 1997-06-20
Last update: A.Buchanan, 2024-01-18 more...
1. a5 Kc1 2. a4 Kd2 3. a3 Kd3 4. Ka4 Kc4 5. a5 b3#
en-passant!-Vermeidung, Echo
Bernd Schwarzkopf: Nicht: 1.Kb4 Kc2 2.a5 Kd3 3.a4 Kd4 4.Ka5 Kc5 5.a6 b2-b4+ (6.a4xb3 ep!) (2021-09-04)
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Bernd Schwarzkopf: Nicht: 1.Kb4 Kc2 2.a5 Kd3 3.a4 Kd4 4.Ka5 Kc5 5.a6 b2-b4+ (6.a4xb3 ep!) (2021-09-04)
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Keywords: Echo
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/p7/p7/8/8/1k6/1P6/1K6
Reprints: 53 Ideal-Mate Encyclopedia Vol.1 1999
Input: Gerd Wilts, 1996-06-06
Last update: hpr, 2010-02-19 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/p7/p7/8/8/1k6/1P6/1K6
Reprints: 53 Ideal-Mate Encyclopedia Vol.1 1999
Input: Gerd Wilts, 1996-06-06
Last update: hpr, 2010-02-19 more...
1. Lh7 Ke3 2. Kg6 Kxd3 3. Lg8 Ke4 4. Kf7+ Kd5 5. Lf5 Kc6 6. Ke6 d4 7. Lf7 d5#
Hilfsmattinder!Doppelinder
2 gleichfarbige sL
Yuri Bilokin: possible without two bishop of the same color –bBb3, +bQa2, bBe79-bPe7) 8/4b3/5p1k/4p3/4b3/3p4/q2P1K2/8 (2+7) h#7 1.Bh7 Ke3 2.Kg6 Kxd3 3.Qg8 Ke4 4.Kf7+ Kd5 5.Bf5 Kc6 6.Ke6 d4 7.Qf7 d5# (IM) (2022-07-03)
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2 gleichfarbige sL
Yuri Bilokin: possible without two bishop of the same color –bBb3, +bQa2, bBe79-bPe7) 8/4b3/5p1k/4p3/4b3/3p4/q2P1K2/8 (2+7) h#7 1.Bh7 Ke3 2.Kg6 Kxd3 3.Qg8 Ke4 4.Kf7+ Kd5 5.Bf5 Kc6 6.Ke6 d4 7.Qf7 d5# (IM) (2022-07-03)
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Keywords: Hilfsmatt-Inder (lklk), Pawn mate, Ideal mate, Selfblock, Minimal (B)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/4p3/5p1k/4p3/4b3/1b1p4/3P1K2/8
Reprints: (2) idee & form 55, p. 1550, 07/1997
180 Ideal-Mate Encyclopedia Vol.1 1999
UR5 feenschach 231, p. 431, 07-09/2018
Input: Gerd Wilts, 1996-06-06
Last update: Gunter Jordan, 2020-04-02 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/4p3/5p1k/4p3/4b3/1b1p4/3P1K2/8
Reprints: (2) idee & form 55, p. 1550, 07/1997
180 Ideal-Mate Encyclopedia Vol.1 1999
UR5 feenschach 231, p. 431, 07-09/2018
Input: Gerd Wilts, 1996-06-06
Last update: Gunter Jordan, 2020-04-02 more...
1. f1=S Kf4 2. Se3 dxe3 3. d2 e4 4. d1=S e5 5. Se3 e6 6. Sf5 e7 7. Sg7 exf8=S#
Unterverwandlung!Springer!3-fach
Yuri Bilokin: more economical bNh6-f6(-bPf6), bPh5-d5, then a1=b1 6n1/6b1/6nk/4p3/8/4p1K1/4P1p1/8 (2+7) h#7
1.g1=S Kg4 2.Sf3 exf3 3.e2 f4 4.e1=S f5 5.Sf3 f6 6.Sg5 f7 7.Sh7 fxg8=S# (MM)
Slow Excelsior. Active sacrifice (black). Annihilation.
Excelsior (white). Long-trip (bS, promoted, 3) Phoenix. Promotion (Sss, 1, 2)
Model mate × 1 (2023-05-10)
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Yuri Bilokin: more economical bNh6-f6(-bPf6), bPh5-d5, then a1=b1 6n1/6b1/6nk/4p3/8/4p1K1/4P1p1/8 (2+7) h#7
1.g1=S Kg4 2.Sf3 exf3 3.e2 f4 4.e1=S f5 5.Sf3 f6 6.Sg5 f7 7.Sh7 fxg8=S# (MM)
Slow Excelsior. Active sacrifice (black). Annihilation.
Excelsior (white). Long-trip (bS, promoted, 3) Phoenix. Promotion (Sss, 1, 2)
Model mate × 1 (2023-05-10)
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Keywords: Excelsior white (auto key), under-promotion
Genre: h#
Computer test: C+ PY V3.52.--
FEN: 5n2/5p2/5pkn/7p/8/3p1K2/3P1p2/8
Reprints: 198 Ideal-Mate Encyclopedia Vol.1 1999
Input: Gerd Wilts, 1996-06-06
Last update: Erich Bartel, 2011-07-06 more...
Genre: h#
Computer test: C+ PY V3.52.--
FEN: 5n2/5p2/5pkn/7p/8/3p1K2/3P1p2/8
Reprints: 198 Ideal-Mate Encyclopedia Vol.1 1999
Input: Gerd Wilts, 1996-06-06
Last update: Erich Bartel, 2011-07-06 more...
1. d5 Kb7 2. d4 Kc6 3. d3 Kd5 4. d2 Ke4 5. d1=S Kf3 6. Se3 Kf2 7. Kd2 Kxg1 8. Ke1 Kh2 9. Kf2 Kh3 10. Kg1 Kg3 11. Kh1 Lh3 12. Sf1 Kf2 13. Sh2 Lg2#
Keywords: under-promotion (s), Excelsior black, Minimal (L), Miniature, Selfblock, Ideal mate, Corner mate, Round Trip (K-5), Klasinc theme (K-k)
Genre: h#
Computer test: Alybadix
FEN: K7/3p4/8/8/8/2k5/8/5Br1
Reprints: (5) feenschach 40 11-12/1977
(8) Jugendschach 38 22/07/1983
Rex Multiplex 13, p. 427, 01-03/1985
Ideal-Mate Review 29 07-09/1988
Mat Plus 11 1996
1138 Ideal-Mate Encyclopedia Vol.1 1999
671 Minimalkunst im Schach 2006
Springaren 162, p. 74, 06/2022
B Die Schwalbe 315, p. 539, 06/2022
Input: Gerd Wilts, 1996-06-06
Last update: Gunter Jordan, 2023-01-28 more...
Genre: h#
Computer test: Alybadix
FEN: K7/3p4/8/8/8/2k5/8/5Br1
Reprints: (5) feenschach 40 11-12/1977
(8) Jugendschach 38 22/07/1983
Rex Multiplex 13, p. 427, 01-03/1985
Ideal-Mate Review 29 07-09/1988
Mat Plus 11 1996
1138 Ideal-Mate Encyclopedia Vol.1 1999
671 Minimalkunst im Schach 2006
Springaren 162, p. 74, 06/2022
B Die Schwalbe 315, p. 539, 06/2022
Input: Gerd Wilts, 1996-06-06
Last update: Gunter Jordan, 2023-01-28 more...
15 - P0503025
Norman Alasdair Macleod
R. Tony Lewis
diagrammes 03-04/1982
2. Preis
6. Thematurnier
(3+5) C+
h#2
4.1...
Norman Alasdair Macleod
R. Tony Lewis
diagrammes 03-04/1982
2. Preis
6. Thematurnier
(3+5) C+
h#2
4.1...
1) 1. Kc7 e8=D 2. Db6 Dfe7#
2) 1. Kb7 e8=L 2. Ka8 Lc6#
3) 1. Kd7 e8=T 2. Dc6 De7#
4) 1. Dc4 e8=S 2. Kd5 Dd6#
2) 1. Kb7 e8=L 2. Ka8 Lc6#
3) 1. Kd7 e8=T 2. Dc6 De7#
4) 1. Dc4 e8=S 2. Kd5 Dd6#
(KSp)
t/Allumwandlung, u/61103, t/sK-Korrespondenz
A.Buchanan: A pity that 1 & 3 both end with 2...Dfe7# (2023-03-14)
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t/Allumwandlung, u/61103, t/sK-Korrespondenz
A.Buchanan: A pity that 1 & 3 both end with 2...Dfe7# (2023-03-14)
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Keywords: Allumwandlung, Figurenspiel
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 5Q2/n3P3/2k1q3/7b/4p3/K7/8/8
Reprints: feenschach 61 08/1982
13 The Modern Helpmate in two 1989
Input: Erich Bartel, 1996-09-03
Last update: A.Buchanan, 2023-03-14 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 5Q2/n3P3/2k1q3/7b/4p3/K7/8/8
Reprints: feenschach 61 08/1982
13 The Modern Helpmate in two 1989
Input: Erich Bartel, 1996-09-03
Last update: A.Buchanan, 2023-03-14 more...
1. Kc5 Ta2 2. Kb5 Kd5 3. Kb4 Kc6 4. Kc4 Ta4#
Keywords: Pure Round Trip (k)
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/8/8/2k1K3/2p5/1RP5/8
Reprints: Problemkiste 99 06/1995
1936 Ideal-Mate Encyclopedia Vol.1 1999
Problemkiste 121 02/1999
r628 Mirador 06/2002
153) Hobelspäne (2) 28/05/2017
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2019-05-15 more...
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/8/8/2k1K3/2p5/1RP5/8
Reprints: Problemkiste 99 06/1995
1936 Ideal-Mate Encyclopedia Vol.1 1999
Problemkiste 121 02/1999
r628 Mirador 06/2002
153) Hobelspäne (2) 28/05/2017
Input: hpr, 1996-09-23
Last update: Alfred Pfeiffer, 2019-05-15 more...
1. Dxe5+ Lf5 2. Dxd4 Lc2 3. De4 Lb3#
NL:
1. d1=S Le7 2. Sxb2 Sb3 3. f1=S Sc1#
NL:
1. d1=S Le7 2. Sxb2 Sb3 3. f1=S Sc1#
Korrekturvorschlag HJS Co+:wKg5, wLc2f6, wSc5, wBb2d4e5g4, sKa2, sDe4, sTa1h1, sLb1d8, sBb4d5e6f2f7
milan: +wPd6 M.Frelih (2021-12-01)
A.Buchanan: 3b4/5p2/4pB2/2NpP1K1/1p1Pq1P1/8/kPB2p2/rb5r as specified in Korrekturvorschlag HJS is C+ with 2 fewer units (2021-12-02)
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milan: +wPd6 M.Frelih (2021-12-01)
A.Buchanan: 3b4/5p2/4pB2/2NpP1K1/1p1Pq1P1/8/kPB2p2/rb5r as specified in Korrekturvorschlag HJS is C+ with 2 fewer units (2021-12-02)
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Keywords: Pure Round Trip (d)
Genre: h#
FEN: 3b2n1/5p2/4pB2/1pNpP1K1/3Pq1P1/8/kPBp1p1r/rb6
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-19 more...
Genre: h#
FEN: 3b2n1/5p2/4pB2/1pNpP1K1/3Pq1P1/8/kPBp1p1r/rb6
Input: hpr, 1996-09-23
Last update: hpr, 1999-06-19 more...
1. Da6+ Ta5 2. Tb6 Tb5 3. Th6 Txg5#
NL:
1. De6 Txf7 2. Dg4 Tb5 3. g6 Txh7#
NL:
1. De6 Txf7 2. Dg4 Tb5 3. g6 Txh7#
Yuri Bilokin: correction wKa1-f1, wRb1-f2, bRb7-b6, +bBh1, +bNg2, -bPf7 8/1r4pp/7q/5Rbk/7p/6p1/5Rn1/5K1b (3+10) h#3
1.Qa6+ Rb5 2.Rb6 Rff5 3.Rh6 Rxg5# (MM)
Blocking piece replacement (bQ-bR)
Helledie theme
Hideaway (bQ, checking)
Loyd's clearance (black, bQ-bR, pure, 7, 6)
Model mate × 1 (2023-05-02)
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1.Qa6+ Rb5 2.Rb6 Rff5 3.Rh6 Rxg5# (MM)
Blocking piece replacement (bQ-bR)
Helledie theme
Hideaway (bQ, checking)
Loyd's clearance (black, bQ-bR, pure, 7, 6)
Model mate × 1 (2023-05-02)
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Keywords: Check Protection
Genre: h#
FEN: 1r6/5ppp/7q/5Rbk/7p/6p1/8/KR6
Input: Markus Manhart, 1997-06-27
Last update: hpr, 1999-10-17 more...
Genre: h#
FEN: 1r6/5ppp/7q/5Rbk/7p/6p1/8/KR6
Input: Markus Manhart, 1997-06-27
Last update: hpr, 1999-10-17 more...
1. ... Sf2 2. Kg1 g3 3. Kh2 Sg4+ 4. Kh3 Lg2#
Jean Marc Loustau: The setting is not legal, but it is without impotance here... Let us say it is "fairy" (2003-05-08)
A.Buchanan: Legality/illegality is orthogonal to fairy. Let us say here it is "not fairy". (2023-07-09)
Adrian Storisteanu: Add, say, "circe" under the diagram, and all is pretty cool. Even cooler, "chess960". (2023-07-10)
paul: cond einstein
stip h#2.5 forsyth 8/8/8/7k/8/5K1B/3R2P1/8
Two solutions (2023-07-10)
comment
A.Buchanan: Legality/illegality is orthogonal to fairy. Let us say here it is "not fairy". (2023-07-09)
Adrian Storisteanu: Add, say, "circe" under the diagram, and all is pretty cool. Even cooler, "chess960". (2023-07-10)
paul: cond einstein
stip h#2.5 forsyth 8/8/8/7k/8/5K1B/3R2P1/8
Two solutions (2023-07-10)
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Keywords: Illegal position (wLh1), Miniature, Symmetrical constellation
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/8/5K1N/6P1/5k1B
Reprints: 1683 Ideal-Mate Encyclopedia Vol.1 1999
Input: Markus Manhart, 1997-09-30
Last update: A.Buchanan, 2023-07-09 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/8/5K1N/6P1/5k1B
Reprints: 1683 Ideal-Mate Encyclopedia Vol.1 1999
Input: Markus Manhart, 1997-09-30
Last update: A.Buchanan, 2023-07-09 more...
