152 problem(s) found in 3626 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT CPLUS AND K='Schachschlüssel'] [download as LaTeX]
1 - P0501534
Jean-Michel Trillon
feenschach 7, p. 194, 01/1972
7. ehrende Erwähnung
(6+11) cooked
h#5
Jean-Michel Trillon
feenschach 7, p. 194, 01/1972
7. ehrende Erwähnung
(6+11) cooked
h#5
1. Sf3+ Se1 2. Se5 f3 3. Lg1 d4 4. Sc4 Sd3 5. Sb6 Sc5#
NL:
1. Ld4 Se3 2. Lxb2 Kxb2 3. Kb6 Sc4+ 4. Kc5 Kc3 5. d5 d4#
1. Lc5 Sd4 2. La3 bxa3 3. b2 Kc2 4. b1=T Se6 5. Tb6 Sc5#
NL:
1. Ld4 Se3 2. Lxb2 Kxb2 3. Kb6 Sc4+ 4. Kc5 Kc3 5. d5 d4#
1. Lc5 Sd4 2. La3 bxa3 3. b2 Kc2 4. b1=T Se6 5. Tb6 Sc5#
Keywords: interchange in mating position (ls (50)), Checking key, Line opening, Line closing
Genre: h#
FEN: 8/q2p4/kbp5/p7/P4p2/1p6/1PNP1P1p/1K4nr
Input: hpr, 1996-07-01
Last update: Gunter Jordan, 2021-05-18 more...
Genre: h#
FEN: 8/q2p4/kbp5/p7/P4p2/1p6/1PNP1P1p/1K4nr
Input: hpr, 1996-07-01
Last update: Gunter Jordan, 2021-05-18 more...
1. Ka3? droht 2. Tb3,T~8#, aber 1. ... Lf6!
1. Tb5+! Ka2 2. Lb7 droht 3. Lxd5
3. ... Te5 3. Tb2+ Ka1 4. Ka3 Se2 5. Txe2+ Kb1 6. Tb2+ Kc1 7. Le3+ Kd1 8. La6 ... 9. Tb1+ Kc2 10. Tc1#
2. ... f2 3. Lxd5+ Tb3 4. Txb3 Te5 5. Tb2+ Ka1 6. Tb3,T~8#
Schwer zu durchschauende Rückkehrstrategie (MS). Schwierig und schön (FU). Oft gesehene Vorplanstaffelung (FSch). Auch aus einem bekannten Schema läßt sich offensichtlich immer wieder etwas Interessantes machen (PG). Nach guter Einleitung folgt ein sehr grobes und in 6-zügiger Länge erschlaffendes Schlußspiel (MOe). In gewohnter Kozdon-Qualität, großartiges Problem (KHS).
1. Tb5+! Ka2 2. Lb7 droht 3. Lxd5
3. ... Te5 3. Tb2+ Ka1 4. Ka3 Se2 5. Txe2+ Kb1 6. Tb2+ Kc1 7. Le3+ Kd1 8. La6 ... 9. Tb1+ Kc2 10. Tc1#
2. ... f2 3. Lxd5+ Tb3 4. Txb3 Te5 5. Tb2+ Ka1 6. Tb3,T~8#
Schwer zu durchschauende Rückkehrstrategie (MS). Schwierig und schön (FU). Oft gesehene Vorplanstaffelung (FSch). Auch aus einem bekannten Schema läßt sich offensichtlich immer wieder etwas Interessantes machen (PG). Nach guter Einleitung folgt ein sehr grobes und in 6-zügiger Länge erschlaffendes Schlußspiel (MOe). In gewohnter Kozdon-Qualität, großartiges Problem (KHS).
Keywords: Checking key, Logical Problem, Beugung
Genre: n#
FEN: 3b4/8/B2pr3/p2p1b2/K2Bp3/5p1r/1R5n/k5n1
Input: Gerd Wilts, 2003-06-29
Last update: Gunter Jordan, 2020-11-25 more...
Genre: n#
FEN: 3b4/8/B2pr3/p2p1b2/K2Bp3/5p1r/1R5n/k5n1
Input: Gerd Wilts, 2003-06-29
Last update: Gunter Jordan, 2020-11-25 more...
1. Ta7+! Kb8 2. Ta8+ Kxa8 3. b7+ Ka7 4. bxc8=S+ Ka6 5. gxh8=L d4 6. Lxd4 Td3 7. Lh5 Tb3 8. Lg6 Tc3 9. Le3 Ta3 10. h8=L Txe3 11. e8=T 1-0
11. e8=D? Te1+ 12. Dxe1 patt
5. gxh8=D? d4 6. Dxd4 Ta1+ 7. Dxa1 patt
11. e8=D? Te1+ 12. Dxe1 patt
5. gxh8=D? d4 6. Dxd4 Ta1+ 7. Dxa1 patt
1. Dh8? Lf6+!
1. Dh2+! Lf4 2. Dh8 Le5+ 3. Tc3#
1. ... Sg3 2. Db2 1. ... Sg3 2. Dxg3
1. ... Sf4 2. Db2
1. Dh2+! Lf4 2. Dh8 Le5+ 3. Tc3#
1. ... Sg3 2. Db2 1. ... Sg3 2. Dxg3
1. ... Sf4 2. Db2
Keywords: Brian Stephenson Collection (15306), Checking key, Cross check, Blocknutzung, Römer
Genre: 3#
FEN: 1r6/1p2p1r1/1N1kp3/N1R3bQ/1B6/P2b4/4n3/K7
Reprints: English Chess Problems 1876
XVI Schach-Echo 15, p. 240, 08/1970
30 Die Schwalbe 13, p. 320, 02/1972
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-10-01 more...
Genre: 3#
FEN: 1r6/1p2p1r1/1N1kp3/N1R3bQ/1B6/P2b4/4n3/K7
Reprints: English Chess Problems 1876
XVI Schach-Echo 15, p. 240, 08/1970
30 Die Schwalbe 13, p. 320, 02/1972
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-10-01 more...
5 - P1033552
Valeriu Petrovici
Buletin Problemistic 1998
1.-2. Preis ex aequo
Coupe de la Federation de Roumanie des Echecs
(10+8)
#2
Valeriu Petrovici
Buletin Problemistic 1998
1.-2. Preis ex aequo
Coupe de la Federation de Roumanie des Echecs
(10+8)
#2
1. Dxh3? droht 2. Se6#
1. ... Se4!,Sb4!
1. Dxg1? droht 2. Dxf2#
1. ... Dg2!,Sb4!
1. Dxf3! droht 2. Td5#
1. ... Dxf3+ 2. Sxf3#
1. ... Le6 2. Sxe6#
1. ... Se4 2. Dd3#
1. ... c6 2. De3#
1. ... Sc3 2. Lxc3#
1. ... Sb4 2. c3#
BS Problemid: 18463
Authors: Petrovici, Valeriu
Sources:
Years: 1988
1. ... Se4!,Sb4!
1. Dxg1? droht 2. Dxf2#
1. ... Dg2!,Sb4!
1. Dxf3! droht 2. Td5#
1. ... Dxf3+ 2. Sxf3#
1. ... Le6 2. Sxe6#
1. ... Se4 2. Dd3#
1. ... c6 2. De3#
1. ... Sc3 2. Lxc3#
1. ... Sb4 2. c3#
BS Problemid: 18463
Authors: Petrovici, Valeriu
Sources:
Years: 1988
Keywords: Brian Stephenson Collection (18463), Option key, Gegenschach, Checking key, Sacrifice key
Genre: 2#
FEN: K7/2p5/3P4/B3R1N1/3k1P2/1P3pQb/n1P2n1P/6bq
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-09-14 more...
Genre: 2#
FEN: K7/2p5/3P4/B3R1N1/3k1P2/1P3pQb/n1P2n1P/6bq
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-09-14 more...
1. e4? dxe3ep!
1. Dd5+! Kh2 2. e4+ Kh1 3. Da5 Ta4 4. De1#
1. Dd5+! Kh2 2. e4+ Kh1 3. Da5 Ta4 4. De1#
Keywords: Brian Stephenson Collection (28947), En passant avoidance, Switchback (wD), Checking key
Genre: n#
FEN: 8/q4p2/p4b2/Q5pK/1r1p4/1P1P3p/2R1P3/7k
Reprints: Sammler 1916
976 FIDE Album 1914-1944/II 1972
B Die Schwalbe 61, p. 8, 02/1980
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-01-24 more...
Genre: n#
FEN: 8/q4p2/p4b2/Q5pK/1r1p4/1P1P3p/2R1P3/7k
Reprints: Sammler 1916
976 FIDE Album 1914-1944/II 1972
B Die Schwalbe 61, p. 8, 02/1980
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-01-24 more...
1. f7+! Kf8 2. Sg5 Sh5 3. Se6# 2. ... Sd5 2. Sg5#
1. ... Kd8 2. Sc5 Sh5 3. Se6# 2. ... Sd5 3. Sc6#
1. ... Kd8 2. Sc5 Sh5 3. Se6# 2. ... Sd5 3. Sc6#
Springer und Bauer gegen Springer
Anton Baumann: 1.fxg7 gewinnt auch, ebenso wie 1.Sc5 1.Sd6+ 1.Sg5
Dies ist eher ein #3 als eine Studie! (2022-03-22)
Dieter Berlin: In 'The White Knights' von White wird die Aufgabe als #3 angesagt. Wenn die C-Prüfung
ergibt, dass der Dreizüger korrekt ist, sollte er auch als solcher angesagt werden, da
lt. A. Baumann die andere Forderung mehrere 'Schlüssel' zulässt. Ich bitte um Prüfung! (2024-03-10)
comment
Anton Baumann: 1.fxg7 gewinnt auch, ebenso wie 1.Sc5 1.Sd6+ 1.Sg5
Dies ist eher ein #3 als eine Studie! (2022-03-22)
Dieter Berlin: In 'The White Knights' von White wird die Aufgabe als #3 angesagt. Wenn die C-Prüfung
ergibt, dass der Dreizüger korrekt ist, sollte er auch als solcher angesagt werden, da
lt. A. Baumann die andere Forderung mehrere 'Schlüssel' zulässt. Ich bitte um Prüfung! (2024-03-10)
comment
1. Dd2? c3 2. Sc5 cxd2!
1. Db4+! Kc1 2. Dd2+ Kb2 3. Sc5 c3 4. Dc1+ Kxc1 5. Sd3#
1. Db4+! Kc1 2. Dd2+ Kb2 3. Sc5 c3 4. Dc1+ Kxc1 5. Sd3#
(MZ524)
Sally: Sächsische Z. 10. Juli 1981 3. ehr. Erw.
1. Dd2? - Bc3, 2. Sc5 - Bcxd2! deshalb Tempogewinnung: 1.Db4+ - Kc1,2.Dd2+ - Kb2, 3. Sc5 - Bc3,und nun das Hinein-
tiehungsopfer der w. Dame. 4. Dc1+ - Kxc1 und das ab-
scließende :EinSpringer - Mustermatt 5. Sd3#. (2010-08-26)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-03-19)
comment
Sally: Sächsische Z. 10. Juli 1981 3. ehr. Erw.
1. Dd2? - Bc3, 2. Sc5 - Bcxd2! deshalb Tempogewinnung: 1.Db4+ - Kc1,2.Dd2+ - Kb2, 3. Sc5 - Bc3,und nun das Hinein-
tiehungsopfer der w. Dame. 4. Dc1+ - Kxc1 und das ab-
scließende :EinSpringer - Mustermatt 5. Sd3#. (2010-08-26)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-03-19)
comment
Keywords: Brian Stephenson Collection (36618), Tempo Winning Manouevre, Employment steering, Opferminimal, Model mate, Drag-in sacrifice, Checking key
Genre: n#
FEN: 8/8/N2Q4/8/2p5/p7/rkp1K3/qb6
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-19 more...
Genre: n#
FEN: 8/8/N2Q4/8/2p5/p7/rkp1K3/qb6
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-19 more...
* 1. ... a5 2. Sb5#
1. Sb5+! axb5 2. Le7 b4 3. Lxg5 bxa3 4. Ld2#
1. Sb5+! axb5 2. Le7 b4 3. Lxg5 bxa3 4. Ld2#
(MZ528)
.
Sally: Magyar Sakkèlet August 1981, 5. ehr. Erw.
Zugwechsel Problem mit einzügigen -SAtzspiel :
1. - Ba5, 2. Sb5#, ohne Wartezug für Weiß, deshalb Opfer:
1. Sb5+ - Baxb5, 2.Le7 - Bb4, 3. Lxg5 -Bbxa3, 4. Ld2# Mmatt
S. 52 Ausgew. S. Aufg. (1989) Nr. 93 (Zucker). (2010-08-29)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-03-19)
comment
.
Sally: Magyar Sakkèlet August 1981, 5. ehr. Erw.
Zugwechsel Problem mit einzügigen -SAtzspiel :
1. - Ba5, 2. Sb5#, ohne Wartezug für Weiß, deshalb Opfer:
1. Sb5+ - Baxb5, 2.Le7 - Bb4, 3. Lxg5 -Bbxa3, 4. Ld2# Mmatt
S. 52 Ausgew. S. Aufg. (1989) Nr. 93 (Zucker). (2010-08-29)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-03-19)
comment
Keywords: Brian Stephenson Collection (38101), Checking key, Sacrifice key, Model mate
Genre: n#
FEN: 8/1p6/pP1N4/2Bp2p1/p2p2p1/RpkP2P1/4P3/2K5
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-19 more...
Genre: n#
FEN: 8/1p6/pP1N4/2Bp2p1/p2p2p1/RpkP2P1/4P3/2K5
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-19 more...
1. Tc2? Te4! 1. Lc2? Sg4!
1. Df1+! Txf1 2. Tc2 Dxc2 3. Ta4+ 2. ... Lxc2 3. Ld3+
1. ... Sxf1 2. Lc2 Dxc2 3. Ta4+ 2. ... Lxc2 3. Tg6+
1. Df1+! Txf1 2. Tc2 Dxc2 3. Ta4+ 2. ... Lxc2 3. Ld3+
1. ... Sxf1 2. Lc2 Dxc2 3. Ta4+ 2. ... Lxc2 3. Tg6+
Keywords: Brian Stephenson Collection (43844), Plachutta (schwarz+weiss), vornehmer Nowotny (weiss), Deflection, Checking key, Queen sacrifice, Rook sacrifice, Sacrifice key, Bishop sacrifice
Genre: n#
FEN: K7/NN5B/k7/2PPP2P/7R/2b2p1n/pp4Rn/1q1br2Q
Reprints: 279 Problem-Palette , p. 97, 1970
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-08-17 more...
Genre: n#
FEN: K7/NN5B/k7/2PPP2P/7R/2b2p1n/pp4Rn/1q1br2Q
Reprints: 279 Problem-Palette , p. 97, 1970
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-08-17 more...
Probe 1. Dh5+? Dxh5+ 2. Kg8
1. Df2+! Kh3 2. Lg2+ Kh2 3. Dg3+ Kg1 4. Ld5+ Kf1 5. Df3+ Ke1 6. Tg1+ Kd2 7. Td1+ Kc2 8. De2+ Kc3 9. Dc4+ Kb2 10. Dxa2+ Kc3 11. Da3+ Kc2 12. Lb3+ Kc3 13. Lg8+ Kc2 14. Tc1+ Kd2 15. Dc3+ Ke2 16. Te1+ Kf2 17. De3+ Kg2 18. Te2+ Kf1,Kh1 19. Df3+ Kg1 20. Tg2+ Kh1 21. Tg7+ Kh2 22. Dh5+ Dxh5#
1. Df2+! Kh3 2. Lg2+ Kh2 3. Dg3+ Kg1 4. Ld5+ Kf1 5. Df3+ Ke1 6. Tg1+ Kd2 7. Td1+ Kc2 8. De2+ Kc3 9. Dc4+ Kb2 10. Dxa2+ Kc3 11. Da3+ Kc2 12. Lb3+ Kc3 13. Lg8+ Kc2 14. Tc1+ Kd2 15. Dc3+ Ke2 16. Te1+ Kf2 17. De3+ Kg2 18. Te2+ Kf1,Kh1 19. Df3+ Kg1 20. Tg2+ Kh1 21. Tg7+ Kh2 22. Dh5+ Dxh5#
Korrektur (sBh5 nach a2) in Die Schwalbe 12/2016
Henrik Juel: Popeye 4.61 with 'opt non 1 1 thr 0' found no flaws (2022-10-17)
comment
Henrik Juel: Popeye 4.61 with 'opt non 1 1 thr 0' found no flaws (2022-10-17)
comment
Keywords: Führung w Figur, Logik - Multiple Rückkehr, Checking key, Perpetual check
Genre: s#
FEN: 4q3/1B2p1RK/8/8/8/5Q2/p6k/8
Reprints: M33 mpk-Blätter 10/2011
F236 FIDE Album 2004-2006 2013
Input: Frank Müller, 2009-06-18
Last update: Gunter Jordan, 2022-10-17 more...
Genre: s#
FEN: 4q3/1B2p1RK/8/8/8/5Q2/p6k/8
Reprints: M33 mpk-Blätter 10/2011
F236 FIDE Album 2004-2006 2013
Input: Frank Müller, 2009-06-18
Last update: Gunter Jordan, 2022-10-17 more...
1. b4+
EPs B12L m
SCHRECKE: C+, popeye 4.87
1. b4+! cxb3 e.p. 2. Lc4 b2 3. Txa6#
1. ... Kb5 2. Lb7 c3 3. Lxa6# (2022-11-21)
comment
SCHRECKE: C+, popeye 4.87
1. b4+! cxb3 e.p. 2. Lc4 b2 3. Txa6#
1. ... Kb5 2. Lb7 c3 3. Lxa6# (2022-11-21)
comment
1. S5b6+! (Se7?) Ka7 2. Sc8+ Ka8 3. Kb5 b6 4. Ka6 b5 5. Scb6#
SfK m
Henrik Juel: cook 1.Se7 Ka7! 2.Sc8+ Ka8 3.Kb5 b6 4.Ka6 b5 5.Sb6# (other defenses allow #4) (2024-02-29)
comment
Henrik Juel: cook 1.Se7 Ka7! 2.Sc8+ Ka8 3.Kb5 b6 4.Ka6 b5 5.Sb6# (other defenses allow #4) (2024-02-29)
comment
Keywords: Miniature Collection (0323269), Minimal (b), Miniature, Checking key, Switchback (k), Model mate, Corner mate
Genre: n#
FEN: k7/1p1N4/8/K2N4/8/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2024-02-29 more...
Genre: n#
FEN: k7/1p1N4/8/K2N4/8/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2024-02-29 more...
1. Tg2+! Kc1 2. Dc2#
1. ... Ke1,Kd1 2. Db1#
1. ... Ke3 2. De4#
1. ... Kc3 2. Dd3#
1. ... Ke1,Kd1 2. Db1#
1. ... Ke3 2. De4#
1. ... Kc3 2. Dd3#
SCHRECKE: vergleiche: P1166359, P1143563 (2020-11-24)
Henrik Juel: C+ Popeye 4.61 (2020-11-24)
comment
Henrik Juel: C+ Popeye 4.61 (2020-11-24)
comment
Keywords: Miniature Collection (0003415), Checking key, Aristocrat
Genre: 2#
FEN: 8/8/6Q1/K1N5/8/6R1/3k4/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2020-11-24 more...
Genre: 2#
FEN: 8/8/6Q1/K1N5/8/6R1/3k4/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2020-11-24 more...
1. La1+! Kb3 2. De2 a2 Ka5 a6 4. Dd3#
1. ... Kb1 2. Dd2 Kxa1 3. Dc2 a2 4. Dc1#
Cook: Dual: 2. Lc3 Kc1 3. Da2 Kd1 4. Dd2#
1. ... Kb1 2. Dd2 Kxa1 3. Dc2 a2 4. Dc1#
Cook: Dual: 2. Lc3 Kc1 3. Da2 Kd1 4. Dd2#
1. Te1+ Kf8 2. Tb1 Ke8 3. Tb8#
Keywords: Miniature Collection (0326364), Miniature, Castling position, Checking key
Genre: 3#
FEN: K3k2r/R7/7p/2P5/8/8/8/5R2
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-08-21 more...
