39 problem(s) found in 4759 milliseconds (displaying 39 problem(s)). [COMMENTDATE>=20220810 AND NOT A='Eberle, Stefan' AND A='Dawson, Thomas R.'] [download as LaTeX]
1. a4 c5 2. a5 Db6 3. Ta4 Sc6 4. Td4 Tb8 5. b4 cxd4 6. b5 e5 7. d3 La3 8. Le3 Lc1 9. bxc6 Db2 10. c7 b5 11. a6 Tb7 12. axb7 h5 13. b8=L Lb7 14. c8=D+ Ke7 15. Sf3 d5 16. Dh3 Th6 17. g4 Ta6 18. Dg3 h4 19. c4 hxg3 20. h4 Ta1 21. h5 Kf6 22. Sh2 dxe3 23. h6 Kg5 24. h7 Kh4 25. c5 a5 26. c6 a4 27. c7 b4 28. c8=T b3 29. h8=S Se7 30. Sg6 fxg6 31. Lh3 Sc6 32. 0-0 Sb4 33. Ld6 Sc2 34. Td8 Se1
Keywords: Allumwandlung, Castling (wk), Non-Unique Proof Game
Genre: Retro
FEN: 3R4/1b4p1/3B2p1/3pp3/p5Pk/1p1Pp1pB/1q2PP1N/rNbQnRK1
Reprints: 53 Caissa's Wild Roses 1935
Chess unlimited 1969
150 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: Gunter Jordan, 2020-07-01 more...
Genre: Retro
FEN: 3R4/1b4p1/3B2p1/3pp3/p5Pk/1p1Pp1pB/1q2PP1N/rNbQnRK1
Reprints: 53 Caissa's Wild Roses 1935
Chess unlimited 1969
150 Shortest Proof Games 11/1991
Input: Gerd Wilts, 1995-06-03
Last update: Gunter Jordan, 2020-07-01 more...
1. exf3ep Lc2#
R: 1. f2-f4 f5xTe4 2. Tg4-e4 & e.g. f6-f5 3. Tg1-g4 f7-f6 4. Le4-h7 h5-h4 5. Lg2-e4 h6-h5 6. Lf1-g2 h7-h6 7. g2xh3
1.exf3e.p. Bc2# is the only possible solution, but this necessitates R: 1.f2-f4. Can we prove this?
(13+13) with 1+2 pawn captures. Bf8 captured at home, so to satisfy White appetite, the missing Black pawn (a or b) must have promoted via c2 on c1. Two more White units must be captured to allow this.
The kings cage can only be unlocked by retracting WPc2. But the clock is ticking as there are only 6 black moves which can be retracted.
The promoted piece was captured on e3 or h3. If either capture is undone, then a White bishop square is cut off, so WB must be replaced prior to this.
Now the order of the early moves is: WdP moves, WQB & WQR escape, BP promotes on c1 to X (capturing WR at some point), X captured by WP.
So the first White capture must be dxNe3 and the second White capture releases gxXh3. The second White capture releases WKB & WKR. WKR captured by original BfP.
The clock starts ticking with gxh3. Black has 6 pawn moves. WKB has 3 moves to reach h7. WR has 3 if it goes via d file, or 2 if it starts on g1 (in which case WfP or WQB must also move once). So certainly at least 6 White moves. Last move was therefore White (even if the stipulation didn't tell us), and it can only have been WfP coming from f3 or f4. If it had been coming from f3 it would have blocked WKB in its progress, so the last White move was indeed R: 1.f2-f4.
WKR did therefore move from g1-g4-e4, and R: 1. ... fxRe5 2. Rg4-e4. Prior to that, move order not unique, but counting still exact.
Note that WN loitering on b4, pretending to be part of the cage, is present on the board just to make up the numbers.
R: 1. f2-f4 f5xTe4 2. Tg4-e4 & e.g. f6-f5 3. Tg1-g4 f7-f6 4. Le4-h7 h5-h4 5. Lg2-e4 h6-h5 6. Lf1-g2 h7-h6 7. g2xh3
1.exf3e.p. Bc2# is the only possible solution, but this necessitates R: 1.f2-f4. Can we prove this?
(13+13) with 1+2 pawn captures. Bf8 captured at home, so to satisfy White appetite, the missing Black pawn (a or b) must have promoted via c2 on c1. Two more White units must be captured to allow this.
The kings cage can only be unlocked by retracting WPc2. But the clock is ticking as there are only 6 black moves which can be retracted.
The promoted piece was captured on e3 or h3. If either capture is undone, then a White bishop square is cut off, so WB must be replaced prior to this.
Now the order of the early moves is: WdP moves, WQB & WQR escape, BP promotes on c1 to X (capturing WR at some point), X captured by WP.
So the first White capture must be dxNe3 and the second White capture releases gxXh3. The second White capture releases WKB & WKR. WKR captured by original BfP.
The clock starts ticking with gxh3. Black has 6 pawn moves. WKB has 3 moves to reach h7. WR has 3 if it goes via d file, or 2 if it starts on g1 (in which case WfP or WQB must also move once). So certainly at least 6 White moves. Last move was therefore White (even if the stipulation didn't tell us), and it can only have been WfP coming from f3 or f4. If it had been coming from f3 it would have blocked WKB in its progress, so the last White move was indeed R: 1.f2-f4.
WKR did therefore move from g1-g4-e4, and R: 1. ... fxRe5 2. Rg4-e4. Prior to that, move order not unique, but counting still exact.
Note that WN loitering on b4, pretending to be part of the cage, is present on the board just to make up the numbers.
Jeliss: "Obstruction of passage square f3 to Bishop of same colour."
"Version 'Pittsburgh Leader' 08.06.1913"
Yoav Ben-Zvi: Appears as the first problem (D445) in the booklet on Dawson's RA problems by G.P. Jellis. The obstruction that occurs in the Try -1.Pf3-f4?, by WP of WB, is described as "obstruction of passage square". It is not considered by Dawson and his disciples to be a Retro opposition. Dawson's conception of RO was quite broad, it included cases where the interference was not by occupation of the target square, so the only valid reason that I can see to exclude this case is that the 2 pieces involved are both of the same color. Fabel's definition explicitly excludes "Monochrome RO". I conclude that it would be preferrable to interpret RO as a bi-chromatic interference. The keyword Retro opposition should be removed. (2018-04-07)
A.Buchanan: To my mind, RO involves some kind of parity-tempo issue between the sides, not just some kind of race-tempo. If it was just about "bi-chromatic interference", one might say that bPe4 blocks wBh7 from an immediate retreat, so it has to be wPf4 that retreats first, legitimizing the ep key. So I agree this is not RO. (2024-01-06)
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"Version 'Pittsburgh Leader' 08.06.1913"
Yoav Ben-Zvi: Appears as the first problem (D445) in the booklet on Dawson's RA problems by G.P. Jellis. The obstruction that occurs in the Try -1.Pf3-f4?, by WP of WB, is described as "obstruction of passage square". It is not considered by Dawson and his disciples to be a Retro opposition. Dawson's conception of RO was quite broad, it included cases where the interference was not by occupation of the target square, so the only valid reason that I can see to exclude this case is that the 2 pieces involved are both of the same color. Fabel's definition explicitly excludes "Monochrome RO". I conclude that it would be preferrable to interpret RO as a bi-chromatic interference. The keyword Retro opposition should be removed. (2018-04-07)
A.Buchanan: To my mind, RO involves some kind of parity-tempo issue between the sides, not just some kind of race-tempo. If it was just about "bi-chromatic interference", one might say that bPe4 blocks wBh7 from an immediate retreat, so it has to be wPf4 that retreats first, legitimizing the ep key. So I agree this is not RO. (2024-01-06)
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Keywords: Last Moves?, En passant as key
Genre: h#, Retro
FEN: nqb5/1rrpp1pB/KRp5/1p4B1/kN2pP1p/2P1P2P/PP2P2P/8
Reprints: D445 Retro-Opposition & Other Retro-Analytical Chess Problems 1989
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-06 more...
Genre: h#, Retro
FEN: nqb5/1rrpp1pB/KRp5/1p4B1/kN2pP1p/2P1P2P/PP2P2P/8
Reprints: D445 Retro-Opposition & Other Retro-Analytical Chess Problems 1989
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2024-01-06 more...