1. Sf7 Txh6 2. Lxg7 Tf6 3. Lh6 Ta6#
Cook: NL
1. Lf7 g8=T 2. Ka2 Tb8 3. La1 Ta6#
1. Lf7 g8=T 2. Ka2 Tb6 3. La1 Ta8#
Cook: NL
1. Lf7 g8=T 2. Ka2 Tb8 3. La1 Ta6#
1. Lf7 g8=T 2. Ka2 Tb6 3. La1 Ta8#
Verstellung TL
dritter autor?
Adrian Storisteanu: Possible fix (the four pawns attack): +bPa7b5d5g4 (4+14). (2015-11-26)
Yuri Bilokin: Correction: -bPc5, +bRa3, bQb1-a2, bNc1-a4, bPd3-g3
6bB/4K1Pr/5R1p/4n3/n7/r5p1/qb6/k7 (4+10)
1.Sf7 Rxh6 2.Bxg7 Rf6 3.Bh6 Rf1# (MM) (2020-11-26)
comment
dritter autor?
Adrian Storisteanu: Possible fix (the four pawns attack): +bPa7b5d5g4 (4+14). (2015-11-26)
Yuri Bilokin: Correction: -bPc5, +bRa3, bQb1-a2, bNc1-a4, bPd3-g3
6bB/4K1Pr/5R1p/4n3/n7/r5p1/qb6/k7 (4+10)
1.Sf7 Rxh6 2.Bxg7 Rf6 3.Bh6 Rf1# (MM) (2020-11-26)
comment
Keywords: Line closure
Genre: h#
FEN: 6bB/4K1Pr/5R1p/2p1n3/8/3p4/1b6/kqn5
Input: Andreas Mokosch, 1997-07-23
Last update: Alfred Pfeiffer, 2015-11-26 more...
Genre: h#
FEN: 6bB/4K1Pr/5R1p/2p1n3/8/3p4/1b6/kqn5
Input: Andreas Mokosch, 1997-07-23
Last update: Alfred Pfeiffer, 2015-11-26 more...
1. Ke4 Kb2 2. Db5+ Kc2 3. Kd5 e4+ 4. Kc4 d3#
Keywords: Symmetrical position
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/3P4/1KPqPk2/3P4/8
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/3P4/1KPqPk2/3P4/8
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...
1) 1. Ke5 Kd3 2. Ld6 Tf5#
2) 1. Ke3 Tf2 2. Lf4 Te2#
3) 1. Lf4 Tf6 2. Ke5 Te6#
2) 1. Ke3 Tf2 2. Lf4 Te2#
3) 1. Lf4 Tf6 2. Ke5 Te6#
Keywords: Echo
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
FEN: 1b3R2/8/8/8/2KNk3/8/8/8
Input: Markus Manhart, 1998-02-16
Last update: hpr, 1999-11-04 more...
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
FEN: 1b3R2/8/8/8/2KNk3/8/8/8
Input: Markus Manhart, 1998-02-16
Last update: hpr, 1999-11-04 more...
1) 1. d1=S f4 2. Se3 Sd6#
2) 1. d1=T Lg4 2. Td4 Sc5#
3) 1. d1=L Lh5 2. Lf3 Lg6#
2) 1. d1=T Lg4 2. Td4 Sc5#
3) 1. d1=L Lh5 2. Lf3 Lg6#
A.Buchanan: This is a very nice composition. Note also how d1=D could not work. (2021-05-03)
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Keywords: Ideal mate (3), Promotion (T,L,S)
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
FEN: 8/5N2/2K5/8/4k3/1N4P1/3pBP2/8
Reprints: 4866 Ideal-Mate Encyclopedia Vol.2 2000
Input: Ralf Krätschmer, 1998-02-16
Last update: A.Buchanan, 2021-05-03 more...
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
FEN: 8/5N2/2K5/8/4k3/1N4P1/3pBP2/8
Reprints: 4866 Ideal-Mate Encyclopedia Vol.2 2000
Input: Ralf Krätschmer, 1998-02-16
Last update: A.Buchanan, 2021-05-03 more...
*) 1. ... Kd7 2. Sd4 b4#
1) 1. Sb4 Td2 2. Lc6 d4#
NL:
1. Se3 fxe3 2. Lc6 b4#
1) 1. Sb4 Td2 2. Lc6 d4#
NL:
1. Se3 fxe3 2. Lc6 b4#
Yuri Bilokin: correction a1=a2, then wRh6-g6, wPf3-f2, wPh5-g5, bPf7-d7, +bPf3 8/1p1pK1p1/1pkn1nR1/4b1P1/1P1P1p2/1R3p2/5P2/8 (7+10) h#2*
1...Kd8 2.Sd5 b5#
1.Sb5 Rd3 2.Bc7 d5# (2022-12-16)
comment
1...Kd8 2.Sd5 b5#
1.Sb5 Rd3 2.Bc7 d5# (2022-12-16)
comment
Keywords: Fesselungsspiel (212 202 000)
Genre: h#
FEN: 8/8/1p2Kpp1/1pkn1n1R/4b2P/1P1P1p2/1R3P2/8
Input: Markus Manhart, 1998-04-17
Last update: hpr, 1999-11-09 more...
Genre: h#
FEN: 8/8/1p2Kpp1/1pkn1n1R/4b2P/1P1P1p2/1R3P2/8
Input: Markus Manhart, 1998-04-17
Last update: hpr, 1999-11-09 more...
s) 1. Lf5 Kf2 2. Kf4 Lf3 3. Le5 Le3#
w) 1. ... Lf3 Kf6 2. Kf4 Lf5 3. Le3 Le5#
w) 1. ... Lf3 Kf6 2. Kf4 Lf5 3. Le3 Le5#
Totalsymmetrie, Idealmatts
A.Buchanan: What's a polar echo? (2022-03-08)
Henrik Juel: Good question
It must refer to the two mate positions:
The bishops stand on e3,f3 and e5,f5; with the kings on f2 and f4, Black is mate, and with kings on f4 and f6, White is mate
In non-duplex problems echo/chameleon echo mates are pretty well defined (black king on same/different square color)
So polar echo is just a third type, maybe only occurring in duplex problems (2022-03-08)
A.Buchanan: Thank you, Henrik. A non-duplex mechanism for Polar Echo is shown by P1305339 & P1305340. (2022-03-08)
comment
A.Buchanan: What's a polar echo? (2022-03-08)
Henrik Juel: Good question
It must refer to the two mate positions:
The bishops stand on e3,f3 and e5,f5; with the kings on f2 and f4, Black is mate, and with kings on f4 and f6, White is mate
In non-duplex problems echo/chameleon echo mates are pretty well defined (black king on same/different square color)
So polar echo is just a third type, maybe only occurring in duplex problems (2022-03-08)
A.Buchanan: Thank you, Henrik. A non-duplex mechanism for Polar Echo is shown by P1305339 & P1305340. (2022-03-08)
comment
Keywords: Polar Echo, Aristocrat, Miniature
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/B6b/8/4k3/8/4K3/8/b6B
Reprints: 1823 Ideal-Mate Encyclopedia Vol.1 1999
Input: Ronald Schäfer, 1998-07-01
Last update: A.Buchanan, 2022-03-08 more...
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/B6b/8/4k3/8/4K3/8/b6B
Reprints: 1823 Ideal-Mate Encyclopedia Vol.1 1999
Input: Ronald Schäfer, 1998-07-01
Last update: A.Buchanan, 2022-03-08 more...
1. ... Lb1 2. Kd5 La2 3. Ke4 Lf7 4. Kf3 Lxg6 5. Kg2 Lxf5 6. Kh1 Lh3 7. f5 Kb6 8. f4 Kc5 9. f3 Kd4 10. f2 Ke3 11. f1=S Kf2 12. Sh2 Lg2#
Genre: h#
FEN: 8/K7/2k2pr1/5r2/8/8/B7/8
Reprints: 1179 Ideal-Mate Encyclopedia Vol.1 1999
Input: Markus Manhart, 1999-02-26
Last update: TLi, 2014-09-27 more...
a) 1. b1=G Ka5 2. Gb5 Sd5 3. Gb8 Sb6#
b) 1. Ga1 Kb6 2. Ga5 Gb5 3. Ga3 b3#
b) 1. Ga1 Kb6 2. Ga5 Gb5 3. Ga3 b3#
Pieces:
= Grasshopper (G)
Genre: Fairies
FEN: 8/k*2q6/8/8/KN1*2Q4/8/1p6/8
Input: Torsten Linss, 1999-03-02
Last update: hpr, 1999-12-11 more...
* 1. ... e7 2. Kf5 e8=L 3. Ke4 Lg6#
* 1. ... e7 2. Kd3 e8=L 3. Ke4 Lg6#
1. e2 e7 2. e1=T e8=L 3. Te3 Lg6#
* 1. ... e7 2. Kd3 e8=L 3. Ke4 Lg6#
1. e2 e7 2. e1=T e8=L 3. Te3 Lg6#
SCHRECKE: Die Inkorrektheit besteht darin, dass im Satz 2. Kf5 und 2. Kd3 geht. (2022-10-23)
HBae: Mögliche Korrektur wSd3 statt wLg3, C+ Popeye v4.37 (2022-10-23)
more ...
comment
HBae: Mögliche Korrektur wSd3 statt wLg3, C+ Popeye v4.37 (2022-10-23)
more ...
comment
Keywords: under-promotion (sT, wL), Miniature
Genre: h#
Computer test: (Popeye WINDOWS98-32Bit-Version 3.75 (2048 KB))
FEN: 8/8/4P3/2K5/4k3/4ppB1/8/8
Input: Hans-Jürgen Schäfer, 1999-02-22
Last update: Dieter Berlin, 2022-10-23 more...
Genre: h#
Computer test: (Popeye WINDOWS98-32Bit-Version 3.75 (2048 KB))
FEN: 8/8/4P3/2K5/4k3/4ppB1/8/8
Input: Hans-Jürgen Schäfer, 1999-02-22
Last update: Dieter Berlin, 2022-10-23 more...
29 - P0570721
Edgar D. Holladay
7655 Ideal-Mate Review 61 01-03/1996
Ehrende Erwähnung
(2+2) C+
s=5
Längstzüger
Duplex
b) Verschiebung a1 nach c1
Edgar D. Holladay
7655 Ideal-Mate Review 61 01-03/1996
Ehrende Erwähnung
(2+2) C+
s=5
Längstzüger
Duplex
b) Verschiebung a1 nach c1
a) 1. Kc2 Dg1 2. Kb3 Da7 3. De5+ Kc6 4. Dc3+ Dc5 5. Ka4 Dxc3=
a) 1. ... Kc6 Dh8 2. Kb5 Da1 3. De3+ Kc2 4. Dc5+ Dc3 5. Ka4 Dxc5=
b) 1. Dd3+ Ke6 2. Kg4 Da1 3. Dd6+ Kf7 4. Df4+ Df6 5. Kh5 Dxf4=
b) 1. ... Dd5+ Ke2 2. Kg4 Da7 3. Dd2+ Kf1 4. Df4+ Df2 5. Kh3 Dxf4=
a) 1. ... Kc6 Dh8 2. Kb5 Da1 3. De3+ Kc2 4. Dc5+ Dc3 5. Ka4 Dxc5=
b) 1. Dd3+ Ke6 2. Kg4 Da1 3. Dd6+ Kf7 4. Df4+ Df6 5. Kh5 Dxf4=
b) 1. ... Dd5+ Ke2 2. Kg4 Da7 3. Dd2+ Kf1 4. Df4+ Df2 5. Kh3 Dxf4=
Keywords: Aristocrat, Minimal, Miniature, Maximummer
Genre: Fairies
Computer test: Alybadix
FEN: 8/8/8/2qk4/8/2QK4/8/8
Input: Torsten Linss, 1999-04-07
Last update: Alfred Pfeiffer, 2022-01-31 more...
Genre: Fairies
Computer test: Alybadix
FEN: 8/8/8/2qk4/8/2QK4/8/8
Input: Torsten Linss, 1999-04-07
Last update: Alfred Pfeiffer, 2022-01-31 more...
1. f1=S 2. Sxh2 3. Sg4 4. h2 5. h1=T 6. Th5 7. Tg5 8. h5 9. h4 10. h3 11. h2 12. h1=T 13. Th6 14. Thg6 15. h5 16. h4 17. h3 18. h2 19. h1=T 20. Th8 21. Tb8 22. Txb7 23. Kb8 24. Kc8 25. Kd8 26. Ke7 27. Kf6 28. Kxf5 29. Df6 30. c3 31. c2 32. c1=L 33. Lxb2 34. Le5 35. b2 36. b1=L 37. La2 38. Le6 39. dxc5 40. c4 41. c3 42. c2 43. c1=L 44. Lcf4 e4#
Erich Bartel: Nachdruck:
1) Umwandlungsrekorde I 1985.---:w (2008-01-27)
Anton Baumann: C+ Gustav 4.2a (2023-09-16)
Vaclav Kotesovec: Anton, this is an incredible result. Was your test "brute force" ? Can you also add an elapsed time ? (2023-09-16)
Vaclav Kotesovec: 4 hours later... Since I couldn't believe this fantastic result at first, I tested the problem myself and Gustav tested it in less than 4 hours. Thank you Olaf for the great improvement! (2023-09-16)
comment
1) Umwandlungsrekorde I 1985.---:w (2008-01-27)
Anton Baumann: C+ Gustav 4.2a (2023-09-16)
Vaclav Kotesovec: Anton, this is an incredible result. Was your test "brute force" ? Can you also add an elapsed time ? (2023-09-16)
Vaclav Kotesovec: 4 hours later... Since I couldn't believe this fantastic result at first, I tested the problem myself and Gustav tested it in less than 4 hours. Thank you Olaf for the great improvement! (2023-09-16)
comment
Keywords: Seriesmover
Genre: Fairies
Computer test: Anton Baumann: Gustav 4.2a, V. Kotesovec: Gustav 4.2e (Lösezeit: 03 : 55 : 44,97 h, Hashtables: 100000 MB)
FEN: b7/kNp4p/2Kp3p/1PP2P2/2p5/PpqP3p/1P2Pp1P/8
Reprints: 632 FIDE Album 1977-1979 , p. 126,
Input: Felber, Volker, 1999-12-27
Last update: Vaclav Kotesovec, 2023-09-16 more...