Genre: 3#
FEN: K3k2r/R7/7p/2P5/8/8/8/5R2
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-08-21 more...
1. Df6+! Kxe4 2. Lc6+ Kd3 3. Db2 Kc4 4. Dc3#
1. ... Kd3 2. Dc3+ Kxe4 3. Lf2 Kd5 4. Dd4#
1. ... Ke3 2. Lb5 Kxe4 3. Lg3 Kd5 4. De5#
1. ... Kd3 2. Dc3+ Kxe4 3. Lf2 Kd5 4. Dd4#
1. ... Ke3 2. Lb5 Kxe4 3. Lg3 Kd5 4. De5#
1. a8=D+ Kxa8 2. c8=D#
1. ... Kb6 2. c8=S#
1. ... Kb6 2. c8=S#
Keywords: Miniature Collection (0007961), Rex solus (s), Promotion key, Promotion (D), Checking key, Sacrifice key, Corner mate, Promotion in the mating move, under-promotion in mating move, Miniature, Model mate (Gnaden-)
Genre: 2#
FEN: 8/PkP5/8/1N6/1K6/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-01-27 more...
Genre: 2#
FEN: 8/PkP5/8/1N6/1K6/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-01-27 more...
1. Te7+! Kf3 2. Tf8+ Kg4 3. Tg7+ Kh5 4. Th8#
1. ... Kd3 2. Th2 Kd4 3. Th3
1. ... Kd2 2. Th2+ Kd3 3. Kb4
2. ... Kc3 3. Td7
1. ... Kd3 2. Th2 Kd4 3. Th3
1. ... Kd2 2. Th2+ Kd3 3. Kb4
2. ... Kc3 3. Td7
Keywords: Miniature Collection (0070698), Aristocrat, Miniature, Checking key, Rex solus
Genre: n#
FEN: 7R/1R6/8/1K6/8/8/4k3/8
Reprints: 112 Problemschach-Jahrbuch 1992 D , p. 58, 1992
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2022-11-09 more...
Genre: n#
FEN: 7R/1R6/8/1K6/8/8/4k3/8
Reprints: 112 Problemschach-Jahrbuch 1992 D , p. 58, 1992
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2022-11-09 more...
1. Sa7? Txc4? 2. Sc6+ ..., aber 1. ... Tb3+!
1. Tc8+! Txc8 2. Sa7 Tc7 3. Sc6+ Txc6+ 4. Kxc6 Ka7 5. Kc7 Ka6 6. b8=D Ka5 7. Db3 Ka6 8. Da4#
1. Tc8+! Txc8 2. Sa7 Tc7 3. Sc6+ Txc6+ 4. Kxc6 Ka7 5. Kc7 Ka6 6. b8=D Ka5 7. Db3 Ka6 8. Da4#
Qj BEU-TT
Loyd in "The Musical World": "We give, this week, two positions taken from actual play, so as to show how necessary problem study is to make the finished chess player; for it is acknowledged by all chess writers, that the study of problems is indispensale to a player before he can learn how to play the termination of his games correctly. ... Problem IX is the termination of a game recently played at the rooms of the Hudson County Chess Club. We are sorry that we cannot give the moves of the game, as it was very pretty. The termination, however, is well worthy of an examination, as it takes very good play to win."
SBD: Cooked, of course in that 2. Sd4 works as well, as well as the dual mate 8. Da4/b3#, although I am certain Loyd would not see these as defects based on the idea he was trying to show. (2012-02-23)
athulin: In Chess Strategy, p. 246 (but not in White?) Loyd expands on the original story:
"... the committee who were pitted against me
abandoned the game as drawn, which I willingly
accepted, telling them, at the same time, that they
had a forced mate in eight moves. After being informed
of the fact they were unable to discover it." (He also modifies the name of
the club to Hudson City Chess Club.) (2022-08-21)
athulin: ... and in Chess Strategy Loyd also states that he was playing the game blindfolded ... (2022-08-21)
comment
Loyd in "The Musical World": "We give, this week, two positions taken from actual play, so as to show how necessary problem study is to make the finished chess player; for it is acknowledged by all chess writers, that the study of problems is indispensale to a player before he can learn how to play the termination of his games correctly. ... Problem IX is the termination of a game recently played at the rooms of the Hudson County Chess Club. We are sorry that we cannot give the moves of the game, as it was very pretty. The termination, however, is well worthy of an examination, as it takes very good play to win."
SBD: Cooked, of course in that 2. Sd4 works as well, as well as the dual mate 8. Da4/b3#, although I am certain Loyd would not see these as defects based on the idea he was trying to show. (2012-02-23)
athulin: In Chess Strategy, p. 246 (but not in White?) Loyd expands on the original story:
"... the committee who were pitted against me
abandoned the game as drawn, which I willingly
accepted, telling them, at the same time, that they
had a forced mate in eight moves. After being informed
of the fact they were unable to discover it." (He also modifies the name of
the club to Hudson City Chess Club.) (2022-08-21)
athulin: ... and in Chess Strategy Loyd also states that he was playing the game blindfolded ... (2022-08-21)
comment
1. T6g5+? Kh6 2. Tg8 a1=D!
1. T4g5+ Kh4 2. Tg1 Kh5 3. Tg7 Kh6 4. Le3+ Kh5 5. Th7#
1. T4g5+ Kh4 2. Tg1 Kh5 3. Tg7 Kh6 4. Le3+ Kh5 5. Th7#
22 - P1129676
Gerhard Kaiser
194 Deutsche Schachblätter 06/1950
nach G. E. Carpenter
2. Preis
(5+2)
#3
Gerhard Kaiser
194 Deutsche Schachblätter 06/1950
nach G. E. Carpenter
2. Preis
(5+2)
#3
1. Dc5+! Kxe4 2. Kd2 Kxf4 3. De3#
1. ... Kxf4 2. Lf5 Kf3 3. Df2#
1. ... Kf3 2. Kd2 Kxf4 3. Df5# 2. ... Kxe4 3. De3#
1. ... Kxf4 2. Lf5 Kf3 3. Df2#
1. ... Kf3 2. Kd2 Kxf4 3. Df5# 2. ... Kxe4 3. De3#
1. Dc8+! Kxc8 2. Kc6 f5 3. b7#
1. ... Ke7 2. Ld8+ Kf8 3. Lf6#
1. ... Ke7 2. Ld8+ Kf8 3. Lf6#
Keywords: Miniature Collection (0047287), Minimal (b), Miniature, Flight giving sacrifice key, Checking key, Drag-in sacrifice, Pawn mate, Queen sacrifice
Genre: 3#
FEN: 8/2Bk1p2/QP6/2K5/8/8/8/8
Reprints: 537b Problemschach-Jahrbuch 1994 D , p. 255, 1995
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-07-23 more...
Genre: 3#
FEN: 8/2Bk1p2/QP6/2K5/8/8/8/8
Reprints: 537b Problemschach-Jahrbuch 1994 D , p. 255, 1995
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-07-23 more...
1. Lc8+ Kb5 2. Ld7+ Ka6 3. Tf6+ Db6+ 4. Txb6+ axb6 5. Kb8 b5 6. Kc7 Ka7 7. Lxb5 Ka8 8. La6 Ka7 9. b5 Ka8 10. Lb7+ Ka7 11. b6#
Keywords: Miniature Collection (0329247), Ideal mate, Checking key, Pawn mate
Genre: n#
FEN: 8/p1K5/k7/8/1P3R2/7B/8/6q1
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-01-06 more...
Genre: n#
FEN: 8/p1K5/k7/8/1P3R2/7B/8/6q1
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-01-06 more...
25 - P1136409
Samuel Loyd
45 The Chess Monthly 11/1857
1. Preis
(Set: "Let those Laugh who Win.")
(4+3)
#3
Samuel Loyd
45 The Chess Monthly 11/1857
1. Preis
(Set: "Let those Laugh who Win.")
(4+3)
#3
1. Sg4+ Kh1 2. Dh2+ gxh2 3. Sf2#
1. ... Kh3 2. Sh2 f3 3. Th8#
1. ... Kf1 2. Ta8 ... 3. Ta1#
1. ... Kf3 2. Dc2
schachbietender Schlüssel!
1. ... Kh3 2. Sh2 f3 3. Th8#
1. ... Kf1 2. Ta8 ... 3. Ta1#
1. ... Kf3 2. Dc2
schachbietender Schlüssel!
E4cS ST34(5)
A.C.WHite in 'Sam Loyd and his Chess Problems' (p.23): " I think the three-mover of the winning set can hold its own against any other seven-piece miniature that has been composed since, for difficulty, variety of ideas, and general beauty.
Loyd said of it in the Strategy (p.43): "No. 14 was a haphazard, impromptu little fellow that I composed in an instant and entered in the Chess Monthly Tournament, and never appreciated it until it received the first prize, since which time it has become my most famous problem, and is continually referred to as a difficult and beautiful problem that conflicts with all the established views of composition."
And more recently: "No. 14 was an impromptu posed for Paul Morphy, who complimented it highly. It won the Chess Monthly prize, and has been a popular favourite for many years as showing four different styles of composition in the variations: the brilliant Queen sacrifice, the strategic play with Knight, the waiting principle, and the long flights of the Rook" (MS.).
One of the things Loyd showed me the last time I saw him (p.135) was this very position. "You remember this," he said, setting it up.
"Now look here," and he moved the White King to b6, the Queen to c5, the Black King to f1, the Bishop's Pawn to h4, and added Black Pawns at d5 and e7. "What do you make of this? Why, it is evidently a four-mover. 1. Qc2 Kg2, and you have my problem. There are variations if the King moves to e1 or g1. Now, a German composer published this under his own name and never said 'by your leave.' He objected to a check on the first move, probably, but he has spoiled the whole thing by putting that Pawn at h4. It prevents the best variation of all in my problem: 1. Sg4+ Kh3; 2. Sh2; while he simply repeats the Queen sacrifice. The only merit of the four-mover is that my key, 1. Sg4, still makes a very fair try, though of course, 1. ... Pd4 would defeat it."
Sally: °
1. Sg4+! - Kf3, 2. Dc2 - Bg2,,, 3. Dd3#.
1. ..... - Kh3, 2. Sh2 - Kh4/g2,3. Dh8#/Th8#.
(1. .... - Kg1, 2. Ta8 und Td8).
Der Höhepunkt innerhalb des reichhaltigen Variantenspiels bildet das Damenopfer auf "h2" mit dem durch Linienöffnungen und block ermöglichtem Matt -. Es ist dies eine der bekanntesten Miniaturen von Loyd. (2018-12-31)
Henrik Juel: C+ Popeye 4.61, except for the dual 1... Kg1 2.Ta8,Td8 (2021-07-15)
comment
A.C.WHite in 'Sam Loyd and his Chess Problems' (p.23): " I think the three-mover of the winning set can hold its own against any other seven-piece miniature that has been composed since, for difficulty, variety of ideas, and general beauty.
Loyd said of it in the Strategy (p.43): "No. 14 was a haphazard, impromptu little fellow that I composed in an instant and entered in the Chess Monthly Tournament, and never appreciated it until it received the first prize, since which time it has become my most famous problem, and is continually referred to as a difficult and beautiful problem that conflicts with all the established views of composition."
And more recently: "No. 14 was an impromptu posed for Paul Morphy, who complimented it highly. It won the Chess Monthly prize, and has been a popular favourite for many years as showing four different styles of composition in the variations: the brilliant Queen sacrifice, the strategic play with Knight, the waiting principle, and the long flights of the Rook" (MS.).
One of the things Loyd showed me the last time I saw him (p.135) was this very position. "You remember this," he said, setting it up.
"Now look here," and he moved the White King to b6, the Queen to c5, the Black King to f1, the Bishop's Pawn to h4, and added Black Pawns at d5 and e7. "What do you make of this? Why, it is evidently a four-mover. 1. Qc2 Kg2, and you have my problem. There are variations if the King moves to e1 or g1. Now, a German composer published this under his own name and never said 'by your leave.' He objected to a check on the first move, probably, but he has spoiled the whole thing by putting that Pawn at h4. It prevents the best variation of all in my problem: 1. Sg4+ Kh3; 2. Sh2; while he simply repeats the Queen sacrifice. The only merit of the four-mover is that my key, 1. Sg4, still makes a very fair try, though of course, 1. ... Pd4 would defeat it."
Sally: °
1. Sg4+! - Kf3, 2. Dc2 - Bg2,,, 3. Dd3#.
1. ..... - Kh3, 2. Sh2 - Kh4/g2,3. Dh8#/Th8#.
(1. .... - Kg1, 2. Ta8 und Td8).
Der Höhepunkt innerhalb des reichhaltigen Variantenspiels bildet das Damenopfer auf "h2" mit dem durch Linienöffnungen und block ermöglichtem Matt -. Es ist dies eine der bekanntesten Miniaturen von Loyd. (2018-12-31)
Henrik Juel: C+ Popeye 4.61, except for the dual 1... Kg1 2.Ta8,Td8 (2021-07-15)
comment
Keywords: Miniature Collection (0047934), Checking key, Miniature
Genre: 3#
FEN: 6R1/2K5/8/8/5p2/6p1/1Q3Nk1/8
Reprints: 50 Illustrirtes Familien-Journal (Leipzig) 217 1857
102 Neue Berliner Schachzeitung , p. 287, 09/1864
68 Chess Strategy (Loyd) 1878
268 Schachminiaturen - Neue Folge 1903
14 Sam Loyd and his Chess Problems , p. 22, 1913
13 Volksstimme (Magdeburg) 12/04/1931
XXVIII Deutsche Schachblätter 15, p. 236, 01/08/1935
I Schach-Express , p. 59, 15/02/1948
3a-1108 2345 Chess Problems 1997
Input: Felber, Volker, 2010-09-11
Last update: Mario Richter, 2021-07-14 more...
Genre: 3#
FEN: 6R1/2K5/8/8/5p2/6p1/1Q3Nk1/8
Reprints: 50 Illustrirtes Familien-Journal (Leipzig) 217 1857
102 Neue Berliner Schachzeitung , p. 287, 09/1864
68 Chess Strategy (Loyd) 1878
268 Schachminiaturen - Neue Folge 1903
14 Sam Loyd and his Chess Problems , p. 22, 1913
13 Volksstimme (Magdeburg) 12/04/1931
XXVIII Deutsche Schachblätter 15, p. 236, 01/08/1935
I Schach-Express , p. 59, 15/02/1948
3a-1108 2345 Chess Problems 1997
Input: Felber, Volker, 2010-09-11
Last update: Mario Richter, 2021-07-14 more...
1. Dd1+ Kxe4 2. Kd6 Kf5 3. Dg4#
1. ... Ke5 2. Sc5 Kf5 3. Dh5#
1. ... Kc4 2. Sdc3 Kb4 3. Da4#
1. ... Ke5 2. Sc5 Kf5 3. Dh5#
1. ... Kc4 2. Sdc3 Kb4 3. Da4#
27 - P1139236
Gunter Jordan
69 Die Schwalbe 238, p. 193, 08/2009
Klaus-Peter-Zuncke-Gedenkturnier
3. Preis
PR Martin Minski
(4+3)
#4
2.1...
Gunter Jordan
69 Die Schwalbe 238, p. 193, 08/2009
Klaus-Peter-Zuncke-Gedenkturnier
3. Preis
PR Martin Minski
(4+3)
#4
2.1...
1. Ld5-f7+!
1. Ld5-c6+!
1. Ld5-c6+!
Gunter Jordan: Preisrichter Martin Minski: "„Gedenkkreuz“ mit thematischer Doppelsetzung in Zweispännerform und das als Miniatur! Die thematische Verführung 1.Le6+? Ke4 2.Tf7 Kf3 3.Ld5+ Kg4 4.Tg7+ Kh~ scheitert daran, dass der sK auf der rechten Seite zu viel Platz besitzt. Deshalb besser: 1.Lc6+! Kc4 2.Tb7 (droht 3.Txb5 nebst 4.Tb4#) Kb3 3.Ld5+ Ka4 4.Ta7# mit Mustermatt. Die zweite asymmetrische Lösung lautet: 1.Lf7+ Ke4 2.Ke2 b4 3.Lh5 (droht 4.Lf3#) f4 4.Lg6#. Dieser Läufertanz ist auf der linken Seite aus Platzgründen nicht möglich: 1.Lb7? Kc4 2.Kc2 f4 3.L?." (2012-03-17)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-02-01)
comment
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-02-01)
comment
Keywords: Miniature Collection (0356029), Symmetrical position, Asymmetrical solution, Miniature, Checking key, Symbol problem (Kreuz)
Genre: n#
FEN: 8/3R4/8/1p1B1p2/3k4/3N4/3K4/8
Reprints: C108 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-01-10 more...
Genre: n#
FEN: 8/3R4/8/1p1B1p2/3k4/3N4/3K4/8
Reprints: C108 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-01-10 more...
1. Se3+ Kc1 2. Kc3 Kb1 3. Sc4 Ka2 4. Kc2 Ka1 5. Kb3 Kb1 6. Sa3+ Ka1 7. Lf6#
Keywords: Miniature Collection (0354665), Rex solus (s), Aristocrat, Checking key, Corner mate
Genre: n#
FEN: 8/8/8/6B1/8/3K4/2N5/3k4
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-05-29 more...
Genre: n#
FEN: 8/8/8/6B1/8/3K4/2N5/3k4
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-05-29 more...
* 1. ... Kxf5 2. g4+ Ke6 3. Kc5 Ke5 4. Te7#
1. Sf4+! Kf6 2. Kc5 Kxf5 3. Kd5 Kf6 4. Sh5+ Kf5 5. g4#
2. ... Ke5 3. Sd4 Kf6 4. Sh5+ Ke5 5. Te7#
1. ... Kxf5? 2. Kd5 Kf6 3. Sh5 Kf5 4. g4#
1. Sf4+! Kf6 2. Kc5 Kxf5 3. Kd5 Kf6 4. Sh5+ Kf5 5. g4#
2. ... Ke5 3. Sd4 Kf6 4. Sh5+ Ke5 5. Te7#
1. ... Kxf5? 2. Kd5 Kf6 3. Sh5 Kf5 4. g4#
1. Ta6+ Kxa6 2. Kc6 Ka7 3. Lxb7 Kb8 4. La6 Ka7 5. Kxb5 Ka8 6. Kb6 Kb8 7. b5 Ka8 8. Kc7 Ka7 9. Lc8 Ka8 10. Lb7+ Ka7 11. b6#
Keywords: Miniature Collection (0329246), Miniature, Checking key, Flight giving sacrifice key, Pawn mate, Ideal mate
Genre: n#
FEN: 2B5/1n1K4/1k6/1p6/RP6/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-08-21 more...
Genre: n#
FEN: 2B5/1n1K4/1k6/1p6/RP6/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-08-21 more...
1. Dxc6+! Ka7 2. Kc7 Tc1 3. Dxc1 Ka6 4. Dg5 Ka7 5. Da5#
2. ... Th7+ 3. d7 Txd7+ 4. Dxd7 Ka6 5. Da4#
2. ... Th7+ 3. d7 Txd7+ 4. Dxd7 Ka6 5. Da4#
1. Df3+ Kg1 2. Sc3 De6+ 3. Se2+ Dxe2+ 4. Dxe2 Kh1 5. Df1#,Dh2#
1. ... Dg2 2. Sf2+ Kg1 3. De2 Dh3 4. Sxh3+ Kh1 5. Df1#
3. ... Dxg3 4. Df1+ Kh2 5. Dh1#
Man könnte meinen, bei dieser Lage des schwarzen Monarchen ginge die Mattsetzung schneller. Aber seine Adjudantin will erst überwunden sein. Und dazu bedarf es auch des einen oder anderen stillen Zuges.