3 - 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)
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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)
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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. Th1 Sa1 2. Th4 Sh1 3. Tf4 Sc2#
Cook: NL
1. Tf1 Kh8 2. Tf2 Sa1 3. Df4 Sc2#
1. Df4 Sxa1 2. e1=L h6 3. Lf2 Sc2#
Cook: NL
1. Tf1 Kh8 2. Tf2 Sa1 3. Df4 Sc2#
1. Df4 Sxa1 2. e1=L h6 3. Lf2 Sc2#
teilweiser Rundlauf t
Adrian Storisteanu: Possible fix: bPe4 (instead of the bQ), +wPf5, +bPf6 (6+9). (2015-08-15)
Yuri Bilokin: correction bRd3(-bNd3), bBe4(-bQe4), bPf3(-bBf3) 6K1/8/8/7P/3Pb3/pN1rkpN1/3pp3/r7 (5+8) (2022-12-19)
A.Buchanan: This is very clean Yuri well done. I would shift bPa3 to a5. wK must be exactly on g8, else the problem is cooked (2022-12-20)
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Adrian Storisteanu: Possible fix: bPe4 (instead of the bQ), +wPf5, +bPf6 (6+9). (2015-08-15)
Yuri Bilokin: correction bRd3(-bNd3), bBe4(-bQe4), bPf3(-bBf3) 6K1/8/8/7P/3Pb3/pN1rkpN1/3pp3/r7 (5+8) (2022-12-19)
A.Buchanan: This is very clean Yuri well done. I would shift bPa3 to a5. wK must be exactly on g8, else the problem is cooked (2022-12-20)
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Keywords: Pure Round Trip
Genre: h#
FEN: 6K1/8/8/7P/3Pq3/pN1nkbN1/3pp3/r7
Input: hpr, 1996-09-05
Last update: Alfred Pfeiffer, 2015-08-15 more...
Genre: h#
FEN: 6K1/8/8/7P/3Pq3/pN1nkbN1/3pp3/r7
Input: hpr, 1996-09-05
Last update: Alfred Pfeiffer, 2015-08-15 more...
1. Kc3 De6 2. Kxd4 Dxd6+ 3. Ke4 De5#
NL
1. Kc3 Df5 2. Tf8 Kxd6 3. Kxd4 Dd3#
NL
1. Kc3 Df5 2. Tf8 Kxd6 3. Kxd4 Dd3#
Korrektur Hilmar Ebert: +sSe8 (erhält Quasi-Symmetrie)
Yuri Bilokin: Not all pieces in quasi-symmetry are necessary: the white pawn on h2 is superfluous. It is clear that more than 100 years ago there was such a direction in art, although some authors indulge in technical white pawns in our time. (2022-12-19)
A.Buchanan: The technical term for such a position is "symmetric constellation". "Quasi-symmetry" is where the position is nearly symmetric but not quite (e.g. game array except wPa2 is missing). In a symmetric constellation any redundant piece is a definite defect. A quasi-symmetric position is not an ornament, more of a consequence of the content. For example, a number of last move type DD problems are quasi-symmetric (2022-12-20)
Yuri Bilokin: Thanks for the interpretation (2022-12-20)
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Yuri Bilokin: Not all pieces in quasi-symmetry are necessary: the white pawn on h2 is superfluous. It is clear that more than 100 years ago there was such a direction in art, although some authors indulge in technical white pawns in our time. (2022-12-19)
A.Buchanan: The technical term for such a position is "symmetric constellation". "Quasi-symmetry" is where the position is nearly symmetric but not quite (e.g. game array except wPa2 is missing). In a symmetric constellation any redundant piece is a definite defect. A quasi-symmetric position is not an ornament, more of a consequence of the content. For example, a number of last move type DD problems are quasi-symmetric (2022-12-20)
Yuri Bilokin: Thanks for the interpretation (2022-12-20)
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Keywords: Pure Round Trip (D)
Genre: h#
FEN: 8/4K3/3p1r2/4Q3/3P1P2/8/1k2P2P/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2001-12-21 more...
Genre: h#
FEN: 8/4K3/3p1r2/4Q3/3P1P2/8/1k2P2P/8
Input: Hans-Jürgen Schäfer, 1996-09-23
Last update: hpr, 2001-12-21 more...
1. Kxe3 c5 2. Kd2 Sc4#
NL:
1. Td5 Lf5 2. Txe5 Sc2#
1. Lf3 S3g4 2. Lxe4 Lf2#
NL:
1. Td5 Lf5 2. Txe5 Sc2#
1. Lf3 S3g4 2. Lxe4 Lf2#
Yuri Bilokin: correction bRd7-f7, bBg4-a4, -bN7 8/5r2/4p3/4N3/bKPkB2B/4N3/4p3/2nr4 (6+7) (2022-12-15)
A.Buchanan: The whole point of this ornamental problem is the symmetry. Any correction must preserve that. How about getting rid of the 2 rooks and the g-h-file bishops, then shift wBe4 to a4? 8/2n5/4p3/4N3/BKPk4/4N3/4p3/2n5? (2022-12-16)
Yuri Bilokin: I agree that the position should be symmetrical and economical, without unnecessary figures. The value of the positions reflected here is close to zero. (2022-12-16)
comment
A.Buchanan: The whole point of this ornamental problem is the symmetry. Any correction must preserve that. How about getting rid of the 2 rooks and the g-h-file bishops, then shift wBe4 to a4? 8/2n5/4p3/4N3/BKPk4/4N3/4p3/2n5? (2022-12-16)
Yuri Bilokin: I agree that the position should be symmetrical and economical, without unnecessary figures. The value of the positions reflected here is close to zero. (2022-12-16)
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Keywords: Sacrifice of white pieces, Symmetrical position
Genre: h#
FEN: 8/2nr4/4p3/4N3/1KPkB1bB/4N3/4p3/2nr4
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-24 more...
Genre: h#
FEN: 8/2nr4/4p3/4N3/1KPkB1bB/4N3/4p3/2nr4
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-24 more...
1. Sxe6 Sf3 2. Sg7 Tf8#
NL:
1. Sf7 exf7 2. Kg7 f8=D#
NL:
1. Sf7 exf7 2. Kg7 f8=D#
Yuri Bilokin: correction wKa1-b2, then a2=a1 8/7R/4n3/4Pk2/4NPn1/8/8/1K6 (5+3) h#2
1.Sxe5 Sf2 2.Sg6 Rf7# (MM) (2022-12-15)
comment
1.Sxe5 Sf2 2.Sg6 Rf7# (MM) (2022-12-15)
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Keywords: Symmetrical position
Genre: h#
FEN: 7R/4n3/4Pk2/4NPn1/8/8/8/K7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-24 more...
Genre: h#
FEN: 7R/4n3/4Pk2/4NPn1/8/8/8/K7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-24 more...
1. d4 Sh6 2. Tg5 Ta6#
Cook: NL:
1. d4 Kg8 2. Tf5 Ta6#
Cook: NL:
1. d4 Kg8 2. Tf5 Ta6#
Adrian Storisteanu: Possible fix (a bit rough, but the wK is still employed):
Kg7 Ra1 Se6 Sf5 / Ke5 Rb4 Rd2 Sh8 pc4 pd3 (4+6)
1.c3 Sg5 2.Rf4 Ra5#. (2019-10-12)
A.Buchanan: Pushing wS to f8 & h6 seems to fix the cook. Maybe that's where they were meant to be all along: hard to imagine old TRD making such an error. WinChloe hasn't got this one, so can't confirm. (2019-10-14)
Adrian Storisteanu: Nice workaround, Andrew! Dawson had his share of cooks... (2019-10-14)
Yuri Bilokin: possibly wNf7-f5, bRe2-f2, -bPe4 7K/8/5kN1/1r1p1N2/8/8/5r2/R7 (4+4) (2022-12-16)
comment
Kg7 Ra1 Se6 Sf5 / Ke5 Rb4 Rd2 Sh8 pc4 pd3 (4+6)
1.c3 Sg5 2.Rf4 Ra5#. (2019-10-12)
A.Buchanan: Pushing wS to f8 & h6 seems to fix the cook. Maybe that's where they were meant to be all along: hard to imagine old TRD making such an error. WinChloe hasn't got this one, so can't confirm. (2019-10-14)
Adrian Storisteanu: Nice workaround, Andrew! Dawson had his share of cooks... (2019-10-14)
Yuri Bilokin: possibly wNf7-f5, bRe2-f2, -bPe4 7K/8/5kN1/1r1p1N2/8/8/5r2/R7 (4+4) (2022-12-16)
comment
Keywords: Symmetrical position, Asymmetrical solution, Superseded by (P1389169)
Genre: h#
FEN: 7K/5N2/5kN1/1r1p4/4p3/8/4r3/R7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: A.Buchanan, 2021-05-02 more...
Genre: h#
FEN: 7K/5N2/5kN1/1r1p4/4p3/8/4r3/R7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: A.Buchanan, 2021-05-02 more...