Genre: Fairies
Computer test: Anton Baumann: Gustav 4.2a, V. Kotesovec: Gustav 4.2e (Lösezeit: 03 : 55 : 44,97 h, Hashtables: 100000 MB)
FEN: b7/kNp4p/2Kp3p/1PP2P2/2p5/PpqP3p/1P2Pp1P/8
Reprints: 632 FIDE Album 1977-1979 , p. 126,
Input: Felber, Volker, 1999-12-27
Last update: Vaclav Kotesovec, 2023-09-16 more...
1) 1. Tb6 Kg8 2. Dc3 Kf7 3. Tb4 Ke6 4. Kc4 Dd5#
2) 1. Tg3 Dg5 2. Dc4 Kg7 3. Kd4 Kf6 4. Td3 De5#
2) 1. Tg3 Dg5 2. Dc4 Kg7 3. Kd4 Kf6 4. Td3 De5#
Materiallängenrekord
Yuri Bilokin: A black rook on square c7 is enough 7K/2r5/6r1/4Q3/8/3k4/8/8 (2+3) h#4 2.1…
1.Rb6 Kg8 2.Rc3 Kf7 3.Rb4 Ke6 4.Kc4 Qd5# (IM)
1.Rg3 Qg5 2.Rc4 Kg7 3.Kd4 Kf6 4.Rd3 Qe5# (IM)
Echo mates (shifted, 1, 0)
Indian (bicolor, incomplete)
Switchback (wQ, captureless, 1)
Ideal mate
Echo. Chameleon (2024-02-09)
comment
Yuri Bilokin: A black rook on square c7 is enough 7K/2r5/6r1/4Q3/8/3k4/8/8 (2+3) h#4 2.1…
1.Rb6 Kg8 2.Rc3 Kf7 3.Rb4 Ke6 4.Kc4 Qd5# (IM)
1.Rg3 Qg5 2.Rc4 Kg7 3.Kd4 Kf6 4.Rd3 Qe5# (IM)
Echo mates (shifted, 1, 0)
Indian (bicolor, incomplete)
Switchback (wQ, captureless, 1)
Ideal mate
Echo. Chameleon (2024-02-09)
comment
Keywords: Aristocrat
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 7K/2q5/6r1/4Q3/8/3k4/8/8
Reprints: 4140 Ideal-Mate Encyclopedia Vol.2 2000
Input: hpr, 2000-12-27
Last update: Erich Bartel, 2010-09-07 more...
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 7K/2q5/6r1/4Q3/8/3k4/8/8
Reprints: 4140 Ideal-Mate Encyclopedia Vol.2 2000
Input: hpr, 2000-12-27
Last update: Erich Bartel, 2010-09-07 more...
32 - P0578854
Mikael Grönroos
Ilkka J. Saren
(A) Suomen Tehtäväniekat , p. 23, 30/05/1997
(3+4) C+
h#11
0.1...
Mikael Grönroos
Ilkka J. Saren
(A) Suomen Tehtäväniekat , p. 23, 30/05/1997
(3+4) C+
h#11
0.1...
1. ... Kc7 2. Kf7 Kd7 3. Kg8 Ke6 4. d5 Kf5 5. d4 Kxg4 6. d3 Kf5 7. d2 g4 8. d1=L g5 9. Lh5 g4 10. Kh7 g6+ 11. Kh6 g5#
Yuri Bilokin: you can see
1.Kf7 Kd5 2.Kg8 Ke4 3.d5+ Kf4 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd5 2.Kg8 Ke4 3.d5+ Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd5 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd7 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
version wKc6-c8 2K5/6p1/3pk3/8/6p1/6P1/6P1/8 h#10
1.Kf7 Kd7 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5# (IM)
Ambush (bB). Annihilation. AntiZielElement (W6, line obstruction)
Promotion (b). Switchback (wK, with captures, 1)
Ideal mate (2023-06-14)
comment
1.Kf7 Kd5 2.Kg8 Ke4 3.d5+ Kf4 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd5 2.Kg8 Ke4 3.d5+ Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd5 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
1.Kf7 Kd7 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5#
version wKc6-c8 2K5/6p1/3pk3/8/6p1/6P1/6P1/8 h#10
1.Kf7 Kd7 2.Kg8 Ke6 3.d5 Kf5 4.d4 Kxg4 5.d3 Kf5 6.d2 g4 7.d1=B g5 8.Bh5 g4 9.Kh7 g6+ 10.Kh6 g5# (IM)
Ambush (bB). Annihilation. AntiZielElement (W6, line obstruction)
Promotion (b). Switchback (wK, with captures, 1)
Ideal mate (2023-06-14)
comment
Genre: h#
Computer test: Popeye Windows-32Bit v4.51 (100000 KB)
FEN: 8/6p1/2Kpk3/8/6p1/6P1/6P1/8
Reprints: 250 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 2000-12-30
Last update: hpr, 2010-03-06 more...
33 - P0578872
Unto Heinonen
1240 Suomen Tehtäväniekat , p. 30, 30/05/1997
Jan Hannelius zum 80. Geburtstag gewidmet
(2+7) C+
h#7
Unto Heinonen
1240 Suomen Tehtäväniekat , p. 30, 30/05/1997
Jan Hannelius zum 80. Geburtstag gewidmet
(2+7) C+
h#7
1. Sc4+ Ka4 2. Dc6+ Kxb3 3. Sd6+ Ka3 4. c4 Kb4 5. Ld5 Ka5 6. Kc5 b3 7. Td4 b4#
Yuri Bilokin: you can see *) 1... ... 2.Sc4+ Ka4 3.Qc6+ Kxb3 4.Sd6+ Ka3 5.c4 Kb4 6.Bd5 Ka5 7.Kc5 b3 8.Rd4 b4# (IM (2022-07-03)
comment
comment
Keywords: Checking key, Ideal mate, Minimal (B), Entblockung, Tempo Loss, Remote selfblock, Selfblock, Pawn mate, Round Trip (K-5), Liniensperrung, Check Protection, Discovered check
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 8/5b2/1n4q1/K1p5/3kr3/1p6/1P6/8
Reprints: 179 Ideal-Mate Encyclopedia Vol.1 1999
zu 18347 Die Schwalbe 308, p. 109, 04/2021
Input: hpr, 2000-12-30
Last update: Gunter Jordan, 2021-05-12 more...
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 8/5b2/1n4q1/K1p5/3kr3/1p6/1P6/8
Reprints: 179 Ideal-Mate Encyclopedia Vol.1 1999
zu 18347 Die Schwalbe 308, p. 109, 04/2021
Input: hpr, 2000-12-30
Last update: Gunter Jordan, 2021-05-12 more...
1. a5 Kh1 2. a4 Kg1 3. a3 Kh1 4. a2 Kg1 5. a1=D Kh1 6. Da8 Kg1 7. Df3 gxf3 8. g4 Lh3 9. Kxe2 f4 10. Kf3 Kf1 11. exf4 Lg2#
klären: in IME 1 ist Co-Autor J.Saukkola angegeben, ist das korrekt?
Anton Baumann: C+ Gustav 4.1d (2021-01-30)
comment
Anton Baumann: C+ Gustav 4.1d (2021-01-30)
comment
Genre: h#
FEN: 8/p7/8/4p1p1/8/4p1p1/3kP1P1/5BK1
Reprints: 1506 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 2000-12-30
Last update: hpr, 2010-05-01 more...
35 - P0581001
Artur T. Garzer
7349 Ideal-Mate Review 09-10/1995
György Bakcsi gewidmet
Preis
(2+8)
h#3
b) sGa6, sGb6
Artur T. Garzer
7349 Ideal-Mate Review 09-10/1995
György Bakcsi gewidmet
Preis
(2+8)
h#3
b) sGa6, sGb6
a) 1. Sc4 Kb1 2. Tb6 Kc2 3. Tb5 bxc3#
b) 1. Gb3 Ka1 2. Gb5 Ka2 3. Gc4 axb3#
b) 1. Gb3 Ka1 2. Gb5 Ka2 3. Gc4 axb3#
Pieces:
= Grasshopper (G)
Genre: Fairies, h#
FEN: 8/8/rn6/p1p5/pk6/p1p5/KP6/8
Input: hpr, 2001-02-14
Last update: hpr, 2001-02-14 more...
1. Le8 d4 2. Kf7 d5 3. Lf8 d6 4. Df6 d7 5. Se7 d8=S#
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 3q4/4k2K/2n5/2b4b/8/8/3P4/8
Input: hpr, 2001-03-03
Last update: hpr, 2001-03-03 more...
1. Kf5 Kf3 2. De5 Kg2 3. T1d4 Kf1 4. Ke4 Ke2 5. Lf5 f3#
Gunter Jordan: Der sLf4 kann durch einen sB ersetzt werden bei gleicher Lösung. C+ (2021-01-07)
comment
comment
Keywords: Minimal (B), Rücknahme Schlüsselzug, Switchback (k), Round Trip (K-4), Ideal mate, Selfblock, Pawn mate
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 8/7b/8/3r4/4kb2/8/4KP2/q2r4
Reprints: 151 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 2001-03-03
Last update: Gunter Jordan, 2021-01-07 more...
Genre: h#
Computer test: (Popeye WIN32-Version 3.64 (2048 KB))
FEN: 8/7b/8/3r4/4kb2/8/4KP2/q2r4
Reprints: 151 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 2001-03-03
Last update: Gunter Jordan, 2021-01-07 more...
38 - P0582508
György Bakcsi
Laszlo Zoltan
10315 Ideal-Mate Review 10-12/1999
Preis
(2+6) C+
h=5
b) sKb2 nach g7
György Bakcsi
Laszlo Zoltan
10315 Ideal-Mate Review 10-12/1999
Preis
(2+6) C+
h=5
b) sKb2 nach g7
a) 1. Te6+ Kxe6 2. Dg3 Kxf5 3. Le4+ Kxe4 4. Ka3 Kxd4 5. Dc3+ Kxc3=
b) 1. Ld5 Kxd5 2. Dh6 Kxd4 3. Te5 Kxe5 4. Kh8 Kxf5 5. Dg6+ Kxg6=
b) 1. Ld5 Kxd5 2. Dh6 Kxd4 3. Te5 Kxe5 4. Kh8 Kxf5 5. Dg6+ Kxg6=
Genre: Fairies
Computer test: Gustav 4.1d
FEN: b7/8/3K4/5p2/3b3q/1B6/1k6/4r3
Input: hpr, 2001-03-21
Last update: Gerd Wilts, 2020-12-26 more...
1) 1. ... Th6+ 2. Kg1 Kb6 3. g5 Kc5 4. g4 Kd4 5. g3 Kxe3 6. g2 Ke2=
2) 1. ... Th6+ 2. gxh6 Kb6 3. h5 Kc5 4. h4 Kd4 5. h3 Kxe3 6. h2 Kf2=
2) 1. ... Th6+ 2. gxh6 Kb6 3. h5 Kc5 4. h4 Kd4 5. h3 Kxe3 6. h2 Kf2=
Genre: Fairies
Computer test: Anton Baumann: C+ Gustav 4.1d (2020-12-07)
FEN: 8/K5p1/1R6/8/8/4n3/8/7k
Input: hpr, 2001-03-21
Last update: Erich Bartel, 2020-12-08 more...
a) 1. Dc7+ Kxc7 2. Td6 Kxd6 3. Kg5 Kxe5 4. Kh4 Kf4 5. Lh3 g3#
b) 1. Dc7+ Kxc7 2. Td6 Kxd6 3. Le6 Kxe6 4. Kg5 Kxe5 5. Kh4 Kf4=
b) 1. Dc7+ Kxc7 2. Td6 Kxd6 3. Le6 Kxe6 4. Kg5 Kxe5 5. Kh4 Kf4=
Genre: Fairies, h#
FEN: 1K6/3q4/7k/3rp2p/6b1/8/6P1/8
Input: hpr, 2001-03-21
Last update: hpr, 2001-03-21 more...
*) 1. ... Kf4 2. Kc5 Se4+ 3. Kd4 e3#
1) 1. Kc5 e3 2. Td6 Se6+ 3. Kd5 e4#
1) 1. Kc5 e3 2. Td6 Se6+ 3. Kd5 e4#
Jean Marc Loustau: Published in 1992; HM and MC had sent a very close setting to E. Albert; I had sent before (not a lot of time... may be some days!) this one, which was better. E. Albert decided to publish under the 3 names; but in his recent "IM Encyclopedia" E. Albert himself decided to publish it under only my name... So it's not clear. (2003-05-08)
Achim Schöneberg: AS: The chess problem was published in "I-M R" No. 44, page 3, (04-06 / 1992), under No. 5186.
Authors: "J.M. Loustau & Caillaud & Menkis after A. Schöneberg". (2021-12-31)
comment
Achim Schöneberg: AS: The chess problem was published in "I-M R" No. 44, page 3, (04-06 / 1992), under No. 5186.
Authors: "J.M. Loustau & Caillaud & Menkis after A. Schöneberg". (2021-12-31)
comment
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.70 (2048 KB))
FEN: 8/8/3k4/3rNKN1/8/8/4P3/8
Reprints: 3675 Ideal-Mate Encyclopedia Vol.2 2000
Input: hpr, 2001-08-10
Last update: hpr, 2009-11-01 more...
42 - P1000273
Mario Velucchi
Matematika na shahmatnoy doske 1976
(0+0)
Stelle 4DD und 1 S so auf das Brett, dass alle nicht besetzten Felder gedeckt sind!
Mario Velucchi
Matematika na shahmatnoy doske 1976
(0+0)
Stelle 4DD und 1 S so auf das Brett, dass alle nicht besetzten Felder gedeckt sind!
a) 8 symmetries
Keywords: Construction task, Aristocrat, Miniature
Genre: Mathematics
FEN: 8/8/8/8/8/8/8/8
Reprints: 10806 Die Schwalbe 183 06/2000
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-06-03 more...
Genre: Mathematics
FEN: 8/8/8/8/8/8/8/8
Reprints: 10806 Die Schwalbe 183 06/2000
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-06-03 more...
43 - P1002924
Jean-Marc Loustau
10900 Ideal-Mate Review 07-09/2000
Preis
PR Eugene Albert
(2+7) C+
h#7
0.1.1...
Jean-Marc Loustau
10900 Ideal-Mate Review 07-09/2000
Preis
PR Eugene Albert
(2+7) C+
h#7
0.1.1...
1. ... Kd2 2. Se6 Kd3 3. Tcd4+ Kxc3 4. Lc4 Kb2 5. Td5+ Kc1 6. Kd4 Kd2 7. Sc5 c3#
Yuri Bilokin: you can see *) 1... ... 2.Se6 Kd2 3.Rcd4+ Kxc3 4.Bc4 Kb2 5.Rd5+ Kc1 6.Kd4 Kd2 7.Sc5 c3# (IM) (2022-07-03)
comment
comment
Keywords: Minimal (b), Pawn mate, Switchback (K), Rücknahme Schlüsselzug, Round Trip (K-5), Selfblock, Ideal mate, interchange in mating position (ktls)
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.73 (2048 KB))
FEN: 8/8/8/2kbb3/2rnr3/2nK4/2P5/8
Input: hpr, 2002-03-02
Last update: Gunter Jordan, 2024-03-18 more...
