40 problem(s) found in 3438 milliseconds (displaying 40 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND CPLUS AND S='U.S. Problem Bulletin'] [download as LaTeX]
1 - P0001750
Michel Caillaud
Markus Johannes Ott
3710 feenschach 63 12/1982
K. Widlert gewidmet
2. Preis
(10+15) C+
BP in 24.5
Michel Caillaud
Markus Johannes Ott
3710 feenschach 63 12/1982
K. Widlert gewidmet
2. Preis
(10+15) C+
BP in 24.5
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. Sc3 bxc2 5. Se4 cxd1=S 6. Sg5 Se3 7. Sxh7 Sxf1 8. Sg5 Th5 9. Sh7 Tha5 10. Kd1 e5 11. Kc2 Lb4 12. Kd3 d6 13. Ke4 Sd7 14. Kf5 Sdf6+ 15. Kg5 Kd7 16. Tb1 Se8+ 17. Kg4 Kc6+ 18. Kf3 Kb5 19. Ke4 Ka4 20. Kd3 b5 21. Kc2 Lf5+ 22. Kd1 Lxb1 23. Ke1 f5 24. Sf6 gxf6 25. b3#
13-zügiges Tempoverlustmanöver des wK.
13-zügiges Tempoverlustmanöver des wK.
Keywords: Unique Proof Game, Promenade (K), Non-standard material, Tempo Loss (K13), Promotion
Genre: Retro
Computer test: Euclide 0.93
FEN: r2qn1n1/2p5/3p1p2/rp2pp2/kb6/1P6/P2PPPPP/1bB1Kn1R
Reprints: 985 FIDE Album 1980-1982 1988
58 Shortest Proof Games 11/1991
3384 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-02-15 more...
Genre: Retro
Computer test: Euclide 0.93
FEN: r2qn1n1/2p5/3p1p2/rp2pp2/kb6/1P6/P2PPPPP/1bB1Kn1R
Reprints: 985 FIDE Album 1980-1982 1988
58 Shortest Proof Games 11/1991
3384 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-06-03
Last update: James Malcom, 2021-02-15 more...
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. Sc3 bxc2 5. Se4 cxd1=L 6. Sg5 Lb3 7. Sxh7 Lc4 8. Sg5 Th5 9. Sh7 Tha5 10. Kd1 d5 11. Kc2 Kd7 12. Kc3 Ke6 13. Kd4 Kf5 14. Ke3 Le6 15. Kf3 Sd7 16. Kg3 Tc8 17. Kh4 g5+ 18. Kh3 Lg7 19. Kg3 Le5+ 20. Kf3 Ld6 21. Ke3 Kg4 22. Kd4 c5+ 23. Kc3 Db6 24. Kc2 Db4 25. Kd1 b5 26. Ke1 Dxd2+
paul: Correction of P1001275 (2010-05-08)
A.Buchanan: Does it have to end in a check which is in some sense a defect if unnecessary. Can it be 24. … Db3+ 25. Kd1 b5 26. Ke1 b4 (2023-06-13)
Joost de Heer: 24... Qb3+ 25. Kd1 is illegal. (2023-06-13)
A.Buchanan: Well clearly 24... Qxb2+ then same idea (2023-06-13)
comment
A.Buchanan: Does it have to end in a check which is in some sense a defect if unnecessary. Can it be 24. … Db3+ 25. Kd1 b5 26. Ke1 b4 (2023-06-13)
Joost de Heer: 24... Qb3+ 25. Kd1 is illegal. (2023-06-13)
A.Buchanan: Well clearly 24... Qxb2+ then same idea (2023-06-13)
comment
Keywords: Unique Proof Game, Promenade (K), Non-standard material, Tempo Loss (K17)
Genre: Retro
Computer test: Stelvio 1.33, 1min
FEN: 2r3n1/3npp1N/3bb3/rppp2p1/2b3k1/8/PP1qPPPP/R1B1KB1R
Reprints: 3388 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-06-26
Last update: Reto, 2023-06-12 more...
Genre: Retro
Computer test: Stelvio 1.33, 1min
FEN: 2r3n1/3npp1N/3bb3/rppp2p1/2b3k1/8/PP1qPPPP/R1B1KB1R
Reprints: 3388 U.S. Problem Bulletin 102/103 07-10/1995
Input: Gerd Wilts, 1995-06-26
Last update: Reto, 2023-06-12 more...
1. a4 b6 2. a5 Lb7 3. a6 Dc8 4. axb7 Sa6 5. b8=L Db7 6. f3 Dc6 7. f4 Dc3 8. dxc3 Kd8 9. Le3 Kc8 10. Lc5 Kb7 11. Lb4 Kc6 12. La5 bxa5 13. e3 Kb6 14. Lb5 Kb7 15. Se2 Kc8 16. Tf1 Kd8 17. Tf3 Ke8 18. Dxd7#
D. Meinking: Comm., USPB 1995-1997 (2002-07-06)
Moldenhauer: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min.
Bei 16.5, 17.0 keine Lösung. BP 18.0 64 Lösungen.
C+ Euclide 1.11 in 44 Std. 07 Min. (2023-01-10)
A.Buchanan: This is a cool problem with tempo loss for both players (bK9 & wPf2). Noam likes to end proof games with checkmate, and in this case I guess it serves to eliminate shorter solutions which would otherwise save half a move. Checking 16.5 is sufficient for soundness. Thanks for taking the time to test. (2023-01-11)
A.Buchanan: Bit baffled how there can be 64 solutions in 18.0 moves since White just moved. 18.5 maybe? (2023-01-11)
ras@bsiag.com: Quickly checked because 45h seemed a lot for only 17.5 moves and only a few captures: Stelvio 0.98 is done in 210 seconds. (2023-01-11)
ras@bsiag.com: Well, Stelvio treats shorter solutions of same parity as cooks, so any shorter solution in 16.5, 15.5 etc would have been found by checking for 17.5. But anyhow, quickly checking 16.5 is done in a few seconds, finding no solution (of course). (2023-01-12)
more ...
comment
Moldenhauer: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min.
Bei 16.5, 17.0 keine Lösung. BP 18.0 64 Lösungen.