1. ... Dg2 2. Sf2+ Kg1 3. De2 Dh3 4. Sxh3+ Kh1 5. Df1#
3. ... Dxg3 4. Df1+ Kh2 5. Dh1#
Man könnte meinen, bei dieser Lage des schwarzen Monarchen ginge die Mattsetzung schneller. Aber seine Adjudantin will erst überwunden sein. Und dazu bedarf es auch des einen oder anderen stillen Zuges.
Henrik Juel: late dual 1... Dg2 2.Sf2+ Kg1 3.De2 De4 4.Sh3+,Sxe4, and mate duals (2023-05-21)
comment
comment
1. Dh1+! Kxh1 2. a8=D+ Tg2+ 3. Ke3 Kg1 4. Da1# 2. ... Kg1 3. Da1+ Kg2 4. Df1#
1. Sd5+! Kxd5 2. Ke2 Kd4 3. Le6 Ke4 4. Tc4#
1. ... Kd4 2. Sc7 Ke3 3. Se6 Kf3 4. Tc3#
1. ... Kb3 2. Ld3 Ka4 3. Lc4 Ka3 4. Ta2#
1. ... Kd4 2. Sc7 Ke3 3. Se6 Kf3 4. Tc3#
1. ... Kb3 2. Ld3 Ka4 3. Lc4 Ka3 4. Ta2#
Keywords: Miniature Collection (0080044), Miniature, Checking key, Model mate, Rex solus (s)
Genre: n#
FEN: 8/8/8/4PB2/2k2P2/2N5/2R5/5K2
Input: Felber, Volker, 2010-09-12
Last update: Gunter Jordan, 2023-12-15 more...
Genre: n#
FEN: 8/8/8/4PB2/2k2P2/2N5/2R5/5K2
Input: Felber, Volker, 2010-09-12
Last update: Gunter Jordan, 2023-12-15 more...
1. c6+ Ke8 2. Sf5,c7 Ld4+ 3. Kg6 Le5 4. Le7
1. Lf6+ Dg7+ 2. Lxg7+ Kh7 3. f5 f6 4. Lxf6 Kh6 5. g4 Kh7 6. Lg5 Kh8 7. Lh6 Kh7 8. g5 Kh8 9. Lg7+ Kh7 10. g6#
Keywords: Miniature Collection (0328995), Miniature, Pawn mate, Ideal mate, Checking key
Genre: n#
FEN: 5K1k/5p1q/8/8/5P1B/6P1/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2022-07-25 more...
Genre: n#
FEN: 5K1k/5p1q/8/8/5P1B/6P1/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2022-07-25 more...
1. f8=D? Tg3+! 2. Dxg3,fxg3=
1. f8=T? Tf5!
1. f8=L? Tf7!
1. f8=S+! Txf8 2. Lxf8 Kh8 3. Dg7#
1. ... Kh8 2. Dh6+ Kg8 3. Dh7#
1. f8=T? Tf5!
1. f8=L? Tf7!
1. f8=S+! Txf8 2. Lxf8 Kh8 3. Dg7#
1. ... Kh8 2. Dh6+ Kg8 3. Dh7#
Keywords: Miniature Collection (0058373), Checking key, Allumwandlung, under-promotion key (S), Minimal (b), Miniature
Genre: 3#
FEN: 8/5P1k/8/6Q1/1B6/5r2/5P2/6K1
Reprints: Die Schwalbe 3, p. 84, 02/1970
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-09-25 more...
Genre: 3#
FEN: 8/5P1k/8/6Q1/1B6/5r2/5P2/6K1
Reprints: Die Schwalbe 3, p. 84, 02/1970
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-09-25 more...
1. Sf1+! Kg1 2. Sh2 Kh1 3. Sf3#
1. ... Kxf1 2. Dh2 Ke1 3. Df2+
1. ... Kf3 2. Dg3+ Ke4 3. De3#
1. ... Kxf1 2. Dh2 Ke1 3. Df2+
1. ... Kf3 2. Dg3+ Ke4 3. De3#
SA2 m
1 NL
Felber, Volker: Korrektur: Kg6 Dh4 Sf1 Sh5 - Kg2
Funkschach (31), 01.08.1926, Seite 470, Nr. 534a.
Dr. Zepler behält den Preis (W. Maßmann) (2011-02-03)
Henrik Juel: cook 1.Sf5+
1... Kg1,Kf3 2.Dg3+
1... Kf1 2.Dh2,Se3+ (2022-04-27)
comment
1 NL
Felber, Volker: Korrektur: Kg6 Dh4 Sf1 Sh5 - Kg2
Funkschach (31), 01.08.1926, Seite 470, Nr. 534a.
Dr. Zepler behält den Preis (W. Maßmann) (2011-02-03)
Henrik Juel: cook 1.Sf5+
1... Kg1,Kf3 2.Dg3+
1... Kf1 2.Dh2,Se3+ (2022-04-27)
comment
Keywords: Miniature Collection (0332744), Aristocrat, Miniature, Checking key, Figurenopfer (wS)
Genre: 3#
FEN: 8/8/6K1/8/5N1Q/6N1/5k2/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Dieter Berlin, 2022-04-26 more...
Genre: 3#
FEN: 8/8/6K1/8/5N1Q/6N1/5k2/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Dieter Berlin, 2022-04-26 more...
1. Ld7+! Ke4 2. Ld6 Kd5 3. Dd3#
1. ... Kg6 2. Dh8 Kf7 3. Dh7#
1. ... Kf4 2. Dd4+ Kf3 3. Lg4#
1. ... Kg6 2. Dh8 Kf7 3. Dh7#
1. ... Kf4 2. Dd4+ Kf3 3. Lg4#
Keywords: Miniature Collection (0293385), Aristocrat, Miniature, Rex solus, Checking key, Echo
Genre: 3#
FEN: 8/4B3/8/5k2/B7/2Q5/7K/8
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-11-22 more...
Genre: 3#
FEN: 8/4B3/8/5k2/B7/2Q5/7K/8
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-11-22 more...
1. Lb4+! Kxc2 2. Dd2+ Kb3 3. Ld6 Ka4 4. Db4#
1. ... Kxe2 2. Dd2+ Kf3 3. Ld6 Ke4 4. Dd3#
1. ... Kc1 2. La3+ Kb1 3. Dd4 Kxc2 4. Dd3#
Cook: 1. Lc3+
1. ... Kxe2 2. Dd2+ Kf3 3. Ld6 Ke4 4. Dd3#
1. ... Kc1 2. La3+ Kb1 3. Dd4 Kxc2 4. Dd3#
Cook: 1. Lc3+
Keywords: Miniature Collection (0087410), Minimal, Miniature, Checking key, Model mate
Genre: n#
Computer test: SCHRECKE
FEN: 8/3p4/3Q4/7K/8/8/2PBP3/3k4
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-04-30 more...
Genre: n#
Computer test: SCHRECKE
FEN: 8/3p4/3Q4/7K/8/8/2PBP3/3k4
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-04-30 more...
1. Tb4+! Kd3 2. Tg3+ Kc2 3. Tgb3 Kc1 4. Tc4#
1. ... Ke3 2. Tg3+ Kf2 3. Tbg4 Kf1 4. Tf4#
1. ... Kd5 2. Lf3+ Ke5 3. Lc7+ Kf5 4. Le4#
1. ... Ke5 2. Lc7+ Kd5 3. Lf3+ Kc5 4. Ld6#
1. ... Ke3 2. Tg3+ Kf2 3. Tbg4 Kf1 4. Tf4#
1. ... Kd5 2. Lf3+ Ke5 3. Lc7+ Kf5 4. Le4#
1. ... Ke5 2. Lc7+ Kd5 3. Lf3+ Kc5 4. Ld6#
1. Lc5+! Sd4+ 2. Dxd4+ Ke2! 3. Dxe4+ Kf1 4. Dxd3+ Ke1 5. De3+ Kd1 6. Dxf3+ Ke1 7. Lxf2+ Kf1 8. Le3+ Ke1 9. Df2+ Kd1 10. Dxd2#
2. ... Kf4? 3. De5+ Kg4 4. Lxf2 nebst matt
"Symmetrische Glocke mit asymmetrischer Lösung." [PH] Nach 1.Lg5+? Sf4+ 2.Dxf4+ Kd4 3.De5+ Kc4 4.Lxd2 Kb3! entkommt der sK. Als "reichlich Schachorgelei" empfand dies Eberhard Schulze. Ja, aber die Eindeutigkeit ist hier erstaunlich! (Lösungsbesprechung)
2. ... Kf4? 3. De5+ Kg4 4. Lxf2 nebst matt
"Symmetrische Glocke mit asymmetrischer Lösung." [PH] Nach 1.Lg5+? Sf4+ 2.Dxf4+ Kd4 3.De5+ Kc4 4.Lxd2 Kb3! entkommt der sK. Als "reichlich Schachorgelei" empfand dies Eberhard Schulze. Ja, aber die Eindeutigkeit ist hier erstaunlich! (Lösungsbesprechung)
Keywords: Asymmetrical solution, Symbol problem, Symmetrical position, Checking key, Perpetual check
FEN: 8/4B3/4K3/4Q3/4p3/3pkp2/2ppnpp1/8
Input: Gunter Jordan, 2011-07-04
Last update: Gunter Jordan, 2021-07-14 more...
FEN: 8/4B3/4K3/4Q3/4p3/3pkp2/2ppnpp1/8
Input: Gunter Jordan, 2011-07-04
Last update: Gunter Jordan, 2021-07-14 more...
1. a8=G+! Kb3 2. b8=G+ Kc3 3. c8=G+ Kd2 4. d8=G+ Ke2 5. e8=G+ Kf2 6. f8=G+ Kxg1 7. g8=G+ Kh1 8. h8=G#
Duplicate Diagram: P0574294
Keywords: Promotion (GGGGGGGG), konsekutive Umwandlungen 8 (GGGGGGGG), Promotion key, Checking key, Perpetual check, Promotion to fairy pieces
Pieces: = Grasshopper (G)
Genre: Fairies
FEN: 8/PPPPPPPP/8/8/ppp5/k2ppp2/6pp/1K1*2Qr1*2Q1
Input: Hans Gruber, 2011-10-09
Last update: Achim Schöneberg, 2024-03-19 more...
Pieces: = Grasshopper (G)
Genre: Fairies
FEN: 8/PPPPPPPP/8/8/ppp5/k2ppp2/6pp/1K1*2Qr1*2Q1
Input: Hans Gruber, 2011-10-09
Last update: Achim Schöneberg, 2024-03-19 more...
44 - P1233076
Mirko Degenkolbe
Steven B. Dowd
4705 Freie Presse (Chemnitz) 06/08/2009
nach N. Sinowjew
(4+3)
#12
Mirko Degenkolbe
Steven B. Dowd
4705 Freie Presse (Chemnitz) 06/08/2009
nach N. Sinowjew
(4+3)
#12
1. Sf8-g6+! hxg6 2. Lxg6 Kg8 3. Se6 Kh8 4. Kb4 Kg8 5. Kc5 Kh8 6. Kd6 Kg8 7. Ke7 Kh8 8. Sf8 Kg8 9. Lh7+ Kh8 10. Kf7 g6,g5 11. Lg8 g5,g4 12. Sf8-g6#
Meeraner, Urform, Themafiguren: wS + wS
Meeraner, Urform, Themafiguren: wS + wS
Felber, Volker: Nach N. Sinowjew (= P1171826) auf Bitte der Autoren am 17.09.2009 hinzugefügt (wie in der Lösungsbesprechung vom 03.09.2009 vorgeschlagen). (2014-10-13)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-02)
comment
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-02)
comment
Keywords: Meerane-Thema, Checking key, Sacrifice key, Miniature, Corner mate, Model mate
Genre: n#
FEN: 5N1k/5Bpp/8/8/3N4/K7/8/8
Input: Frank Müller, 2012-02-22
Last update: Gunter Jordan, 2019-07-11 more...
Genre: n#
FEN: 5N1k/5Bpp/8/8/3N4/K7/8/8
Input: Frank Müller, 2012-02-22
Last update: Gunter Jordan, 2019-07-11 more...
1. 0-0-0?,Td1? patt!
1. Db8+! Kd4 2. De5+ Kxe5 3. 0-0-0 T~ 4. Txe6#
1. ... Kd5 2. De5+ Kc6 3. d8=S Sxd8 4. Tc7#
1. Db8+! Kd4 2. De5+ Kxe5 3. 0-0-0 T~ 4. Txe6#
1. ... Kd5 2. De5+ Kc6 3. d8=S Sxd8 4. Tc7#
Keywords: Checking key, Kraftopfer
Genre: n#
FEN: 7Q/3PR3/1P2nrp1/P3k1N1/6P1/6P1/2P5/R3K3
Input: Felber, Volker, 2012-05-14
Last update: Felber, Volker, 2012-05-14 more...
Genre: n#
FEN: 7Q/3PR3/1P2nrp1/P3k1N1/6P1/6P1/2P5/R3K3
Input: Felber, Volker, 2012-05-14
Last update: Felber, Volker, 2012-05-14 more...
1. Dc7+ Kd5 2. Td6+ Ke5 3. f4+ exf3ep 4. Te6+ Kd5 5. e4+ dxe3ep 6. Dd7+ Kc5 7. d4+ cxd3ep 8. Sb7+ Kc4 9. Tc6+ Kb5 10. Tg6+ Kc4 11. Db5+ Kxb5 12. c4+ bxc3ep#
Keywords: En passant (4x), Checking key, Batteriematt horizontal, Line opening
Genre: s#
FEN: 3N4/5Qn1/2R4p/4k3/rpppp1Kp/8/2PPPPb1/B1R5
Reprints: 326 Versunkene Schätze , p. 138, 1998
Input: Frank Müller, 2012-06-23
Last update: Dieter Berlin, 2022-10-14 more...
Genre: s#
FEN: 3N4/5Qn1/2R4p/4k3/rpppp1Kp/8/2PPPPb1/B1R5
Reprints: 326 Versunkene Schätze , p. 138, 1998
Input: Frank Müller, 2012-06-23
Last update: Dieter Berlin, 2022-10-14 more...
1. Tb5+! c6 2. Kxc6 a1=D 3. Kc7+ Ka7 4. Tb7+ Ka8 5. Tb8+ Ka7 6. Ta8#
4. ... Ka6 5. Le2+ Ka5 6. Ta7# 2. ... Ka7 3. Tb7+ Ka8 4. Kb6 ... 5. Ta7+ Kb8 6. Ta8#
4. ... Ka6 5. Le2+ Ka5 6. Ta7# 2. ... Ka7 3. Tb7+ Ka8 4. Kb6 ... 5. Ta7+ Kb8 6. Ta8#
1. Ld5? Tc8!
1. Lc6? d5!
1. Lg5+! Kg4 2. Le7+ Kf4 3. Lxd6+ Lxd6 4. Lc6
1. Lc6? d5!
1. Lg5+! Kg4 2. Le7+ Kf4 3. Lxd6+ Lxd6 4. Lc6
Keywords: Checking key, Preplan, Bishop sacrifice
Genre: n#
FEN: 1b3r2/q6r/pp1p1BR1/5p1n/3P1k2/2R4p/2K5/7B
Reprints: 134 Problemschach-Jahrbuch 1993 D , p. 64, 1993
Input: Felber, Volker, 2013-02-21
Last update: Dieter Berlin, 2023-05-23 more...
Genre: n#
FEN: 1b3r2/q6r/pp1p1BR1/5p1n/3P1k2/2R4p/2K5/7B
Reprints: 134 Problemschach-Jahrbuch 1993 D , p. 64, 1993
Input: Felber, Volker, 2013-02-21
Last update: Dieter Berlin, 2023-05-23 more...
49 - P1263588
Bernhard Schauer
1871 Deutsche Schachblätter 03/1976
3. ehrende Erwähnung
Berlin-Thema-Turnier
(11+7)
#7
Bernhard Schauer
1871 Deutsche Schachblätter 03/1976
3. ehrende Erwähnung
Berlin-Thema-Turnier
(11+7)
#7
1. f4? Le4#
1. Lc5+! Ke5 2. c7 La4 3. Ld4+ Kd6 4. f4 Lc6+ 5. Sxc6 ... 6. Lc5+
1. Lc5+! Ke5 2. c7 La4 3. Ld4+ Kd6 4. f4 Lc6+ 5. Sxc6 ... 6. Lc5+
Keywords: Berlin Theme, Checking key
Genre: n#
FEN: nNB5/4p2r/2PkN3/6P1/1PPB2P1/b4P2/2b4p/7K
Input: Felber, Volker, 2013-03-01
Last update: Dieter Berlin, 2023-02-25 more...
Genre: n#
FEN: nNB5/4p2r/2PkN3/6P1/1PPB2P1/b4P2/2b4p/7K
Input: Felber, Volker, 2013-03-01
Last update: Dieter Berlin, 2023-02-25 more...
* 1. ... Kxf4 2. Txd4#
1. Sg3+! Kxf4 2. Sh1 Ke4,Kg4 3. Sf2 Kf4 4. Tf3#,g3# (Dual)
2. ... Kg4 3. Sf2 Kh4,Kh5 4. Th3#
1. Sg3+! Kxf4 2. Sh1 Ke4,Kg4 3. Sf2 Kf4 4. Tf3#,g3# (Dual)
2. ... Kg4 3. Sf2 Kh4,Kh5 4. Th3#
Keywords: Checking key, Model mate
Genre: n#
FEN: 8/5p2/5K2/3p1P2/3pkN2/3R4/6P1/5N2
Input: Felber, Volker, 2013-09-26
Last update: Felber, Volker, 2021-03-14 more...
Genre: n#
FEN: 8/5p2/5K2/3p1P2/3pkN2/3R4/6P1/5N2
Input: Felber, Volker, 2013-09-26
Last update: Felber, Volker, 2021-03-14 more...
1. a8=T+ Kb6 2. b8=D+ Kxc6 3. d8=S+ Kd7 4. c8=L+ Kxd8 5. La6+ Kd7 6. Lb5+ Ke6 7. De8+ Kf6 8. De7+ Kg6 9. Le8+ Kh6 10. Df6+ Kh7 11. Lg6+ Kh6 12. Lf7+ Kh7 13. Dg6+ Kh8 14. Dh6+ Lxh6#
Keywords: Allumwandlung, Königslenkung, konsekutive Umwandlungen 4 (TDSL), under-promotion key, Checking key, Perpetual check, Antiphönix, Königswanderung, Edge to edge
Genre: s#
FEN: 5K2/PPPP4/k1Bp4/2pp1p2/8/4b3/8/r3r3
Input: Frank Müller, 2013-11-05
Last update: Gunter Jordan, 2022-08-15 more...
Genre: s#
FEN: 5K2/PPPP4/k1Bp4/2pp1p2/8/4b3/8/r3r3
Input: Frank Müller, 2013-11-05
Last update: Gunter Jordan, 2022-08-15 more...
1. Sfxe7+! exd5+ 2. Sxd5+ Sef6+,Shf6+ 3. Sdxf6+ d5+ 4. Sxd5+ Sf6+ 5. Sdxf6+ d5+ 6. Sxd5+ Te7+ 7. Sdxe7+ Ld5+ 8. Sxd5+ Te7+ 9. Sdxe7+ f5+ 10. Sxf5+ De7+ 11. Sfxe7#
correction of P1298046
Henrik Juel: 21 consecutive checks; unfortunately, the position is illegal.
White never captured, while black pawns captured six times by axbxcxd, b7xc6, c7xd6, and h7xg6; but [Pf2] could not have been captured.
Nowadays it is rare to see an illegal prize winner, so the diagram may be incorrect (Pg2?) (2015-02-25)
Henrik Juel: Now I see that Jacques, in his comment to P1298046, gave this position, so my last sentence does not apply (2015-02-25)
Henrik Juel: The illegality is even 'worse' than I first thought, because [Pe2] could not have been captured either (2015-02-27)
James Malcom: I think it would be nice to have a legal version of this record. To do this, I propose we shorten the solution until a legal position is reached.
A #9 with 33B2N1/qrrp1ppn/1Ppp1np1/2QN2k1/3PKR2/8/b2p2P1/8 seems legal, no? (2021-02-06)
Anton Baumann: störender Dual in der Lösung: ... 7.Sde7+ f5+ 8.Sxf5+ Te7+ 9.Dxe7+,Lxe7+,Sxe7+ ...