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.73 (2048 KB))
FEN: 8/8/8/2kbb3/2rnr3/2nK4/2P5/8
Input: hpr, 2002-03-02
Last update: Gunter Jordan, 2024-03-18 more...
1) 1. Kc4 Se5+ 2. Kc5 Le7#
2) 1. Lc5 La5+ 2. Kc4 Sd2#
2) 1. Lc5 La5+ 2. Kc4 Sd2#
Genre: h#
Computer test: (Popeye WINDOWS98-32Bit-Version 3.75 (2048 KB))
FEN: 3B4/8/1b6/1p6/1k2K3/5N2/8/8
Input: hpr, 2003-01-25
Last update: hpr, 2003-01-25 more...
1. Db7 Ke8 2. Dg7 Kd8 3. a6 Kc8 4. a7 Kd8 5. Kf3 Kc8,Ke8 6. Ke4 Kd8 7. Kd5 Kc8,Ke8 8. Kc6 Kd8 9. Kb7 Ke8 10. Ka8 Kd8 11. Df7 Kc8 12. Dc7+ Kxc7=
Genre: Fairies
FEN: 3k4/8/8/PQ6/8/8/6K1/8
Reprints: 3188 Ideal-Mate Review 01-03/1989
Input: Hans Gruber, 2004-05-01
Last update: Alfred Pfeiffer, 2015-06-01 more...
46 - P1013696
Hilmar Ebert
Hans Gruber
682 Ideal-Mate Review 07-08/1984
(1+1)
a) ser-H#4 b) ser-H#5 genau
Hilmar Ebert
Hans Gruber
682 Ideal-Mate Review 07-08/1984
(1+1)
a) ser-H#4 b) ser-H#5 genau
a) 1. kBb1=kS 2. kSa3 3. kSc2 4. kSa1 kPd4#
b) 1. kBb1=kS 2. kSc3 3. kSa4 4. kSb6 5. kSa8 kPd5#
b) 1. kBb1=kS 2. kSc3 3. kSa4 4. kSb6 5. kSa8 kPd5#
47 - P1014081
Aleksandr Grin
757 Ideal-Mate Review 09-10/1984
Ehrende Erwähnung
(6+2)
s#6
Zwei Lösungen
Aleksandr Grin
757 Ideal-Mate Review 09-10/1984
Ehrende Erwähnung
(6+2)
s#6
Zwei Lösungen
1. Sf6 gxf6 2. Sh3 (Se4?) f5 3. Te2 f4 4. Le1 f3 5. Sf2+ Kh2 6. Tg2+ fxg2#
1. Sh6 gxh6 2. Se4 (Sh3?) h5 3. Te2 h4 4. Le1 h3 5. Sf2+ Kh2 6. Tg2+ hxg2#
1. Sh6 gxh6 2. Se4 (Sh3?) h5 3. Te2 h4 4. Le1 h3 5. Sf2+ Kh2 6. Tg2+ hxg2#
1. Lg5 Ka2 2. Tf2 Kb1 3. La4 Ka2 4. Le7 Kb1 5. Lb3 Kc1 6. La3 Kb1 7. Lb4 Kc1 8. Txb2 Lxb2#
Dual 5. La3 Ka2 6. Kb4 Kb1 7. Lb3 Kc1 8. Txb2 Lxb2#, 5. ... Kc1 6. Lb3 Kb1 usw.
Dual 5. La3 Ka2 6. Kb4 Kb1 7. Lb3 Kc1 8. Txb2 Lxb2#, 5. ... Kc1 6. Lb3 Kb1 usw.
Keywords: Ideal mate
Genre: s#
FEN: 5R2/8/2B2B2/8/2P5/2KP4/1p6/bk6
Input: Frank Müller, 2004-05-01
Last update: Olaf Jenkner, 2009-08-09 more...
Genre: s#
FEN: 5R2/8/2B2B2/8/2P5/2KP4/1p6/bk6
Input: Frank Müller, 2004-05-01
Last update: Olaf Jenkner, 2009-08-09 more...
a) 1. cxd8=T+ Ka8 2. Da6+ Txa6 3. Lc6+ Txc6#
b) 1. cxd8=L+ Ka8 2. Ta7+ Kxa7 3. Dc7+ Ka8 4. Lc6+ Txc6#
b) 1. cxd8=L+ Ka8 2. Ta7+ Kxa7 3. Dc7+ Ka8 4. Lc6+ Txc6#
* 1. ... b6! 2. Sd2 b5 3. Db1+ Ka3 4. Dc2 b4#
* 1. ... b5? 2. Dc2+ Ka3 3. Sd2 b4#
1. Sd2! b6! 2. Sb3 b5 3. Dc2+ Ka3 4. Sd2 b4#
1. ... b5? 2. Db1+ Ka3 3. Dc2+ b4#
* 1. ... b5? 2. Dc2+ Ka3 3. Sd2 b4#
1. Sd2! b6! 2. Sb3 b5 3. Dc2+ Ka3 4. Sd2 b4#
1. ... b5? 2. Db1+ Ka3 3. Dc2+ b4#
Keywords: Ideal mate
Genre: s#
FEN: 8/1p6/8/3p4/3P4/1NKP4/k7/2Q5
Input: Frank Müller, 2004-05-01
Last update: Marcin Banaszek, 2022-02-10 more...
Genre: s#
FEN: 8/1p6/8/3p4/3P4/1NKP4/k7/2Q5
Input: Frank Müller, 2004-05-01
Last update: Marcin Banaszek, 2022-02-10 more...
1. Le4+ Kh2 2. Ld3 Kh1 3. Tc1+ Kh2 4. Lf1 Kh1 5. La6+ Kh2 6. Kf1 Kh1 7. Lb7+ Kh2 8. Tc6 Kh1 9. Tc4+ Kh2 10. Te4 Kh1 11. Te1+ Kh2 12. Se4 Kh1 13. Shg3+ Kh2 14. Se2 Kh1 15. Sf2+ Kh2 16. Lg2+ hxg2#
Dual: 5. Lb5+ Kh2 6. Tc4 Kh1 7. Lc6+ Kh2 8. Te4 Kh1 9. Te3+,Te2+ Kh2 10. Se4 Kh1 11. Te1+ Kh2 12. Kf1 Kh1 usw.
Dual: 5. Lb5+ Kh2 6. Tc4 Kh1 7. Lc6+ Kh2 8. Te4 Kh1 9. Te3+,Te2+ Kh2 10. Se4 Kh1 11. Te1+ Kh2 12. Kf1 Kh1 usw.
Langzügige Miniatur
Cook
DL
Anton Baumann: NL: 1.Tc1+ Kh2 2.Tc3 Kh1 3.Le4+ Kh2 4.Tf3 Kh1 5.Te3+ Kh2 6.Ld3 Kh1 7.Te1+ Kh2 8.Lf1 Kh1 9.Lc4+,Lb5+ Kh2 10.Kf1 Kh1 11.Ld5+,Lc6+ Kh2 12.Se4 usw. (2023-12-18)
comment
Cook
DL
Anton Baumann: NL: 1.Tc1+ Kh2 2.Tc3 Kh1 3.Le4+ Kh2 4.Tf3 Kh1 5.Te3+ Kh2 6.Ld3 Kh1 7.Te1+ Kh2 8.Lf1 Kh1 9.Lc4+,Lb5+ Kh2 10.Kf1 Kh1 11.Ld5+,Lc6+ Kh2 12.Se4 usw. (2023-12-18)
comment
Keywords: Ideal mate, Langzügige Miniatur
Genre: s#
FEN: 2R5/8/3N4/7N/8/7p/5K2/1B5k
Input: Frank Müller, 2004-05-01
Last update: Olaf Jenkner, 2010-01-03 more...
Genre: s#
FEN: 2R5/8/3N4/7N/8/7p/5K2/1B5k
Input: Frank Müller, 2004-05-01
Last update: Olaf Jenkner, 2010-01-03 more...
52 - P1014114
Milos Tomasevic
Radovan Tomasevic
2467 Ideal-Mate Review 01-03/1988
nach A. Schurjakow
(2+4)
#10
Milos Tomasevic
Radovan Tomasevic
2467 Ideal-Mate Review 01-03/1988
nach A. Schurjakow
(2+4)
#10
1. Dg3 f2 2. Dxf2 g3 3. Dxg3 g4 4. Dxg4 Kh2 5. Kb7 Kh1 6. Kc6 Kh2 7. Kd5 Kh1 8. Ke4 Kh2 9. Kf3 Kh1 10. Dg2#
Symmetrische Mattstellung
Felber, Volker: Schurjakow = P1121547 (2018-12-18)
Anton Baumann: C+ Gustav 4.1d (2021-09-14)
comment
Felber, Volker: Schurjakow = P1121547 (2018-12-18)
Anton Baumann: C+ Gustav 4.1d (2021-09-14)
comment
Keywords: Ideal mate, Minimal, Symmetrical end position
Genre: n#
FEN: K7/8/8/6p1/6p1/5p2/5Q2/7k
Input: Frank Müller, 2004-05-01
Last update: Alfred Pfeiffer, 2016-12-20 more...
Genre: n#
FEN: K7/8/8/6p1/6p1/5p2/5Q2/7k
Input: Frank Müller, 2004-05-01
Last update: Alfred Pfeiffer, 2016-12-20 more...
1. T3d2+ d3 2. Sxd3+ Txd1 3. Sb4+ Td3 4. Lxd3 Dxd3 5. Txd1+ Dxd1 6. Db2+ Lxb2#
Keywords: Ideal mate
Genre: s#
FEN: 7b/3q4/8/3r4/3pB3/K1QR4/8/1kNR3r
Input: Frank Müller, 2004-05-01
Last update: Marcin Banaszek, 2020-12-09 more...
Genre: s#
FEN: 7b/3q4/8/3r4/3pB3/K1QR4/8/1kNR3r
Input: Frank Müller, 2004-05-01
Last update: Marcin Banaszek, 2020-12-09 more...
1. Txa7+ Dxa7 2. c8=D+ Db8 3. Da6+ Da7 4. Df7 Dxa6 5. Da7+ Dxa7 6. b7+ Dxb7#
Keywords: Ideal mate
Genre: s#
FEN: kq6/pRP5/1PKB4/2PQ4/8/8/8/8
Input: Frank Müller, 2004-05-01
Last update: James Malcom, 2021-02-19 more...
Genre: s#
FEN: kq6/pRP5/1PKB4/2PQ4/8/8/8/8
Input: Frank Müller, 2004-05-01
Last update: James Malcom, 2021-02-19 more...
1. a8=D+! Kh3! 2. Dc8+ Kg2 3. Dc2+ Kh3 4. Dff5+ Kh4 5. Dff2+ Kh3! 6. Dh7+ Kg4 7. Dd7+ Kg5,Kh5 8. Ddf5+ Kh6 9. D2f4+ Kg7 10. Dc7+ Kh6 11. Dfh7+ Kg5 12. Dg3+ Kf6 13. Df4+ Ke6 14. Dhf5+ Ke7 15. Dc7+ Ke8 16. Dcf7+ Kd8 17. Da5+ Kc8 18. Db7+ Dxb7#
10. ... Kg8 11. Dg3+ Kh8 12. Dge5+ Kg8 13. Dg6+ Kf8 14. Def5+ Ke7 15. Dgf6+ Ke8 16. Df7+ Kd8 17. Da5+ Kc8 18. Db7+ Dxb7#
3. ... Kg1 4. Dc5+ Kg2 5. Dcf2+ Kh3 6. Dh6+ Kg4 7. De6+ Kg5,Kh5 8. Def5+ Kh6 9. D2f4+ mit Übergang zur Hauptvariante
Ein Teil dieser Mattführung geht auf Untersuchungen von Hasselkus in den fünfziger Jahren zurück.
10. ... Kg8 11. Dg3+ Kh8 12. Dge5+ Kg8 13. Dg6+ Kf8 14. Def5+ Ke7 15. Dgf6+ Ke8 16. Df7+ Kd8 17. Da5+ Kc8 18. Db7+ Dxb7#
3. ... Kg1 4. Dc5+ Kg2 5. Dcf2+ Kh3 6. Dh6+ Kg4 7. De6+ Kg5,Kh5 8. Def5+ Kh6 9. D2f4+ mit Übergang zur Hauptvariante
Ein Teil dieser Mattführung geht auf Untersuchungen von Hasselkus in den fünfziger Jahren zurück.
Keywords: Ideal mate, Langzügige Miniatur, Minimal (d), Miniature
Genre: s#
Computer test: C+ Gustav 4.2a
FEN: 8/P7/K7/8/5Q2/8/6k1/7q
Reprints: 74 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Frank Müller, 2004-05-01
Last update: Gunter Jordan, 2023-01-27 more...
Genre: s#
Computer test: C+ Gustav 4.2a
FEN: 8/P7/K7/8/5Q2/8/6k1/7q
Reprints: 74 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Frank Müller, 2004-05-01
Last update: Gunter Jordan, 2023-01-27 more...
1. Kd3 Kb1 2. Kd2+ Ka2 3. Sd4 Ka1 4. Tb1+ Ka2 5. Td1 Kb2 6. Db8+ Ka2 7. Lb1+ Ka1 8. Lc2+ Ka2 9. Kc1 Ka1 10. Sb3+ Ka2 11. Sd2 Ka1 12. Db2+ axb2#
Keywords: Ideal mate, Minimal (b), Miniature
Genre: s#
Computer test: Gustav 4.1d
FEN: 7Q/7B/8/8/1R6/pN6/k1K5/8
Reprints: 1552 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Frank Müller, 2004-05-01
Last update: Gunter Jordan, 2023-01-27 more...
Genre: s#
Computer test: Gustav 4.1d
FEN: 7Q/7B/8/8/1R6/pN6/k1K5/8
Reprints: 1552 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Frank Müller, 2004-05-01
Last update: Gunter Jordan, 2023-01-27 more...