C+ Euclide 1.11 in 44 Std. 07 Min. (2023-01-10)
A.Buchanan: This is a cool problem with tempo loss for both players (bK9 & wPf2). Noam likes to end proof games with checkmate, and in this case I guess it serves to eliminate shorter solutions which would otherwise save half a move. Checking 16.5 is sufficient for soundness. Thanks for taking the time to test. (2023-01-11)
A.Buchanan: Bit baffled how there can be 64 solutions in 18.0 moves since White just moved. 18.5 maybe? (2023-01-11)
ras@bsiag.com: Quickly checked because 45h seemed a lot for only 17.5 moves and only a few captures: Stelvio 0.98 is done in 210 seconds. (2023-01-11)
ras@bsiag.com: Well, Stelvio treats shorter solutions of same parity as cooks, so any shorter solution in 16.5, 15.5 etc would have been found by checking for 17.5. But anyhow, quickly checking 16.5 is done in a few seconds, finding no solution (of course). (2023-01-12)
more ...
comment
Keywords: Unique Proof Game, Promenade (K), Tempo Loss (sK9 wBf2), Prenix (L), Obvious promotion (L)
Genre: Retro
Computer test: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min. Bei 16.5, keine Lösung.
FEN: rB2kbnr/p1pQpppp/n7/pB6/5P2/2P1PR2/1PP1N1PP/RN2K3
Input: Gerd Wilts, 1996-08-12
Last update: A.Buchanan, 2023-01-11 more...
Genre: Retro
Computer test: Computerprüfung: C+ Natch 3.3 in 45 Std. 46 Min. Bei 16.5, keine Lösung.
FEN: rB2kbnr/p1pQpppp/n7/pB6/5P2/2P1PR2/1PP1N1PP/RN2K3
Input: Gerd Wilts, 1996-08-12
Last update: A.Buchanan, 2023-01-11 more...
1. Sf3 a5 2. Sd4 a4 3. Sb3 axb3 4. a3 Ta4 5. Ta2 bxa2 6. Tg1 axb1=S 7. Th1 Sc3 8. Tg1 Se4 9. c3 Sg3 10. Dc2 Sh1 11. Dg6 hxg6 12. Kd1 Th5 13. Kc2 Sh6 14. Kd3 Td5+ 15. Ke3 e5 16. Kf3 Dh4 17. Ke3 Lc5+ 18. Kf3 La7 19. h3 b6 20. Ke3 La6 21. Kf3 Ld3 22. Ke3 Lf5 23. Kf3 e4+ 24. Ke3 Sg4+ 25. Kf4 Dh8 26. Kg5 f6+ 27. Kf4 g5+
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 5 Sekunden.
Keine Lösung: BP 26.0, BP 26.5. (2023-03-30)
comment
Keine Lösung: BP 26.0, BP 26.5. (2023-03-30)
comment
Keywords: Unique Proof Game, Promenade, Non-standard material, Pendulum (K x9), Promotion
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1n2k2q/b1pp2p1/1p3p2/3r1bp1/r3pKn1/P1P4P/1P1PPPP1/2B2BRn
Input: Gerd Wilts, 1996-08-12
Last update: James Malcom, 2023-05-02 more...
Genre: Retro
Computer test: Stelvio 1.11
FEN: 1n2k2q/b1pp2p1/1p3p2/3r1bp1/r3pKn1/P1P4P/1P1PPPP1/2B2BRn
Input: Gerd Wilts, 1996-08-12
Last update: James Malcom, 2023-05-02 more...
1. c3 g5 2. Da4 g4 3. Df4 d5 4. h3 d4 5. Dh2 g3 6. Kd1 Lg4 7. Kc2 e6 8. Kd3 Lb4 9. Ke4 c5 10. Ke5 Sc6+ 11. Kf4 Df6+ 12. Ke4 Sge7 13. Kd3 0-0 14. Kc2 Kh8 15. Kd1 Tg8 16. Ke1 Taf8
Keywords: Unique Proof Game, Castling, Tempo Loss (K11), Capture-free
Genre: Retro
Computer test: Stelvio 1.2, 27sec
FEN: 5rrk/pp2np1p/2n1pq2/2p5/1b1p2b1/2P3pP/PP1PPPPQ/RNB1KBNR
Input: Gerd Wilts, 1996-08-12
Last update: Reto, 2023-05-14 more...
Genre: Retro
Computer test: Stelvio 1.2, 27sec
FEN: 5rrk/pp2np1p/2n1pq2/2p5/1b1p2b1/2P3pP/PP1PPPPQ/RNB1KBNR
Input: Gerd Wilts, 1996-08-12
Last update: Reto, 2023-05-14 more...
6 - P0008204
Unto Heinonen
3230 U.S. Problem Bulletin 99/100 01-04/1995
1. Preis
(13+15) C+
BP in 27,0
Unto Heinonen
3230 U.S. Problem Bulletin 99/100 01-04/1995
1. Preis
(13+15) C+
BP in 27,0
1. g4 a5 2. g5 a4 3. g6 a3 4. gxh7 axb2 5. a4 bxa1=T 6. Lb2 g5 7. Lg7 b5 8. Lh6 Lg7 9. a5 Lc3 10. a6 Sf6 11. a7 Tg8 12. h8=S Lb7 13. Sg6 Lxh1 14. Sf4 Sc6 15. Sh5 Db8 16. f4 Db6 17. Sf3 0-0-0 18. a8=L Se5 19. Le4 Ta8 20. Lh7 La5 21. Sc3 g4 22. Da1 g3 23. Sd1 g2 24. Dd4 Tg3 25. Dg1 Th8 26. Sd4 Ta3 27. c3 Ta1
D. Meinking: 1st Prize, USPB 1995-1997 (2002-07-06)
paul: The report of the judge G. Lauinger in StrateGems 19/2002 (2021-10-29)
comment
paul: The report of the judge G. Lauinger in StrateGems 19/2002 (2021-10-29)
comment
Keywords: Unique Proof Game, Interchange (ttt), Castling, Promotion
Genre: Retro
Computer test: C+ by Stelvio beta from Reto Aschwanden
FEN: r1k4r/2pppp1B/1q3n1B/bp2n2N/3N1P2/2P5/3PP1pP/r2NKBQb
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 1996-09-11
Last update: A.Buchanan, 2022-11-27 more...
Genre: Retro
Computer test: C+ by Stelvio beta from Reto Aschwanden
FEN: r1k4r/2pppp1B/1q3n1B/bp2n2N/3N1P2/2P5/3PP1pP/r2NKBQb
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 1996-09-11
Last update: A.Buchanan, 2022-11-27 more...
7 - P0521735
Yuri Bilokin
Teppo Mänttä
2608 U.S. Problem Bulletin 86 11-12/1992
3. ehrende Erwähnung
Abt. Longer Helpmates
(3+3) C+
h#3
4.1...
Yuri Bilokin
Teppo Mänttä
2608 U.S. Problem Bulletin 86 11-12/1992
3. ehrende Erwähnung
Abt. Longer Helpmates
(3+3) C+
h#3
4.1...