Die Stellung wird legal mit schwarzer Umwandlungsfigur: d2=sT! Aber es bleibt der Dual in der Lösung.
Mögliche legale Stellung, ohne Dual in der Lösung: a7=sT, b7=sD, -sBc6, wBb6 nach c6 (10+15) #10
Lösung: 1.Sfe7+ exd5+ ... 7.Sde7+ Ld5+ 8.Dxd5+ f5+ 9.Sxf5+ De7+ 10.Sxe7# (2021-02-11)
comment
Henrik Juel: 21 consecutive checks; unfortunately, the position is illegal.
White never captured, while black pawns captured six times by axbxcxd, b7xc6, c7xd6, and h7xg6; but [Pf2] could not have been captured.
Nowadays it is rare to see an illegal prize winner, so the diagram may be incorrect (Pg2?) (2015-02-25)
Henrik Juel: Now I see that Jacques, in his comment to P1298046, gave this position, so my last sentence does not apply (2015-02-25)
Henrik Juel: The illegality is even 'worse' than I first thought, because [Pe2] could not have been captured either (2015-02-27)
James Malcom: I think it would be nice to have a legal version of this record. To do this, I propose we shorten the solution until a legal position is reached.
A #9 with 33B2N1/qrrp1ppn/1Ppp1np1/2QN2k1/3PKR2/8/b2p2P1/8 seems legal, no? (2021-02-06)
Anton Baumann: störender Dual in der Lösung: ... 7.Sde7+ f5+ 8.Sxf5+ Te7+ 9.Dxe7+,Lxe7+,Sxe7+ ...
Die Stellung wird legal mit schwarzer Umwandlungsfigur: d2=sT! Aber es bleibt der Dual in der Lösung.
Mögliche legale Stellung, ohne Dual in der Lösung: a7=sT, b7=sD, -sBc6, wBb6 nach c6 (10+15) #10
Lösung: 1.Sfe7+ exd5+ ... 7.Sde7+ Ld5+ 8.Dxd5+ f5+ 9.Sxf5+ De7+ 10.Sxe7# (2021-02-11)
comment
Keywords: Illegal position, Consecutive checks (21), Checking key, Construction task, Construction record, Move Length Record
Genre: n#
FEN: 3Bn1N1/qrrpbppn/1Pppp1p1/2QR1Nk1/3PKR2/8/b2p2P1/8
Input: A.Buchanan, 2015-02-25
Last update: James Malcom, 2021-02-07 more...
Genre: n#
FEN: 3Bn1N1/qrrpbppn/1Pppp1p1/2QR1Nk1/3PKR2/8/b2p2P1/8
Input: A.Buchanan, 2015-02-25
Last update: James Malcom, 2021-02-07 more...
1. b8=D+! Kd7 2. e8=T c5 3. Dd8+ Kc6 4. a8=D+ Kb5 5. Ddb8+ Kc4 6. Te1 Kd4 7. h8=L+ Kc4 8. Kd1 Kd3 9. Df4 c4 10. Lb2 c3 11. Lc1 c2#
Keywords: Kindergarten Problem, konsekutive Umwandlungen 4 (DTDL), Pawn mate, under-promotion, Minimal (s), Miniature, Selfblock, Model mate, Checking key, Promotion key, Flight taking
Genre: s#
FEN: 8/PPk1P2P/2p5/8/8/8/2K5/8
Reprints: 14) idee & form 143, p. 4843, 07/2019
Input: Frank Müller, 2015-04-11
Last update: Rainer Staudte, 2023-01-19 more...
Genre: s#
FEN: 8/PPk1P2P/2p5/8/8/8/2K5/8
Reprints: 14) idee & form 143, p. 4843, 07/2019
Input: Frank Müller, 2015-04-11
Last update: Rainer Staudte, 2023-01-19 more...
1. g6? e4 2. Sf7 e3 3. Sg5+ Kf4 4. Sh2 e2 5. Shf3 Kg3 6. Kh6 Kg4 remis
1. Sg6? Kf2 2. Sh2 Ld2! 3. Sg4+ Ke2! 4. Se7 Lxg5 5. Kxg5 e4 6. Sf5 e3 remis
1. Sh2+? Kg3 2. Sg4 e4 3. Sf7 Kf4 4. Sfe5 e3 5. g6 e2 6. g7 e1=D 7. Sd3+ Kg3 8. Sxe1 Lxg7 remis
1. Sd2+! Lxd2 2. g6 e4 3. g7 e3 4. Sg6! e2 5. Sh4+ Kf2 6. g8=D e1=D 7. Dg2+! Ke3 8. Dh3+ Ke2 9. Df3#
4. g8=D? e2 5. Sg6 e1=D 6. Sh4+ Ke2 7. Dg4+ Kd3 remis
1. ... Kf4 2. Se4! Lb4 3. g6 Lf8 4. Sc5 Kf5 5. Sf7 Lg7 6. Sd6+ gewinnt
1. ... Ke3 2. Se4 Lb4 3. g6 Lf8 4. Sg5 Lg7 5. Shf7 gewinnt"
1. Sg6? Kf2 2. Sh2 Ld2! 3. Sg4+ Ke2! 4. Se7 Lxg5 5. Kxg5 e4 6. Sf5 e3 remis
1. Sh2+? Kg3 2. Sg4 e4 3. Sf7 Kf4 4. Sfe5 e3 5. g6 e2 6. g7 e1=D 7. Sd3+ Kg3 8. Sxe1 Lxg7 remis
1. Sd2+! Lxd2 2. g6 e4 3. g7 e3 4. Sg6! e2 5. Sh4+ Kf2 6. g8=D e1=D 7. Dg2+! Ke3 8. Dh3+ Ke2 9. Df3#
4. g8=D? e2 5. Sg6 e1=D 6. Sh4+ Ke2 7. Dg4+ Kd3 remis
1. ... Kf4 2. Se4! Lb4 3. g6 Lf8 4. Sc5 Kf5 5. Sf7 Lg7 6. Sd6+ gewinnt
1. ... Ke3 2. Se4 Lb4 3. g6 Lf8 4. Sg5 Lg7 5. Shf7 gewinnt"
Anton Baumann: Das Probespiel 1.g6 dringt durch: 1. ... e4 2.Sf7 e3 3.Sg5+ Kf4 4.Sg3! Kxg3? 5.Se4+ +_
Ferner NL: 1.Sf7 e4 2.g6 Lg7 3.Sd2+ Ke3 4.Sb3 Kd3 5.Sc5+ Ke3(Kd4? 6.Se6+) 6.Sg5 +_ (2022-09-27)
comment
Ferner NL: 1.Sf7 e4 2.g6 Lg7 3.Sd2+ Ke3 4.Sb3 Kd3 5.Sc5+ Ke3(Kd4? 6.Se6+) 6.Sg5 +_ (2022-09-27)
comment
Keywords: Remote selfblock (dl), konsekutive Umwandlungen 2 (Dd), Checking key
Genre: Studies
FEN: 7N/8/8/4p1PK/8/2b2k2/8/5N2
Input: Rainer Staudte, 2016-03-06
Last update: Alfred Pfeiffer, 2019-07-18 more...
Genre: Studies
FEN: 7N/8/8/4p1PK/8/2b2k2/8/5N2
Input: Rainer Staudte, 2016-03-06
Last update: Alfred Pfeiffer, 2019-07-18 more...
1. Dd6+ exd6+ 2. Kf4!
1. Dd4+! Kc6 2. Tb6+ Kc7 3. Dc5+ Kd7 4. Tb7+ Ke8 5. Tb8+ Kd7 6. Da7+ Kc6 7. Tb6+ Kc5 8. Lb4+ Kc4 9. Da6+ Kb3 10. Le1+ Kc2 11. De2+ Kc1 12. Ld2+ Kc2 13. Lf4+ Kc3 14. Dd2+ Kc4 15. Tb4+ Kc5 16. Dd6+ exd6#
1. Dd4+! Kc6 2. Tb6+ Kc7 3. Dc5+ Kd7 4. Tb7+ Ke8 5. Tb8+ Kd7 6. Da7+ Kc6 7. Tb6+ Kc5 8. Lb4+ Kc4 9. Da6+ Kb3 10. Le1+ Kc2 11. De2+ Kc1 12. Ld2+ Kc2 13. Lf4+ Kc3 14. Dd2+ Kc4 15. Tb4+ Kc5 16. Dd6+ exd6#
Henrik Juel: 3... Kd8+ 4.Tb8+ and s#15 (2023-12-08)
Henrik Juel: Popeye 4.61 with 'non 1 1 thr 0' founnd no flaws (2023-12-08)
comment
Henrik Juel: Popeye 4.61 with 'non 1 1 thr 0' founnd no flaws (2023-12-08)
comment
Keywords: Perpetual check, Checking key, Switchback (DTk), Logical Problem
Genre: s#
FEN: 7r/4pppb/8/B1k1K3/1R6/8/3Q4/8
Input: Marcin Banaszek, 2019-02-20
Last update: Gunter Jordan, 2023-12-08 more...
Genre: s#
FEN: 7r/4pppb/8/B1k1K3/1R6/8/3Q4/8
Input: Marcin Banaszek, 2019-02-20
Last update: Gunter Jordan, 2023-12-08 more...
1. exf8=D+? Kxf8 2. Sd7+ Kg7! Remiss
1. exf8=sS+? Sxe6! Schwarz gewinnt!
1. exf8=sL+? Lf8-e7! 2. Sd7 patt
1. exf8=sT+? Ld8-e7! 2. Kxc7 patt
1. exf8=sD+! De7 2. Sd7 Dxe6+ 3. fxe6 Ke7 4. Sf5+ Kxe6 5. Lg4!
1. ... Le7 2. Kxc7 Dg7 3. Sxe4 Dg6 4. fxg6
Cook: 1. exf8=D+ Kxf8 2. Kd7! Zugzwang!
1. exf8=sS+? Sxe6! Schwarz gewinnt!
1. exf8=sL+? Lf8-e7! 2. Sd7 patt
1. exf8=sT+? Ld8-e7! 2. Kxc7 patt
1. exf8=sD+! De7 2. Sd7 Dxe6+ 3. fxe6 Ke7 4. Sf5+ Kxe6 5. Lg4!
1. ... Le7 2. Kxc7 Dg7 3. Sxe4 Dg6 4. fxg6
Cook: 1. exf8=D+ Kxf8 2. Kd7! Zugzwang!
Reprints: Outrageous Chess Problems, Burt Hochberg, Page 84
Superproblem.ru: http://superproblem.ru/archive/raznoe/S_umor-1.html (Most of the moves are taken from here)
chessstackexchange.com: https://chess.stackexchange.com/questions/21489/how-likely-is-it-that-a-non-orthodox-promotion-is-optimal/26958#26958
James Malcom: How do you add in the author name exactly? It's Gyula Breyer. After about a month of not using my editing powers, here is the first problem I have chosen to enter in! I will be adding more joke promotion problems in here soon and classify them a little bit more. (2020-01-28)
Mario Richter: Fritz 6 gives
1. exf8=N+ Kxf8 2. Kd7 Ng5 3. Nc6 Bxe6+ 4. fxe6 Nxe6 5. Kxe6 Rg8 6. Nxd8 f5 7. Kf6 Rg6+ 8. Bxg6 hxg6 9. Ne6+ Ke8 10. Kxg6 f4 11. exf4 exf4 12. Nxf4
as a win for White (+7.44)
Can somebody with a stronger chess program find a better defense for Black? (2020-02-11)
James Malcom: It seems that 2. Kd7! is the one move that cooks this problem. The Black knight can’t move to release Black’s pieces as then Black will lose their bishop. 2. Nd7+ merely draws. (2020-02-12)
Peter Wong: Not only is there a cook, but the intention doesn't seem to work either. If you manually set up the position after 1.exf8=black queen for the Stockfish engine, it finds no clear win for White. (2020-02-12)
James Malcom: Well in the intention, if 1... Be7? then 2. Kc7 Qg7 3. Nxe4 Qg2 4. Nd6+ Kf8 5. Nd7+ Kg7 6. Ne8#. It's only after 1... Qe7 2. Nd7 Qex6 3. fxe6 Ke7 does it become a draw. It seems that all known tasks with White promoting to a Black queen are cooked. It should not be surprising, but it is indeed sad. Not even Bengston's draw study P1372297 is correct. It shouldn't be to hard to make a new, correct draw study, whether or not it's based on Bengston's work, but now a winning one seems further elusive as this seems to be the only way work of it's kind. (2020-02-13)
SP: After "1... Qe7 2. Nd7 Qex6 3. fxe6 Ke7" instead of a draw there is a mate in 5:
4.Sf5+ Ke6: 5.Lg4 Sd6,Sg5 6.Sc5+ & 7.Lh5+ or
4.-- Ke8 5.Kb7 (6.Kc8 & 7.e7) etc.
Did you perhaps mean 3.-- Le7? Breyer intended 4.Kc7: for that.
Further reprint: LXV p. 52 Boros / Lindner 1939 Anthology. (2022-05-17)
comment
Superproblem.ru: http://superproblem.ru/archive/raznoe/S_umor-1.html (Most of the moves are taken from here)
chessstackexchange.com: https://chess.stackexchange.com/questions/21489/how-likely-is-it-that-a-non-orthodox-promotion-is-optimal/26958#26958
James Malcom: How do you add in the author name exactly? It's Gyula Breyer. After about a month of not using my editing powers, here is the first problem I have chosen to enter in! I will be adding more joke promotion problems in here soon and classify them a little bit more. (2020-01-28)
Mario Richter: Fritz 6 gives
1. exf8=N+ Kxf8 2. Kd7 Ng5 3. Nc6 Bxe6+ 4. fxe6 Nxe6 5. Kxe6 Rg8 6. Nxd8 f5 7. Kf6 Rg6+ 8. Bxg6 hxg6 9. Ne6+ Ke8 10. Kxg6 f4 11. exf4 exf4 12. Nxf4
as a win for White (+7.44)
Can somebody with a stronger chess program find a better defense for Black? (2020-02-11)
James Malcom: It seems that 2. Kd7! is the one move that cooks this problem. The Black knight can’t move to release Black’s pieces as then Black will lose their bishop. 2. Nd7+ merely draws. (2020-02-12)
Peter Wong: Not only is there a cook, but the intention doesn't seem to work either. If you manually set up the position after 1.exf8=black queen for the Stockfish engine, it finds no clear win for White. (2020-02-12)
James Malcom: Well in the intention, if 1... Be7? then 2. Kc7 Qg7 3. Nxe4 Qg2 4. Nd6+ Kf8 5. Nd7+ Kg7 6. Ne8#. It's only after 1... Qe7 2. Nd7 Qex6 3. fxe6 Ke7 does it become a draw. It seems that all known tasks with White promoting to a Black queen are cooked. It should not be surprising, but it is indeed sad. Not even Bengston's draw study P1372297 is correct. It shouldn't be to hard to make a new, correct draw study, whether or not it's based on Bengston's work, but now a winning one seems further elusive as this seems to be the only way work of it's kind. (2020-02-13)
SP: After "1... Qe7 2. Nd7 Qex6 3. fxe6 Ke7" instead of a draw there is a mate in 5:
4.Sf5+ Ke6: 5.Lg4 Sd6,Sg5 6.Sc5+ & 7.Lh5+ or
4.-- Ke8 5.Kb7 (6.Kc8 & 7.e7) etc.
Did you perhaps mean 3.-- Le7? Breyer intended 4.Kc7: for that.
Further reprint: LXV p. 52 Boros / Lindner 1939 Anthology. (2022-05-17)
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Keywords: Joke, Joke promotion, Checking key
Genre: Studies
FEN: 1N1bknbr/2p1Pn1p/2K1Rp1p/4pP1B/p3p3/p3P1N1/P6P/8
Reprints: 102 Outrageous Chess Problems , p. 84, 2005
SuperProblem (Website) 08/08/2013
Input: James Malcom, 2020-01-28
Last update: James Malcom, 2023-09-04 more...
Genre: Studies
FEN: 1N1bknbr/2p1Pn1p/2K1Rp1p/4pP1B/p3p3/p3P1N1/P6P/8
Reprints: 102 Outrageous Chess Problems , p. 84, 2005
SuperProblem (Website) 08/08/2013
Input: James Malcom, 2020-01-28
Last update: James Malcom, 2023-09-04 more...
1. Dxa3+! Kc2 2. Dxb3+ Txb3 3. Se3+ fxe3 4. Lxd3+ Kxd3 5. 0-0-0#
Cook: Dual
2. Ta2+ Tb2 3. Txb2+ Kc1 4. Ta2+,Th2+,Tg2+,Tf2+,Te2+,Td2 Kb1 5. Sxc3#
Cook: Dual
2. Ta2+ Tb2 3. Txb2+ Kc1 4. Ta2+,Th2+,Tg2+,Tf2+,Te2+,Td2 Kb1 5. Sxc3#
"Trick 'o the trade.".
James Malcom: This is the oldest known problem that features the Belen theme. (2020-09-20)
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James Malcom: This is the oldest known problem that features the Belen theme. (2020-09-20)
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Keywords: Capture key, Castling as mating move (wl), Checking key, Sacrifice of white pieces, Belen Theme
Genre: n#
FEN: 3b4/8/7r/6q1/R4p2/nnpb4/Q7/RrkNKBN1
Reprints: (5) MatPlus.net Forum 3/10/2019
Input: Felber, Volker, 2020-03-08
Last update: James Malcom, 2020-09-21 more...
Genre: n#
FEN: 3b4/8/7r/6q1/R4p2/nnpb4/Q7/RrkNKBN1
Reprints: (5) MatPlus.net Forum 3/10/2019
Input: Felber, Volker, 2020-03-08
Last update: James Malcom, 2020-09-21 more...
1. Sg5+! hxg5 2. Kf3 Kh6 3. Kg2 Kh7 4. Kxh1 Kh6 5. Kg2 Kh7 6. Kf3 Kh6 7. Ke4 Kh7 8. Kd5 Kh6 9. Kc6 Kh7 10. Kb7 Kh6 11. Kxa7 Kh7 12. Kxa6 Kh6 13. Kxa5 Kh7 14. Kxa4 Kh6 15. b4 Kh7 16. b5 Kh6 17. b6 Kh7 18. b7 Kh6 19. b8=D Kh7 20. Dh2#
19. ... Lh7 20. Df8#
https://chess.stackexchange.com/a/28841/15543
19. ... Lh7 20. Df8#
https://chess.stackexchange.com/a/28841/15543
James Malcom: This is a wildly original problem as far as I can tell. Any anticipations or similar problems? (2020-03-14)
Gerald Ettl: 19.-Lh7 20.Df8#,Dh2# unbedeutender Dual. (2020-03-15)
Olaf Jenkner: Kein Dual, weil 19 ... Lh7 nicht die Drohung Dh2# pariert. (2020-03-15)
Gerald Ettl: Ich bezog mich auf das Wort -Dual- auf den ogigen Kommentar. (der jetzt geloescht ist) (2020-11-18)
Gerald Ettl: Ja, es ist kein Dual. (2020-11-18)
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Gerald Ettl: 19.-Lh7 20.Df8#,Dh2# unbedeutender Dual. (2020-03-15)
Olaf Jenkner: Kein Dual, weil 19 ... Lh7 nicht die Drohung Dh2# pariert. (2020-03-15)
Gerald Ettl: Ich bezog mich auf das Wort -Dual- auf den ogigen Kommentar. (der jetzt geloescht ist) (2020-11-18)
Gerald Ettl: Ja, es ist kein Dual. (2020-11-18)
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1. Te5+! Kd7 2. Kh3 Sxg6 3. Kh2 Tf1 4. Th5! Sf4 5. Th7+! Kd6 6. Tg7! Te1 7. Tg1=
5. ... Ke6 6. Te7+ Kf5 7. Te1=
5. ... Ke6 6. Te7+ Kf5 7. Te1=
Anton Baumann: Korrektur Lösung: ... 6.Tg7? Se2! und Schwarz gewinnt gemäss Nalimov.