*) 1. ... Ld4 2. c3 Txc3 3. Ka1 Tc1#
1) 1. c3 a4 2. c2 Ta3 3. c1=L Le4#
NL:
*) 1. ... Td3 2. Kc2 Td1 3. c3 Lb3#
1. Kc1 Td3 2. Kc2 Td1 3. c3 Lb3#
1) 1. c3 a4 2. c2 Ta3 3. c1=L Le4#
NL:
*) 1. ... Td3 2. Kc2 Td1 3. c3 Lb3#
1. Kc1 Td3 2. Kc2 Td1 3. c3 Lb3#
Verstellung TcL
Yuri Bilokin: possibly wPa2-a3 8/7p/6pr/1P1BP2b/2p4K/P6R/7P/Bk6 (8+6) (2022-12-19)
A.Buchanan: Yes looks like a typo (2022-12-20)
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Yuri Bilokin: possibly wPa2-a3 8/7p/6pr/1P1BP2b/2p4K/P6R/7P/Bk6 (8+6) (2022-12-19)
A.Buchanan: Yes looks like a typo (2022-12-20)
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Keywords: Line closure
Genre: h#
FEN: 8/7p/6pr/1P1BP2b/2p4K/7R/P6P/Bk6
Input: Andreas Mokosch, 1997-07-23
Last update: hpr, 1999-10-26 more...
Genre: h#
FEN: 8/7p/6pr/1P1BP2b/2p4K/7R/P6P/Bk6
Input: Andreas Mokosch, 1997-07-23
Last update: hpr, 1999-10-26 more...
1. Lf5 Sf3 2. Sd3 Sg5 3. Lg7 Sf7#
Cook: NL 1. Sd3+ Sf5 2. Th1 Sxh6 3. Lg7 Sf7#
Cook: NL 1. Sd3+ Sf5 2. Th1 Sxh6 3. Lg7 Sf7#
Verst-4
Adrian Storisteanu: Possible fix: wSh4->b4, +bPh4 (2+10) -- 1.Bf5 Sc6 2.Sd3 Sd8 3.Bg7 Sf7#. (2015-08-26)
Yuri Bilokin: possibly bBb1-g6 6nk/7q/6bp/3Kn2r/3b3N/8/8/3r4 (2+9) (2022-12-19)
A.Buchanan: As well as bBb1-g6, one can shift bPh6-h7, i.e. removing bQ which serves no purpose (2022-12-20)
Yuri Bilokin: After correction, you can improve the efficiency (bPh6-h7), you can improve the sparsity (wNh4-b2). (2022-12-21)
A.Buchanan: I also wondered about shifting wSh4, but I thought it's good to have a knight start near to its destination square, because there are more convoluted paths for dual elimination, rather than pulling the line more taut. b4, b8 & e1 also work - it becomes a matter of taste. On balance I like Sh4 because it suggests 1. ... Sf5? unpinning the bS (2022-12-21)
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Adrian Storisteanu: Possible fix: wSh4->b4, +bPh4 (2+10) -- 1.Bf5 Sc6 2.Sd3 Sd8 3.Bg7 Sf7#. (2015-08-26)
Yuri Bilokin: possibly bBb1-g6 6nk/7q/6bp/3Kn2r/3b3N/8/8/3r4 (2+9) (2022-12-19)
A.Buchanan: As well as bBb1-g6, one can shift bPh6-h7, i.e. removing bQ which serves no purpose (2022-12-20)
Yuri Bilokin: After correction, you can improve the efficiency (bPh6-h7), you can improve the sparsity (wNh4-b2). (2022-12-21)
A.Buchanan: I also wondered about shifting wSh4, but I thought it's good to have a knight start near to its destination square, because there are more convoluted paths for dual elimination, rather than pulling the line more taut. b4, b8 & e1 also work - it becomes a matter of taste. On balance I like Sh4 because it suggests 1. ... Sf5? unpinning the bS (2022-12-21)
more ...
comment
Genre: h#
FEN: 6nk/7q/7p/3Kn2r/3b3N/8/8/1b1r4
Input: HBae, 1997-10-18
Last update: A.Buchanan, 2022-12-20 more...
1. 0-0-0+ Ld3 2. Ld7 La6#
NL:
1. Dg8/Db7/Dc7 Dxe6+ 2. Te7 Dg8#
1. Df8 Dd4/Dc7/Dd6/Dd5 2. Lf7 Dd7#
NL:
1. Dg8/Db7/Dc7 Dxe6+ 2. Te7 Dg8#
1. Df8 Dd4/Dc7/Dd6/Dd5 2. Lf7 Dd7#
Rochade
F135
Verst-4
Yuri Bilokin: correction bRh7-f7(-bQf7), bBa1-b6, -bPa7, +bSf4, +bSh6 r3k3/5r1B/1b2b2n/4Q3/5n2/8/8/3K4 (3+7) (2022-08-28)
comment
F135
Verst-4
Yuri Bilokin: correction bRh7-f7(-bQf7), bBa1-b6, -bPa7, +bSf4, +bSh6 r3k3/5r1B/1b2b2n/4Q3/5n2/8/8/3K4 (3+7) (2022-08-28)
comment
1. Tb3 a3 2. Kxa3 Dxa1#
NL:
1. De1 Dxd5 2. d2 Dxc4#
NL:
1. De1 Dxd5 2. d2 Dxc4#
klären Quelle ?
Bath+Welts Chronicle+Herald ?
Yuri Bilokin: correction wKg4-f4, -wPa6, bBd3(-bPd3), bNa7-c6, -bNa1, -bPd5 8/8/2n5/r7/kqpQ1K2/r2b4/P7/8 (3+7) (2022-12-15)
A.Buchanan: Any acceptable correction must surely retain the thematic symmetry? (2022-12-16)
A.Buchanan: Bath & Wells (not Welts) are two small neighbouring cities in the West of England which are kind of paired together. E.g. there is a Bishop of B&W (which it occurs for me might stand for Black & White, suggesting a thematic problem with a neutral bishop). (2022-12-16)
milan: +wPb3b5 1.T×b3 a3 2. K×a3 D×a1# simply correction M.Frelih (2022-12-18)
comment
Bath+Welts Chronicle+Herald ?
Yuri Bilokin: correction wKg4-f4, -wPa6, bBd3(-bPd3), bNa7-c6, -bNa1, -bPd5 8/8/2n5/r7/kqpQ1K2/r2b4/P7/8 (3+7) (2022-12-15)
A.Buchanan: Any acceptable correction must surely retain the thematic symmetry? (2022-12-16)
A.Buchanan: Bath & Wells (not Welts) are two small neighbouring cities in the West of England which are kind of paired together. E.g. there is a Bishop of B&W (which it occurs for me might stand for Black & White, suggesting a thematic problem with a neutral bishop). (2022-12-16)
milan: +wPb3b5 1.T×b3 a3 2. K×a3 D×a1# simply correction M.Frelih (2022-12-18)
comment
Keywords: Symmetrical position
Genre: h#
FEN: 8/n7/P7/r2p4/kqpQ2K1/r2p4/P7/n7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...
Genre: h#
FEN: 8/n7/P7/r2p4/kqpQ2K1/r2p4/P7/n7
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...
1. f1=L Sa2 2. Lxe2+ Kxe2 3. d1=T Sxc3#
Cook: NL 1. Td3 Sf4 2. Ld4 Sb3 3. Te3 Sxd2#
Cook: NL 1. Td3 Sf4 2. Ld4 Sb3 3. Te3 Sxd2#
Doppelveröffentlichung
Adrian Storisteanu: Possible fix: -bPe5, +wPf4 (7+6). (2015-11-27)
Yuri Bilokin: possibly wNc1-a7 8/N7/8/4p3/p2rk1P1/P1b3P1/3pNp2/3K4 (6+7) (2022-12-19)
HBae: Bei dem Korrekturvorschlag von Adrian wäre auch -wPa3 +bPa3 möglich, C+ Popeye v4.37 (2022-12-20)
Yuri Bilokin: Yes, it's better
There is no need to strain yourself by dragging the white knight to the a7 square :) (2022-12-20)
comment
Adrian Storisteanu: Possible fix: -bPe5, +wPf4 (7+6). (2015-11-27)
Yuri Bilokin: possibly wNc1-a7 8/N7/8/4p3/p2rk1P1/P1b3P1/3pNp2/3K4 (6+7) (2022-12-19)
HBae: Bei dem Korrekturvorschlag von Adrian wäre auch -wPa3 +bPa3 möglich, C+ Popeye v4.37 (2022-12-20)
Yuri Bilokin: Yes, it's better
There is no need to strain yourself by dragging the white knight to the a7 square :) (2022-12-20)
comment
Keywords: Sacrifice of white pieces, Tempo Move (b(t))
Genre: h#
FEN: 8/8/8/4p3/p2rk1P1/P1b3P1/3pNp2/2NK4
Reprints: 3605 Falkirk Herald 09/05/1934
Input: Markus Manhart, 1998-02-10
Last update: Alfred Pfeiffer, 2015-11-30 more...
Genre: h#
FEN: 8/8/8/4p3/p2rk1P1/P1b3P1/3pNp2/2NK4
Reprints: 3605 Falkirk Herald 09/05/1934
Input: Markus Manhart, 1998-02-10
Last update: Alfred Pfeiffer, 2015-11-30 more...