1) 1. Kc2 Lc1 2. Kb3 Txc3+ 3. Ka2 Ta3#
2) 1. Lc2 Lxc3 2. Ld1 Le1 3. Le2 Tc3#
3) 1. c2 Txc2 2. Ke3 Tf2 3. Ld3 Ld4#
4) 1. Ke3 Txc3+ 2. Kf4 Tg3 3. Lf5 Le5#
2) 1. Lc2 Lxc3 2. Ld1 Le1 3. Le2 Tc3#
3) 1. c2 Txc2 2. Ke3 Tf2 3. Ld3 Ld4#
4) 1. Ke3 Txc3+ 2. Kf4 Tg3 3. Lf5 Le5#
Teppo Mänttä: The judge of the informal tourney was Unto Heinonen. (2021-04-29)
Teppo Mänttä: reprint: Suomen Tehtäväniekat n:o 6, page 202, 22/12/1994. (2021-04-29)
Teppo Mänttä: At the time of the publication my co-author was known as Juri BELOKON. (2021-04-29)
A.Buchanan: I’ve never understood the naming conventions in PDB. Basically the default spelling is a Germanisation of the Cyrillic, but there are also English, French and Unicode versions available, depending on viewer’s preference somehow. (2021-04-30)
comment
Teppo Mänttä: reprint: Suomen Tehtäväniekat n:o 6, page 202, 22/12/1994. (2021-04-29)
Teppo Mänttä: At the time of the publication my co-author was known as Juri BELOKON. (2021-04-29)
A.Buchanan: I’ve never understood the naming conventions in PDB. Basically the default spelling is a Germanisation of the Cyrillic, but there are also English, French and Unicode versions available, depending on viewer’s preference somehow. (2021-04-30)
comment
Genre: h#
Computer test: (Popeye C-Version 3.47 (1024 KB))
FEN: 8/8/8/2RK4/8/2pk4/1B6/1b6
Input: hpr, 1998-02-07
Last update: hpr, 1999-10-29 more...
a) 1. b1=L Lh4 2. La2 Sf6 3. Le6 Se7#
b) 1. b1=T+ Lb2 2. Tg1 Sf8 3. Tg5 Sh6#
b) 1. b1=T+ Lb2 2. Tg1 Sf8 3. Tg5 Sh6#
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 1K4N1/2p5/5BN1/4rk2/5b2/8/1p6/8
Input: Antonio Garofalo, 1997-11-03
Last update: hpr, 1999-05-09 more...
a) 1. Df6 Sb6 2. Te5 Sc8 3. Df5 Td6#
b) 1. Df5+ g4 2. Le5 Td7 3. Df6 Sc5#
b) 1. Df5+ g4 2. Le5 Td7 3. Df6 Sc5#
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/5bb1/2p1k3/1p2q1r1/N2Rpp2/2K5/6P1/4r3
Input: Andreas Mokosch, 1998-10-04
Last update: hpr, 1999-05-02 more...
1. a8=D+ Kb6 2. d8=D+ Tc7 3. Dd4+ Tc5 4. h8=D Kc7 5. Dd7+ Kb6 6. Dh6+! (6. Df6+?) Tc6 7. Sc4+ Kc5 8. De3+ Kxc4 9. Da6+ Txa6#
Aus 2516 U.S. Problem Bulletin entstanden.
Aus 2516 U.S. Problem Bulletin entstanden.
Keywords: konsekutive Umwandlungen 3 (DDD), Promotions to queens
Genre: s#
Computer test: I. Soroka: Gustav 3.1 w
FEN: 8/P2P3P/k7/2r1N3/K7/8/8/8
Reprints: 1183 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2010-12-30 more...
Genre: s#
Computer test: I. Soroka: Gustav 3.1 w
FEN: 8/P2P3P/k7/2r1N3/K7/8/8/8
Reprints: 1183 Selbstmatt-Miniaturen Reflexmatt-Miniaturen 2003
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2010-12-30 more...
1. Lb3! droht 2. Sd6#
1. ... Txe3 2. Sxe3#
1. ... Tf5 2. Se5#
1. ... Tf6 2. Dd7#
1. ... Tf7 2. De5#
1. ... Kf5 2. Sd6#
1. ... Txe3 2. Sxe3#
1. ... Tf5 2. Se5#
1. ... Tf6 2. Dd7#
1. ... Tf7 2. De5#
1. ... Kf5 2. Sd6#
Keywords: Brian Stephenson Collection (21814), Flight-giving key, Battery creation, Blocknutzung
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/6Q1/2K1k3/8/2Np4/4Pr2/2B5/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-30 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/6Q1/2K1k3/8/2Np4/4Pr2/2B5/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-30 more...
1. ... Lxd4 2. Sc7#
1. ... Lc7 2. Tc5#
1. ... Sd6 2. Dxd6#
1. ... Txd4 2. Sc3#
1. ... Tg4,Th4,Te5 2.D(x)e5#
1. Dd3! droht 2. Dc4#
1. ... Lxd4 2. Tc5#
1. ... Lc7+ 2. Sxc7#
1. ... Sd6 2. Sc3#
1. ... Txd4,Tg4,Th4 2. Df5#
1. ... Te5,Te~,Tf4 2. S(x)f4#
BS Problemid: 43867
Authors: Kovacevic, Marjan
Sources: StrateGems 2001, StrateGems 2002, Probleemblad 2002
Years: 1997
Das U.S. Problem Bulletin stellte mit Nr.105/106 (Januar-April 1997) sein Erscheinen ein. Der Preisbericht für 1997 von Eugene Rosner erschien zunächst in StrateGems 14 (2001), S.66, wo die Aufgabe zusammen mit P1064003 den 1.-2.Preis erhielt. Nach genauerem Überdenken änderte der Preisrichter sein Urteil in StrateGems 17 (2002), S.15. Im FIDE-Album 1995-97, A29, steht fälschlich "1.-2.Preis" statt "1.Preis".
1. ... Lc7 2. Tc5#
1. ... Sd6 2. Dxd6#
1. ... Txd4 2. Sc3#
1. ... Tg4,Th4,Te5 2.D(x)e5#
1. Dd3! droht 2. Dc4#
1. ... Lxd4 2. Tc5#
1. ... Lc7+ 2. Sxc7#
1. ... Sd6 2. Sc3#
1. ... Txd4,Tg4,Th4 2. Df5#
1. ... Te5,Te~,Tf4 2. S(x)f4#
BS Problemid: 43867
Authors: Kovacevic, Marjan
Sources: StrateGems 2001, StrateGems 2002, Probleemblad 2002
Years: 1997
Das U.S. Problem Bulletin stellte mit Nr.105/106 (Januar-April 1997) sein Erscheinen ein. Der Preisbericht für 1997 von Eugene Rosner erschien zunächst in StrateGems 14 (2001), S.66, wo die Aufgabe zusammen mit P1064003 den 1.-2.Preis erhielt. Nach genauerem Überdenken änderte der Preisrichter sein Urteil in StrateGems 17 (2002), S.15. Im FIDE-Album 1995-97, A29, steht fälschlich "1.-2.Preis" statt "1.Preis".