Richtig ist: 6.Td7! (6. ... Kxd7? patt) K bel. 7.Td1 Txd1 patt. (2021-11-03)
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Richtig ist: 6.Td7! (6. ... Kxd7? patt) K bel. 7.Td1 Txd1 patt. (2021-11-03)
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Keywords: Checking key
Genre: Studies
FEN: 4k2n/8/6P1/5R2/7K/8/8/6rn
Input: Marcin Banaszek, 2020-05-14
Last update: Alfred Pfeiffer, 2020-05-14 more...
Genre: Studies
FEN: 4k2n/8/6P1/5R2/7K/8/8/6rn
Input: Marcin Banaszek, 2020-05-14
Last update: Alfred Pfeiffer, 2020-05-14 more...
60 - P1378840
Alois Wotawa
17 Deutsche Schachblätter 13-14, p. 101, 01/07/1941
6. Preis Studienturnier des Großdeutschen Schachbundes
PR Kurt Richter
(3+4)
Remis
Alois Wotawa
17 Deutsche Schachblätter 13-14, p. 101, 01/07/1941
6. Preis Studienturnier des Großdeutschen Schachbundes
PR Kurt Richter
(3+4)
Remis
1. Tb5+! Ka8 2. Tg5! Th6+ 3. Ka5 Txh5 4. Ka6! Th6+ 5. Ka5 Th2 6. Ka6 Kb8 7. Tg7!! Kc8 8. Kxa7! Th7 9. Ka8! Th2 10. Ka7=
1. Ta3+! Kh4 2. b7 Tb4 3. Txa4 Kh3 4. Ta3+! Kh4 5. Ta7 Kh3 6. Kg1 Tb2 7. Ta3+! Kh4 8. Ta4+ Kh3 9. Ta7 Tg2+ 10. Kf1 Tb2 11. Ke1 Kxh2 12. Ta2! +-
8. ... Kg5 9. Ta7 Kf5 10. Kf1 Ke5 11. h4! Kd6 12. h5 Kc7 13. h6! Th2 14. h7! +-
8. ... Kg5 9. Ta7 Kf5 10. Kf1 Ke5 11. h4! Kd6 12. h5 Kc7 13. h6! Th2 14. h7! +-
Anton Baumann: Widerlegung: 1.Ta3+ Kg4! 2.b7 Tc1+ 3.Kg2 Tc2+ 4.Kf1 Tb2 5.Txa4+ Kh3! =
4.Kg1 Tb2 5.Txa4+ Kf3! Remis nach Nalimov (2022-11-30)
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4.Kg1 Tb2 5.Txa4+ Kf3! Remis nach Nalimov (2022-11-30)
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1. Te1+! Kg2 2. Tg5+ Kf3 3. Lh5+ Ke4 4. Dc2+ Kd5 5. Lb8+ Ke6 6. Dc8+ Kf6 7. Tg6+ Kf7 8. Sg5+ Kf8 9. Kc7+ Ke7 10. De6+ Kf8 11. Dg8+ Ke7 12. Tg7+ Kf6 13. Tf7+ Ke5 14. Kc8+ Kd5 15. Tf5+ Kc6 16. Dd8 Lb7#
Award: moscowchess.org 08/2020
Judge Valery Surkov
Cook: Dual am 4. Zug
1. Te1+! Kg2 2. Tg5+ Kf3 3. Lh5+ Ke4 4. Sf2+! Kd5 5. Lf6,Lg7+ Kd6 6. Td1+ Ld5 7. Da6,Dd7+ Kc5 8. Db7 Kd6 9. Te5 Kc5 10. b3 Kd6 11. Kc8 Kc5 12. Ld8 Kd6 13. Te4,Te7 Kc5 14. Sd3+ Kd6 15. Db8+ Kc6 16. Te6+ Lxe6#
8. ... Kc4 9. b3+ Kc5 10. Te5 Kd6 11. Kc8
Award: moscowchess.org 08/2020
Judge Valery Surkov
Cook: Dual am 4. Zug
1. Te1+! Kg2 2. Tg5+ Kf3 3. Lh5+ Ke4 4. Sf2+! Kd5 5. Lf6,Lg7+ Kd6 6. Td1+ Ld5 7. Da6,Dd7+ Kc5 8. Db7 Kd6 9. Te5 Kc5 10. b3 Kd6 11. Kc8 Kc5 12. Ld8 Kd6 13. Te4,Te7 Kc5 14. Sd3+ Kd6 15. Db8+ Kc6 16. Te6+ Lxe6#
8. ... Kc4 9. b3+ Kc5 10. Te5 Kd6 11. Kc8
1. Kxc2+ Ld1+ 2. Kxd3 b4 3. Txb4 Lf3 4. Tc4 0-0-0#
3. ... Lb3 4. Txe4 Td1#
2. ... Kf1 3. Txb3 Lxb3 4. Kd2 Td1#
3. ... Lb3 4. Txe4 Td1#
2. ... Kf1 3. Txb3 Lxb3 4. Kd2 Td1#
Henrik Juel: This looks like a cooked h# (2020-09-20)
James Malcom: Probably, but I don't know whether it's a 3.1 helpmate or not, as I got this from YACPDB. Someone would have to check the original source. (2020-09-20)
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James Malcom: Probably, but I don't know whether it's a 3.1 helpmate or not, as I got this from YACPDB. Someone would have to check the original source. (2020-09-20)
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Keywords: Belen Theme (Normal & Anti-), Castling as mating move, Checking key
Genre: h#
FEN: 8/8/8/4p3/4P3/pPpPp3/P1P1B3/Rrk1K3
Input: James Malcom, 2020-09-20
Last update: Alfred Pfeiffer, 2020-09-22 more...
Genre: h#
FEN: 8/8/8/4p3/4P3/pPpPp3/P1P1B3/Rrk1K3
Input: James Malcom, 2020-09-20
Last update: Alfred Pfeiffer, 2020-09-22 more...
1. Th2+! Kf3 2. Tf2+ Kg4 3. Tf4+ Kh5 4. Th4+ Kg6 5. Th6+ Kf7 6. Tf6+ Ke8 7. Tf8+ Kd7 8. Td8+ Kc6 9. Td6+ Kb5 10. Tb6+ Kc4 11. Tb4+ Kd3 12. Td4+ Kc2 13. Td2+ Kb3 14. Ta3+ Kc4 15. Td4+ Kb5 16. Tb4+ Kc6 17. Tb6+ Kd7 18. Td6+ Ke8 19. Td8+ Kf7 20. Tf8+ Kg6 21. Tf6+ Kh5 22. Th6+ Kg4 23. Th4+ Kf3 24. Tf4+ Kg2 25. Tf2+ Kg1 26. Th2+ Kxf1 27. Tf2+ Kg1 28. Ta1+ e1=D,T,L,S 29. Txe1#
Der Führer der schwarzen Heerscharen ist im Verlauf des Kampfgetümmels von seinen Getreuen getrennt worden und befindet sich nunmehr zu seinem Entsetzen inmitten seiner blutgierigen Feinde. Tollkühn zieht der Held sein Schwert, um sich den Rückweg zu den Seinen zu erkämpfen. Da wird er von hinten von einem schwer bewaffneten Ritter angefallen, der, auf einem weißen Mustang reitend, die edle Beute lebend fangen will. Das Königspferd bekommt die Sporen und nun entspinnt sich folgende Hetzjagd auf Leben und Tod:
1. Th2+ Kf3 2. Tf2+ Kg4 3. Tf4+ Kh5 4. Th4+ Kg6 5. Th6+ Kf7 6. Tf6+ Ke8.
Mit keuchendem Atem flüchtet der König in bebuschtes Terrain ...
7. Tf8+ Kd7 8. Td8+ Kc6, doch auch hier findet er keinen Schutz, da ihm sein besser berittener Widersacher stets dicht auf den Fersen ist, 9. Td6+ Kb5 10. Tb6+ ... der ihm den Rückzug zum eigenen Lager blitzschnell verwehrt.
10. ... Kc4 Mit 'verkehrter Direktion' wird die Hetzjagd im Eilzugtempo fortgesetzt.
11. Tb4+ Kd3 12. Td4+ Kc2 13. Td2+ Kb3 14. Ta3+ ...
Der Lanzenstich eines neuen Feindes scheucht den armen Gehetzten nun wieder ins Getümmel der Feldschlacht zurück!
14. ... Kc4 15. Td4+ ... Wo er von seinem alten Verfolger mit Sehnsucht erwartet wird.
15. ... Kb5 16. Tb4+ Kc6 17. Tb6+ Kd7 18. Td6+ Ke8. 'Die hohle Gasse schein´ ich zu kennen, mein Rößlein, laß uns weiter rennen!'
19. Td8+ Kf7 20. Tf8+ Kg6 21. Tf6+ Kh5 22. Th6+ Kg4 23. Th4+ Kf3 24. Tf4+ Kg2. Am alten Standplatz wieder, der König das Schwert in die Erde rammt: 'A so ein Leben ist eh nix mehr wert, habt´s mi gern miteionander, i stürz´ mi ins Schwert!'
25. Tf2+ Kg1 26. Th2+ Kxf1 27. Tf2+ Kg1 28. Ta1+ e1=D 29. Txe1#
Dem Kunax voll Mut und ohne Bangen, ihm ist nun die Puste ausgegangen.!"
Cook: 3. Sh2+! Kxg3! 4. Tg1+ Kh4 5. Tf4+ Kh5! 6. Tf5+ Tg5! 7. Tgxg5+ Kh6 8. Tg1+ Kh7 9. Th5#
3. ... Kh5? 4. Tf5+ Tg5! 5. Txg5+ Kh6 6. Sg4+ Kh7 7. Sf6+ Kh8,Kh6 8. Txg8#
Der Führer der schwarzen Heerscharen ist im Verlauf des Kampfgetümmels von seinen Getreuen getrennt worden und befindet sich nunmehr zu seinem Entsetzen inmitten seiner blutgierigen Feinde. Tollkühn zieht der Held sein Schwert, um sich den Rückweg zu den Seinen zu erkämpfen. Da wird er von hinten von einem schwer bewaffneten Ritter angefallen, der, auf einem weißen Mustang reitend, die edle Beute lebend fangen will. Das Königspferd bekommt die Sporen und nun entspinnt sich folgende Hetzjagd auf Leben und Tod:
1. Th2+ Kf3 2. Tf2+ Kg4 3. Tf4+ Kh5 4. Th4+ Kg6 5. Th6+ Kf7 6. Tf6+ Ke8.
Mit keuchendem Atem flüchtet der König in bebuschtes Terrain ...
7. Tf8+ Kd7 8. Td8+ Kc6, doch auch hier findet er keinen Schutz, da ihm sein besser berittener Widersacher stets dicht auf den Fersen ist, 9. Td6+ Kb5 10. Tb6+ ... der ihm den Rückzug zum eigenen Lager blitzschnell verwehrt.
10. ... Kc4 Mit 'verkehrter Direktion' wird die Hetzjagd im Eilzugtempo fortgesetzt.
11. Tb4+ Kd3 12. Td4+ Kc2 13. Td2+ Kb3 14. Ta3+ ...
Der Lanzenstich eines neuen Feindes scheucht den armen Gehetzten nun wieder ins Getümmel der Feldschlacht zurück!
14. ... Kc4 15. Td4+ ... Wo er von seinem alten Verfolger mit Sehnsucht erwartet wird.
15. ... Kb5 16. Tb4+ Kc6 17. Tb6+ Kd7 18. Td6+ Ke8. 'Die hohle Gasse schein´ ich zu kennen, mein Rößlein, laß uns weiter rennen!'
19. Td8+ Kf7 20. Tf8+ Kg6 21. Tf6+ Kh5 22. Th6+ Kg4 23. Th4+ Kf3 24. Tf4+ Kg2. Am alten Standplatz wieder, der König das Schwert in die Erde rammt: 'A so ein Leben ist eh nix mehr wert, habt´s mi gern miteionander, i stürz´ mi ins Schwert!'
25. Tf2+ Kg1 26. Th2+ Kxf1 27. Tf2+ Kg1 28. Ta1+ e1=D 29. Txe1#
Dem Kunax voll Mut und ohne Bangen, ihm ist nun die Puste ausgegangen.!"
Cook: 3. Sh2+! Kxg3! 4. Tg1+ Kh4 5. Tf4+ Kh5! 6. Tf5+ Tg5! 7. Tgxg5+ Kh6 8. Tg1+ Kh7 9. Th5#
3. ... Kh5? 4. Tf5+ Tg5! 5. Txg5+ Kh6 6. Sg4+ Kh7 7. Sf6+ Kh8,Kh6 8. Txg8#
Motto: "Schön is so a Ringelspiel! Oder: 'Man steigt nach!'"
Diagramm und glossierte Lösung ohne konkrete Forderung abgedruckt (#29 muß also nicht stimmen)
more ...
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Diagramm und glossierte Lösung ohne konkrete Forderung abgedruckt (#29 muß also nicht stimmen)
more ...
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Keywords: Allumwandlung, unechte schwarze, Checking key
Genre: n#
FEN: qbN3b1/1pn1P1r1/8/4K3/p7/2P1B1Pp/1P2p1k1/R4N1R
Input: Mario Richter, 2020-09-26
Last update: Alfred Pfeiffer, 2020-10-02 more...
Genre: n#
FEN: qbN3b1/1pn1P1r1/8/4K3/p7/2P1B1Pp/1P2p1k1/R4N1R
Input: Mario Richter, 2020-09-26
Last update: Alfred Pfeiffer, 2020-10-02 more...
1. Tf2+! Kh1 2. Tf1 Sf5+! 3. Texf5 exf5 4. Lf3+! exf3 5. Kxf3 Dxb3+ 6. Le3+ Kh2 7. Tf2+ Kg1 8. Tb2+ Kf1 9. Tf2+! Ke1 10. Te2+! Kd1 11. Td2+ Ke1 12. Te2+ Sxe2 patt
Keywords: Checking key
Genre: Studies
FEN: 8/6n1/p3p3/P3R3/4p3/qP2K2p/6k1/2nB1RB1
Input: Marcin Banaszek, 2020-09-26
Last update: Marcin Banaszek, 2020-10-05 more...
Genre: Studies
FEN: 8/6n1/p3p3/P3R3/4p3/qP2K2p/6k1/2nB1RB1
Input: Marcin Banaszek, 2020-09-26
Last update: Marcin Banaszek, 2020-10-05 more...
1. Ta7-a8+! Kd8-c7 2. Db5-c4+ Kc7-b6 3. Dc4-b4+ Kb6-c7 4. Sd6-b5+ Kc7-b6 5. Ta8-b8+ Kb6-a6 6. Lh1-b7+ Ka6-b6 7. Lb7-d5+ Kb6-a6 8. Tb8-a8+ Ka6-b6 9. Sb5-d6+ Kb6-c7 10. Db4-c4+ Kc7-b6 11. Dc4-b5+ Kb6-c7 12. Ta8-a7+ Kc7-d8 13. Db5xe8+ Lh5xe8 14. Ta7-d7+ Le8xd7#
Keywords: Checking key
Genre: s#
FEN: 3kn2n/R7/3NK3/1Q5b/8/8/8/b6B
Input: Marcin Banaszek, 2020-09-27
Last update: Alfred Pfeiffer, 2020-10-07 more...
Genre: s#
FEN: 3kn2n/R7/3NK3/1Q5b/8/8/8/b6B
Input: Marcin Banaszek, 2020-09-27
Last update: Alfred Pfeiffer, 2020-10-07 more...
1. gxh6ep+! Kxf7 2. 0-0xg1! Sf6 3. e8=sS#!
28/3/1937-https://www.newspapers.com/clip/25408700/chess-by-herman-steiner/
"NELS NELSON
We have heretofore published many of Nelson's fine problems and should like to show any readers the more humorous side of his talent. This winter our distinguished friend is spending his vacation in Los Angles. It is with his kind permission that we are publishing this story and problem.
Nels Nelson, born in Denmark in 1871, emigrated to the United States when 12 years of age. He learned the moves of chess in Denmark and began solving and composing problems in 1894. He was chess editor of the Minneapolis State Chess Asccostion, 1911-1912, president of the Minnesota State Chess Asccostion, 19229-1930, and lives at Hopkins, Minn., a suburb of Minneapolis.
AN APRIL FOOL JOKE
A certain celebrated chess master, who we will designate as Mr. "X," while on in the provinces happened into a tavern which was the mecca of the village chess players. Mr. "X," very fond of practical jokes, conceived a plan of springing on one of the unsuspecting natives. Professing ignorance of the game, the champion of the club offered to teach Mr. "X" its intricacies. After showing Mr. "X' all of the moves with the exception of pawn promotion, pawn takes pawn, etc., and castling, the champion said the following: ""I have purposely omitted three of the maneuvers in chess, which to the beginner are somewhat difficult to grasp. They are pawn promotion-when a pawn reaches the eight rank it ceases to be a pawn but may but it may be converted to any piece on the board and assumes its function at once. It is thus theoretically possible to have as many as nine queens on the board at once, and so on down the line." The champion then went to explain the castling on the king and queen side and emphasized the importance of moving the king first. The act of pawn takes pawn "en passant" was then thoroughly explained and the actual game started with the champion giving odds of queen to Mr. "X," who proved to be a very apt pupil! Mr. "X" lost the first game in short order-walking boldly into a mating net. In the second game he gave the champion quite the battle and won the approbation of that was worthy. In the third game, the champion managed to trap Mr. "X's" queen but had to give up two pieces for it and saw that he had a lost game but continued on in the hope that his experienced opponent would make some mistake. When the game has reached the position in the diagram the champion was dumbfounded to hear Mr. "X" announce mate in three moves. "Impossible!" exclaimed the champion. "You should win, of course, but mate in three cant be done." "Well, if you have interpreted the move and rules correctly, I am certain I see a mate in three," said Mr. "X." "Of course I have interpreted the rules correctly, exclaimed the now irate champion: and I will lay you a wager of dinner for the members of the club that you fail to mate in three moves." "Done!" cried Mr. "X." By this time nearly every member in the club was watching the game with interest. Now, who won this wager? It will be shown in the solution April 11."
11/4/1937-https://www.newspapers.com/clip/25408721/chess-by-herman-steiner/
"SOLUTION TO PROBLEM 760 by N. Nelson: "April Fool Joke."
White: K. on K1 R. on Q7, and KR1: Kt. on KB7 and KB8: B, on QB5: P. on K7, KKt5, and KKt2, Black: K. on KKt2: R. on KKt1: Kt. on K1: B. on KKt8: P. on KR4. (Wh. 9: BL. 5.)
Many members of the club were very fine players and felt their champion would win. Curiously, most of them were pulling for Mr. "X," as the champion was somewhat of a braggard and if he won they felt they would be hearing about it for a long time. They were, therefore, keenly alert when Mr. "X" started to proceed the game. "My first move is pawn takes en passant," said the smiling Mr. "x." "Of course, I anticipated that move," replied the champion, "and I shall meet it with king takes knight." Oh well then I shall make for my second move, castle: taking the bishop," continued Mr. "X." "This move is according to your definition of castling, perfectly legitimate, as the king moves first, and the bishop being on the knight square, certainly is subject to capture." "Well," replied the champion, "I must say your interpretation is far fetched, but I will grant you even this point as I fail to see how you mate on the next move: you evidently overlook the fact that when you promote the pawn the king will be able to capture it. Of course, I am forced to interpose my knight and it is pinned, but the king will still be able to take care of that promoted pawn. " Well," smiled Mr. "X," "I shall, however, mate you by pawn to king eight, discovering check, as I shall claim a black knight for the promoted pawn, which, according to your interpretation of pawn promotion, is perfectly legitimate. You stated I might choose any piece on the board and, of course, as the black knight is the only piece that will mate, I naturally selected it."
Exit champion.
We are publishing the best solution sent in my Ladderite L. A. Post, incidentally only two others solved this April Fool Problem.
Problem 760 to complete the tale that Mr. Nelson started to what I believe to be the logical solution according to the rules given by the local champion.