14 - P0531421
Thomas R. Dawson
1796 The Problemist Fairy Chess Supplement 02/1935
(4+4) cooked
h#2
b) sTd7 nach e7, sTh3 nach h4
Thomas R. Dawson
1796 The Problemist Fairy Chess Supplement 02/1935
(4+4) cooked
h#2
b) sTd7 nach e7, sTh3 nach h4
a) 1. Kg5 Tg2+ 2. Kh4 Tg4#
b) 1. Kxg7 Tg2+ 2. Kf8 Tg8#
NL:
a) 1. Kg5 Tg2+ 2. Kh4 Shf5#
b) 1. Kxg7 Tg2+ 2. Kf8 Tg8#
NL:
a) 1. Kg5 Tg2+ 2. Kh4 Shf5#
klären Monat
Alfred Pfeiffer: No.1796 ist aus 04/1935 (vgl. P0003272) (2011-01-11)
Yuri Bilokin: possibly bBe4(-bNe4), +bPd3 8/3r2N1/6kN/8/4b3/3p3r/2R5/1K6 (4+5) (2022-12-16)
comment
Alfred Pfeiffer: No.1796 ist aus 04/1935 (vgl. P0003272) (2011-01-11)
Yuri Bilokin: possibly bBe4(-bNe4), +bPd3 8/3r2N1/6kN/8/4b3/3p3r/2R5/1K6 (4+5) (2022-12-16)
comment
Keywords: Sacrifice of white pieces, Symmetrical position, Aristocrat, Aristocrat
Genre: h#
FEN: 8/3r2N1/6kN/8/4n3/7r/2R5/1K6
Reprints: 1796 The Problemist Fairy Chess Supplement 04/1935
Input: Ralf Krätschmer, 1998-03-30
Last update: Arnold Beine, 2022-12-17 more...
Genre: h#
FEN: 8/3r2N1/6kN/8/4n3/7r/2R5/1K6
Reprints: 1796 The Problemist Fairy Chess Supplement 04/1935
Input: Ralf Krätschmer, 1998-03-30
Last update: Arnold Beine, 2022-12-17 more...
15 - P0534722
Thomas R. Dawson
2828v Stratford Express 15/12/1934
(5+7)
h#2
b) alles eine Reihe tiefer
Thomas R. Dawson
2828v Stratford Express 15/12/1934
(5+7)
h#2
b) alles eine Reihe tiefer
a) 1. g2 Ta6 2. g1=T Tf2#
b) 1. Ke5 0-0-0 2. Ke4/Lf6 Te1#
NL in a)
1. Kf8 Sf4 /Sg7 2. Sf7 Se6#
1. Kf8 Tf2+ 2. Lf7 Ta8#
b) 1. Ke5 0-0-0 2. Ke4/Lf6 Te1#
NL in a)
1. Kf8 Sf4 /Sg7 2. Sf7 Se6#
1. Kf8 Tf2+ 2. Lf7 Ta8#
Dual in b)
Yuri Bilokin: possibly bRe8(-bBe8), +bNc7, +bPg6 4r1rn/2n1pk2/6p1/7N/6P1/6pp/R3K2R/8 (5+9) h#2 b) alles eine Reihe tiefer
a) 1.g2 Ra6 2.g1=R Rf2#
b) 1.Ke5 0-0-0 2.Ke4 Rhe1# (MM) (2022-12-16)
comment
Yuri Bilokin: possibly bRe8(-bBe8), +bNc7, +bPg6 4r1rn/2n1pk2/6p1/7N/6P1/6pp/R3K2R/8 (5+9) h#2 b) alles eine Reihe tiefer
a) 1.g2 Ra6 2.g1=R Rf2#
b) 1.Ke5 0-0-0 2.Ke4 Rhe1# (MM) (2022-12-16)
comment
*) 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...
a) 1. La7 Ta1 2. Db8 Sb6#
b) 1. Da1 Tg8 2. Da7 Sc7#
NL in b):
1. Dd4 Ta1+ 2. Da7 Sb6#
1. Dd4 Tg8 2. Da7 Sc7#
b) 1. Da1 Tg8 2. Da7 Sc7#
NL in b):
1. Dd4 Ta1+ 2. Da7 Sb6#
1. Dd4 Tg8 2. Da7 Sc7#
Yuri Bilokin: redaction Thomas R. Dawson & Yuri Bilokin wRg1-h1, bQg8-h8, +bPc5 kb5q/1n1p4/3p4/2pN4/8/1K6/8/7R (3+7) h#2 2.1…
1.Ba7 Ra1 2.Qb8 Sb6# (MM)
1.Qa1 Rh8 2.Qa7 Sc7# (MM)
Blocking piece replacement (bB-bQ)
Corner-to-corner (bQ). Corner-to-corner (wR) × 2
Echo mates (mirrored diagonally, 0, 0). JT Onkoud 50 theme
Place exchange in the final positions (black, qb). Transferred pin (bB)
Model mate × 2. Echo. Pin-mate × 2. Smothered mate × 2 (2022-12-16)
comment
1.Ba7 Ra1 2.Qb8 Sb6# (MM)
1.Qa1 Rh8 2.Qa7 Sc7# (MM)
Blocking piece replacement (bB-bQ)
Corner-to-corner (bQ). Corner-to-corner (wR) × 2
Echo mates (mirrored diagonally, 0, 0). JT Onkoud 50 theme
Place exchange in the final positions (black, qb). Transferred pin (bB)
Model mate × 2. Echo. Pin-mate × 2. Smothered mate × 2 (2022-12-16)
comment
Keywords: Fesselungsspiel (222 202 000)
Genre: h#
FEN: kb4q1/1n1p4/3p4/3N4/8/1K6/8/6R1
Input: Markus Manhart, 1998-05-09
Last update: hpr, 1999-11-11 more...
Genre: h#
FEN: kb4q1/1n1p4/3p4/3N4/8/1K6/8/6R1
Input: Markus Manhart, 1998-05-09
Last update: hpr, 1999-11-11 more...
18 - P0547948
Thomas R. Dawson
831 Queenstown Daily Reporter 05/09/1939
(4+3) cooked
h#2
b) wKe7 nach g1
Thomas R. Dawson
831 Queenstown Daily Reporter 05/09/1939
(4+3) cooked
h#2
b) wKe7 nach g1
a) 1. Td4 Le6 2. Ke5 Sd3#
b) 1. Td3 Ld1 2. Ke3 Sd5#
NL:
a) 1. Td1 Dg3+ 2. Kf5 Le6#
1. Td1 Df3+ 2. Ke5 Sc6#
b) 1. Td3 Ld1 2. Ke3 Sd5#
NL:
a) 1. Td1 Dg3+ 2. Kf5 Le6#
1. Td1 Df3+ 2. Ke5 Sc6#
Yuri Bilokin: posibly b1=a1, then wKd7-f1, +wPe5, +bPc6, +bPc7, +bPe6
8/2p5/2p1p3/4P3/N2nk3/BQ6/2r5/5K2 (5+6) h#2 2.1…
1.Rc3 Bc1 2.Kd3 Sc5# (MM)
1.Rc4 Bd6 2.Kd5 Sc3# (MM)
Analogy (complete)
Anticipatory self-pin × 2
Brochettes theme
Transferred pin (bR)
Model mate × 2
Pin-mate × 2 (2022-12-16)
comment
8/2p5/2p1p3/4P3/N2nk3/BQ6/2r5/5K2 (5+6) h#2 2.1…
1.Rc3 Bc1 2.Kd3 Sc5# (MM)
1.Rc4 Bd6 2.Kd5 Sc3# (MM)
Analogy (complete)
Anticipatory self-pin × 2
Brochettes theme
Transferred pin (bR)
Model mate × 2
Pin-mate × 2 (2022-12-16)
comment
Keywords: Fesselungsspiel (222 202 000)
Genre: h#
FEN: 8/4K3/8/8/1N2nk2/1BQ5/3r4/8
Input: Markus Manhart, 1998-05-11
Last update: hpr, 1999-02-19 more...
Genre: h#
FEN: 8/4K3/8/8/1N2nk2/1BQ5/3r4/8
Input: Markus Manhart, 1998-05-11
Last update: hpr, 1999-02-19 more...