Keywords: reciprocal changed mates, Changed mates, transferred mates
Genre: 2#
FEN: 2n5/3B1p2/Rb6/1N1k4/1P1Pr3/1P4QN/4p2K/2R5
Reprints: A29 FIDE Album 1995-1997
Probleemblad 1997
StrateGems 2001
StrateGems 2002
Input: Brian Stephenson, 2004-08-12
Last update: James Malcom, 2021-04-10 more...
Genre: 2#
FEN: 2n5/3B1p2/Rb6/1N1k4/1P1Pr3/1P4QN/4p2K/2R5
Reprints: A29 FIDE Album 1995-1997
Probleemblad 1997
StrateGems 2001
StrateGems 2002
Input: Brian Stephenson, 2004-08-12
Last update: James Malcom, 2021-04-10 more...
1. ... Sxa6 2. Sxa6#
1. Se3? droht 2. De5#, 1. ... Sd7!
1. Sf6? droht 2. Dxe7#,Sxe6#, 1. ... Lf7!
1. Sxe7!? droht 2. De5#, 1. ... Tf6!
1. ... Sd7 2. Txc6#
1. Sb4!? droht 2. De5#, 1. ... Lf6!
1. ... Sd7 2. Txc6#
1. ... Sxa6 2. Sbxa6#
1. Sb6! droht 2. De5#
1. ... Tf6 2. Dxe7#
1. ... Lf6 2. Sxe6#
1. ... Sd7 2. Sxd7#
1. ... Se3,Sb4 2. Dd4#
BS Problemid: 49093
Authors: Prins, Henk
Sources: StrateGems 2001, StrateGems 2002, Probleemblad 2002
Years: 1997
Das U.S. Problem Bulletin stellte mit Nr.105/106 (Januar-April 1997) sein Erscheinen ein. Der Preisbericht für 1997 von Eugene Rosner erschien zunächst in StrateGems 14 (2001), S.66, wo die Aufgabe zusammen mit P1058804 den 1.-2.Preis erhielt. Nach genauerem Überdenken änderte der Preisrichter sein Urteil in StrateGems 17 (2002), S.15.
1. Se3? droht 2. De5#, 1. ... Sd7!
1. Sf6? droht 2. Dxe7#,Sxe6#, 1. ... Lf7!
1. Sxe7!? droht 2. De5#, 1. ... Tf6!
1. ... Sd7 2. Txc6#
1. Sb4!? droht 2. De5#, 1. ... Lf6!
1. ... Sd7 2. Txc6#
1. ... Sxa6 2. Sbxa6#
1. Sb6! droht 2. De5#
1. ... Tf6 2. Dxe7#
1. ... Lf6 2. Sxe6#
1. ... Sd7 2. Sxd7#
1. ... Se3,Sb4 2. Dd4#
BS Problemid: 49093
Authors: Prins, Henk
Sources: StrateGems 2001, StrateGems 2002, Probleemblad 2002
Years: 1997
Das U.S. Problem Bulletin stellte mit Nr.105/106 (Januar-April 1997) sein Erscheinen ein. Der Preisbericht für 1997 von Eugene Rosner erschien zunächst in StrateGems 14 (2001), S.66, wo die Aufgabe zusammen mit P1058804 den 1.-2.Preis erhielt. Nach genauerem Überdenken änderte der Preisrichter sein Urteil in StrateGems 17 (2002), S.15.
Keywords: Option key, Grimshaw, Threat correction
Genre: 2#
FEN: Kn6/2N1p1Q1/R1p1p2r/p1kN3b/2p1PB1b/2P5/2n5/rR6
Reprints: Probleemblad 1997
Input: Brian Stephenson, 2004-08-12
Last update: James Malcom, 2021-04-10 more...
Genre: 2#
FEN: Kn6/2N1p1Q1/R1p1p2r/p1kN3b/2p1PB1b/2P5/2n5/rR6
Reprints: Probleemblad 1997
Input: Brian Stephenson, 2004-08-12
Last update: James Malcom, 2021-04-10 more...
1. Tb6 a1=L 2. Dxf5+ Le5 3. Lc5 Laxb2#
1. Tb6 a1=S 2. Sf6+ gxf6 3. Txb3 Sxb3#
1. Tb6 a1=S 2. Sf6+ gxf6 3. Txb3 Sxb3#
Keywords: under-promotion B/S
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/3Q2p1/3b2P1/3k1b1R/1R1BN3/1p2PP2/pNpP4/2K5
Input: Frank Müller, 2004-11-01
Last update: Dieter Berlin, 2024-03-12 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/3Q2p1/3b2P1/3k1b1R/1R1BN3/1p2PP2/pNpP4/2K5
Input: Frank Müller, 2004-11-01
Last update: Dieter Berlin, 2024-03-12 more...
1. Tg5 g6 2. Th5+ gxh5 3. Sd3 h4 4. Le1 h3 5. Sf2 hxg2#
Keywords: Ideal mate, Interchange (SL), Minimal
Genre: s#
FEN: 8/6p1/6R1/8/8/8/4NBBk/4NK2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-07-15 more...
Genre: s#
FEN: 8/6p1/6R1/8/8/8/4NBBk/4NK2
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-07-15 more...
1. Da1+ Ta3 2. Db1 Tb3 3. Dd1 c2 4. Da1+ Ta3 5. Db2 Tb3 6. Da2+ Ta3 7. Dxc2+ Tb3 8. Dd1 c3 9. Da1+ Ta3 10. Df1 Ta1 11. Dxa1+ Kb3 12. Db1+ Ka3 13. Dc2 d4 14. Kc4 d3 15. Db3#
1. Kg7! Ke6 2. Txg5
1. ... Ke5 2. Txg5+
1. ... Ke5 2. Txg5+
1. Tg2! Kd1 2. Kf1 Ta8 3. Tgd2#
1. ... Tb1 2. Tcd2 Tb8 3. Tge2#
1. ... Tb1 2. Tcd2 Tb8 3. Tge2#
19 - P1242058
Alexander Hildebrand
Kjell Widlert
8196 Schach-Echo 23-24, p. 381, 12/1974
(8+10) C+
s#2
Alexander Hildebrand
Kjell Widlert
8196 Schach-Echo 23-24, p. 381, 12/1974
(8+10) C+
s#2
1. Tb7? Ld5!
1. Td5? bxc3!
1. Lf5? Kh3!
1. Kf3! droht 2. Lxg2+ Dxg2#
1. Kf3 Sb2,Se3 2. Txf2+ Dxf2#
In USPB wird nur Al. Hildebrand als Autor genannt.