1. White: Pawn takes pawn "en passant" check.
The local champion then captured the white knight reposing on his "bishop two."
1. Black: king takes knight.
"Now," continued Mr. "X" "I understand to quote you, the king moves firstl in castling."
"That is correct," agreed the champion.
Thereupon Mr. "X" executed the move in the prescribed manner by first moving his king to his king knight square and removing the champion's bishop and then setting his rook down on his king bishop square calling check.
The champion was nonplussed, for in stating the rules for "castling" he had failed to forsee a circumstance of this kind. He was forced to admit that, according to his own statement, such a move was possible But seeing in spite of this that it was still impossible to checkmate on the next move, he conceded the point and interposed his knight.
2. Black: Knight to king bishop three.
"Did you not say," resumed Mr. "X," "that in 'pawn promotion' you could reclaim to any piece on the board?"
"That is correct," conceded the champion, "but since you insist on taking me literally I might add that there is no "queen' on the board you may claim in one."
"In that case," stated Mr. "X," "I will be equally generous and present you with a 'knight.'"Whereupon Mr. "X" removed the pawn at king seven and placed a black 'knight' at king eight discovering checkmate to the champion's "king."
"Such a thing is impossible !" cried the outraged champion.
"Not at all," replied Mr. "X," "for according to your statement that "upon reaching the eight rank a pawn be converted to any piece on the board and assumes its function at once.'"
To this the other members agreed. So the champion held a dinner in honor of Mr. "X," the most apt pupil he had ever taught.
Respectfully yours,
L.A. Post
Seaman, First Class, U.S. Navy,
U.S..S Texas, San Pedro, Cal."
28/3/1937-https://www.newspapers.com/clip/25408700/chess-by-herman-steiner/
"NELS NELSON
We have heretofore published many of Nelson's fine problems and should like to show any readers the more humorous side of his talent. This winter our distinguished friend is spending his vacation in Los Angles. It is with his kind permission that we are publishing this story and problem.
Nels Nelson, born in Denmark in 1871, emigrated to the United States when 12 years of age. He learned the moves of chess in Denmark and began solving and composing problems in 1894. He was chess editor of the Minneapolis State Chess Asccostion, 1911-1912, president of the Minnesota State Chess Asccostion, 19229-1930, and lives at Hopkins, Minn., a suburb of Minneapolis.
AN APRIL FOOL JOKE
A certain celebrated chess master, who we will designate as Mr. "X," while on in the provinces happened into a tavern which was the mecca of the village chess players. Mr. "X," very fond of practical jokes, conceived a plan of springing on one of the unsuspecting natives. Professing ignorance of the game, the champion of the club offered to teach Mr. "X" its intricacies. After showing Mr. "X' all of the moves with the exception of pawn promotion, pawn takes pawn, etc., and castling, the champion said the following: ""I have purposely omitted three of the maneuvers in chess, which to the beginner are somewhat difficult to grasp. They are pawn promotion-when a pawn reaches the eight rank it ceases to be a pawn but may but it may be converted to any piece on the board and assumes its function at once. It is thus theoretically possible to have as many as nine queens on the board at once, and so on down the line." The champion then went to explain the castling on the king and queen side and emphasized the importance of moving the king first. The act of pawn takes pawn "en passant" was then thoroughly explained and the actual game started with the champion giving odds of queen to Mr. "X," who proved to be a very apt pupil! Mr. "X" lost the first game in short order-walking boldly into a mating net. In the second game he gave the champion quite the battle and won the approbation of that was worthy. In the third game, the champion managed to trap Mr. "X's" queen but had to give up two pieces for it and saw that he had a lost game but continued on in the hope that his experienced opponent would make some mistake. When the game has reached the position in the diagram the champion was dumbfounded to hear Mr. "X" announce mate in three moves. "Impossible!" exclaimed the champion. "You should win, of course, but mate in three cant be done." "Well, if you have interpreted the move and rules correctly, I am certain I see a mate in three," said Mr. "X." "Of course I have interpreted the rules correctly, exclaimed the now irate champion: and I will lay you a wager of dinner for the members of the club that you fail to mate in three moves." "Done!" cried Mr. "X." By this time nearly every member in the club was watching the game with interest. Now, who won this wager? It will be shown in the solution April 11."
11/4/1937-https://www.newspapers.com/clip/25408721/chess-by-herman-steiner/
"SOLUTION TO PROBLEM 760 by N. Nelson: "April Fool Joke."
White: K. on K1 R. on Q7, and KR1: Kt. on KB7 and KB8: B, on QB5: P. on K7, KKt5, and KKt2, Black: K. on KKt2: R. on KKt1: Kt. on K1: B. on KKt8: P. on KR4. (Wh. 9: BL. 5.)
Many members of the club were very fine players and felt their champion would win. Curiously, most of them were pulling for Mr. "X," as the champion was somewhat of a braggard and if he won they felt they would be hearing about it for a long time. They were, therefore, keenly alert when Mr. "X" started to proceed the game. "My first move is pawn takes en passant," said the smiling Mr. "x." "Of course, I anticipated that move," replied the champion, "and I shall meet it with king takes knight." Oh well then I shall make for my second move, castle: taking the bishop," continued Mr. "X." "This move is according to your definition of castling, perfectly legitimate, as the king moves first, and the bishop being on the knight square, certainly is subject to capture." "Well," replied the champion, "I must say your interpretation is far fetched, but I will grant you even this point as I fail to see how you mate on the next move: you evidently overlook the fact that when you promote the pawn the king will be able to capture it. Of course, I am forced to interpose my knight and it is pinned, but the king will still be able to take care of that promoted pawn. " Well," smiled Mr. "X," "I shall, however, mate you by pawn to king eight, discovering check, as I shall claim a black knight for the promoted pawn, which, according to your interpretation of pawn promotion, is perfectly legitimate. You stated I might choose any piece on the board and, of course, as the black knight is the only piece that will mate, I naturally selected it."
Exit champion.
We are publishing the best solution sent in my Ladderite L. A. Post, incidentally only two others solved this April Fool Problem.
Problem 760 to complete the tale that Mr. Nelson started to what I believe to be the logical solution according to the rules given by the local champion.
1. White: Pawn takes pawn "en passant" check.
The local champion then captured the white knight reposing on his "bishop two."
1. Black: king takes knight.
"Now," continued Mr. "X" "I understand to quote you, the king moves firstl in castling."
"That is correct," agreed the champion.
Thereupon Mr. "X" executed the move in the prescribed manner by first moving his king to his king knight square and removing the champion's bishop and then setting his rook down on his king bishop square calling check.
The champion was nonplussed, for in stating the rules for "castling" he had failed to forsee a circumstance of this kind. He was forced to admit that, according to his own statement, such a move was possible But seeing in spite of this that it was still impossible to checkmate on the next move, he conceded the point and interposed his knight.
2. Black: Knight to king bishop three.
"Did you not say," resumed Mr. "X," "that in 'pawn promotion' you could reclaim to any piece on the board?"
"That is correct," conceded the champion, "but since you insist on taking me literally I might add that there is no "queen' on the board you may claim in one."
"In that case," stated Mr. "X," "I will be equally generous and present you with a 'knight.'"Whereupon Mr. "X" removed the pawn at king seven and placed a black 'knight' at king eight discovering checkmate to the champion's "king."
"Such a thing is impossible !" cried the outraged champion.
"Not at all," replied Mr. "X," "for according to your statement that "upon reaching the eight rank a pawn be converted to any piece on the board and assumes its function at once.'"
To this the other members agreed. So the champion held a dinner in honor of Mr. "X," the most apt pupil he had ever taught.
Respectfully yours,
L.A. Post
Seaman, First Class, U.S. Navy,
U.S..S Texas, San Pedro, Cal."
Henrik Juel: Some help is needed here, James
At least for me (2020-10-01)
A.Buchanan: Hi Henrik I am guessing it’s a cheatyface Valladao:
1. gxh6ep+ Kxf7 2. 0-0+ Sf6 3. f8=sS#
No proof for the ep, castling with capture and promotion to black officer (2020-10-02)
James Malcom: Bingo Andrew! (2020-10-02)
Henrik Juel: Even though I ought to stand by my fellow danish author:
This is a most crude 'joke' problem, especially the 'castling' with capture (2020-10-02)
A.Buchanan: It's kind of a running gag: three silly jokettes which do combine relatively harmoniously (2020-10-02)
A.Buchanan: 1. ... Kf6 allows a short mate, robbing White of the Valladao. 4nNbn/3RP1kN/8/6Pp/8/8/8/4K1bR is the best I can find, fixing the problem, and with less material (2020-10-02)
A.Buchanan: I was hoping that someone would spot that I have shifted a unit to h7 - i.e. the e.p. is even more Foolish :-) I claim it "improves" the problem because currently the e.p. *might* be legal :-) If this is too crude for some, then 4nNr1/3RP1k1/6N1/4P1Pp/8/8/8/4K1bR works. Note you need sTg8 to prevent 2. Sh8#, but wSg6 is blocking g-file, so wBg2 is still free to find other duties on e5. (2020-10-03)
James Malcom: Excellent improvements, Andrew! (2020-10-06)
A.Buchanan: Thanks James: do you think the one with Sh7 is excessively silly? (2020-10-06)
James Malcom: Yes, 'd say a bit too silly. (2020-10-16)
more ...
comment
At least for me (2020-10-01)
A.Buchanan: Hi Henrik I am guessing it’s a cheatyface Valladao:
1. gxh6ep+ Kxf7 2. 0-0+ Sf6 3. f8=sS#
No proof for the ep, castling with capture and promotion to black officer (2020-10-02)
James Malcom: Bingo Andrew! (2020-10-02)
Henrik Juel: Even though I ought to stand by my fellow danish author:
This is a most crude 'joke' problem, especially the 'castling' with capture (2020-10-02)
A.Buchanan: It's kind of a running gag: three silly jokettes which do combine relatively harmoniously (2020-10-02)
A.Buchanan: 1. ... Kf6 allows a short mate, robbing White of the Valladao. 4nNbn/3RP1kN/8/6Pp/8/8/8/4K1bR is the best I can find, fixing the problem, and with less material (2020-10-02)
A.Buchanan: I was hoping that someone would spot that I have shifted a unit to h7 - i.e. the e.p. is even more Foolish :-) I claim it "improves" the problem because currently the e.p. *might* be legal :-) If this is too crude for some, then 4nNr1/3RP1k1/6N1/4P1Pp/8/8/8/4K1bR works. Note you need sTg8 to prevent 2. Sh8#, but wSg6 is blocking g-file, so wBg2 is still free to find other duties on e5. (2020-10-03)
James Malcom: Excellent improvements, Andrew! (2020-10-06)
A.Buchanan: Thanks James: do you think the one with Sh7 is excessively silly? (2020-10-06)
James Malcom: Yes, 'd say a bit too silly. (2020-10-16)
more ...
comment
Keywords: Joke, Valladao Task, Joke promotion (s), En passant as key, Castling, Checking key, under-promotion (s)
Genre: 3#
FEN: 4nNr1/3RPNk1/8/2B3Pp/8/8/6P1/4K1bR
Reprints: Los Angeles Times , p. 13, 11/4/1937
Input: James Malcom, 2020-10-01
Last update: James Malcom, 2021-02-23 more...
Genre: 3#
FEN: 4nNr1/3RPNk1/8/2B3Pp/8/8/6P1/4K1bR
Reprints: Los Angeles Times , p. 13, 11/4/1937
Input: James Malcom, 2020-10-01
Last update: James Malcom, 2021-02-23 more...
1. Lxg6+? Sxg6+ 2. Kc7!
1. Lf5-g4+! Kh5-h4 2. Le3-f2+ Kh4-g5 3. Lg4-e6+ Kg5-h5 4. Tg2-h2+ Kh5-g5 5. Lf2-h4+ Kg5-h5 6. Lh4-e1+ Kh5-g5 7. Th2-g2+ Kg5-h5 8. Le6-g4+ Kh5-g5 9. Lg4-e2+ Kg5-f5 10. Tg2-f2+ Kf5-g5 11. Td4-g4+ Kg5-h5 12. Tg4xc4+ Kh5-g5 13. Tc4-g4+ Kg5-h5 14. Tg4-d4+ Kh5-g5 15. Tf2-g2+ Kg5-f5 16. Le2-g4+ Kf5-g5 17. Le1-h4+ Kg5xh4 18. Lg4-f5+ Kh4-h5 19. Lf5xg6+ Se7xg6#
1. Lf5-g4+! Kh5-h4 2. Le3-f2+ Kh4-g5 3. Lg4-e6+ Kg5-h5 4. Tg2-h2+ Kh5-g5 5. Lf2-h4+ Kg5-h5 6. Lh4-e1+ Kh5-g5 7. Th2-g2+ Kg5-h5 8. Le6-g4+ Kh5-g5 9. Lg4-e2+ Kg5-f5 10. Tg2-f2+ Kf5-g5 11. Td4-g4+ Kg5-h5 12. Tg4xc4+ Kh5-g5 13. Tc4-g4+ Kg5-h5 14. Tg4-d4+ Kh5-g5 15. Tf2-g2+ Kg5-f5 16. Le2-g4+ Kf5-g5 17. Le1-h4+ Kg5xh4 18. Lg4-f5+ Kh4-h5 19. Lf5xg6+ Se7xg6#
Keywords: Logical Problem, Switchback (TTL, k), Line opening, discovered checkmate, Batteriematt diagonal, Battery creation, Discovered check, Checking key, Perpetual check
Genre: s#
FEN: 5q2/3pn3/1n1K1ppp/b4B1k/2pR4/4B3/6R1/2r5
Input: Marcin Banaszek, 2020-10-11
Last update: Gunter Jordan, 2020-10-11 more...
Genre: s#
FEN: 5q2/3pn3/1n1K1ppp/b4B1k/2pR4/4B3/6R1/2r5
Input: Marcin Banaszek, 2020-10-11
Last update: Gunter Jordan, 2020-10-11 more...
1. Te1+ Kxd5 2. Le5 hxg2 3. Sg6 g1=D 4. Se7#,Sf4#
Scan undeutlich, Feld c6 und a2 nicht sicher
Henrik Juel: Mate dual, also 4.Sf4# (2020-10-23)
comment
Henrik Juel: Mate dual, also 4.Sf4# (2020-10-23)
comment
Keywords: Checking key, Allumwandlung, unechte schwarze
Genre: n#
FEN: 7N/8/8/1K1R1P2/4k3/7p/P5PB/R7
Input: Mario Richter, 2020-10-23
Last update: Alfred Pfeiffer, 2020-10-23 more...
Genre: n#
FEN: 7N/8/8/1K1R1P2/4k3/7p/P5PB/R7
Input: Mario Richter, 2020-10-23
Last update: Alfred Pfeiffer, 2020-10-23 more...
1. bxc6+! Lc5 2. Le5 Td7 3. Lg6 Txa7,~ 4. Le4#
Co-Dual 3. Lh5 Txa7,~ 4. Lf3#
Co-Dual 3. Lh5 Txa7,~ 4. Lf3#
Keywords: Capture key, Checking key
Genre: n#
FEN: 8/N4B2/2prp3/RP1k4/5P2/b1BK4/8/8
Input: Mario Richter, 2020-10-23
Last update: Alfred Pfeiffer, 2020-10-23 more...
Genre: n#
FEN: 8/N4B2/2prp3/RP1k4/5P2/b1BK4/8/8
Input: Mario Richter, 2020-10-23
Last update: Alfred Pfeiffer, 2020-10-23 more...
1. b4+! e5 2. dxe6ep Kg6 3. c4+ f5 4. Lxf5+ Kh6 5. d4+ g5 6. Lxg5#
3 pairs of pawn double-steps by White and Black
http://superproblem.ru/archive/probl/N/Malcom-6x-2020.gif
3 pairs of pawn double-steps by White and Black
http://superproblem.ru/archive/probl/N/Malcom-6x-2020.gif
Henrik Juel: Slightly damaged by late duals after 2... Dd4 (2020-10-24)
James Malcom: But those are irrelevant, Henrik. (2020-10-24)
comment
James Malcom: But those are irrelevant, Henrik. (2020-10-24)
comment
Keywords: En passant, Checking key
Genre: n#
FEN: 4nK2/q1N1pppr/b4k2/3P4/r5P1/p6N/1PPP4/QBB5
Input: James Malcom, 2020-10-24
Last update: Alfred Pfeiffer, 2020-10-24 more...
Genre: n#
FEN: 4nK2/q1N1pppr/b4k2/3P4/r5P1/p6N/1PPP4/QBB5
Input: James Malcom, 2020-10-24
Last update: Alfred Pfeiffer, 2020-10-24 more...
1. Tb1+! Sxb1 2. Da3+ Sxa3 3. 0-0+ Sb1 4. a8=T+ La7 5. d5+ e5 6. dxe6ep+ Tg7+ 7. Kh1 e2 8. Te1 h5 9. b8=D h4 10. Db7 h3 11. Dg2 hxg2#
1. d3-d4+! f7-f5 2. g5xf6ep+ Tg4-g6 3. 0-0+ Lf4-c1 4. Kg1-h1 h5-h4 5. Lg3-h2 h4-h3 6. f6-f7 b5-b4 7. f7-f8=L h6-h5 8. Lf8-d6 h5-h4 9. Lh2-g1 h3-h2 10. Ld6xh2 h4-h3 11. Tf2-g2 h3xg2#
Keywords: Checking key, En passant, Castling, under-promotion (L), Valladao Task, Pawn mate
Genre: s#
FEN: 8/5p1B/7p/1p4Pp/5br1/1N1P2B1/5R2/1k2K2R
Input: Marcin Banaszek, 2020-11-09
Last update: Alfred Pfeiffer, 2020-11-09 more...
Genre: s#
FEN: 8/5p1B/7p/1p4Pp/5br1/1N1P2B1/5R2/1k2K2R
Input: Marcin Banaszek, 2020-11-09
Last update: Alfred Pfeiffer, 2020-11-09 more...
a) 1. Th8+! Kxh8 2. Txh3+ Kg8 3. Th8+ Kxh8 4. Txh2+ Kg8 5. Th8+ Kxh8 6. Th1+ Kg8 7. Th8+ Kxh8 8. Th1+ Kg8 9. Th8+ Kxh8 10. Th1+ Kg8 11. Th8+ Kxh8 12. Th1+ Kg8 13. Th8+ Kxh8 14. Th1+ Kg8 15. Th8+ Kxh8 16. Th1+ Kg8 17. Th8+ Kxh8 18. Dh1+ Kg8 19. Dh7+ Kf8 20. Dh8+ Ke7 21. Dxg7+ Kd6,Kd8 22. Dc7#
b) 1. Th8+! Kxh8 2. Txh3+ Kg8 3. Th8+ Kxh8 4. Txh2+ Kg8 5. Th8+ Kxh8 6. Th1+ Kg8 7. Th8+ Kxh8 8. Th1+ Kg8 9. Th8+ Kxh8 10. Th1+ Kg8 11. Th8+ Kxh8 12. Th1+ Kg8 13. Th8+ Kxh8 14. Th1+ Kg8 15. Th8+ Kxh8 16. Th1+ Kg8 17. Th8+ Kxh8 18. Dh1+ Kg8 19. Dh7+ Kf8 20. Dh8+ Ke7 21. Dxg7+ Kd6,Kd8 22. Dc7+ Lxc7#
http://www.bestproblems.it/bppdf/BP2019(complete).pdf
"... details are everything ..."
b) 1. Th8+! Kxh8 2. Txh3+ Kg8 3. Th8+ Kxh8 4. Txh2+ Kg8 5. Th8+ Kxh8 6. Th1+ Kg8 7. Th8+ Kxh8 8. Th1+ Kg8 9. Th8+ Kxh8 10. Th1+ Kg8 11. Th8+ Kxh8 12. Th1+ Kg8 13. Th8+ Kxh8 14. Th1+ Kg8 15. Th8+ Kxh8 16. Th1+ Kg8 17. Th8+ Kxh8 18. Dh1+ Kg8 19. Dh7+ Kf8 20. Dh8+ Ke7 21. Dxg7+ Kd6,Kd8 22. Dc7+ Lxc7#
http://www.bestproblems.it/bppdf/BP2019(complete).pdf
"... details are everything ..."