19 - P0552366
Thomas R. Dawson
Charles Masson Fox
3277v The Fairy Chess Review 08/1938
(5+5) cooked
h#2
b) wSf7 nach e5
Thomas R. Dawson
Charles Masson Fox
3277v The Fairy Chess Review 08/1938
(5+5) cooked
h#2
b) wSf7 nach e5
a) 1. Kxf7 Tf2+ 2. Ke8 Sg7#
b) 1. Kxe5 Kd2+ 2. Kd6 Kxe1#
Cook: NL
a) 1. Kg6 Tg2+ 2. Kh7 Tg7#
b) 1. Kxe5 Kd2+ 2. Kd6 Kxe1#
Cook: NL
a) 1. Kg6 Tg2+ 2. Kh7 Tg7#
Verstellung KT
Adrian Storisteanu: Possible fix: +bPh7 (5+6). (2015-08-23)
Yuri Bilokin: possibly b1=a1 bNh8 7n/3bN3/1p1Nk3/8/8/3K4/3R4/2Rn4 (5+5) h#2 b) wNe7-d5
a) 1.Kxe7 Re2+ 2.Kd8 Sb7# (MM)
b) 1.Kxd5 Kc2+ 2.Kc6 Kxd1# (MM) (2022-12-16)
comment
Adrian Storisteanu: Possible fix: +bPh7 (5+6). (2015-08-23)
Yuri Bilokin: possibly b1=a1 bNh8 7n/3bN3/1p1Nk3/8/8/3K4/3R4/2Rn4 (5+5) h#2 b) wNe7-d5
a) 1.Kxe7 Re2+ 2.Kd8 Sb7# (MM)
b) 1.Kxd5 Kc2+ 2.Kc6 Kxd1# (MM) (2022-12-16)
comment
Keywords: Sacrifice of white pieces, Line closure
Genre: h#
FEN: n7/4bN2/2p1Nk2/8/8/4K3/4R3/3Rn3
Input: Hans-Jürgen Schäfer, 1998-01-20
Last update: Alfred Pfeiffer, 2015-08-24 more...
Genre: h#
FEN: n7/4bN2/2p1Nk2/8/8/4K3/4R3/3Rn3
Input: Hans-Jürgen Schäfer, 1998-01-20
Last update: Alfred Pfeiffer, 2015-08-24 more...
20 - P0556423
Thomas R. Dawson
Israel Problem Association 1948
3. Lob
Seidemann Memorial
(4+6) cooked
h#2
b) alles eine Reihe tiefer
Thomas R. Dawson
Israel Problem Association 1948
3. Lob
Seidemann Memorial
(4+6) cooked
h#2
b) alles eine Reihe tiefer
a) 1. c5 Lf4 2. Te4 Td8#
b) 1. Ld1 Txe2 2. Ld4 La6#
NL:
b) 1. Td2 Te1 2. Ld4 La6#
b) 1. Ld1 Txe2 2. Ld4 La6#
NL:
b) 1. Td2 Te1 2. Ld4 La6#
Yuri Bilokin: possibly bNb3(-wPb3), bPc3(-bBc3), +bPc4, +bPf4 1B2R3/2p5/8/8/2pk1p2/1np1r3/2r3bK/8 (3+9) h#2 b) alles eine Reihe tiefer
a) 1.c5 Bxf4 2.Re4 Rd8# (MM)
b) 1.Sd1 Rxe2 2.Bd4 Ba6# (2022-12-16)
milan: a) -wPb3+bPa7wBf1
b)all pieces to the left
1.Ra6 B×b7 2.Bc5 Ba6#
1.Kc5 Rd5+ 2.Ka4 Ra5#
1.b5 Be4 2.Rd4 Rc8#
i'ts look like battle of the bishops
M.Frelih (2022-12-18)
Yuri Bilokin: Very bad. In a problem that has nothing to do with the author's intention, there is still an extra white bishop in the solution 1.Kc5 Rd5+ 2.Ka4 Ra5# (2022-12-19)
milan: +wBa6bPa5-wPb3 1.c5 Bf4 2.Re4 Rd8# 1.Rb6 B×c7 2.Bd5 B×b6#
your solution b) not C+... bRb5? M.Frelih (2022-12-19)
Yuri Bilokin: Sorry for your misunderstanding. Everything is fine in my edition. Twin FEN Code a) You see Twin FEN Code b) Showing 8/1B2R3/2p5/8/8/2pk1p2/1np1r3/2r3bK, solution
1.Sd1 Rxe2 2.Bd4 Ba6# (2022-12-20)
comment
a) 1.c5 Bxf4 2.Re4 Rd8# (MM)
b) 1.Sd1 Rxe2 2.Bd4 Ba6# (2022-12-16)
milan: a) -wPb3+bPa7wBf1
b)all pieces to the left
1.Ra6 B×b7 2.Bc5 Ba6#
1.Kc5 Rd5+ 2.Ka4 Ra5#
1.b5 Be4 2.Rd4 Rc8#
i'ts look like battle of the bishops
M.Frelih (2022-12-18)
Yuri Bilokin: Very bad. In a problem that has nothing to do with the author's intention, there is still an extra white bishop in the solution 1.Kc5 Rd5+ 2.Ka4 Ra5# (2022-12-19)
milan: +wBa6bPa5-wPb3 1.c5 Bf4 2.Re4 Rd8# 1.Rb6 B×c7 2.Bd5 B×b6#
your solution b) not C+... bRb5? M.Frelih (2022-12-19)
Yuri Bilokin: Sorry for your misunderstanding. Everything is fine in my edition. Twin FEN Code a) You see Twin FEN Code b) Showing 8/1B2R3/2p5/8/8/2pk1p2/1np1r3/2r3bK, solution
1.Sd1 Rxe2 2.Bd4 Ba6# (2022-12-20)
comment
Genre: h#
FEN: 1B2R3/2p5/8/8/3k4/1Pb1r3/1r4bK/8
Input: Franz Pachl, 1998-08-31
Last update: hpr, 1999-04-04 more...
21 - P0559805
Thomas R. Dawson
35 Schachkongress Teplitz-Schönau im Oktober 1922 , p. 505, 1923
(3+9) cooked
h#3
Thomas R. Dawson
35 Schachkongress Teplitz-Schönau im Oktober 1922 , p. 505, 1923
(3+9) cooked
h#3
1. Tc6 Tf4 2. Tce6 Tcc4 3. T2e5 Tfd4#
NL:
1. Kd4 Txc4+ 2. Kd3 Tb4 3. Lg3 Ta3#
uvm
NL:
1. Kd4 Txc4+ 2. Kd3 Tb4 3. Lg3 Ta3#
uvm
Yuri Bilokin: correction wKd1-h1, bBe1-a7, bBf1-a2, bPg2-h2, +bNb8, +bNe7, +bPa6, + bPd7, +bPf6 1nR5/b2pn3/pp3p2/3k4/R1r3pq/8/b3r2p/7K (3+14) (2023-05-02)
comment
comment
Genre: h#
FEN: 2R5/8/1p6/3k4/R1r3pq/8/4r1p1/3Kbb2
Input: hpr, 1999-02-17
Last update: Rainer Staudte, 2022-04-18 more...
a) 1. Sec6 Lh5 2. Tg4 Lg6#
b) 1. Sdc6 Ld5 2. Le4 Le6#
NL in b):
1. Lh3 Le2 2. Lg4 Ld3#
b) 1. Sdc6 Ld5 2. Le4 Le6#
NL in b):
1. Lh3 Le2 2. Lg4 Ld3#
Genre: h#
FEN: 8/2B1nK2/1r6/5kp1/3n4/5B2/6r1/8
Input: Markus Manhart, 1998-10-20
Last update: hpr, 1999-03-10 more...
*) 1. ... Tc3 2. Dxc2 Dxh1#
1) 1. Dxe2 Kb3 2. Kd1 Tf1#
NL:
*) 1. ... Dxf5 2. Df1 Txf1#
1. Dg1 Dxf5 2. Df1 Txf1#
1) 1. Dxe2 Kb3 2. Kd1 Tf1#
NL:
*) 1. ... Dxf5 2. Df1 Txf1#
1. Dg1 Dxf5 2. Df1 Txf1#
Felber, Volker: Original mit wT auf h3 (auch NL).
Heft 84, Dezember 1934, Seite 193, II. (2011-02-10)
Yuri Bilokin: possibly wRf3-h3, +wPb3 8/3p1p2/3pbp2/3r1p1Q/2K2P2/1P5R/1bPPP3/1Nkq3n (9+11) h#2*
1...Rc3 2.Qxc2 Qxh1# (MM)
1.Qxc2+ Kb4 2.Kd1 Rxh1# (MM)
Bi-valve (wR-wQ-bQ)
Check prevention (W-W)
Hideaway (bQ, self-pinning)
Play on the same square (W2, 2)
Model mate × 2. Pin-mate. Mates on the same square × 2 (2022-12-17)
comment
Heft 84, Dezember 1934, Seite 193, II. (2011-02-10)
Yuri Bilokin: possibly wRf3-h3, +wPb3 8/3p1p2/3pbp2/3r1p1Q/2K2P2/1P5R/1bPPP3/1Nkq3n (9+11) h#2*
1...Rc3 2.Qxc2 Qxh1# (MM)
1.Qxc2+ Kb4 2.Kd1 Rxh1# (MM)
Bi-valve (wR-wQ-bQ)
Check prevention (W-W)
Hideaway (bQ, self-pinning)
Play on the same square (W2, 2)
Model mate × 2. Pin-mate. Mates on the same square × 2 (2022-12-17)
comment
Genre: h#
FEN: 8/3p1p2/3pbp2/3r1p1Q/2K2P2/5R2/1bPPP3/1Nkq3n
Input: Felber, Volker, 1999-12-23
Last update: hpr, 2000-01-21 more...