1. Td5? bxc3!
1. Lf5? Kh3!
1. Kf3! droht 2. Lxg2+ Dxg2#
1. Kf3 Sb2,Se3 2. Txf2+ Dxf2#
In USPB wird nur Al. Hildebrand als Autor genannt.
Keywords: Obvious promotion
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: Q5b1/5R2/B7/8/1pr5/2N3KB/2NR1ppp/3n1kqr
Reprints: 1520 U.S. Problem Bulletin 01-02/1988
Input: Frank Müller, 2012-06-17
Last update: Dieter Berlin, 2024-03-29 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: Q5b1/5R2/B7/8/1pr5/2N3KB/2NR1ppp/3n1kqr
Reprints: 1520 U.S. Problem Bulletin 01-02/1988
Input: Frank Müller, 2012-06-17
Last update: Dieter Berlin, 2024-03-29 more...
1. Ta3! droht 2. Sxd5+ Kxd5 3. Ta5+ Lxa5#
1. Ta3 Dxg6,Sxg6 2. Sh3+ Dxg4 3. Sf2+ Lxf2#
1. Ta3 Sxg2 2. Se2+ Sf4 3. Sg3+ Lxg3#
1. Ta3 d4 2. Dc6+ Ke5 3. Ta5+ Lxa5#
Die Zweitveröffentlichung erfolgte unter dem Pseudonym Sterling Carrol
1. Ta3 Dxg6,Sxg6 2. Sh3+ Dxg4 3. Sf2+ Lxf2#
1. Ta3 Sxg2 2. Se2+ Sf4 3. Sg3+ Lxg3#
1. Ta3 d4 2. Dc6+ Ke5 3. Ta5+ Lxa5#
Die Zweitveröffentlichung erfolgte unter dem Pseudonym Sterling Carrol
Keywords: 5th WCCT theme, Batteriematt horizontal
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/8/5QB1/3p1q1P/4kNRn/7R/pPP3PP/r3b2K
Reprints: S0002 StrateGems 01-03/1998
Input: Frank Müller, 2012-10-21
Last update: Dieter Berlin, 2024-04-01 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/8/5QB1/3p1q1P/4kNRn/7R/pPP3PP/r3b2K
Reprints: S0002 StrateGems 01-03/1998
Input: Frank Müller, 2012-10-21
Last update: Dieter Berlin, 2024-04-01 more...
21 - P1252406
Eugene David Rosner
2163 U.S. Problem Bulletin 03-04/1991
(7+9) C+
s#2
b) sBf6 nach e5
c) sBh3 nach e5
Eugene David Rosner
2163 U.S. Problem Bulletin 03-04/1991
(7+9) C+
s#2
b) sBf6 nach e5
c) sBh3 nach e5
a) 1. Txf6 b3 2. Df5 Kg2#
b) 1. Txf7 b3 2. Tf2 Kxf2#
c) 1. Tg7 b3 2. Dg2+ Kxg2#
b) 1. Txf7 b3 2. Tf2 Kxf2#
c) 1. Tg7 b3 2. Dg2+ Kxg2#
Keywords: Batteriematt horizontal, half-pin white pieces
Genre: s#
Computer test: SCHRECKE: a)+b)+c): C+, popeye 4.89
FEN: 6R1/5p2/3p1pb1/3P1R2/1pP1Q3/7p/1P5p/1K4kr
Input: Frank Müller, 2012-10-28
Last update: Dieter Berlin, 2024-02-15 more...
Genre: s#
Computer test: SCHRECKE: a)+b)+c): C+, popeye 4.89
FEN: 6R1/5p2/3p1pb1/3P1R2/1pP1Q3/7p/1P5p/1K4kr
Input: Frank Müller, 2012-10-28
Last update: Dieter Berlin, 2024-02-15 more...
1. Te1! droht 2. Sa6+ Kd5 3. Dd1+ Sd4 4. Df3+ Sxf3#
1. ... Lxf2 2. Tb5+ Kd4 3. Lf6+ Txf6 4. Df4+ Txf4#
1. ... Lxf2 2. Tb5+ Kd4 3. Lf6+ Txf6 4. Df4+ Txf4#
Genre: s#
FEN: 3N4/2NpB3/3r2p1/2k3Pp/1R2R2K/P5PP/1Pn2P2/2Q2Bb1
Input: Frank Müller, 2012-10-28
Last update: Marcin Banaszek, 2022-03-02 more...
1. Sa5? Da4? 2. Dd3+, 1. ... Dc8!
1. Sd6? Da4? 2. Dd1+, 1. ... Dxd8!
1. Sb6! droht 2. Sxa8 Ta1#
1. Sb6 Dxd8,Da6 2. Dd3+ Dxd3#
1. Sb6 Da4 2. Sxa4 Ta1#
1. Sb6 Dc8 2. Sxc8 Ta1#
1. Sb6 Dxb7 2. Sxb7 Ta1#
1. Sb6 Db8 2. Txb8 Ta1#
1. Sb6 Da7 2. Txa7 Ta1#
1. Sb6 Da5 2. Lxa5 Ta1#
1. Sd6? Da4? 2. Dd1+, 1. ... Dxd8!
1. Sb6! droht 2. Sxa8 Ta1#
1. Sb6 Dxd8,Da6 2. Dd3+ Dxd3#
1. Sb6 Da4 2. Sxa4 Ta1#
1. Sb6 Dc8 2. Sxc8 Ta1#
1. Sb6 Dxb7 2. Sxb7 Ta1#
1. Sb6 Db8 2. Txb8 Ta1#
1. Sb6 Da7 2. Txa7 Ta1#
1. Sb6 Da5 2. Lxa5 Ta1#
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: q2N1R2/1R3b2/8/8/2N5/p4kPB/rpQ2P2/1K2B3
Input: Frank Müller, 2012-10-28
Last update: Dieter Berlin, 2024-02-15 more...
24 - P1252426
Eugene Albert Dugas
2457 U.S. Problem Bulletin 05-06/1992
2. Lob
(5+3) C+
s#5
b) sBb4 nach g2
Eugene Albert Dugas
2457 U.S. Problem Bulletin 05-06/1992
2. Lob
(5+3) C+
s#5
b) sBb4 nach g2
a) 1. ... Dxa4#
1. Lxb4+ Kc1 2. Te1+ Dd1 3. Da2 Dxe1 4. Ld2+ Dxd2 5. Db2+ Dxb2#
b) 1. La5+ Kc1 2. Df4+ De3 3. Te1+ Kc2 4. Da4+ Db3 5. Tg1 Dxa4#
1. Lxb4+ Kc1 2. Te1+ Dd1 3. Da2 Dxe1 4. Ld2+ Dxd2 5. Db2+ Dxb2#
b) 1. La5+ Kc1 2. Df4+ De3 3. Te1+ Kc2 4. Da4+ Db3 5. Tg1 Dxa4#
Genre: s#
Computer test: Gustav 4.1d
FEN: 8/8/8/8/Qp6/1q6/2kBRN2/K7
Input: Frank Müller, 2012-10-28
Last update: Arnold Beine, 2021-04-08 more...