Henrik Juel: Popeye 4.61 with 'opt thr 0' found no flaws in part a (2020-11-12)
Henrik Juel: ... and with 'opt thr 0 non 0 1' no flaws in part b (2020-11-12)
comment
Henrik Juel: ... and with 'opt thr 0 non 0 1' no flaws in part b (2020-11-12)
comment
Keywords: Task (Construction), Non-standard material, Räumung and Bahnung, Checking key
Genre: n#
FEN: q3r1k1/6p1/1K2p1P1/3rp3/7R/b4pRn/5R1p/QRRRRRR1
Input: James Malcom, 2020-11-12
Last update: Rainer Staudte, 2020-11-12 more...
Genre: n#
FEN: q3r1k1/6p1/1K2p1P1/3rp3/7R/b4pRn/5R1p/QRRRRRR1
Input: James Malcom, 2020-11-12
Last update: Rainer Staudte, 2020-11-12 more...
1. De7+ Dxe7 Tb8+ Dd8 3. Sf6#
im 'Album Roma' nicht explizit als Urdruck deklariert
SCHRECKE: C+, popeye 4.85 (2020-11-24)
comment
SCHRECKE: C+, popeye 4.85 (2020-11-24)
comment
Keywords: Checking key, Sacrifice key, Switchback (d), pin-mate
Genre: 3#
FEN: 3qk2r/3p1p2/4p3/7r/1Q2N3/B7/1R2PPP1/5K2
Input: Mario Richter, 2020-11-24
Last update: Gunter Jordan, 2020-11-24 more...
Genre: 3#
FEN: 3qk2r/3p1p2/4p3/7r/1Q2N3/B7/1R2PPP1/5K2
Input: Mario Richter, 2020-11-24
Last update: Gunter Jordan, 2020-11-24 more...
76 - P1383362
Sergey Smotrov
18013 Die Schwalbe 300 12/2019
Spezialpreis
PR Mark Erenburg
WCCI=7
(7+9)
s#20
Sergey Smotrov
18013 Die Schwalbe 300 12/2019
Spezialpreis
PR Mark Erenburg
WCCI=7
(7+9)
s#20
1. De5+? fxe5 2. Kg4,Kg5!
1. Td3+! Kc4 2. Ta3+ Kd4 3. Sc2+ Kd5 4. Lg2+ Kc4 5. Dc8+ Kb5 6. Sc3+ Kb6 7. Db7+ Kc5 8. Se4+ Kc4 9. Da6+ Kd5 10. Sxf6+ Kc5 11. Se4+ Kd5 12. Sc3+ Kc5 13. Db5+ Kd6 14. Db8+ Kc5 15. Sa4+ Kc4 16. Lf1+ Kd5 17. Sb4+ Kd4 18. Td3+ Kc4 19. Tf3+ Kd4 20. De5+ Lxe5#
1. Returns of white figures
2. Logic capture Pf6
3. The cross closed ring maneuver
White Q b8 – c8 – a6 – b5 – b8
4. Active blocking Rf3
1. Td3+! Kc4 2. Ta3+ Kd4 3. Sc2+ Kd5 4. Lg2+ Kc4 5. Dc8+ Kb5 6. Sc3+ Kb6 7. Db7+ Kc5 8. Se4+ Kc4 9. Da6+ Kd5 10. Sxf6+ Kc5 11. Se4+ Kd5 12. Sc3+ Kc5 13. Db5+ Kd6 14. Db8+ Kc5 15. Sa4+ Kc4 16. Lf1+ Kd5 17. Sb4+ Kd4 18. Td3+ Kc4 19. Tf3+ Kd4 20. De5+ Lxe5#
1. Returns of white figures
2. Logic capture Pf6
3. The cross closed ring maneuver
White Q b8 – c8 – a6 – b5 – b8
4. Active blocking Rf3
Keywords: Perpetual check, Checking key, Switchback (DTLSSk), Logical Problem
Genre: s#
FEN: 1Q3nr1/3pp1b1/5p1r/5P2/NN1k1K2/5R2/8/5B1n
Input: Gerd Wilts, 2020-12-25
Last update: Marcin Banaszek, 2022-09-02 more...
Genre: s#
FEN: 1Q3nr1/3pp1b1/5p1r/5P2/NN1k1K2/5R2/8/5B1n
Input: Gerd Wilts, 2020-12-25
Last update: Marcin Banaszek, 2022-09-02 more...
77 - P1385209
Aleksandr Semenenko
Internationaler Schachkompositionstag 04.01.2021, Abteilung h#n
Spezialpreis
PR Anatoli Karamanitz
(2+10)
h#7
0.1.1...
Aleksandr Semenenko
Internationaler Schachkompositionstag 04.01.2021, Abteilung h#n
Spezialpreis
PR Anatoli Karamanitz
(2+10)
h#7
0.1.1...
1. ... Lxg4+ 2. Ke4 Lc8 3. Tg5 Kc2 4. Df4 Kc3 5. Ld7 Kc4 6. Kf5+ Kd5 7. f6 Lxd7#
Keywords: Discovered check, bi-coloured Bristol, Remote selfblock, Klasinc theme (k-L, k-d, k-t, k-l), Line opening, Maslar theme, Minimal (L), Switchback (k), Checking key, Capture key, Selfblock
Genre: h#
FEN: 8/5p2/5qp1/2r2k1B/6p1/p6b/8/1Kn3n1
Input: Gunter Jordan, 2021-01-09
Last update: Gunter Jordan, 2021-01-09 more...
Genre: h#
FEN: 8/5p2/5qp1/2r2k1B/6p1/p6b/8/1Kn3n1
Input: Gunter Jordan, 2021-01-09
Last update: Gunter Jordan, 2021-01-09 more...
1. b7-b8=D+! Td8xb8 2. a7xb8=T+ Kb6xc7 3. Tb8-b7+ Kc7xc6 4. d7-d8=S+ Kc6-d5 5. Tb7-d7+ Se4-d6 6. Tf5xe5+ De3xe5 7. g7-g8=L+ Tf4-f7 8. Lf1-g2+ Sg1-f3 9. h5-h6 De5-f5 10. Kg6-h5 Df5-e5 11. Dg5-f5 De5xf5#
Keywords: Promotion (D), konsekutive Umwandlungen 4 (DTSL), Allumwandlung, under-promotion (TLS), Promotion key, Checking key
Genre: s#
FEN: 3r4/PPRP2P1/1kP3K1/4bRQP/1B2nrN1/2P1q3/3N4/5Bn1
Input: Marcin Banaszek, 2021-01-27
Last update: Rainer Staudte, 2023-01-19 more...
Genre: s#
FEN: 3r4/PPRP2P1/1kP3K1/4bRQP/1B2nrN1/2P1q3/3N4/5Bn1
Input: Marcin Banaszek, 2021-01-27
Last update: Rainer Staudte, 2023-01-19 more...
1. De5+! Kc4 2. De4+ Kc3! 3. Tc5+ Kb3 4. Tb5+ Kc3 5. Lb4+ Kb3 6. Lf8+ Kc3 7. Dc6+ Kd4 8. Tb4+ Ke5 9. Te4+ Kf5 10. De6+ Kg5 11. Dh6+ Kf5 12. Tf4+ Ke5 13. Dg5+ Ke6 14. De7+ Kd5 15. Dd7+ Ke5 16. Ld6+ Kd5 17. La3+! Ke5 18. Tf5+ Ke4 19. De6+ Kd4 20. Lxb2+ Txb2#
Judge Mihail Hramtsevic
Award 13.09.2021
Judge Mihail Hramtsevic
Award 13.09.2021
Keywords: Checking key, Perpetual check
Genre: s#
FEN: 8/4B3/4Q3/5R2/3k4/8/rp2K2n/r4n2
Input: Marcin Banaszek, 2021-01-29
Last update: Marcin Banaszek, 2021-09-14 more...
Genre: s#
FEN: 8/4B3/4Q3/5R2/3k4/8/rp2K2n/r4n2
Input: Marcin Banaszek, 2021-01-29
Last update: Marcin Banaszek, 2021-09-14 more...
80 - P1387366
Yuri Paramonov
Chorno-bili stezhyny 4/53, p. 36, 10-12/2016
3. ehrende Erwähnung
JT Waleri Stankewitsch-85
Abt. Miniaturen
PR Alexandr Semenenko
(2+4)
h#5*
Yuri Paramonov
Chorno-bili stezhyny 4/53, p. 36, 10-12/2016
3. ehrende Erwähnung
JT Waleri Stankewitsch-85
Abt. Miniaturen
PR Alexandr Semenenko
(2+4)
h#5*
* 1. ... Kd7 2. Sh8 Ld5 3. Lc6+ Ke7 4. Le8 Kf8 5. Lg6 Lg8#
1. Sh4+ Kd5 2. Kg6 Ke5 3. Kh5 Lc8 4. Le4 Kf4 5. Lg6 Lg4#
1. Sh4+ Kd5 2. Kg6 Ke5 3. Kh5 Lc8 4. Le4 Kf4 5. Lg6 Lg4#
Keywords: Discovered check, Aristocrat, Echo, Ideal mate, Miniature, Minimal (L), Checking key, Selfblock
Genre: h#
FEN: b7/1B5k/2K3nr/8/8/8/8/8
Input: Gunter Jordan, 2021-03-12
Last update: Gunter Jordan, 2021-03-12 more...
Genre: h#
FEN: b7/1B5k/2K3nr/8/8/8/8/8
Input: Gunter Jordan, 2021-03-12
Last update: Gunter Jordan, 2021-03-12 more...
81 - P1387491
Ronny Schreiber
10637 Schach 04/1985
Ehrende Erwähnung
Förderungsturnier des DSV, 1984
(6+9)
#7
Ronny Schreiber
10637 Schach 04/1985
Ehrende Erwähnung
Förderungsturnier des DSV, 1984
(6+9)
#7
1. Sxd5+ Ke4 2. Sf6+ Kf4 3. La7 Sc4 4. Sd5+ Ke4 5. S1c3+ Sxc3 6. Lf3+ Kd3 7. Sb4#
Keywords: Remote selfblock (ss), Capture key, Preplan, Checking key, Switchback (Sk), Block guiding
Genre: n#
FEN: 1B6/8/5NKp/n2pp3/5k2/6pp/n2pB1P1/3N4
Input: Rainer Staudte, 2021-03-17
Last update: Gunter Jordan, 2021-03-17 more...
Genre: n#
FEN: 1B6/8/5NKp/n2pp3/5k2/6pp/n2pB1P1/3N4
Input: Rainer Staudte, 2021-03-17
Last update: Gunter Jordan, 2021-03-17 more...
82 - P1387493
Yuri Paramonov
Chorno-bili stezhyny 4/53, p. 37, 10-12/2016
1. Lob
JT Waleri Stankewitsch-85
Abt. Miniaturen
PR Alexandr Semenenko
(3+3)
h#5
3.1...
Yuri Paramonov
Chorno-bili stezhyny 4/53, p. 37, 10-12/2016
1. Lob
JT Waleri Stankewitsch-85
Abt. Miniaturen
PR Alexandr Semenenko
(3+3)
h#5
3.1...
1) 1. Lb6 Sf2 2. Dh1+ Ke5 3. Kc6 Sf5 4. Kc5 Sd6 5. Dc6 Sd3#
2) 1. Da5+ Ke6 2. Ld4 Kf7 3. Kd6 Sf2 4. Ke5 Ke7 5. Dd5 Sd3#
3) 1. De8 Se4 2. Lb6 Sc5 3. Dc6+ Kd4 4. Kd6 Sg3 5. Lc7 Sf5#
2) 1. Da5+ Ke6 2. Ld4 Kf7 3. Kd6 Sf2 4. Ke5 Ke7 5. Dd5 Sd3#
3) 1. De8 Se4 2. Lb6 Sc5 3. Dc6+ Kd4 4. Kd6 Sg3 5. Lc7 Sf5#
Keywords: Aristocrat, Echo, Remote selfblock (in 2), Exchange of roles (S-S), Ideal mate, Miniature, Checking key (in 2), Selfblock
Genre: h#
FEN: 8/2k5/8/3K4/8/6N1/8/4q1bN
Input: Gunter Jordan, 2021-03-17
Last update: Alain Brobecker, 2021-10-22 more...
Genre: h#
FEN: 8/2k5/8/3K4/8/6N1/8/4q1bN
Input: Gunter Jordan, 2021-03-17
Last update: Alain Brobecker, 2021-10-22 more...
1. Df5+! Kh4 2. Dg5+ Kxh3 3. Tf3+ Kh2 4. Dg3+ Kh1 5. Dh3+ Kg1 6. Tg3+ Kf2 7. Dg2+ Ke1 8. Te3+ Kd1 9. De2+ Kc1 10. Tc3+ Kb1 11. Dc2+ Ka1 12. Dc1+ Ka2 13. Tc2+ Kb3 14. Db2+ Ka4 15. Tc4+ Ka5 16. Db4+ Ka6 17. Txc6+ Ka7 18. Db6+ Ka8 19. Da6+ Kb8 20. Tb6+ Kc7 21. Db7+ Kd8 22. Td6+ Ke8 23. Dd7+ Kf8 24. Tf6+ Sxf6#
Keywords: Checking key, Perpetual check
Genre: s#
FEN: 6nN/3Q3K/2p2RPP/4p2k/3P4/7N/8/8
Input: Marcin Banaszek, 2021-03-31
Last update: James Malcom, 2021-09-14 more...
Genre: s#
FEN: 6nN/3Q3K/2p2RPP/4p2k/3P4/7N/8/8
Input: Marcin Banaszek, 2021-03-31
Last update: James Malcom, 2021-09-14 more...
84 - P1388516
Jozef Holubec
1006 Pat a Mat 115 03/2021
2. ehrende Erwähnung
Pat a Mat 2020-2021
(7+2)
s#15
b) Tb5>b6
Jozef Holubec
1006 Pat a Mat 115 03/2021
2. ehrende Erwähnung
Pat a Mat 2020-2021
(7+2)
s#15
b) Tb5>b6
a) 1. Lg3-h4+! Ke7-d6 2. Df5-d5+ Kd6-c7 3. Dd5-b7+ Kc7-d6 4. Tb5-d5+ Kd6-e6 5. Td5-c5+ Ke6-d6 6. Lh4-e7+ De8xe7 7. Db7-b6+ Kd6-d7 8. Db6-c6+ Kd7-d8 9. Dc6-a8+ Kd8-d7 10. Da8-c8+ Kd7-d6 11. Tc5-c6+ Kd6-e5 12. Dc8-f5+ Ke5-d4 13. Tc6-c4+ Kd4xe3 14. Df5-f2+ Ke3-d3 15. Df2-e2+ De7xe2#
b) 1. Df5-f6+! Ke7-d7 2. Df6-d6+ Kd7-c8 3. Dd6-b8+ Kc8-d7 4. Tb6-b7+ Kd7-c6 5. Lb3-d5+ Kc6-c5 6. Lg3-d6+ Kc5-d4 7. Db8-a7+ Kd4-d3 8. Da7-a3+ Kd3-d4 9. Da3-c5+ Kd4-d3 10. Ld5-e4+ Kd3xe4 11. Tb7-b4+ Ke4-f3 12. Dc5-d5+ De8-e4 13. Dd5-d1+ Kf3xe3 14. Dd1-d2+ Ke3-f3 15. Dd2-e2+ De4xe2#
b) 1. Df5-f6+! Ke7-d7 2. Df6-d6+ Kd7-c8 3. Dd6-b8+ Kc8-d7 4. Tb6-b7+ Kd7-c6 5. Lb3-d5+ Kc6-c5 6. Lg3-d6+ Kc5-d4 7. Db8-a7+ Kd4-d3 8. Da7-a3+ Kd3-d4 9. Da3-c5+ Kd4-d3 10. Ld5-e4+ Kd3xe4 11. Tb7-b4+ Ke4-f3 12. Dc5-d5+ De8-e4 13. Dd5-d1+ Kf3xe3 14. Dd1-d2+ Ke3-f3 15. Dd2-e2+ De4xe2#
1. Sc8+! Ka8 2. Sb6+ Ka7 3. c8=T! Sb1+ 4. Ka2 Db3+ 5. Txb3 cxb3+ 6. Kxa1 Lxb2+ 7. Kxb1 c2+ 8. Sxc2 bxc2+ 9. Kxb2 c1=D+ 10. Kxc1 d2+ 11. Kc2 d1=D+ 12. Kxd1 e2+ 13. Kd2 e1=D+ 14. Kxe1 f2+ 15. Kf1 Lc4+ 16. Lxc4 Th1+ 17. Kxf2 T1h2+ 18. Ke1 Te3+ 19. Kd1 Te1+ 20. Kxe1 Te2+ 21. Kd1 Td2+ 22. Kc1 Tc2+ 23. Kb1 Tb2+ 24. Ka1 Tb1+ 25. Ka2 Ta1+ 26. Kb2,Kb3 Tb1+ 27. Ka3 Ta1+ 28. La2 Txa2+ 29. Kxa2 Ka6 30. Ta8#
James Malcom: I think that this is the move length record for consecutive checks to the White king, since P1299570 is cooked. P1281852 was the former length that I knew of until I found this posted in the MatPlus Forums by Siegfried Hornecker: http://matplus.net/start.php?px=1621448156&app=forum&act=posts&fid=xshown&tid=302 (2021-05-19)
paul: Checked by Stockfish. (2022-06-27)
comment
paul: Checked by Stockfish. (2022-06-27)
comment
1. Ld6+! Kxd6 2. Sc4+ Kxd5 3. Dd1+ Sbd2 4. Se7+ Lxe7 5. Td6+ Lxd6 6. Sb6+ axb6 7. Td4+ cxd4 8. Db3+ Sxb3,Sc4 9. c4#,Dxc4#
https://zimbeckchess.com/chess_site_014.htm
Henrik Juel: many late duals in other variations, e.g., 3... Ld3 4.Dxd3+ Sd4+ 5.Sxd4 Ta5+ 6.Kxa5,Sxa5
found using Popeye 4.61 with 'opt thr 2' (2021-09-03)
comment
Henrik Juel: many late duals in other variations, e.g., 3... Ld3 4.Dxd3+ Sd4+ 5.Sxd4 Ta5+ 6.Kxa5,Sxa5
found using Popeye 4.61 with 'opt thr 2' (2021-09-03)
comment
Keywords: Checking key, Pawn mate, Opferminimal
Genre: n#
FEN: 8/p1k1Bp2/1RN1pb2/1KpBrp1Q/1R2b2q/NnP1p3/r7/5n2
Input: James Malcom, 2021-05-28
Last update: Alfred Pfeiffer, 2021-09-03 more...
Genre: n#
FEN: 8/p1k1Bp2/1RN1pb2/1KpBrp1Q/1R2b2q/NnP1p3/r7/5n2
Input: James Malcom, 2021-05-28
Last update: Alfred Pfeiffer, 2021-09-03 more...
1. Df5+! Ke3 2. Te4+ Kd3 3. Tb4+ Ke3 4. Df2+ Kd3 5. Df3+ Kc2 6. Sd4+ Kc1 7. De3+ Td2 8. Se2+ Kc2 9. De4+ Td3 10. Dc4+ Tc3 11. Da2+ Kd3 12. Td4+ Ke3 13. De6+ Kf3 14. Dg4+ Ke3 15. Dxg5+ Kf3 16. Tf4+ Ke3 17. Tg4+ Kd3,Kf3 18. Df5+ Ke3 19. Df2+ Kd3 20. Sc1+ Txc1#
Wenn der sTa2 auf c3 stünde, ginge 1.Sc1+ T:c1#. Um den sTa2 nach c3 hin zu bekommen, sind einige "Klimmzüge", natürlich mit Dauerschach, nötig. Schwierig und schön. (KHS) 1.Df5+ Ke3 2.Te4+ Kd3 3.Tb4+ Ke3 4.Df2+ Kd3 erstes Etappenziel: wTb4 statt wTg4, Grundlage dafür, den sTa2 kunstvoll nach c3 bugsieren zu können: 5.Df3+ Kc2 6.Sd4+ Kc1 7.De3+ Td2 8.Se2+ Kc2 9.De4+ Td3 10.Dc4+ Tc3. Und nun gleichermaßen kunstvoll zurück zur Ausgangsstellung: 11.Da2+ Kd3 12.Td4+ Ke3 13.De6+ Kf3 14.Dg4+ Ke3 15.D:g5+ Kf3 16.Tf4+ Ke3 17.Tg4+ K~ 18.Df5+ Ke3 19.Df2+ Kd3, und schließlich 20.Sc1+ T:c1#.