1. ... Ld2 2. Sa4 Lxf4 3. Ka5 Ld6 4. Lb5 Lb4#
NL:
1. ... Le1 2. Te6 Tg2 3. Sa4 Td2 4. Ka5 Txd5#
NL:
1. ... Le1 2. Te6 Tg2 3. Sa4 Td2 4. Ka5 Txd5#
Korrektur Hilmar Ebert: -sBd5, sDc8 nach f5
Jakob Leck: vgl. P1071030 (2019-12-27)
Yuri Bilokin: possibly bQc8-e6, -bPd5, -bPf3 8/1p1b4/pp2qb2/1kn5/1B3pR1/7K/4r3/1n6 (3+11) (2022-12-15)
comment
Jakob Leck: vgl. P1071030 (2019-12-27)
Yuri Bilokin: possibly bQc8-e6, -bPd5, -bPf3 8/1p1b4/pp2qb2/1kn5/1B3pR1/7K/4r3/1n6 (3+11) (2022-12-15)
comment
Genre: h#
FEN: 2q5/1p1b4/pp3b2/1knp4/1B3pR1/5p1K/4r3/1n6
Reprints: 2244 Bolton Football Field 01/06/1912
Input: hpr, 2001-12-21
Last update: hpr, 2001-12-21 more...
*) 1. ... Sf5#
1) 1. Lf6 Kxh2 2. Le7 Sc4#
1) 1. Ke7 Dg8 2. Kf6 Sd5#
1) 1. Lf6 Kxh2 2. Le7 Sc4#
1) 1. Ke7 Dg8 2. Kf6 Sd5#
Korrektur John NIemann: wKh1 nach b1, sBh2 nach b2, sBh3 nach b3
Yuri Bilokin: Der Autor könnte eine weitere Lösung sparen, indem er den Inhalt des Problems erweitert: Allowing tempo (B-W)
Apparent mate
BK moves only
Echo mates (mirrored vertically, 2, 0)
Tempo move (wK, waiting)
Zalokotsky theme (bB/bK, reduced, 2)
Model mate × 3
Echo (2022-12-17)
comment
Yuri Bilokin: Der Autor könnte eine weitere Lösung sparen, indem er den Inhalt des Problems erweitert: Allowing tempo (B-W)
Apparent mate
BK moves only
Echo mates (mirrored vertically, 2, 0)
Tempo move (wK, waiting)
Zalokotsky theme (bB/bK, reduced, 2)
Model mate × 3
Echo (2022-12-17)
comment
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.70 (2048 KB))
FEN: 2Q5/8/3k4/4b3/4P3/4N2p/7p/7K
Input: hpr, 2001-12-25
Last update: hpr, 2001-12-25 more...
1. b8=S? droht 2. Sc6#
1. ... Gxa6!
1. bxc6ep! Gxd4,Gxb6,~ 2. Lb5#
R: 1. c7-c5 2. Gd7-d5+ Gb8-d6
'The Problemist', p. 241, 09/1993: "The solution to this #2 with Grasshoppers is 1.bxc6
en passant. lf Black's last move had been 1...c6, then White's previous move would have been the illegal G(d7)-d5+.
Cook: 1. Sc4+ Kxa4 2. Sab6#
1. ... Gxa6!
1. bxc6ep! Gxd4,Gxb6,~ 2. Lb5#
R: 1. c7-c5 2. Gd7-d5+ Gb8-d6
'The Problemist', p. 241, 09/1993: "The solution to this #2 with Grasshoppers is 1.bxc6
en passant. lf Black's last move had been 1...c6, then White's previous move would have been the illegal G(d7)-d5+.
Cook: 1. Sc4+ Kxa4 2. Sab6#
No. 2251 HN
A.Buchanan: Diagram error? Solution typo? (2023-01-06)
Mario Richter: Diagram error corrected (2023-01-07)
Ulrich Voigt: NL: 1. Sc4+ Kxa4 2. Sab6# (2023-01-08)
Mario Richter: Vielleicht sind Dawson und alle, die diese Aufgabe unkritisch nachgedruckt haben, einer typischen Halluzination erlegen: im Geiste nimmt man den Zug c7-c5 zurück, der erst den ep-Key ermöglicht, und meint dann, daß die NL: 1. Sc4+ Kxa4 2. Sab6 an 2. ... c7xb6 scheitert ... (2023-01-09)
A.Buchanan: Easily repaired e.g. by replacing wSa8 with wLa7 (2023-01-09)
comment
A.Buchanan: Diagram error? Solution typo? (2023-01-06)
Mario Richter: Diagram error corrected (2023-01-07)
Ulrich Voigt: NL: 1. Sc4+ Kxa4 2. Sab6# (2023-01-08)
Mario Richter: Vielleicht sind Dawson und alle, die diese Aufgabe unkritisch nachgedruckt haben, einer typischen Halluzination erlegen: im Geiste nimmt man den Zug c7-c5 zurück, der erst den ep-Key ermöglicht, und meint dann, daß die NL: 1. Sc4+ Kxa4 2. Sab6 an 2. ... c7xb6 scheitert ... (2023-01-09)
A.Buchanan: Easily repaired e.g. by replacing wSa8 with wLa7 (2023-01-09)
comment
Keywords: En passant as key
Pieces: = Grasshopper (G)
Genre: Retro, Fairies
FEN: N2K4/1P6/PN1*2q4/kPp*2Q4/Pp1R4/p2B4/8/8
Reprints: The Problemist , p. 241, 09/1993
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2023-01-09 more...
Pieces: = Grasshopper (G)
Genre: Retro, Fairies
FEN: N2K4/1P6/PN1*2q4/kPp*2Q4/Pp1R4/p2B4/8/8
Reprints: The Problemist , p. 241, 09/1993
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2023-01-09 more...
BS Problemid: 6433
Authors: Dawson, Thomas Rayner
Sources:
Years: 1947
Hans-Jürgen Manthey: in Schach-Express seite 78 5/1947 steht:
Manchester Guardian 1947 (2020-05-30)
Henrik Juel: C+ by Popeye 4.61
1.Sg1 thr. 2.Sg3#
1... Dd6/Dc3/Dc7 2.Lxe6/Sxd4/Lh7+
Holzhausen tripled (2020-05-30)
Hans-Jürgen Manthey: Nachdruck SExpress 1.Jun 1947 S.78 Nr.58 (2022-10-20)
comment
Manchester Guardian 1947 (2020-05-30)
Henrik Juel: C+ by Popeye 4.61
1.Sg1 thr. 2.Sg3#
1... Dd6/Dc3/Dc7 2.Lxe6/Sxd4/Lh7+
Holzhausen tripled (2020-05-30)
Hans-Jürgen Manthey: Nachdruck SExpress 1.Jun 1947 S.78 Nr.58 (2022-10-20)
comment
Keywords: Brian Stephenson Collection (6433)
Genre: 3#
FEN: 6B1/r7/r3p2n/2qp1kBK/3p4/1N6/5N2/b3R3
Input: Brian Stephenson, 2004-08-12
Genre: 3#
FEN: 6B1/r7/r3p2n/2qp1kBK/3p4/1N6/5N2/b3R3
Input: Brian Stephenson, 2004-08-12
1. Sc7! droht 2. Ld5+
1. ... Sge3 2. Sb5
1. ... Sf4 2. Sa6
1. ... Sxh4 2. Se6
1. ... Sge3 2. Sb5
1. ... Sf4 2. Sa6
1. ... Sxh4 2. Se6
Keywords: Brian Stephenson Collection (16743)
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: K3N3/1N1p1B2/2k5/B7/1pP4P/5b2/2n3n1/4b2q
Reprints: 28 Valves and Bi-Valves , p. 40, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-17 more...
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: K3N3/1N1p1B2/2k5/B7/1pP4P/5b2/2n3n1/4b2q
Reprints: 28 Valves and Bi-Valves , p. 40, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-17 more...