* 1. ... Kf3 2. Txe2 hxg3 3. Tg2 Ta1#
1. Th6! droht 2. Txh4 Kf3 3. Txe2 Ta1#
1. Th6 Kxh3 2. Txh4+ Kg2 3. Lh5 Ta1#
1. Th6 Kf3 2. Ld5+ Kxe3 3. Txh4 Ta1#
1. Th6 hxg3 2. De4+ Lf3 3. Lxa2 Lxe4#
1. Th6! droht 2. Txh4 Kf3 3. Txe2 Ta1#
1. Th6 Kxh3 2. Txh4+ Kg2 3. Lh5 Ta1#
1. Th6 Kf3 2. Ld5+ Kxe3 3. Txh4 Ta1#
1. Th6 hxg3 2. De4+ Lf3 3. Lxa2 Lxe4#
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/5B2/4R3/8/7p/p3P1PP/rpQ1b1kp/1K2R2N
Input: Frank Müller, 2012-10-28
Last update: Dieter Berlin, 2024-02-16 more...
26 - P1263472
David Leo Brown
1995 U.S. Problem Bulletin 05-06/1990
2. ehrende Erwähnung
(12+8) C+
s#4
David Leo Brown
1995 U.S. Problem Bulletin 05-06/1990
2. ehrende Erwähnung
(12+8) C+
s#4
1. b7! droht 2. Db6+ axb6 3. Texe5+ Ld5#
1. ... Sd7 2. Texe5+ Sxe5 3. Db6+ axb6 4. Sd7+ Lxd7#
1. ... Txa5 2. Tc4+ Kb5 3. Tb4+ Kc5 4. Dxe5+ Ld5#
1. ... Sd7 2. Texe5+ Sxe5 3. Db6+ axb6 4. Sd7+ Lxd7#
1. ... Txa5 2. Tc4+ Kb5 3. Tb4+ Kc5 4. Dxe5+ Ld5#
Genre: s#
FEN: 1n3N2/p1Q1P3/pPb1KP2/P1k1pR2/4R3/2PBr3/5B2/r7
Input: Frank Müller, 2013-02-27
Last update: Marcin Banaszek, 2022-03-25 more...
1. Lb6? Lxb6!
1. Ld6! droht 2. Dxc5+ Txc5#
1. Ld6 Lxd6 2. Txd4+ Txd4#
1. Ld6 Lb6,La7,Lb4 2. Dxd5+ Lxd5#
1. Ld6 f6 2. Lxd5+ Lxd5#
1. Ld6! droht 2. Dxc5+ Txc5#
1. Ld6 Lxd6 2. Txd4+ Txd4#
1. Ld6 Lb6,La7,Lb4 2. Dxd5+ Lxd5#
1. Ld6 f6 2. Lxd5+ Lxd5#
Keywords: half-pin black pieces
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: b5B1/2B2p2/p7/Q1br2p1/2kpK1nn/pp1R4/8/8
Input: Frank Müller, 2013-02-27
Last update: Dieter Berlin, 2024-02-27 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: b5B1/2B2p2/p7/Q1br2p1/2kpK1nn/pp1R4/8/8
Input: Frank Müller, 2013-02-27
Last update: Dieter Berlin, 2024-02-27 more...
1. Lg1! Sa7,Sc7 2. Ld4+ Kxf4 3. Df8+ Lf7#
1. Lg1 Sd6! 2. Sg6+ Kf6 3. Df2+ Lf3#
1. ... S beliebig /Sd6 2. Ld4+/?
1. Lg1 Sa7 ( beliebig ) 2. Ld4+ Kxf4 3. Df8+ Lf7#
1. Lg1 Sd6! 2. Sg6+ Kf6 3. Df2+ Lf3#
1. ... S beliebig /Sd6 2. Ld4+/?
1. Lg1 Sa7 ( beliebig ) 2. Ld4+ Kxf4 3. Df8+ Lf7#
Keywords: white Bristol (1x), Echo, Black correction
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 2B5/8/pR5P/rnQbk2K/pR3N1P/P2PB3/7P/8
Input: Frank Müller, 2013-02-27
Last update: Dieter Berlin, 2024-04-05 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 2B5/8/pR5P/rnQbk2K/pR3N1P/P2PB3/7P/8
Input: Frank Müller, 2013-02-27
Last update: Dieter Berlin, 2024-04-05 more...
1. Lg8! droht 2. Te6+ Kd5 3. Tf6+ Ke5 4. Sf7+ Kd5 5. Sd6+ Ke5 6. Sc4+ Sxc4#
1. ... Lb2 2. Te6+ Kd5 3. Tec6+ Ke5 4. Ld6+ Kf6 5. Lc5+ Ke5 6. Ld4+ Lxd4#
1. ... g2 2. Te6+ Kd5 3. Tg6+ Ke5 4. Lf6+ Kd6 5. Lg5+ Ke5 6. Lf4+ Dxf4#
1. ... Lb2 2. Te6+ Kd5 3. Tec6+ Ke5 4. Ld6+ Kf6 5. Lc5+ Ke5 6. Ld4+ Lxd4#
1. ... g2 2. Te6+ Kd5 3. Tg6+ Ke5 4. Lf6+ Kd6 5. Lg5+ Ke5 6. Lf4+ Dxf4#
Keywords: Battery creation, Batterietransformation, Critical move, Batterieabbau, Battery play, Echo-Manöver
Genre: s#
FEN: 8/2R1B3/1P1R3N/4k3/4p2P/p2pK1pp/B1pn3q/2b5
Input: Frank Müller, 2013-02-27
Last update: Marcin Banaszek, 2021-01-07 more...
Genre: s#
FEN: 8/2R1B3/1P1R3N/4k3/4p2P/p2pK1pp/B1pn3q/2b5
Input: Frank Müller, 2013-02-27
Last update: Marcin Banaszek, 2021-01-07 more...