1. Sd2+ Kd3 2. Lb5+ Kc2 3. Ta2+ Kxd1 4. La4+ Kc1 5. Tc2+ Kd1 6. Tb2+ Kc1 7. Sb3+ Kd1 8. Tb1+ Kc2 9. Sb4+ Kxb1 10. Da1+ Lxa1 11. Lb2 Lxb2#
Keywords: Aristocrat, Ideal mate
Genre: s#
Computer test: Computerprüfung: C+ Gustav 4.1d in 2 Tagen 21 Std. 34 Min. Computerprüfung: C+ Gustav 4.1d in 2 Tagen 21 Std. 34 Min.
FEN: 4B2B/6b1/N7/4Q3/2k5/K7/8/R2R1N2
Input: Frank Müller, 2004-05-01
Last update: A.Buchanan, 2022-07-15 more...
Genre: s#
Computer test: Computerprüfung: C+ Gustav 4.1d in 2 Tagen 21 Std. 34 Min. Computerprüfung: C+ Gustav 4.1d in 2 Tagen 21 Std. 34 Min.
FEN: 4B2B/6b1/N7/4Q3/2k5/K7/8/R2R1N2
Input: Frank Müller, 2004-05-01
Last update: A.Buchanan, 2022-07-15 more...
* 1. ... Sb4,~ 2. Sc3#
1. ... Sc5,~ 2. Sd6#
1. Ld4! Sb4,~ 2. Sf6#
1. ... Sa5,~ 2. Sc5#
1. ... Sc5,~ 2. Sd6#
1. Ld4! Sb4,~ 2. Sf6#
1. ... Sa5,~ 2. Sc5#
Keywords: Brian Stephenson Collection (2811)
Genre: 2#
Computer test: SCHRECKE: popeye 4.85
FEN: 8/1n1N4/8/1N1nB1K1/4k3/4p3/4P3/8
Reprints: Mate in two moves 1931
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-09-14 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.85
FEN: 8/1n1N4/8/1N1nB1K1/4k3/4p3/4P3/8
Reprints: Mate in two moves 1931
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-09-14 more...
1. Dxf4! droht 2. Se3#
Keywords: Brian Stephenson Collection (2849), Capture key, Unpinning (Schlüssel)
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 2BNqr2/4r1n1/6p1/Rb1kn1Q1/2R2pp1/BP6/6N1/5K2
Reprints: Mate in two moves 1931
AJEC (Belgischer Fernschachbund) 05/1938
136 FIDE Album 1914-1944/I 1971
L The Problemist 25-3, p. 99, 05/2015
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-12-03 more...
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 2BNqr2/4r1n1/6p1/Rb1kn1Q1/2R2pp1/BP6/6N1/5K2
Reprints: Mate in two moves 1931
AJEC (Belgischer Fernschachbund) 05/1938
136 FIDE Album 1914-1944/I 1971
L The Problemist 25-3, p. 99, 05/2015
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-12-03 more...
1. Dd4! droht 2. Dxb2#
1. ... Sc4 2. Dc3#
1. ... b3 2. Sb5#
1. ... Ta5,Ta8 2. Dxb4#
1. ... Sc4 2. Dc3#
1. ... b3 2. Sb5#
1. ... Ta5,Ta8 2. Dxb4#
Keywords: Brian Stephenson Collection (2858), pin-mate, Line closing
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 1b3B2/2N2b2/3n4/2Q5/rp3K2/k2N4/1pP5/1B6
Reprints: Mate in two moves 1931
87 The American Two-move Chess Problem , p. 54, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-27 more...
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 1b3B2/2N2b2/3n4/2Q5/rp3K2/k2N4/1pP5/1B6
Reprints: Mate in two moves 1931
87 The American Two-move Chess Problem , p. 54, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-27 more...
1. Dh8! Se6 2. De5#
1. ... Sf6,Sh6 2. Df8#
1. ... Se7 2. Lxf4#
1. ... d4 2. Txd4#
1. ... f3 2. Dh2#
1. ... b5 2. Ta6#
1. ... Sf6,Sh6 2. Df8#
1. ... Se7 2. Lxf4#
1. ... d4 2. Txd4#
1. ... f3 2. Dh2#
1. ... b5 2. Ta6#
Keywords: Brian Stephenson Collection (3143), Zugzwang-Goal
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 1K1N2n1/3p2n1/1p1k4/3p2B1/R4p2/3N3Q/8/8
Reprints: Mate in two moves 1931
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-12-02 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 1K1N2n1/3p2n1/1p1k4/3p2B1/R4p2/3N3Q/8/8
Reprints: Mate in two moves 1931
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-12-02 more...
1. Lf8! droht 2. Da1#
1. ... Lxb2 2. Lxh6#
1. ... Kxb2 2. Da3#
1. ... Lxb2 2. Lxh6#
1. ... Kxb2 2. Da3#
Keywords: Brian Stephenson Collection (3173), Flight giving sacrifice key, Drag-in sacrifice, Blocknutzung, Line opening (Schlüssel)
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/1K4b1/2p4q/5B2/Q7/B7/1R2P3/2k1n3
Reprints: Simple Two-move Themes 1924
Mate in two moves 1931
58 The American Two-move Chess Problem , p. 47, 1965
2345 Chess Problems 1997
42 Encyclopedia of Chess Problems , p. 23, 2012
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-14 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/1K4b1/2p4q/5B2/Q7/B7/1R2P3/2k1n3
Reprints: Simple Two-move Themes 1924
Mate in two moves 1931
58 The American Two-move Chess Problem , p. 47, 1965
2345 Chess Problems 1997
42 Encyclopedia of Chess Problems , p. 23, 2012
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-14 more...
1. De1 Sb3 2. Ke2+ Ke4,Ke5 3. Kd1+ Se3#
1. ... Sb7 2. De3 ... 3. Lxg4+ Lxg4#
1. ... Da6 2. Td5+ cxd5 3. De4+ dxe4#
1. ... Dg8 2. De3 ... 3. Lxg4+ Lxg4#
Druckfehlerberichtigung in 02/1904, Seite 89.
1. ... Sb7 2. De3 ... 3. Lxg4+ Lxg4#
1. ... Da6 2. Td5+ cxd5 3. De4+ dxe4#
1. ... Dg8 2. De3 ... 3. Lxg4+ Lxg4#
Druckfehlerberichtigung in 02/1904, Seite 89.
Keywords: Brian Stephenson Collection (4080)
Genre: s#
FEN: q7/4B3/2pR2p1/n4kPb/6np/5K1B/5RP1/Q7
Reprints: 409 Schweizerische Schachzeitung , p. 165, 11/1904
Les Mille et un Mats Inverses 1907
S4 The Chess Amateur 11/1919
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2022-09-08 more...
Genre: s#
FEN: q7/4B3/2pR2p1/n4kPb/6np/5K1B/5RP1/Q7
Reprints: 409 Schweizerische Schachzeitung , p. 165, 11/1904
Les Mille et un Mats Inverses 1907
S4 The Chess Amateur 11/1919
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2022-09-08 more...
BS Problemid: 4082
Authors: Keeble, John F
Sources: Les Mille et un Mats Inverses 1907
Years: 1903
SCHRECKE: 1.Tb2!
1. ... L:b2 2.Ld4 ~ 3.Dg6+ h:g6#
1. ... T:b2 2.Lf2 ~ 3.Dg6+ h:g6#
1. ... Lg2 2.Lc7 ~ 3.Dg6+ h:g6#
1. ... f2 2.Dd3+ Le4 3.Df3+ L:f3#
1. ... a:b2 2.Lf7,La5 ...
8 Nebenlösungen: 1.Lg1, 1.Lf2, 1.Ld4, 1.Lc5, 1.La7, 1.La5, 1.Lc7, 1.Ld8
z.B.: 1.Ld8 Lf6 2.Te5+ L:e5 3.Dg6+ h:g6#
1. ... Tg2 2.Lc2+ T:c2 3.Dg6+ h:g6# (2021-07-07)
comment
1. ... L:b2 2.Ld4 ~ 3.Dg6+ h:g6#
1. ... T:b2 2.Lf2 ~ 3.Dg6+ h:g6#
1. ... Lg2 2.Lc7 ~ 3.Dg6+ h:g6#
1. ... f2 2.Dd3+ Le4 3.Df3+ L:f3#
1. ... a:b2 2.Lf7,La5 ...
8 Nebenlösungen: 1.Lg1, 1.Lf2, 1.Ld4, 1.Lc5, 1.La7, 1.La5, 1.Lc7, 1.Ld8
z.B.: 1.Ld8 Lf6 2.Te5+ L:e5 3.Dg6+ h:g6#
1. ... Tg2 2.Lc2+ T:c2 3.Dg6+ h:g6# (2021-07-07)
comment
Keywords: Brian Stephenson Collection (4082)
Genre: s#
FEN: 8/3N3p/QB5P/5k1K/7P/pB3p1N/r7/bR2R2b
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2015-01-14 more...
Genre: s#
FEN: 8/3N3p/QB5P/5k1K/7P/pB3p1N/r7/bR2R2b
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2015-01-14 more...
1. Sc7-e8!
1. ... Kc3xd4 2. Sg1-e2+ Kd4xe4 3. Da5-a8+ Tb4-b7#
1. ... e5xd4 2. Se8-c7 d4-d3 3. Da5-e5+ Tb4-d4#
1. ... Kc3xd4 2. Sg1-e2+ Kd4xe4 3. Da5-a8+ Tb4-b7#
1. ... e5xd4 2. Se8-c7 d4-d3 3. Da5-e5+ Tb4-d4#
SCHRECKE: C+, popeye 4.87
1.Se8! (Zugzwang)
1. ... K:d4 2.Se2+ K:e4 3.Da8+ Tb7#
1. ... e:d4 2.Sc7 d3 3.De5+ Td4# (2021-12-14)
comment
1.Se8! (Zugzwang)
1. ... K:d4 2.Se2+ K:e4 3.Da8+ Tb7#
1. ... e:d4 2.Sc7 d3 3.De5+ Td4# (2021-12-14)
comment
Keywords: Brian Stephenson Collection (4153)
Genre: s#
Computer test: Popeye 4.83
FEN: 8/2Np3p/3K3B/Q3p3/Pr1PP1PP/bBk5/1pP3p1/1R4N1
Reprints: S9 The Chess Amateur 02/1920
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-12-14 more...
Genre: s#
Computer test: Popeye 4.83
FEN: 8/2Np3p/3K3B/Q3p3/Pr1PP1PP/bBk5/1pP3p1/1R4N1
Reprints: S9 The Chess Amateur 02/1920
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-12-14 more...
1. Le8! Sf2,Sg3 2. De5+ fxe5 3. Se4+ Sxe4#
1. ... c6 2. Db7 Sg3,Sf2 3. Se4+ Sxe4#
2. ... cxb5 3. Dxh1 b4#
1. ... cxd6 2. Dh7 d5 3. Dxh1 d4#
2. ... Sg3,Sf2 3. Se4+ Sxe4#
1. ... c6 2. Db7 Sg3,Sf2 3. Se4+ Sxe4#
2. ... cxb5 3. Dxh1 b4#
1. ... cxd6 2. Dh7 d5 3. Dxh1 d4#
2. ... Sg3,Sf2 3. Se4+ Sxe4#
Keywords: Brian Stephenson Collection (4161)
Genre: s#
FEN: 1B3R2/2p1Q3/2BP1p2/PPk2P2/2p2N2/1pK5/1P1N4/7n
Reprints: 79 Changing Fashions 1925
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2022-09-08 more...
Genre: s#
FEN: 1B3R2/2p1Q3/2BP1p2/PPk2P2/2p2N2/1pK5/1P1N4/7n
Reprints: 79 Changing Fashions 1925
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2022-09-08 more...
1. Dh3! droht 2. Txf4+ Lxf4#
1. Dh3! Sc3 2. Tb4+ axb4 3. Sb5+ Sxb5#
1. Dh3! Lg1 2. De3+ Lxe3 3. Txf4+ Lxf4#
1. Dh3! Sd3,Se2 (bel) 2. Tf4+ Sxf4 3. Dd3+ Sxd3#
1. Dh3! Sc3 2. Tb4+ axb4 3. Sb5+ Sxb5#
1. Dh3! Lg1 2. De3+ Lxe3 3. Txf4+ Lxf4#
1. Dh3! Sd3,Se2 (bel) 2. Tf4+ Sxf4 3. Dd3+ Sxd3#
Keywords: Brian Stephenson Collection (4163)
Genre: s#
FEN: 7B/N2p2r1/1N1K2B1/p7/3k1nQp/1R6/n6b/5R2
Reprints: 82 Changing Fashions 1925
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2016-06-04 more...
Genre: s#
FEN: 7B/N2p2r1/1N1K2B1/p7/3k1nQp/1R6/n6b/5R2
Reprints: 82 Changing Fashions 1925
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2016-06-04 more...
1. Kc4! Ke4 2. De3#
1. ... Kf4 2. Kd5#
1. ... Ke6 2. Kd4#
1. ... Kf4 2. Kd5#
1. ... Ke6 2. Kd4#
Keywords: Brian Stephenson Collection (4935), Minimal (b), Anderssen-Verstellung (zweifach), Flight-giving key (zweifach)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/3pB3/3P4/4k3/1R4P1/1QK5/3P4/8
Reprints: 27 The American Two-move Chess Problem , p. 39, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-14 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/3pB3/3P4/4k3/1R4P1/1QK5/3P4/8
Reprints: 27 The American Two-move Chess Problem , p. 39, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-14 more...
1. Db5! droht 2. Dxe2#
1. ... Dxf4,Dxe3,De4,Dd5,Dxb5 2. Sg7#
1. ... Dg7 2. Sxg7#
1. ... Dxf5 2. Dxf5#
1. ... cxb5 2. Txh6#
1. ... Txb5 2. Lxf7#
1. ... f6 2. Dxe2#
1. ... Td5 2. Dxe2#
1. ... Dxf4,Dxe3,De4,Dd5,Dxb5 2. Sg7#
1. ... Dg7 2. Sxg7#
1. ... Dxf5 2. Dxf5#
1. ... cxb5 2. Txh6#
1. ... Txb5 2. Lxf7#
1. ... f6 2. Dxe2#
1. ... Td5 2. Dxe2#
Henrik Juel: double threat, also 2.Sg7#, and the semi-dual 1... c5 2.Txh6,Dxe2# (2024-02-28)
comment
comment
Keywords: Brian Stephenson Collection (5163), Sacrifice key, double-check mate
Genre: 2#
FEN: 3r1B2/1r3p2/R1p4p/4qN1k/3P1P1p/4P2p/B3p3/1Q2K1R1
Reprints: 37 The Amateur Chess Magazine 09/1872
2 100 Gems of Chess [Moore] 1873
194 Canadian Chess Problems , p. 196, 1890
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-28 more...