1. Sf6! droht 2. Sxd5 droht 3. d7#/Se7#/Sb6#
2. ... Lh4 3. d7#/Sb6#
2. ... Lh3 3. Se7#/Sb6#
2. ... d3 3. d7#/Se7#
1. ... Td3,Te3 2. Sd7 droht 3. Sb6#
1. ... Tg3 2. Se8 droht 3. d7#
1. ... Th3 2. Sg8 droht 3. Se7#
2. ... Lh4 3. d7#/Sb6#
2. ... Lh3 3. Se7#/Sb6#
2. ... d3 3. d7#/Se7#
1. ... Td3,Te3 2. Sd7 droht 3. Sb6#
1. ... Tg3 2. Se8 droht 3. d7#
1. ... Th3 2. Sg8 droht 3. Se7#
A.Buchanan: I guess the theme is representation of all combinations of the three mates. But I don't see the purpose of bS & bD. Why are they needed, please? (2024-03-17)
more ...
comment
more ...
comment
Keywords: Brian Stephenson Collection (16865)
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 2k2K2/2P4N/2PP2Pp/3pp3/3p1p2/2p2r2/5bb1/2n3q1
Reprints: 19 Valves and Bi-Valves , p. 31, 1930
Input: Brian Stephenson, 2004-08-12
Last update: A.Buchanan, 2024-03-17 more...
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 2k2K2/2P4N/2PP2Pp/3pp3/3p1p2/2p2r2/5bb1/2n3q1
Reprints: 19 Valves and Bi-Valves , p. 31, 1930
Input: Brian Stephenson, 2004-08-12
Last update: A.Buchanan, 2024-03-17 more...
1. Td1? Dxh4! 1. Kd1? c3!
1. 0-0-0! Dxh4 2. Le5#
1. ... c3 2. dxc3#
1. ... cxd3 2. Ta4#
1. 0-0-0! Dxh4 2. Le5#
1. ... c3 2. dxc3#
1. ... cxd3 2. Ta4#
Keywords: Brian Stephenson Collection (21742), Castling key, Knight sacrifice, Pawn mate, Line opening, Zugzwang-Goal
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/p5p1/P2QPqP1/3P1P2/2pk3N/R2P2B1/3P2Nn/R3K1b1
Reprints: 73 Versunkene Schätze , p. 37, 1998
A The Problemist 25-3, p. 125, 05/2015
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-10-11 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/p5p1/P2QPqP1/3P1P2/2pk3N/R2P2B1/3P2Nn/R3K1b1
Reprints: 73 Versunkene Schätze , p. 37, 1998
A The Problemist 25-3, p. 125, 05/2015
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-10-11 more...
BS Problemid: 40893
Authors: Dawson, Thomas Rayner
Sources: Systematic Terminology 1984
Years: 1937
SCHRECKE: C+, popeye 4.87
1. Sxd7! droht 2. Sf6#
1. ... Taxd5 2. S3c5#
1. ... Thxd5 2. De6#
1. ... Dxd5 2. Tc4#
1. ... Tf5 2. Df3#
1. ... Lxd3 2. exd3#
1. ... Sxg1,Sf2 2. Dxf4# (2023-08-21)
comment
1. Sxd7! droht 2. Sf6#
1. ... Taxd5 2. S3c5#
1. ... Thxd5 2. De6#
1. ... Dxd5 2. Tc4#
1. ... Tf5 2. Df3#
1. ... Lxd3 2. exd3#
1. ... Sxg1,Sf2 2. Dxf4# (2023-08-21)
comment
Keywords: Brian Stephenson Collection (40893)
Genre: 2#
FEN: 3K4/1Bpp3p/p6p/r2PN2r/4kpQp/2RN3n/q1b1P3/6B1
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-08-19 more...
Genre: 2#
FEN: 3K4/1Bpp3p/p6p/r2PN2r/4kpQp/2RN3n/q1b1P3/6B1
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-08-19 more...
1. ... De5 2. Kxd3 Dd5+ 3. Kxe3 De4#
NL:
1. ... Dh7 2. Td1 Dh1 3. Kb1 Dxd1#
1. ... Dd5 2. Sxc6 Dxb5 3. Kc3 Dc4#
NL:
1. ... Dh7 2. Td1 Dh1 3. Kb1 Dxd1#
1. ... Dd5 2. Sxc6 Dxb5 3. Kc3 Dc4#
Yuri Bilokin: correction wKa3-g1, wPc6-d5, bNd4-h2, bPb5-c4, -bBa1, -bPa4, -bNa5, -bPc7, - bPf2 4r3/4q3/4p3/3P4/2p1QP2/3PPP2/2kr3n/6K1 (7+7) h#3 0.1…
1...Qe5 2.Kxd3 Qf5+ 3.Kxe3 Qe4# (MM)
Areal cycle (wQ, captureless, 3) (2022-12-20)
comment
1...Qe5 2.Kxd3 Qf5+ 3.Kxe3 Qe4# (MM)
Areal cycle (wQ, captureless, 3) (2022-12-20)
comment
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.75 (2048 KB))
FEN: 4r3/2p1q3/2P1p3/np6/pn2QP2/K2PPP2/2kr1p2/b7
Input: hpr, 2004-09-28
Last update: hpr, 2004-09-28 more...
1. ... Sf5 2. Ke4 Sxd4 3. Tf4 Sf5 4. d5 Sg3#
NL:
1. ... Sf1 2. d3 Ka3 3. Kc4 Ka4 4. c5 Sxe3#
1. ... Sh5 2. Ke4 Kb3 3. d3 Kc4 4. Tf4 Sg3#
NL:
1. ... Sf1 2. d3 Ka3 3. Kc4 Ka4 4. c5 Sxe3#
1. ... Sh5 2. Ke4 Kb3 3. d3 Kc4 4. Tf4 Sg3#
Yuri Bilokin: correction wKa2-g1, wBb2-a1, bPc7-f5, bRd6(-bPd6), bRf6-f7 8/5r2/3r4/3k1p2/3p4/4p1N1/4P3/B6K (4+6)
1...Sxf5 2.Ke4 Sxd4 3.Rf4 Sf5 4.Rd5 Sg3# (MM)
Annihilation × 2
Crusader theme
Klasinc theme (wS-bR)
Long-trip (wS, 4)
Switchback (wS, with captures, 2)
Model mate × 1 (2022-11-21)
comment
1...Sxf5 2.Ke4 Sxd4 3.Rf4 Sf5 4.Rd5 Sg3# (MM)
Annihilation × 2
Crusader theme
Klasinc theme (wS-bR)
Long-trip (wS, 4)
Switchback (wS, with captures, 2)
Model mate × 1 (2022-11-21)
comment
Genre: h#
Computer test: (Popeye WINDOWS-32Bit-Version 3.75 (2048 KB))
FEN: 8/2p5/3p1r2/3k4/3p4/4p1N1/KB2P3/8
Input: hpr, 2004-09-28
Last update: hpr, 2004-09-28 more...
1. a5 2. a4 3. a3 4. a2 5. a1=T 6. Ta7 Sb6#
set play:Sc7#
set play:Sc7#
Yuri Bilokin: Maybe the black pawn on the field d6 is superfluous, with the last move White took the black piece on the field d5. (2022-12-21)
comment
comment
Keywords: Seriesmover
Genre: Fairies
Computer test: Popeye WINDOWS-32Bit V4.37 (374384 KB)
FEN: k1K5/p7/3p4/3N4/8/8/8/8
Input: Frank Müller, 2010-09-08
Last update: Erich Bartel, 2010-09-08 more...
Genre: Fairies
Computer test: Popeye WINDOWS-32Bit V4.37 (374384 KB)
FEN: k1K5/p7/3p4/3N4/8/8/8/8
Input: Frank Müller, 2010-09-08
Last update: Erich Bartel, 2010-09-08 more...
* 1. ... Kxe8 2. b8=D#
1. b8=S! Kxe8 2. Dg8#
1. b8=S! Kxe8 2. Dg8#
Keywords: Miniature Collection (0005846), Minimal, Miniature, Exchange of Promotions, under-promotion key, Promotion in the mating move (D im Satz)
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: K3Nk2/PP2p3/4Q3/8/8/8/8/8
Reprints: 3 Arbeiter-Schachzeitung (Chemnitz) 8, p. 233, 08/1928
23 Schachminiaturen Zweizüger , p. 16, 1965
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-01-12 more...
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: K3Nk2/PP2p3/4Q3/8/8/8/8/8
Reprints: 3 Arbeiter-Schachzeitung (Chemnitz) 8, p. 233, 08/1928
23 Schachminiaturen Zweizüger , p. 16, 1965
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-01-12 more...