30 - P1267514
Michel Caillaud
2648 U.S. Problem Bulletin 01-04/1993
2. ehrende Erwähnung
(6+10) C+
s#2
Michel Caillaud
2648 U.S. Problem Bulletin 01-04/1993
2. ehrende Erwähnung
(6+10) C+
s#2
1. Tf8+ Ke6 2. e8=D+ Lxe8#
1. Tf8+ Ke5 2. e8=T+ Lxe8#
1. Tf8+ Kg5 2. e8=L+ Lxe8#
1. Tf8+ Kg7 2. e8=S+ Lxe8#
1. Tf8+ Ke5 2. e8=T+ Lxe8#
1. Tf8+ Kg5 2. e8=L+ Lxe8#
1. Tf8+ Kg7 2. e8=S+ Lxe8#
Keywords: Allumwandlung, Checking key
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 1q1B2RR/4P3/3p1k2/K1nr3B/bn1p4/r1b5/8/8
Input: Frank Müller, 2013-04-15
Last update: Dieter Berlin, 2024-02-16 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 1q1B2RR/4P3/3p1k2/K1nr3B/bn1p4/r1b5/8/8
Input: Frank Müller, 2013-04-15
Last update: Dieter Berlin, 2024-02-16 more...
1. Dh2? Txe7!
1. Dh5! Ta8,Te~ 2. Dh2 ... 3. Te4+ Kd3 4. De2+ Sxe2#
1. ... Txe7! 2. Sb5+ Kd5+ 3. Le4+ Ke6 4. Dd5+ Sxd5#
1. Dh5! Ta8,Te~ 2. Dh2 ... 3. Te4+ Kd3 4. De2+ Sxe2#
1. ... Txe7! 2. Sb5+ Kd5+ 3. Le4+ Ke6 4. Dd5+ Sxd5#
32 - P1267534
Janos Csak
2922 U.S. Problem Bulletin 01-04/1994
1. ehrende Erwähnung
(12+5) C+
s#6
b) wSd8 nach e8
Janos Csak
2922 U.S. Problem Bulletin 01-04/1994
1. ehrende Erwähnung
(12+5) C+
s#6
b) wSd8 nach e8
a) 1. Sb7! dxe5 2. Ka2 Kb4 3. Kb2 Ka4 4. Kc3 Ka3 5. Dc2 e4 6. Txg7 Lxg7#
b) 1. Th1! dxe5 2. Ka4 Kb2 3. Kb4 Ka2 4. Kc3 Ka3 5. Dc2 e4 6. Sxg7 Lxg7#
b) 1. Th1! dxe5 2. Ka4 Kb2 3. Kb4 Ka2 4. Kc3 Ka3 5. Dc2 e4 6. Sxg7 Lxg7#
Keywords: interchange in mating position
Genre: s#
FEN: 3N1b2/4p1pR/3pP1P1/3PP3/2P1Q3/K1k1P3/3N2R1/8
Input: Frank Müller, 2013-04-15
Last update: Marcin Banaszek, 2020-12-14 more...
Genre: s#
FEN: 3N1b2/4p1pR/3pP1P1/3PP3/2P1Q3/K1k1P3/3N2R1/8
Input: Frank Müller, 2013-04-15
Last update: Marcin Banaszek, 2020-12-14 more...
1. Sxf6+ Kc6 2. Dc8+ Lc7 3. Kxf7 La6 4. Kg7 Lb5 5. Sg8+ Kd5 6. Df5+ Le5#
Keywords: Round Trip (6)
Genre: s#
FEN: B4BN1/1r3pK1/5pRP/Pb1kbQ2/p1p5/N1P5/8/8
Input: Frank Müller, 2013-09-17
Last update: James Malcom, 2021-02-23 more...
Genre: s#
FEN: B4BN1/1r3pK1/5pRP/Pb1kbQ2/p1p5/N1P5/8/8
Input: Frank Müller, 2013-09-17
Last update: James Malcom, 2021-02-23 more...
34 - P1277891
Vukota Nikoletic
3295 U.S. Problem Bulletin 05-06/1995
Informalturnier 1995-97
1. Preis
(8+10) C+
s#5
Vukota Nikoletic
3295 U.S. Problem Bulletin 05-06/1995
Informalturnier 1995-97
1. Preis
(8+10) C+
s#5
1. Dh3 droht 2. Sf2+ Ke5 3. Dg3+ Sf4 4. Dg5+ hxg5 5. Sd3+ Sxd3#
1. Dh3 Lc2 2. Sg3+ Kd3 3. Tf3+ Se3 4. Le4+ Dxe4 5. Se5+ Dxe5#
1. Dh3 exf6 2. Sgxf6+ Ke5 3. Lc3+ Sxc3 4. Sd7+ Dxd7 5. d4+ Dxd4#
1. Dh3 Lc2 2. Sg3+ Kd3 3. Tf3+ Se3 4. Le4+ Dxe4 5. Se5+ Dxe5#
1. Dh3 exf6 2. Sgxf6+ Ke5 3. Lc3+ Sxc3 4. Sd7+ Dxd7 5. d4+ Dxd4#
Genre: s#
Computer test: A. Baumann: Gustav 4.2a
FEN: 8/1q2p3/r1B1pR1p/1pKn3N/bB2k1N1/8/p2P4/5Q2
Input: Frank Müller, 2013-09-17
Last update: Dieter Berlin, 2023-11-30 more...
1. Sxd5+ Kd3 2. La6+ Tc4 3. Dxd6 Lc2,Ld1 4. Da3+ Lb3 5. Se3+ Ke4 6. Lb7+ Tc6#
Vorbild ist s#6 Kirtley (3201 USPB)
Vorbild ist s#6 Kirtley (3201 USPB)
Keywords: Switchback (6)
Genre: s#
FEN: 8/1B1RP3/1PrpK3/3p4/4k3/Qb2N1P1/p3R3/B5N1
Input: Frank Müller, 2013-09-17
Last update: James Malcom, 2021-02-23 more...
Genre: s#
FEN: 8/1B1RP3/1PrpK3/3p4/4k3/Qb2N1P1/p3R3/B5N1
Input: Frank Müller, 2013-09-17
Last update: James Malcom, 2021-02-23 more...
1. Tg2! a6! 2. Th2+ Kg7 3. Th7+ Kf8 4. Th8+ Kg7 5. Tg8+ Kh6 6. Tg2 a5 7. Th2+ Kg7 8. Th7+ Kf8 9. Th8+ Kg7 10. Tg8+ Kh6 11. Tg2 Lxc4#
Keywords: Tempo Losing Manouevre (2x)
Genre: s#
Computer test: A. Baumann: Gustav 4.1d
FEN: 6R1/p2p1p2/3P1N1k/5P2/p1P1Nr2/Pb6/p1p2p2/n1B2K2
Reprints: SS006 The Hopper Magazine I01 24/12/2021
Input: Frank Müller, 2013-09-17
Last update: Dieter Berlin, 2023-07-27 more...
Genre: s#
Computer test: A. Baumann: Gustav 4.1d
FEN: 6R1/p2p1p2/3P1N1k/5P2/p1P1Nr2/Pb6/p1p2p2/n1B2K2
Reprints: SS006 The Hopper Magazine I01 24/12/2021
Input: Frank Müller, 2013-09-17
Last update: Dieter Berlin, 2023-07-27 more...