Genre: 2#
FEN: 3r1B2/1r3p2/R1p4p/4qN1k/3P1P1p/4P2p/B3p3/1Q2K1R1
Reprints: 37 The Amateur Chess Magazine 09/1872
2 100 Gems of Chess [Moore] 1873
194 Canadian Chess Problems , p. 196, 1890
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-28 more...
1. Tc6! Sxc3 2. Ld2#
1. ... Se3 2. Lxe3#
1. ... Sb4 2. cxb4#
1. ... Sf4 2. Lxf4#
1. ... Sb6 2. Tc5#
1. ... Sf6 2. Lxf6#
1. ... Sxc7 2. Ld8#
1. ... Se7 2. Lxe7#
1. ... Se3 2. Lxe3#
1. ... Sb4 2. cxb4#
1. ... Sf4 2. Lxf4#
1. ... Sb6 2. Tc5#
1. ... Sf6 2. Lxf6#
1. ... Sxc7 2. Ld8#
1. ... Se7 2. Lxe7#
Keywords: Brian Stephenson Collection (5227), Minimal (b), Zugzwang-Goal, discovered checkmate, pin-mate, Pawn mate, Blocknutzung
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/2N5/P6R/k2n2BR/8/K1P5/8/8
Reprints: 60 Chess Problems by C. F. Stubbs 1904
De Problemist 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-01 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/2N5/P6R/k2n2BR/8/K1P5/8/8
Reprints: 60 Chess Problems by C. F. Stubbs 1904
De Problemist 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-01 more...
BS Problemid: 5668
Authors: Gevers, Raymond
Sources: All Change Here! 1919
Years: 1919
SCHRECKE: C+, popeye 4.87
1. Tf6! (Zugzwang)
1. ... Th8,Th~ 2. Sxg5#
1. ... Ta1,Td~ 2. Sxd2#
1. ... Sb5,Sc~ 2. Te6#
1. ... Sg3,Sf2 2. Sf2#
1. ... fxe3 2. Sc5# (2023-07-23)
comment
1. Tf6! (Zugzwang)
1. ... Th8,Th~ 2. Sxg5#
1. ... Ta1,Td~ 2. Sxd2#
1. ... Sb5,Sc~ 2. Te6#
1. ... Sg3,Sf2 2. Sf2#
1. ... fxe3 2. Sc5# (2023-07-23)
comment
Keywords: Brian Stephenson Collection (5668)
Genre: 2#
FEN: 8/1Kn5/1BPR4/6pr/2P1kpP1/3NPN2/3pB3/3r3n
Input: Brian Stephenson, 2004-08-12
Last update: Roland Ott, 2023-07-23 more...
Genre: 2#
FEN: 8/1Kn5/1BPR4/6pr/2P1kpP1/3NPN2/3pB3/3r3n
Input: Brian Stephenson, 2004-08-12
Last update: Roland Ott, 2023-07-23 more...
1. e6! droht 2. Th5
1. ... De3,f3 2. Kb3
1. ... Th3,Th5 2. Dxf2+
1. ... Dxg1 2. Dxg1+
1. ... e3 2. Sa5
1. ... De3,f3 2. Kb3
1. ... Th3,Th5 2. Dxf2+
1. ... Dxg1 2. Dxg1+
1. ... e3 2. Sa5
Henrik Juel: double threat 1.e6 thr. 2.Dxf2+,Dxe2 (but not 2.Th5)
duals 1... e3 2.Sd6,Sa5 and 1... f3 2.Sc4,Sxe4,Kb3,Lxf2+,Dxf2+ (2022-07-24)
comment
duals 1... e3 2.Sd6,Sa5 and 1... f3 2.Sc4,Sxe4,Kb3,Lxf2+,Dxf2+ (2022-07-24)
comment
Keywords: Brian Stephenson Collection (5759), Valve
Genre: 3#
FEN: 8/7P/8/2NBPR2/1PNkpp2/P1p5/K3pq1r/4Q1B1
Reprints: 13 Valves and Bi-Valves , p. 25, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
Genre: 3#
FEN: 8/7P/8/2NBPR2/1PNkpp2/P1p5/K3pq1r/4Q1B1
Reprints: 13 Valves and Bi-Valves , p. 25, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
1. Sg4! Dd5 2. Dh6+
1. ... Ld5 2. Da2
1. ... Df3 2. Lxf3+
1. ... Dxg2 2. Dxg2+
Verführung: 1. Dh6? Le6! 2. Sd5 (g8) Sf5!
Lösung: 1. Sf6-g4 (dr.Sxe5) Dd5 (öffnet die Turmreihe, versperrt aber den Lb3) 2. Dh6+ Se6 3. Dxe6# 1. ... Ld5 (entfesselt die sD) 2. Da2 ~ 3. Da8 oder Sxe5# 1. ... Dxg2 (Df3) 2. Dxg2 (Lxf3)+ ~ 3. Se5 (Ld5)#
1. ... Ld5 2. Da2
1. ... Df3 2. Lxf3+
1. ... Dxg2 2. Dxg2+
Verführung: 1. Dh6? Le6! 2. Sd5 (g8) Sf5!
Lösung: 1. Sf6-g4 (dr.Sxe5) Dd5 (öffnet die Turmreihe, versperrt aber den Lb3) 2. Dh6+ Se6 3. Dxe6# 1. ... Ld5 (entfesselt die sD) 2. Da2 ~ 3. Da8 oder Sxe5# 1. ... Dxg2 (Df3) 2. Dxg2 (Lxf3)+ ~ 3. Se5 (Ld5)#
AZW: Georg Hume bevorzugte das Selbstmatt und bei direkten Problemen moderne Vorwürfe. Im obigen Bi-Valve-Problem wird ungewohnterweise eine gefesselte schwarze Figur zum Träger des Ideenspiels.
more ...
comment
more ...
comment
Keywords: Brian Stephenson Collection (5760), Bivalve
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 1K1R4/6n1/1pk2N2/1p2p3/1P1pq3/1b6/3Q2Bp/n3r2r
Reprints: 57 Valves and Bi-Valves , p. 69, 1930
392 Arbeiter-Zeitung (Wien) 22/01/1933
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 1K1R4/6n1/1pk2N2/1p2p3/1P1pq3/1b6/3Q2Bp/n3r2r
Reprints: 57 Valves and Bi-Valves , p. 69, 1930
392 Arbeiter-Zeitung (Wien) 22/01/1933
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
1. Kf8! droht 2. Tg8#
1. ... f6 2. Th6#
1. ... f5 2. S4f3#
1. ... f6 2. Th6#
1. ... f5 2. S4f3#
Keywords: Brian Stephenson Collection (8661), Valve (sB), Batteriematt vertikal
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 4K2k/3ppp2/4q1R1/6N1/7N/4r2R/8/8
Reprints: De Problemist 1928
102 Valves and Bi-Valves , p. 102, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 4K2k/3ppp2/4q1R1/6N1/7N/4r2R/8/8
Reprints: De Problemist 1928
102 Valves and Bi-Valves , p. 102, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
75 - P1023922
Alain C. White
590 The Chess Amateur 09/1928
1. Originality Prize
C.A. Valve-Turnier 1928
4 V-Varianten mit 1 s. Stein
Einziges Beispiel!
(10+6) C+
#2
Alain C. White
590 The Chess Amateur 09/1928
1. Originality Prize
C.A. Valve-Turnier 1928
4 V-Varianten mit 1 s. Stein
Einziges Beispiel!
(10+6) C+
#2
1. Td8! droht 2. Sg6#
1. ... Sd6 2. Sd7#
1. ... Sd4 2. Td5#
1. ... Se3 2. Dg3#
1. ... Sg3 2. Df4#
1. ... Se7,Dg7,Sh6,Sxh4 2. exd3#
1. ... Dd7,Dxd8 2. Df4#
1. ... Dxf3+ 2. Sxf3#
1. ... Sd6 2. Sd7#
1. ... Sd4 2. Td5#
1. ... Se3 2. Dg3#
1. ... Sg3 2. Df4#
1. ... Se7,Dg7,Sh6,Sxh4 2. exd3#
1. ... Dd7,Dxd8 2. Df4#
1. ... Dxf3+ 2. Sxf3#
Keywords: Brian Stephenson Collection (8787), Valve (1 Stein/4 Varianten), Theme B2, Block, Line closing, Unpinning, Batteriematt vertikal, Queen sacrifice
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5R2/8/5p2/2N1kn2/7N/2Pq1Q1K/B2BP3/1bb1R3
Reprints: 101 Valves and Bi-Valves , p. 114, 1930
27 Diario de Noticias (Rio) 28/12/1930
8 The Palestine Post 30/03/1945
42 Problemschach [Siehndel] , p. 407, 1985
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-06-02 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5R2/8/5p2/2N1kn2/7N/2Pq1Q1K/B2BP3/1bb1R3
Reprints: 101 Valves and Bi-Valves , p. 114, 1930
27 Diario de Noticias (Rio) 28/12/1930
8 The Palestine Post 30/03/1945
42 Problemschach [Siehndel] , p. 407, 1985
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-06-02 more...
76 - P1023923
Simon S. Lewman
Leonid A. Isaev
560 The Chess Amateur 07/1928
1. Preis
C.A. Valve-Turnier 1928
Bestes Springer-Valve Problem
(8+11) C+
#2
Simon S. Lewman
Leonid A. Isaev
560 The Chess Amateur 07/1928
1. Preis
C.A. Valve-Turnier 1928
Bestes Springer-Valve Problem
(8+11) C+
#2
1. Sg5! droht 2. Se6#
1. ... Se3 2. Sf3#
1. ... Sc3 2. Td3#
1. ... Sb4 2. Sb5#
1. ... Se7 2. Lc5#
1. ... Sc7 2. Dc5#
1. ... Sf4 2. De4#
1. ... Se3 2. Sf3#
1. ... Sc3 2. Td3#
1. ... Sb4 2. Sb5#
1. ... Se7 2. Lc5#
1. ... Sc7 2. Dc5#
1. ... Sf4 2. De4#
Keywords: Brian Stephenson Collection (8788), Valve (S/dreifach), Bivalve, Line closing, Theme B2
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 2r1Rb2/5NpK/1nQB1pB1/3np2p/3k3r/Nq4R1/8/8
Reprints: 104 Valves and Bi-Valves , p. 117, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 2r1Rb2/5NpK/1nQB1pB1/3np2p/3k3r/Nq4R1/8/8
Reprints: 104 Valves and Bi-Valves , p. 117, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
77 - P1023924
Cyril S. Kipping
557 The Chess Amateur 06/1928
1. Preis
C.A. Valve-Turnier 1928
Bestes Bi-Valve Problem
(11+8) C+
#2
Cyril S. Kipping
557 The Chess Amateur 06/1928
1. Preis
C.A. Valve-Turnier 1928
Bestes Bi-Valve Problem
(11+8) C+
#2
1. Tg4! droht 2. f4#
1. ... Sf2 2. d4#
1. ... Sf2 2. d4#
Keywords: Brian Stephenson Collection (8789), Pawn mate (Drohung+Lösung), Bivalve
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/1q6/3pp1Bp/1N2k2N/2P1nR1P/b4P2/1r1P2K1/Q3B3
Reprints: 119 Valves and Bi-Valves , p. 132, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/1q6/3pp1Bp/1N2k2N/2P1nR1P/b4P2/1r1P2K1/Q3B3
Reprints: 119 Valves and Bi-Valves , p. 132, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
78 - P1023925
Alberto Mari
552 The Chess Amateur 06/1928
2. Originality Prize
C.A. Valve-Turnier 1928
4 V-Varianten mit 2 s. Steinen
(10+8) C+
#2
Alberto Mari
552 The Chess Amateur 06/1928
2. Originality Prize
C.A. Valve-Turnier 1928
4 V-Varianten mit 2 s. Steinen
(10+8) C+
#2
1. Lb7! droht 2. c8=S#
1. ... Sf6 2. Lxf8#
1. ... Se5 2. Da3#
1. ... Sc5 2. Sb5#
1. ... Lf7 2. Sxf5#
1. ... Sf6 2. Lxf8#
1. ... Se5 2. Da3#
1. ... Sc5 2. Sb5#
1. ... Lf7 2. Sxf5#
Henrik Juel: C+ Popeye 4.61 (except for the promotion mate dual 1... Sb8 2.cxb8=DL#) (2022-07-21)
comment
comment
Keywords: Brian Stephenson Collection (8790), Valve (4 Varianten), under-promotion (wS als Drohung), Line closing (vierfach)
Genre: 2#
Computer test: HJ: Popeye 4.61
FEN: 2B1br2/K1Pn2B1/NpPk2pR/5q2/2PN1n2/4Q3/8/8
Reprints: 102 Valves and Bi-Valves , p. 115, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: HJ: Popeye 4.61
FEN: 2B1br2/K1Pn2B1/NpPk2pR/5q2/2PN1n2/4Q3/8/8
Reprints: 102 Valves and Bi-Valves , p. 115, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
79 - P1023926
Cyril S. Kipping
580 The Chess Amateur 08/1928
2. Preis
C. A. Valve-Turnier 1928
2. bestes S-Valve Problem
(10+7)
#2
Cyril S. Kipping
580 The Chess Amateur 08/1928
2. Preis
C. A. Valve-Turnier 1928
2. bestes S-Valve Problem
(10+7)
#2
1. Lf2! droht 2. Tg3#
1. ... Se6 2. Df5#
1. ... Sc6 2. Sxc5#
1. ... Sb7 2. Da6#
1. ... Se6 2. Df5#
1. ... Sc6 2. Sxc5#
1. ... Sb7 2. Da6#
Keywords: Brian Stephenson Collection (8791), Valve (sS, dreifach), Line closing (dreifach)
Genre: 2#
FEN: 2qn2RK/5p2/5Q2/2bp3B/N2P1P2/1Ppk2B1/4R3/8
Reprints: 105 Valves and Bi-Valves , p. 118, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
FEN: 2qn2RK/5p2/5Q2/2bp3B/N2P1P2/1Ppk2B1/4R3/8
Reprints: 105 Valves and Bi-Valves , p. 118, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
80 - P1023927
Gustaaf Josephus Nietvelt
547 The Chess Amateur 06/1928
2. Preis
C.A. Valve-Turnier 1928
Zweitbestes Bi-Valve Problem
(8+8) C+
#2
Gustaaf Josephus Nietvelt
547 The Chess Amateur 06/1928
2. Preis
C.A. Valve-Turnier 1928
Zweitbestes Bi-Valve Problem
(8+8) C+
#2
1. Td8! droht 2. Dd7#
1. ... e5 2. Se6#
1. ... e6 2. Se8#
1. ... e5 2. Se6#
1. ... e6 2. Se8#
81 - P1023928
Gabriel Leon-Martin
The Chess Amateur 1928
3. Originality Prize
C.A. Valve-Turnier 1928
(11+12)
#2
Gabriel Leon-Martin
The Chess Amateur 1928
3. Originality Prize
C.A. Valve-Turnier 1928
(11+12)
#2
1. Tg5! droht 2. h8=D#
1. ... Sf3 2. Td5#
1. ... Sf1 2. Tb3#
1. ... Sb6 2. Sxb5#
1. ... Lb4 2. Sb3#
1. ... Lb6 2. Sxb5#
1. ... Sf3 2. Td5#
1. ... Sf1 2. Tb3#
1. ... Sb6 2. Sxb5#
1. ... Lb4 2. Sb3#
1. ... Lb6 2. Sxb5#
Keywords: Brian Stephenson Collection (8793), Valve (Lös. 1-4), Bivalve (Lös. 5)
Genre: 2#
FEN: 1rn5/p1N1pKRP/3pP3/1rb5/3k1Pp1/p1RP4/3N1P1n/B6q
Reprints: 103 Valves and Bi-Valves , p. 116, 1930
Problemschach [Sidler] , p. 105, 1968
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
FEN: 1rn5/p1N1pKRP/3pP3/1rb5/3k1Pp1/p1RP4/3N1P1n/B6q
Reprints: 103 Valves and Bi-Valves , p. 116, 1930
Problemschach [Sidler] , p. 105, 1968
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
82 - P1023929
Comins Mansfield
568 The Chess Amateur 07/1928
3. Preis
C.A. Valve-Turnier 1928
Drittbestes Springer-Valve Problem
(9+9) C+
#2
Comins Mansfield
568 The Chess Amateur 07/1928
3. Preis
C.A. Valve-Turnier 1928
Drittbestes Springer-Valve Problem
(9+9) C+
#2
1. Sd1! droht 2. Sdc3#
1. ... Sd7 2. Tc8#
1. ... Sg4 2. Th3#
1. ... Se8 2. Tc7#
1. ... Sh5 2. Tg3#
1. ... Ke4 2. Txe3#
1. ... Sd7 2. Tc8#
1. ... Sg4 2. Th3#
1. ... Se8 2. Tc7#
1. ... Sh5 2. Tg3#
1. ... Ke4 2. Txe3#
Keywords: Brian Stephenson Collection (8794), Valve, Bivalve, Battery mates (vierfach), Line closing (vierfach)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: Q5r1/6qr/p1R1pn2/1P1k1p2/5B2/4pR2/K3NN2/7B
Reprints: 106 Valves and Bi-Valves , p. 119, 1930
Complete Mansfield 1996
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: Q5r1/6qr/p1R1pn2/1P1k1p2/5B2/4pR2/K3NN2/7B
Reprints: 106 Valves and Bi-Valves , p. 119, 1930
Complete Mansfield 1996