36 - P1180459
Thomas R. Dawson
903 American Chess Bulletin 12/1913
Holiday Problem
(9+12)
s#25
Schlagzickzack
Thomas R. Dawson
903 American Chess Bulletin 12/1913
Holiday Problem
(9+12)
s#25
Schlagzickzack
paul: Every black move is unique, so the problem can be partially checked by Jacobi using:
forsyth K1k1s3/5p2/2S5/b7/1ppppppp/7r/PPPPPPP1/8
stipulation u#25
condition Blackcap Zigzag
Sol: 1.Ka7 2.Ka6 3.Kb5 4.Kc5 5.Kd5 6.Ke5 7.Kf5 8.Kg5 9.Kh6 10.Kh7 11.Kg8 12.Kf8 13.Ke7 14.Sd8 Bxd8+ 15.Kf8 16.Kg8 17.Kh7 18.Kh6 19.a4 bxa3 e.p. 20.b4 cxb3 e.p. 21.c4 dxc3 e.p. 22.d4 exd3 e.p. 23.e4 fxe3 e.p. 24.f4 gxf3 e.p. 25.g4 hxg3 e.p.# (2022-08-24)
Henrik Juel: Ka8 needs to go to e7 to avoid KxSd8
Later, White must use double pawn steps to avoid TxPa3 etc. (2022-08-24)
comment
forsyth K1k1s3/5p2/2S5/b7/1ppppppp/7r/PPPPPPP1/8
stipulation u#25
condition Blackcap Zigzag
Sol: 1.Ka7 2.Ka6 3.Kb5 4.Kc5 5.Kd5 6.Ke5 7.Kf5 8.Kg5 9.Kh6 10.Kh7 11.Kg8 12.Kf8 13.Ke7 14.Sd8 Bxd8+ 15.Kf8 16.Kg8 17.Kh7 18.Kh6 19.a4 bxa3 e.p. 20.b4 cxb3 e.p. 21.c4 dxc3 e.p. 22.d4 exd3 e.p. 23.e4 fxe3 e.p. 24.f4 gxf3 e.p. 25.g4 hxg3 e.p.# (2022-08-24)
Henrik Juel: Ka8 needs to go to e7 to avoid KxSd8
Later, White must use double pawn steps to avoid TxPa3 etc. (2022-08-24)
comment
Keywords: Blackcap zigzag
Genre: Fairies
FEN: K1k1n3/5p2/2N5/b7/1ppppppp/7r/PPPPPPP1/8
Input: Frank Müller, 2010-11-16
Last update: Frank Müller, 2010-11-17 more...
Genre: Fairies
FEN: K1k1n3/5p2/2N5/b7/1ppppppp/7r/PPPPPPP1/8
Input: Frank Müller, 2010-11-16
Last update: Frank Müller, 2010-11-17 more...
1. Tf8 Txa1 2. Lg8 Le8+ 3. Df7 Ta1xa6#
Cook: 1. Lxg4 Lf3,Tf1 2. De6,Kf5 Txf1,Lf3 3. Kf5,De6 Le4#
1. Tf4 Lf3,Tf1 2. Txg4 Tf1,Lf3 3. Kf5 Le4#
1. Te4 Txf1 2. Txg4 Lf3 3. Kf5 Le4#
1. Da4 Lf3,Txf1 2. Dxg4 Txf1,Lf3 3. Kf5 Le4#
Cook: 1. Lxg4 Lf3,Tf1 2. De6,Kf5 Txf1,Lf3 3. Kf5,De6 Le4#
1. Tf4 Lf3,Tf1 2. Txg4 Tf1,Lf3 3. Kf5 Le4#
1. Te4 Txf1 2. Txg4 Lf3 3. Kf5 Le4#
1. Da4 Lf3,Txf1 2. Dxg4 Txf1,Lf3 3. Kf5 Le4#
8 NL
Yuri Bilokin: Correction: wBc6-b5, wKd3-c2, bbe6-d5, bpc5d2(-bnd2)
8/7p/p5kP/1B1bp1p1/6P1/8/qpKpr1p1/b4rR1 (5+13) (2019-03-02)
milan: wBc6-a4 coorrection must be close to original as is possible M.Frelih (2019-03-03)
Yuri Bilokin: more economical wBc6-b5, wKd3-c2, wRg1-h1, bPc5-d2(-bNd2), bRe2-e3, -bPg2 8/7p/p3b1kP/1B2p1p1/6P1/4r3/qpKp4/b4r1R (5+12) (2022-12-20)
comment
Yuri Bilokin: Correction: wBc6-b5, wKd3-c2, bbe6-d5, bpc5d2(-bnd2)
8/7p/p5kP/1B1bp1p1/6P1/8/qpKpr1p1/b4rR1 (5+13) (2019-03-02)
milan: wBc6-a4 coorrection must be close to original as is possible M.Frelih (2019-03-03)
Yuri Bilokin: more economical wBc6-b5, wKd3-c2, wRg1-h1, bPc5-d2(-bNd2), bRe2-e3, -bPg2 8/7p/p3b1kP/1B2p1p1/6P1/4r3/qpKp4/b4r1R (5+12) (2022-12-20)
comment
Genre: h#
FEN: 8/7p/p1B1b1kP/2p1p1p1/6P1/3K4/qp1nr1p1/b4rR1
Input: Felber, Volker, 2011-11-08
Last update: A.Buchanan, 2022-12-20 more...
1. Sf3 Lc3 2. Sh4 (droht 3.Sg2 nebst 4.Sf4 oder Se1) Le5 3. Sf5 (droht 4.Se7 nebst 5.Sc6 oder Sd5) Lf6 4. Sd6 Ld4 5. Sxb5 Le5 6. Sa7 Lf6 7. Sc8 Ld8 8. Sd6 Lg5 9. Sc4 Lf4 10. Sxb6 Le3 11. Sc4 Ld4 12. Sa5 nebst 13. Sxb5#
6. ... Le5 7. Se7 Lc3 8. Sd5 Ld2 9. Sxb6 nebst 10. Sc4 und 11. Sa5
WSZ nennt 1930 als Erscheinungsjahr.
6. ... Le5 7. Se7 Lc3 8. Sd5 Ld2 9. Sxb6 nebst 10. Sc4 und 11. Sa5
WSZ nennt 1930 als Erscheinungsjahr.
Anton Baumann: Dual: 2.Sg5!(droht 3.Sf3) Ld4 3.Se4 (droht 4.Sd2) Le3 4.Sd6 Ld4 5.Sxb5 ... (2023-11-08)
comment
comment
* 1. ... Kb7 2. Tc8 Kxc8 3. Ta7 a2#
* 1. ... Kb7 2. Tc8 Kxa6 2. Tb8 a2#
1. Sd4 Kxd8 2. Ta7 Kc8,Ke8 3. Sc6,Se6 a2#
1. Sd4 Kb7 2. Sb5 Kxa6 3. Tb8 a2#
* 1. ... Kb7 2. Tc8 Kxa6 2. Tb8 a2#
1. Sd4 Kxd8 2. Ta7 Kc8,Ke8 3. Sc6,Se6 a2#
1. Sd4 Kb7 2. Sb5 Kxa6 3. Tb8 a2#
Genre: s#
FEN: 3R4/2k5/R1N5/p7/p7/pp6/1p6/bK6
Input: Frank Müller, 2011-12-28
Last update: Frank Müller, 2012-09-01 more...
Show statistic for complete result. Show search result faster by using ids.
https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20220810+AND+NOT+A%3D%27Eberle%2C+Stefan%27+AND+A%3D%27Dawson%2C+Thomas+R.%27
The problems of this query have been registered by the following contributors:
Gerd Wilts (3)hpr (6)
Hans-Jürgen Schäfer (6)
Andreas Mokosch (2)
HBae (2)
Markus Manhart (5)
Ralf Krätschmer (1)
Franz Pachl (1)
Felber, Volker (4)
Henri Nouguier (1)
Brian Stephenson (5)
Frank Müller (3)
Es läßt sich beweisen, daß die UWs in D,T,L,S zwingend erfolgt sind (a2-b8=L,h2-b8=S und entweder b2-c8=D/c2-c8=T oder b2-c8=T/c2-c8=D).
Erich Bartel: weitere Nachdrucke:
3) 160 Die Allumwandlung im Problemschach VIII 1966a---
4) Schach ohne Grenzen 1969.-- (2007-01-09)
Sally: Vier erzwungene Umwandlungen. (2012-02-21)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 da NUPG sonst cooked in 00:03:51 Minuten. (hh:mm:ss)
Keine Lösung: BP 33.0, BP 33.5.
Beispiel: 1.Sf3 Sf6 2.a4 Sd5 3.a5 Sf4 4.Ta4 c5 5.Td4 Db6 6.b4 Sc6 7.b5 Tb8 8.bxc6 cxd4 9.c7 e5 10.d3 La3 11.Le3 Lc1 12.c4 Db2 13.c5 b5 14.c6 Tb6 15.axb6 Ke7 16.b7 Kf6 17.b8L Lb7 18.c8D b4 19.c7 d5 20.Dh3 b3 21.c8T h5 22.g4 h4 23.Dg3 hxg3 24.h4 Th6 25.Lh3 dxe3 26.0–0 Sg2 27.Sh2 Se1 28.h5 Kg5 29.Td8 Ta6 30.Ld6 Kh4 31.h6 Ta1 32.h7 a5 33.h8S a4 34.Sg6+ fxg6
Umwandlungen: 17.b8L, 18.c8D, 21.c8T, 33.h8S. (2023-04-19)
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