1. b8=L+! Kd8 2. g8=T+ Ke7 3. d8=S+ Sxa7 4. f8=D+ Lxf8#
Keywords: Allumwandlung, Batteriematt vertikal, konsekutive Umwandlungen 4 (LTSD)
Genre: s#
Computer test: %C+ PY 3.37 am 7.5.1996
FEN: 7K/RPkP1PP1/2n4b/1Q4P1/8/7r/8/8
Reprints: Die Schwalbe 195, p. 464, 06/2002
Input: Frank Müller, 2013-09-18
Last update: Marcin Banaszek, 2022-04-03 more...
Genre: s#
Computer test: %C+ PY 3.37 am 7.5.1996
FEN: 7K/RPkP1PP1/2n4b/1Q4P1/8/7r/8/8
Reprints: Die Schwalbe 195, p. 464, 06/2002
Input: Frank Müller, 2013-09-18
Last update: Marcin Banaszek, 2022-04-03 more...
1. d7! and e.g. d3 2. d8=L b5 3. a8=S gxf5 4. g8=D h2 5. h8=T h1=D 6. Txh1 dxc2 7. De6+ Lxe6#
Author's Note: Black can play d3, b5, gxf5, and h2 in any order, with corresponding White promotions as replies, giving all 24 permutations of White AUW (LSDT, LDST, etc.). If Black plays g5 instead of gxf5, then White replies fxg5 instead of promoting to D. A white pawn added at g5 would eliminate this pesky variation, but the white pawns are all used up!
Author's Note: Black can play d3, b5, gxf5, and h2 in any order, with corresponding White promotions as replies, giving all 24 permutations of White AUW (LSDT, LDST, etc.). If Black plays g5 instead of gxf5, then White replies fxg5 instead of promoting to D. A white pawn added at g5 would eliminate this pesky variation, but the white pawns are all used up!
SCHRECKE: Unlösbar, eventuell fehlt ein wBf4. (2020-10-28)
A.Buchanan: Mark Kirtley wrote to me: George found the original issue of the U.S. Problem Bulletin, showed me, and yes, there is a wPf4 in the original. George and I couldn't remember why we also had a wPa2, but a new computer test (Gustav) showed us the reason: it guards against a major dual Rh1-a1 in some variations.
There is still a minor dual in some variations (of varying length) if the bP promotes to a Q at h1, for then wRh8-h6+, bQh1xh6, and wQe6+ and bQxe6#. (2020-11-11)
A.Buchanan: So I have corrected the confirmed diagram typo (2020-11-11)
A.Buchanan: Have posted a simplified representation of the solution, at the author's request (2021-01-27)
Henrik Juel: So the problem is C+, except for the minor dual mentioned (2021-01-27)
comment
A.Buchanan: Mark Kirtley wrote to me: George found the original issue of the U.S. Problem Bulletin, showed me, and yes, there is a wPf4 in the original. George and I couldn't remember why we also had a wPa2, but a new computer test (Gustav) showed us the reason: it guards against a major dual Rh1-a1 in some variations.
There is still a minor dual in some variations (of varying length) if the bP promotes to a Q at h1, for then wRh8-h6+, bQh1xh6, and wQe6+ and bQxe6#. (2020-11-11)
A.Buchanan: So I have corrected the confirmed diagram typo (2020-11-11)
A.Buchanan: Have posted a simplified representation of the solution, at the author's request (2021-01-27)
Henrik Juel: So the problem is C+, except for the minor dual mentioned (2021-01-27)
comment
Keywords: Allumwandlung, konsekutive Umwandlungen 4 (DTLS)
Genre: s#, Mathematics
Computer test: Gustav 4.1c
FEN: 1BK1N3/P1P3PP/NpkP2p1/5Q2/1Rbp1P2/7p/P1RP4/8
Input: Frank Müller, 2013-09-18
Last update: James Malcom, 2021-01-28 more...
Genre: s#, Mathematics
Computer test: Gustav 4.1c
FEN: 1BK1N3/P1P3PP/NpkP2p1/5Q2/1Rbp1P2/7p/P1RP4/8
Input: Frank Müller, 2013-09-18
Last update: James Malcom, 2021-01-28 more...
1. Sg4+ Sh6 2. Sg5+ fxg5 3. Lg6+ Sxg6+ 4. fxg6+ Kh8 5. Txh6+ Lh7 6. Kf7+ Tb8 7. Txb8+ Ld8 8. c4+ d4 9. Lxd4+ Te5 10. De8+ Dxe8#
Genre: s#
FEN: R3BKbn/5n1k/1rQ2p1N/b1rp1P2/q7/2P2N2/1B6/7R
Input: Frank Müller, 2013-09-18
Last update: Marcin Banaszek, 2020-12-14 more...
1. Ld8! droht 2. Tg6+ Kxd6 3. Lg4+ Kd5 4. Lf3+ Sxf3#
1. ... cxd6 2. Te7+ Ke4 3. Lxc4+ Kf5 4. Ld3+ Sxd3#
1. ... Kd4 2. Td7+ Kd3 3. Sf5+ Ke4 4. Sg3+ Lxg3#
Zabunow-Thema: Ein Batterievorderstein zieht so ab, dass er gleichzeitig Hinterstein einer neuen Batterie wird. Diese Batterie spielt anschließend.
1. ... cxd6 2. Te7+ Ke4 3. Lxc4+ Kf5 4. Ld3+ Sxd3#
1. ... Kd4 2. Td7+ Kd3 3. Sf5+ Ke4 4. Sg3+ Lxg3#
Zabunow-Thema: Ein Batterievorderstein zieht so ab, dass er gleichzeitig Hinterstein einer neuen Batterie wird. Diese Batterie spielt anschließend.
Keywords: Batterie Typ Zabunov, Battery play
Genre: s#
FEN: 5N1Q/2p1B1R1/3NB3/1P2k1p1/1Pp2p1R/2p1p3/2r1p1Pb/2n1K1nr
Input: Frank Müller, 2013-09-18
Last update: Marcin Banaszek, 2022-01-06 more...
Genre: s#
FEN: 5N1Q/2p1B1R1/3NB3/1P2k1p1/1Pp2p1R/2p1p3/2r1p1Pb/2n1K1nr
Input: Frank Müller, 2013-09-18
Last update: Marcin Banaszek, 2022-01-06 more...
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Gerd Wilts (6)hpr (1)
Antonio Garofalo (1)
Andreas Mokosch (1)
Selbstmatt-Miniaturen/Reflexmatt-Miniaturen (1)
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Frank Müller (23)
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Felber, Volker (1)
Keine Lösung: BP 23.5, BP 24.0. (2023-05-12)
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