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
83 - P1023930
Jacob E. Funk
349 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Springer-Valve Problem
(8+12) cooked
#2
Jacob E. Funk
349 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Springer-Valve Problem
(8+12) cooked
#2
1. Lxf4! droht 2. Se5#
1. ... Sg1 2. Dh1#
1. ... Sg3 2. Sh4#
1. ... Sc3 2. Sxd4#
1. ... Sc1 2. Sxe1#
Cook: 1. Lb8,Lc7,Ld6,Lf6,Lg7,Lh8
1. ... Sg1 2. Dh1#
1. ... Sg3 2. Sh4#
1. ... Sc3 2. Sxd4#
1. ... Sc1 2. Sxe1#
Cook: 1. Lb8,Lc7,Ld6,Lf6,Lg7,Lh8
SCHRECKE: NL's: 1.Lb8,Lc7,Ld6,Lf6,Lg7,Lh8 (2022-07-23)
milan: bSc5-f4 bPe6-d5 1. B×f4! pure matching 3 fold knights and 1 fold bishop M.Frelih (2022-12-11)
comment
milan: bSc5-f4 bPe6-d5 1. B×f4! pure matching 3 fold knights and 1 fold bishop M.Frelih (2022-12-11)
comment
Keywords: Brian Stephenson Collection (8795), Valve (sS), Line closure (vierfach)
Genre: 2#
FEN: 8/8/4p1N1/2n1BBKb/3p1pp1/3P1k1p/1bNRn2Q/1r2q3
Reprints: 108 Valves and Bi-Valves , p. 121, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
Genre: 2#
FEN: 8/8/4p1N1/2n1BBKb/3p1pp1/3P1k1p/1bNRn2Q/1r2q3
Reprints: 108 Valves and Bi-Valves , p. 121, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
84 - P1023931
Sandor Hertmann
591 The Chess Amateur 1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Bauern-Valve mit En Passant
(10+9)
#2
Sandor Hertmann
591 The Chess Amateur 1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Bauern-Valve mit En Passant
(10+9)
#2
1. d4! droht 2. Tc5#
1. ... c4xd3ep 2. Dxg2#
1. ... c4xd3ep 2. Dxg2#
Keywords: Brian Stephenson Collection (8796), Valve (sB), En passant, Line closing
Genre: 2#
FEN: 5N1n/2B4p/BPk3qR/6R1/p1p3N1/2r5/1nQP2b1/1K6
Reprints: 116 Valves and Bi-Valves , p. 129, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
FEN: 5N1n/2B4p/BPk3qR/6R1/p1p3N1/2r5/1nQP2b1/1K6
Reprints: 116 Valves and Bi-Valves , p. 129, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
85 - P1023932
Cyril S. Kipping
592 The Chess Amateur 09/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Turm-Valve Problem
(8+10) C+
#2
Cyril S. Kipping
592 The Chess Amateur 09/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Turm-Valve Problem
(8+10) C+
#2
1. Se7! droht 2. Sxg6#
1. ... Td5 2. a8=D#
1. ... Tf3 2. Lxg3#
1. ... Te5,Tf4 2. Db8#
1. ... Td5 2. a8=D#
1. ... Tf3 2. Lxg3#
1. ... Te5,Tf4 2. Db8#
Keywords: Brian Stephenson Collection (8797), Valve (sT), Promotion in the mating move (wD), Batteriematt vertikal, Line closing
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 6Nk/P2p1KR1/3QPpp1/2n2rp1/4b2B/6b1/5p2/7R
Reprints: 110 Valves and Bi-Valves , p. 123, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 6Nk/P2p1KR1/3QPpp1/2n2rp1/4b2B/6b1/5p2/7R
Reprints: 110 Valves and Bi-Valves , p. 123, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
86 - P1023933
Cyril S. Kipping
579 The Chess Amateur 08/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Kombination Valve/Bi-Valve
(10+7) C+
#2
Cyril S. Kipping
579 The Chess Amateur 08/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Kombination Valve/Bi-Valve
(10+7) C+
#2
1. Sg5! droht 2. g7#
1. ... Sb1,Sd1 2. Lg2#
1. ... Sa2,Sa4 2. Ta8#
1. ... Sb5 2. b8=D#
1. ... Sd5 2. d8=D#
1. ... Se4 2. Th4#
1. ... Se2 2. Lf1#
Brian Stephenson gibt 'Comins Mansfield' als Autor an, bitte prüfen! (db)
1. ... Sb1,Sd1 2. Lg2#
1. ... Sa2,Sa4 2. Ta8#
1. ... Sb5 2. b8=D#
1. ... Sd5 2. d8=D#
1. ... Se4 2. Th4#
1. ... Se2 2. Lf1#
Brian Stephenson gibt 'Comins Mansfield' als Autor an, bitte prüfen! (db)
Mario Richter: Interessant ist der Kommentar in der YACPDB (https://www.yacpdb.org/#92040), letzte Klarheit dürfte aber nur ein Blick ins Original schaffen ... (2022-07-24)
more ...
comment
more ...
comment
Keywords: Brian Stephenson Collection (8799), Valve (zwei), Bivalve (vier), Knight's wheel (schwarz), Promotion in the mating move (wD, doppelt), Pawn mate (Drohung)
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 7k/1P1PpK1N/6P1/R4P2/1r3R2/1pn4B/3r4/q6Q
Reprints: 124 Valves and Bi-Valves , p. 137, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 7k/1P1PpK1N/6P1/R4P2/1r3R2/1pn4B/3r4/q6Q
Reprints: 124 Valves and Bi-Valves , p. 137, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-23 more...
87 - P1023935
Alberto Mari
553 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Valve-Problem (Entfesselung)
(8+10) C+
#2
Alberto Mari
553 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Valve-Problem (Entfesselung)
(8+10) C+
#2
1. Ta3! droht 2. d4#
1. ... Tce5 2. Df4#
1. ... Tcd5 2. De4#
1. ... Tce5 2. Df4#
1. ... Tcd5 2. De4#
Keywords: Brian Stephenson Collection (8801), Valve (Entfesselung)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 7q/5n2/2bb1B2/2r3r1/p1Q4p/3Pkp1N/R2N4/2K2B2
Reprints: 122 Valves and Bi-Valves , p. 135, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 7q/5n2/2bb1B2/2r3r1/p1Q4p/3Pkp1N/R2N4/2K2B2
Reprints: 122 Valves and Bi-Valves , p. 135, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
88 - P1023936
Alberto Mari
562 The Chess Amateur 07/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Läufer-Valve Problem
(10+10) C+
#2
Alberto Mari
562 The Chess Amateur 07/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Läufer-Valve Problem
(10+10) C+
#2
1. Tc4! droht 2. b4#
1. ... Lc6 2. Sc5#
1. ... Le4 2. Ta4#
1. ... Lc6 2. Sc5#
1. ... Le4 2. Ta4#
Keywords: Brian Stephenson Collection (8802), Schiffmann defence (vierte Form), Valve (sL), Batteriematt vertikal, Line closing
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5B2/QpP5/N2qr3/1P1bp3/6Rr/kP1R1p2/2B4p/1K4b1
Reprints: De Problemist 1929
De Problemist 1930
112 Valves and Bi-Valves , p. 125, 1930
Faszinierendes Schachproblem , p. 68, 1963
Problemschach [Sidler] , p. 99, 1968
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5B2/QpP5/N2qr3/1P1bp3/6Rr/kP1R1p2/2B4p/1K4b1
Reprints: De Problemist 1929
De Problemist 1930
112 Valves and Bi-Valves , p. 125, 1930
Faszinierendes Schachproblem , p. 68, 1963
Problemschach [Sidler] , p. 99, 1968
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
89 - P1023937
Gustaaf Josephus Nietvelt
546 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Springer-Valve Problem
(10+10) C+
#2
Gustaaf Josephus Nietvelt
546 The Chess Amateur 06/1928
Ehrende Erwähnung
C.A. Valve-Turnier 1928
Springer-Valve Problem
(10+10) C+
#2
1. La4! droht 2. Tb7#
1. ... Se5 2. c6#
1. ... Se3 2. Tf2#
1. ... Sf2 2. Td3#
1. ... Se5 2. c6#
1. ... Se3 2. Tf2#
1. ... Sf2 2. Td3#
Keywords: Brian Stephenson Collection (8803), Valve (sS), Battery mates
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5BK1/3B2R1/5p1p/p1P5/1k1P2n1/1p4qr/1N1R2pb/1N2Q3
Reprints: 107 Valves and Bi-Valves , p. 120, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 5BK1/3B2R1/5p1p/p1P5/1k1P2n1/1p4qr/1N1R2pb/1N2Q3
Reprints: 107 Valves and Bi-Valves , p. 120, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
90 - P1023939
Henry E. Funk
566 The Chess Amateur 07/1928
Preis
C.A. Valve-Turnier 1928
Bestes sB e.p. Valve-Problem
(8+9) C+
#2
Henry E. Funk
566 The Chess Amateur 07/1928
Preis
C.A. Valve-Turnier 1928
Bestes sB e.p. Valve-Problem
(8+9) C+
#2
1. d4! droht 2. Te5#
1. ... cxd3ep 2. Txe3#
1. ... c3 2. Dd3#
1. ... cxd3ep 2. Txe3#
1. ... c3 2. Dd3#
Keywords: Brian Stephenson Collection (8805), Valve (sB), En passant, half-pin white pieces
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: b7/5K2/2p3N1/1QBR1p2/1rp1kN2/1q2p1R1/1b1P4/8
Reprints: 115 Valves and Bi-Valves , p. 128, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: b7/5K2/2p3N1/1QBR1p2/1rp1kN2/1q2p1R1/1b1P4/8
Reprints: 115 Valves and Bi-Valves , p. 128, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
91 - P1023940
Jacob E. Funk
567 The Chess Amateur 07/1928
Preis
C.A. Valve Turnier 1928
Kombination Valve/Bi-Valve
(8+10) C+
#2
Jacob E. Funk
567 The Chess Amateur 07/1928
Preis
C.A. Valve Turnier 1928
Kombination Valve/Bi-Valve
(8+10) C+
#2
1. Tb3! droht 2. Lb4#
1. ... Sd6 2. Se6#
1. ... Sc7 2. Lxb6#
1. ... Sd4 2. Dd5#
1. ... Sc3 2. Dxc4#
1. ... Sd6 2. Se6#
1. ... Sc7 2. Lxb6#
1. ... Sd4 2. Dd5#
1. ... Sc3 2. Dxc4#
Keywords: Brian Stephenson Collection (8806), Valve, Bivalve, Line closure (vierfach)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 2Nb2K1/n7/1q3p2/Bnk5/P1p1QN2/p3R3/2rrB3/8
Reprints: 123 Valves and Bi-Valves , p. 136, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 2Nb2K1/n7/1q3p2/Bnk5/P1p1QN2/p3R3/2rrB3/8
Reprints: 123 Valves and Bi-Valves , p. 136, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
92 - P1023941
Cyril S. Kipping
593 The Chess Amateur 09/1930
Preis
C.A. Valve-Turnier 1928
Bestes Schach-Valve Problem
(10+13)
#2
Cyril S. Kipping
593 The Chess Amateur 09/1930
Preis
C.A. Valve-Turnier 1928
Bestes Schach-Valve Problem
(10+13)
#2
1. Sxe4! Sd4+ 2. S4c5#
1. ... Sd6+ 2. S6c5#
1. ... Ke5 2. Sd2#
1. ... Sd6+ 2. S6c5#
1. ... Ke5 2. Sd2#
Keywords: Brian Stephenson Collection (8807), Battery mates, Valve, Provoked check (doppelt)
Genre: 2#
FEN: 4R3/p1pQ1pP1/4N1n1/KnNr1kP1/4p1p1/p1pB2P1/q3R3/2b5
Reprints: 117 Valves and Bi-Valves , p. 130, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
FEN: 4R3/p1pQ1pP1/4N1n1/KnNr1kP1/4p1p1/p1pB2P1/q3R3/2b5
Reprints: 117 Valves and Bi-Valves , p. 130, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
93 - P1023942
Alberto Mari
575 The Chess Amateur 08/1928
Preis
C.A. Valve-Turnier 1928
Bestes Läufer-Valve Problem
(9+8) C+
#2
Alberto Mari
575 The Chess Amateur 08/1928
Preis
C.A. Valve-Turnier 1928
Bestes Läufer-Valve Problem
(9+8) C+
#2
1. De6! droht 2. De2#
1. ... Le5 2. Ld3#
1. ... Lc5 2. Da6#
1. ... Le5 2. Ld3#
1. ... Lc5 2. Da6#
Keywords: Brian Stephenson Collection (8808), pin-mate, Valve (sL), Unpinning, Line closing
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 6Q1/4B3/5p2/3q1B1K/P1kb3p/1R3N2/PpnP4/3r4
Reprints: 111 Valves and Bi-Valves , p. 124, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 6Q1/4B3/5p2/3q1B1K/P1kb3p/1R3N2/PpnP4/3r4
Reprints: 111 Valves and Bi-Valves , p. 124, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
94 - P1023943
Alberto Mari
583 The Chess Amateur 09/1928
Preis
C.A. Valve-Turnier 1928
Bestes Turm-Valve Problem
(9+12) C+
#2
Alberto Mari
583 The Chess Amateur 09/1928
Preis
C.A. Valve-Turnier 1928
Bestes Turm-Valve Problem
(9+12) C+
#2
1. Tb2! droht 2. Lc7#
1. ... Td4 2. Lxc6#
1. ... Tf6 2. Sh7#
1. ... Te6 2. Td8#
1. ... Td5 2. Sxc6#
1. ... Td4 2. Lxc6#
1. ... Tf6 2. Sh7#
1. ... Te6 2. Td8#
1. ... Td5 2. Sxc6#
Keywords: Brian Stephenson Collection (8809), Valve (sT), Battery mates, Line closing
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 1k3N1Q/pB1RNp2/KRpr2p1/B1p1b3/p1P3b1/3p4/8/7q
Reprints: 7 Glos Poranny 13/07/1929
109 Valves and Bi-Valves , p. 122, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 1k3N1Q/pB1RNp2/KRpr2p1/B1p1b3/p1P3b1/3p4/8/7q
Reprints: 7 Glos Poranny 13/07/1929
109 Valves and Bi-Valves , p. 122, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
95 - P1023944
Alberto Mari
581 The Chess Amateur 08/1928
Preis
C.A. Valve-Turnier 1928
Bestes Valve-Problem (Entfesselung)
(8+14) C+
#2
Alberto Mari
581 The Chess Amateur 08/1928
Preis
C.A. Valve-Turnier 1928
Bestes Valve-Problem (Entfesselung)
(8+14) C+
#2
1. Bf6! droht 2. Dxh7#
1. ... Lg2 2. Sxf2#
1. ... b6 2. Txd4#
1. ... Lg2 2. Sxf2#
1. ... b6 2. Txd4#
Keywords: Brian Stephenson Collection (8810), Valve (sL+sB), Line closure, Unpinning
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 3b4/qp5p/r2RK3/1p2BPpQ/2Npk1N1/7b/3nPp1r/5n2
Reprints: 121 Valves and Bi-Valves , p. 134, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 3b4/qp5p/r2RK3/1p2BPpQ/2Npk1N1/7b/3nPp1r/5n2
Reprints: 121 Valves and Bi-Valves , p. 134, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-21 more...
96 - P1023945
George Page
577 The Chess Amateur 1928
Preis
C.A. Valve-Turnier 1928
Bestes Bauern-Valve Problem
mit Thema-Schlüssel
(10+9) C+
#2
George Page
577 The Chess Amateur 1928
Preis
C.A. Valve-Turnier 1928
Bestes Bauern-Valve Problem
mit Thema-Schlüssel
(10+9) C+
#2
1. Lg3! droht 2. Dxf8#
1. ... g5 2. Df3#
1. ... Txa8 2. Tf7#
1. ... g5 2. Df3#
1. ... Txa8 2. Tf7#
Keywords: Brian Stephenson Collection (8811), Valve (sB), Sacrifice key, Queen sacrifice
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: QB3rn1/3R2p1/4Pk1b/2N4R/2n4P/7r/1p1N3p/1B5K
Reprints: 113 Valves and Bi-Valves , p. 126, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: QB3rn1/3R2p1/4Pk1b/2N4R/2n4P/7r/1p1N3p/1B5K
Reprints: 113 Valves and Bi-Valves , p. 126, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-22 more...
1. Db6! Kf4 2. Txf3#
1. ... Kd6 2. Txc6#
1. ... Kd6 2. Txc6#
Keywords: Brian Stephenson Collection (8940), Valve (sK zweifach)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/K1PP2R1/2p2q2/4k1P1/8/1QR2pNP/BBN1P3/1n6
Reprints: 84 Valves and Bi-Valves , p. 96, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/K1PP2R1/2p2q2/4k1P1/8/1QR2pNP/BBN1P3/1n6
Reprints: 84 Valves and Bi-Valves , p. 96, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-07-24 more...
1. Df1! droht 2. Tf4#
1. ... De5 2. Dd3#
1. ... De4 2. Sc6#
1. ... Ke5 2. Df4#
1. ... De5 2. Dd3#
1. ... De4 2. Sc6#
1. ... Ke5 2. Df4#
Keywords: Brian Stephenson Collection (11956)
Genre: 2#
FEN: 8/1n3pB1/1K1PBR2/1p1N1Q2/1N1k4/1p6/4q3/1n2r3
Reprints: 1246 Wiener Hausfrauen-Zeitung 48, p. 438, 30/11/1902
12 Helsingfors Posten 04/04/1903
The Golden Argosy 1929
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2019-11-25 more...
Genre: 2#
FEN: 8/1n3pB1/1K1PBR2/1p1N1Q2/1N1k4/1p6/4q3/1n2r3
Reprints: 1246 Wiener Hausfrauen-Zeitung 48, p. 438, 30/11/1902
12 Helsingfors Posten 04/04/1903
The Golden Argosy 1929
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2019-11-25 more...
* 1. ... Kf5 2. e4#
1. Ta1! Kf5 2. Db1#
1. ... d5 2. Ld3#
1. ... e6,e5 2. Sxd6#
1. Ta1! Kf5 2. Db1#
1. ... d5 2. Ld3#
1. ... e6,e5 2. Sxd6#
Keywords: Brian Stephenson Collection (12039), Mutate, Bahnung (TD), Changed mates, Pawn mate (Satz)
Genre: 2#
Computer test: SCHRECKE: popeye 4.85
FEN: 4N3/4p3/3p4/7p/1pB1kP1R/pP6/K3P3/4R1Q1
Reprints: 9 Washington Times 16/01/1904
Casopis ceskoslovenskych sachistu 1906
Casopis Ceskych Sachistu 1906
97 Arbeiter-Schachzeitung (Chemnitz) 05/1913
All Change Here! 1919
18B Simple Two-move Themes 1924
Mate in two moves 1931
640 Beispiele zur Ideengeschichte des Schachproblems , p. 136, 1982
Solving in Style [Nunn] 1985
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-02-15 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.85
FEN: 4N3/4p3/3p4/7p/1pB1kP1R/pP6/K3P3/4R1Q1
Reprints: 9 Washington Times 16/01/1904
Casopis ceskoslovenskych sachistu 1906
Casopis Ceskych Sachistu 1906
97 Arbeiter-Schachzeitung (Chemnitz) 05/1913
All Change Here! 1919
18B Simple Two-move Themes 1924
Mate in two moves 1931
640 Beispiele zur Ideengeschichte des Schachproblems , p. 136, 1982
Solving in Style [Nunn] 1985
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-02-15 more...
100 - P1027232
Godfrey F. Heathcote
Hampstead and Highgate Express 1905
1. Preis
8. Zweier-Turnier 1905-1906
(10+11) C+
#2
Godfrey F. Heathcote
Hampstead and Highgate Express 1905
1. Preis
8. Zweier-Turnier 1905-1906
(10+11) C+
#2
1. Tcc7 droht 2. Sc3#
1. ... Se6 2. Ted7#
1. ... Sc6 2. Tcd7#
1. ... Sb5 2. Tc5#
1. ... Sxb3 2. Dd3#
1. ... Sc2 2. b4#
1. ... Se2 2. Dxh5#
1. ... Sf3 2. De4#
1. ... Sf5 2. Te5#
1. ... Se6 2. Ted7#
1. ... Sc6 2. Tcd7#
1. ... Sb5 2. Tc5#
1. ... Sxb3 2. Dd3#
1. ... Sc2 2. b4#
1. ... Se2 2. Dxh5#
1. ... Sf3 2. De4#
1. ... Sf5 2. Te5#
Keywords: Brian Stephenson Collection (12115), Knight's wheel (s), Mirror mate (dreifach)
Genre: 2#
Computer test: Popeye 4.61
FEN: 6K1/pN2R1PQ/p7/r2k3r/N2n4/1P2p3/BB5p/2Rb2bq
Reprints: 1430 Wiener Hausfrauen-Zeitung 23, p. 364, 10/06/1906
682 Schweizerische Schachzeitung , p. 135, 09/1906
54 Favorit-Schachaufgaben , p. 14, nach 1910
20 Badische Presse 09/07/1921
Simple Two-move Themes 1924
44E Simple Two-move Themes 1924
Mate in two moves 1931
3 The Week-End Problems Book , p. 157, 1932
5 Journal de Geneve 04/12/1932
19 Schachmatai ir bridzas 01/03/1934
9 Chess Problems: Introduction to an Art , p. 34, 1963
67 Classic Chess Problems by Pioneer Composers , p. 39, 1970
628 Beispiele zur Ideengeschichte des Schachproblems , p. 134, 1982
Chess Wizardry [Rice] 1996
1614 Encyclopedia of Chess Problems 2012
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2023-05-31 more...
Genre: 2#
Computer test: Popeye 4.61
FEN: 6K1/pN2R1PQ/p7/r2k3r/N2n4/1P2p3/BB5p/2Rb2bq
Reprints: 1430 Wiener Hausfrauen-Zeitung 23, p. 364, 10/06/1906
682 Schweizerische Schachzeitung , p. 135, 09/1906
54 Favorit-Schachaufgaben , p. 14, nach 1910
20 Badische Presse 09/07/1921
Simple Two-move Themes 1924
44E Simple Two-move Themes 1924
Mate in two moves 1931
3 The Week-End Problems Book , p. 157, 1932
5 Journal de Geneve 04/12/1932
19 Schachmatai ir bridzas 01/03/1934
9 Chess Problems: Introduction to an Art , p. 34, 1963
67 Classic Chess Problems by Pioneer Composers , p. 39, 1970
628 Beispiele zur Ideengeschichte des Schachproblems , p. 134, 1982
Chess Wizardry [Rice] 1996
1614 Encyclopedia of Chess Problems 2012
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2023-05-31 more...
Show statistic for complete result. Show search result faster by using ids.
https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+NOT+K%3D%27Batterieaufbau%27+AND+S%3D%27Mate%27
The problems of this query have been registered by the following contributors:
Gerd Wilts (15)Erich Bartel (1)
hpr (15)
Markus Manhart (5)
Andreas Mokosch (1)
Hans-Jürgen Schäfer (2)
Ralf Krätschmer (1)
Ronald Schäfer (1)
Torsten Linss (2)
Felber, Volker (1)
Hans Gruber (2)
Frank Müller (11)
Brian Stephenson (43)
because the black knight can be extracted only by retracting f7-f6, trapping white king (2020-12-13)
A.Buchanan: Some brave person should sort out the keywords for record retros properly. Here's a good example. The last move is Type B, but the first move question is Type A. The original stipulation (which I think is just about the first move?) should stand. The first move question is a *deemed* stipulation (new terminology) and allows us to leverage an existing problem, without creating a new version or editing the prior stipulation. This is particularly true here, since the problems are of different type. (2020-12-14)
Hans-Jürgen Manthey: mögliche Retro-Zugfolge:
1.f7xLg8S Ka7-a8 2. e6xSf7 Sd6-f7+ 3. e5-e6 Le6-g8 4. Kg8-h8 Lc8-e6+ 5. Th8-h7 Ka8-a7 6. Kh7-g8 Kb7-a8 7. Kg6-h7 Kc7-b7 8. h7-h8T Kd8-c7 9. d4xSe5 Sd7-e5+ 10. Kf5-g6 Sf7-d6+ 11. g6xTh7 Th8-h7 12. g5-g6 h7-h6 13. Ke6-f5 Sh6-f7 14. g4-g5 Sg8-h6 15. e3xTd4 Ta4xSd4 16. f2xDe3 Dd2-e3+ 17. g2-g4 Ke8-d8 18. Kf5-e6 De2xd2 19. Ke4-f5 Dd1xe2+ 20. Kd3-e4 Df1xTd1 21. Sf3-d4 Dh1xLf1 22. Kc2-d3 Sb8-d7 23. Kc1-c2 Dh2xTh1 24. O-O-O Dc7xh2 25. Sg1-f3 Ta8xDa4 26. Dd1-a4+ Dc2-c7 27. Se6-c7+ Dc1xc2 28. Sc5-e6 Db2xLc1 29. Sd7-c5 Da2xb2 30. Se5xd7 Da5xa2 31. Sc6-e5 f7-f6 32. a7xc6 Dd8-a5 33. Sb5xa7 c7-c6 34. Sc3xb5 b7-b5 35. Sb1-c3 (2020-12-17)
Henrik Juel: 'The Chess Amateur 1979' must be wrong, as this magazine stopped in 1930 (2020-12-17)
Henrik Juel: .. and Eigenartige Schachprobleme just says Caissa 1979 (2020-12-17)
A.Buchanan: WinChloe does not have this problem at all! I am inclined to go with Eigenartige Schachprobleme. I suspect that Gerd was entering hundreds of compositions at scale, and a copy-paste error would be easy (2020-12-17)
A.Buchanan: Also P0001030 (2020-12-17)
A.Buchanan: Have removed "The Chess Amateur" as original source here. (2020-12-18)
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