Ein elegantes Kabinettstückchen, mit 10 Steinen federleicht gebaut!
Wenn der sTa2 auf c3 stünde, ginge 1.Sc1+ T:c1#. Um den sTa2 nach c3 hin zu bekommen, sind einige "Klimmzüge", natürlich mit Dauerschach, nötig. Schwierig und schön. (KHS) 1.Df5+ Ke3 2.Te4+ Kd3 3.Tb4+ Ke3 4.Df2+ Kd3 erstes Etappenziel: wTb4 statt wTg4, Grundlage dafür, den sTa2 kunstvoll nach c3 bugsieren zu können: 5.Df3+ Kc2 6.Sd4+ Kc1 7.De3+ Td2 8.Se2+ Kc2 9.De4+ Td3 10.Dc4+ Tc3. Und nun gleichermaßen kunstvoll zurück zur Ausgangsstellung: 11.Da2+ Kd3 12.Td4+ Ke3 13.De6+ Kf3 14.Dg4+ Ke3 15.D:g5+ Kf3 16.Tf4+ Ke3 17.Tg4+ K~ 18.Df5+ Ke3 19.Df2+ Kd3, und schließlich 20.Sc1+ T:c1#.
Ein elegantes Kabinettstückchen, mit 10 Steinen federleicht gebaut!
Keywords: Checking key, Switchback, Perpetual check
Genre: s#
FEN: 7r/8/2p5/6p1/6Rp/3k4/r3NQ2/4K3
Input: Die Schwalbe, 2021-06-08
Last update: Gunter Jordan, 2023-11-01 more...
Genre: s#
FEN: 7r/8/2p5/6p1/6Rp/3k4/r3NQ2/4K3
Input: Die Schwalbe, 2021-06-08
Last update: Gunter Jordan, 2023-11-01 more...
88 - P1390607
Mario Parrinello
18403 Die Schwalbe 306-1 12/2020
(9+13)
h#2
b) Tausch wKg6<->wBd5
c) Tausch wKg6<->wBc4
Mario Parrinello
18403 Die Schwalbe 306-1 12/2020
(9+13)
h#2
b) Tausch wKg6<->wBd5
c) Tausch wKg6<->wBc4
a) 1. Le8+ Kh7 2. Lxh5 Sxh5#
b) 1. Lc6+ Ke6 2. Lxe4 Txe4#
c) 1. Lb5+ Kxb3 2. Lxe2 Sxe2#
b) 1. Lc6+ Ke6 2. Lxe4 Txe4#
c) 1. Lb5+ Kxb3 2. Lxe2 Sxe2#
Keywords: Checking key
Genre: h#
FEN: 6r1/1n4p1/3b2Kp/2pPp1pP/bpP1Pkp1/1p2R1N1/4PP2/8
Input: Die Schwalbe, 2021-06-08
Last update: Alfred Pfeiffer, 2021-10-12 more...
Genre: h#
FEN: 6r1/1n4p1/3b2Kp/2pPp1pP/bpP1Pkp1/1p2R1N1/4PP2/8
Input: Die Schwalbe, 2021-06-08
Last update: Alfred Pfeiffer, 2021-10-12 more...
1. Kd6? Lh2+! 1. Kf7? Txf3+!
1. Sc6+ Kc5 2. Se5+ Kd4 3. f4 Tf3 4. Sc6+ Kc5 5. Sd8+ Kd4 6. Kd6
3. ... Lh2 4. Sc6+ Kc5 5. Sd8+ Kd4 6. Kf6
Cook: Several duals in other variations,
e.g. 3. ... Dd3 4. Td8+,Ke7,Sxd3
(Henrik Juel)
1. Sc6+ Kc5 2. Se5+ Kd4 3. f4 Tf3 4. Sc6+ Kc5 5. Sd8+ Kd4 6. Kd6
3. ... Lh2 4. Sc6+ Kc5 5. Sd8+ Kd4 6. Kf6
Cook: Several duals in other variations,
e.g. 3. ... Dd3 4. Td8+,Ke7,Sxd3
(Henrik Juel)
Keywords: vornehmer Nowotny, Checking key
Genre: n#
FEN: B1RN4/p7/1p2K1p1/Pp6/3kp2p/P1p1pP1r/2P1P3/1r1q2b1
Input: Dieter Berlin, 2021-06-27
Last update: Alfred Pfeiffer, 2021-11-18 more...
Genre: n#
FEN: B1RN4/p7/1p2K1p1/Pp6/3kp2p/P1p1pP1r/2P1P3/1r1q2b1
Input: Dieter Berlin, 2021-06-27
Last update: Alfred Pfeiffer, 2021-11-18 more...
1. Df2-f1+! Kh1-h2 2. Df1-h3+ Kh2-g1 3. Tf3-g3+ Kg1-f2 4. Tg3-g2+ Kf2-f1 5. Tg2-h2+ Kf1-g1 6. Dh3-g3+ Kg1-f1 7. Dg3-f3+ Kf1-g1 8. Th2-g2+ Kg1-h1 9. Tg2-f2+ Kh1-g1 10. Tf2-f1+ Kg1-h2 11. Df3-h1+ Kh2-g3 12. Tf1-g1+ Kg3-f2 13. Dh1-h2+ Kf2xe3 14. Dh2-e5+ Ke3-f2 15. De5-c5+ Lc1-e3#
Judge Michel Caillaud
Judge Michel Caillaud
Henrik Juel: Popeye 4.61 with 'opt thr 1 non 0 1' found no flaws (2021-07-26)
Henrik Juel: thr 0, not 1 (2021-07-26)
comment
Henrik Juel: thr 0, not 1 (2021-07-26)
comment
Keywords: Checking key
Genre: s#
FEN: 8/8/8/8/6PP/4PR2/2P1PQ2/r1bK3k
Input: Marcin Banaszek, 2021-07-26
Last update: Marcin Banaszek, 2022-09-01 more...
Genre: s#
FEN: 8/8/8/8/6PP/4PR2/2P1PQ2/r1bK3k
Input: Marcin Banaszek, 2021-07-26
Last update: Marcin Banaszek, 2022-09-01 more...
1. Lc3-d2+! Kc1-b1 2. 0-0+ Lb3-d1 3. Ta7xa1+ Kb1xa1 4. Tb7-a7+ Ka1-b1 5. Ta7-a1+ Kb1xa1 6. Tc7-a7+ Ka1-b1 7. Ta7-a1+ Kb1xa1 8. Td7-a7+ Ka1-b1 9. Ta7-a1+ Kb1xa1 10. Te7-a7+ Ka1-b1 11. Ta7-a1+ Kb1xa1 12. Tf7-a7+ Ka1-b1 13. Ta7-a1+ Kb1xa1 14. Tg7-a7+ Ka1-b1 15. Ta7-a1+ Kb1xa1 16. Th7-a7+ Ka1-b1 17. Le8-g6+ Th6xg6#
Judge Michel Caillaud
Judge Michel Caillaud
Keywords: Non-standard material, Checking key
Genre: s#
FEN: 4B2r/RRRRRRRR/3b3r/3p4/1R1N4/1bB1p3/1p6/n1k1K2R
Input: Marcin Banaszek, 2021-07-26
Last update: Marcin Banaszek, 2022-08-08 more...
Genre: s#
FEN: 4B2r/RRRRRRRR/3b3r/3p4/1R1N4/1bB1p3/1p6/n1k1K2R
Input: Marcin Banaszek, 2021-07-26
Last update: Marcin Banaszek, 2022-08-08 more...
1. Dd5+? Dxd5#?
1. ... Lxd5!
1. Df2+! Ke4 2. De3+ Kf5 3. Dg5+ Ke4 4. Dg6+ Kd4 5. Dg1+ Ke4 6. Db1+ Kd4 7. Dxb4+ Lc4 8. Dc3+ Ke4 9. Dxc4+ Kf5 10. De6+ Ke4 11. Dg6+ Kd4 12. Dg1+ Ke4 13. Db1+ Kd4 14. Db2+ Ke4 15. Dc2+ Kd4 16. Dc3+ Ke4 17. Df3+ Kd4 18. Dd5+ Dxd5#
1. ... Lxd5!
1. Df2+! Ke4 2. De3+ Kf5 3. Dg5+ Ke4 4. Dg6+ Kd4 5. Dg1+ Ke4 6. Db1+ Kd4 7. Dxb4+ Lc4 8. Dc3+ Ke4 9. Dxc4+ Kf5 10. De6+ Ke4 11. Dg6+ Kd4 12. Dg1+ Ke4 13. Db1+ Kd4 14. Db2+ Ke4 15. Dc2+ Kd4 16. Dc3+ Ke4 17. Df3+ Kd4 18. Dd5+ Dxd5#
Keywords: Preplan, Round Trip (D), Staircase (D), Switchback (Dk), Perpetual check, Logical Problem, Checking key
Genre: s#
FEN: q5b1/7r/3K4/2P1N3/1p1k4/5Q1p/3B4/8
Input: Rainer Staudte, 2021-07-27
Last update: Gunter Jordan, 2021-09-13 more...
Genre: s#
FEN: q5b1/7r/3K4/2P1N3/1p1k4/5Q1p/3B4/8
Input: Rainer Staudte, 2021-07-27
Last update: Gunter Jordan, 2021-09-13 more...
1. Td5+!
1. ... Kxd5 2. Tc7#
1. ... Kc4 2. Tf4#
1. ... Kc6 2. Tf6#
1. ... Kxd5 2. Tc7#
1. ... Kc4 2. Tf4#
1. ... Kc6 2. Tf6#
Keywords: Checking key
Genre: 2#
FEN: n5B1/1p3RP1/1p1R2p1/1rk5/1r6/Q1P2P1p/6pB/6K1
Reprints: 27 Amitie et nature 05/1964
Input: Mario Richter, 2021-07-28
Last update: Felber, Volker, 2023-10-02 more...
Genre: 2#
FEN: n5B1/1p3RP1/1p1R2p1/1rk5/1r6/Q1P2P1p/6pB/6K1
Reprints: 27 Amitie et nature 05/1964
Input: Mario Richter, 2021-07-28
Last update: Felber, Volker, 2023-10-02 more...
94 - P1393385
Sergey Smotrov
9310 Seven Chess Notes 184 05/2021
2. Preis
PR Anatoli Stepotschkin
(4+3)
s#18
Sergey Smotrov
9310 Seven Chess Notes 184 05/2021
2. Preis
PR Anatoli Stepotschkin
(4+3)
s#18
1. Te8+? Kh7 2. Df7?
1. Df7+! Kh8 2. Df8+ Kh7 3. Sf5+ Kg6 4. Df6+ Kh5 5. Dh4+ Kg6 6. Te6+ Kf7 7. Df6+ Kg8 8. Te8+ Kh7 9. De7+ Kg6 10. Tg8+ Kh5 11. Sg3+! Kh6 12. Df6+ Kh7 13. Tg7+ Kh8 14. Te7+ Kg8 15. Te8+ Kh7 16. Df7+ Kh6 17. Te6+ Kg5 18. Df4+ Dxf4#
1. ... Kh7 2. Sf5+ Kh8 3. Df6+ Kg8 4. Te8+ usw.
1. Df7+! Kh8 2. Df8+ Kh7 3. Sf5+ Kg6 4. Df6+ Kh5 5. Dh4+ Kg6 6. Te6+ Kf7 7. Df6+ Kg8 8. Te8+ Kh7 9. De7+ Kg6 10. Tg8+ Kh5 11. Sg3+! Kh6 12. Df6+ Kh7 13. Tg7+ Kh8 14. Te7+ Kg8 15. Te8+ Kh7 16. Df7+ Kh6 17. Te6+ Kg5 18. Df4+ Dxf4#
1. ... Kh7 2. Sf5+ Kh8 3. Df6+ Kg8 4. Te8+ usw.
Henrik Juel: Popeye 4.61 with 'opt non 1 1 thr 0' found no flaws
1... Kh7? permits s#14 (2021-09-01)
comment
1... Kh7? permits s#14 (2021-09-01)
comment
Keywords: Aristocrat, Miniature, Preplan, Checking key, Perpetual check, Switchback (DTk), Round Trip (k)
Genre: s#
FEN: 6k1/4R1N1/1n3Q2/4K3/8/8/8/2q5
Input: Rainer Staudte, 2021-09-01
Last update: Gunter Jordan, 2022-03-09 more...
Genre: s#
FEN: 6k1/4R1N1/1n3Q2/4K3/8/8/8/2q5
Input: Rainer Staudte, 2021-09-01
Last update: Gunter Jordan, 2022-03-09 more...
1. Dd8+ Kh5 2. De8+ Kg5 3. De5+ Kg6 4. Dg7+ Kh5 5. h7 Dh2+ 6. Ke3 Dh3+ 7. Kd4 Dh4+ 8. Kd5 Dd8+ 9. Ke5 Dc8+ 10. Kd4 Dd8+ 11. Kc3 Dc8+ 12. Kd2 Dd8+ 13. Ke2 De8+ 14. Kf2
96 - P1396555
Sergey Smotrov
The Ural's Problemist Website 11/2021
3. Preis
Aleksandr Azhusin 70 JT
Section logical s#
WCCI=7.5
(5+11)
s#18
Sergey Smotrov
The Ural's Problemist Website 11/2021
3. Preis
Aleksandr Azhusin 70 JT
Section logical s#
WCCI=7.5
(5+11)
s#18
1. Df7-f4+? Sg3-e4 2. Sc7-b5+ Kd4-c4 3. Sb5-d6+ Kc4-d4 4. Lf8-f2+??
1. Tg5-d5+? Kd4-c4 2. Td5-a5+ Kc4-d4 3. Lf8-c5+ Kd4-e5 4. Lc5-e7+ Ta4xa5!
1. Tg5-d5+! Kd4-c4 2. Td5-b5+! Kc4-d4 3. Lf8-c5+ Kd4-e5 4. Lc5-e7+ Ke5-d4 5. Tb5-d5+ Kd4-c4 6. Td5-a5+ Kc4-d4 7. Sc7-b5+ Kd4-e5 8. Le7-f6+ Ke5-f5 9. Lf6-h4+! Kf5-e5 10. Df7-f6+ Ke5-d5 11. Sb5-c7+ Kd5-c4 12. Df6-f7+ Kc4-d4 13. Ta5-d5+ Kd4-c4 14. Td5-g5+ Kc4-d4 15. Df7-f4+ Sg3-e4 16. Sc7-b5+ Kd4-c4 17. Sb5-d6+ Kc4-d4 18. Lh4-f2+ Tg2xf2#
1. Returns of white figures
2. Logic maneuver Bf8 => h4
1. Tg5-d5+? Kd4-c4 2. Td5-a5+ Kc4-d4 3. Lf8-c5+ Kd4-e5 4. Lc5-e7+ Ta4xa5!
1. Tg5-d5+! Kd4-c4 2. Td5-b5+! Kc4-d4 3. Lf8-c5+ Kd4-e5 4. Lc5-e7+ Ke5-d4 5. Tb5-d5+ Kd4-c4 6. Td5-a5+ Kc4-d4 7. Sc7-b5+ Kd4-e5 8. Le7-f6+ Ke5-f5 9. Lf6-h4+! Kf5-e5 10. Df7-f6+ Ke5-d5 11. Sb5-c7+ Kd5-c4 12. Df6-f7+ Kc4-d4 13. Ta5-d5+ Kd4-c4 14. Td5-g5+ Kc4-d4 15. Df7-f4+ Sg3-e4 16. Sc7-b5+ Kd4-c4 17. Sb5-d6+ Kc4-d4 18. Lh4-f2+ Tg2xf2#
1. Returns of white figures
2. Logic maneuver Bf8 => h4
Keywords: Checking key, Perpetual check
Genre: s#
FEN: 1n3B2/2N2Q2/7b/6Rp/rp1k4/1ppp1Kn1/6r1/8
Input: Marcin Banaszek, 2021-12-03
Last update: Marcin Banaszek, 2022-09-02 more...
Genre: s#
FEN: 1n3B2/2N2Q2/7b/6Rp/rp1k4/1ppp1Kn1/6r1/8
Input: Marcin Banaszek, 2021-12-03
Last update: Marcin Banaszek, 2022-09-02 more...
97 - P1396641
Bosko Miloseski
C322 SuperProblem (Website) 04/10/2021
2. Lob
Abt. #7 - #n
PR Waleri Kirillow
(4+8)
#10
Bosko Miloseski
C322 SuperProblem (Website) 04/10/2021
2. Lob
Abt. #7 - #n
PR Waleri Kirillow
(4+8)
#10
1. Th1+ Kg7 2. Lc1! Kf6 3. Te1 Kf5 4. Te6 Kg4 5. Tf6 Kg3 6. Le2! Kg2 7. Tg6+ Kh1 8. Lf3+ Kh2 9. Lf4+ Kh3 10. Th6#
Anton Baumann: DL: 7. ... Kh2 8.Lf3,Lf4 Kh3 9.Lf4,Lf3 nebst 10.Th6#
sowie 6. ... Kh3 7.Tg6 Kh4 8.Lf3,Lf4 Kh3 9.Lf4,Lf3 10.Th6# (2022-05-25)
comment
sowie 6. ... Kh3 7.Tg6 Kh4 8.Lf3,Lf4 Kh3 9.Lf4,Lf3 10.Th6# (2022-05-25)
comment
Keywords: corner to corner (k), Checking key, Schlüssel = Eckzug
Genre: n#
FEN: 7k/8/8/8/1pB5/bp6/prpB4/KbR5
Input: Gunter Jordan, 2021-12-05
Last update: Gunter Jordan, 2021-12-05 more...
Genre: n#
FEN: 7k/8/8/8/1pB5/bp6/prpB4/KbR5
Input: Gunter Jordan, 2021-12-05
Last update: Gunter Jordan, 2021-12-05 more...
98 - P1397421
Harald Grubert
10832 Ideal-Mate Review 78 04-06/2000
Lob
PR Eugene Albert
(3+3)
h#4
b) wKf6->a4
Harald Grubert
10832 Ideal-Mate Review 78 04-06/2000
Lob
PR Eugene Albert
(3+3)
h#4
b) wKf6->a4
a) 1. Sa3 Ke5 2. Kb5 Kd4 3. Ka4 Kc3 4. b5 b3#
b) 1. Sc3 Kb3 2. Sa4 b5 3. Ka5 Kc4 4. b6 b4#
b) 1. Sc3 Kb3 2. Sa4 b5 3. Ka5 Kc4 4. b6 b4#
Keywords: Pawn step variations, Chameleon Echo, Ideal mate, Selfblock, Twin, Checking key (in b), Miniature, Pawn mate, Remote selfblock, Switchback (s in b), Rücknahme Schlüsselzug (in b)
Genre: h#
FEN: 8/1p6/1k3K2/1n6/1P6/8/1P6/8
Reprints: 96 Hilfsmattvierer , p. 34, 2000
Input: Gunter Jordan, 2021-12-22
Last update: Gunter Jordan, 2023-10-31 more...
Genre: h#
FEN: 8/1p6/1k3K2/1n6/1P6/8/1P6/8
Reprints: 96 Hilfsmattvierer , p. 34, 2000
Input: Gunter Jordan, 2021-12-22
Last update: Gunter Jordan, 2023-10-31 more...
99 - P1397964
Hans Peter Rehm
Schweizerische Schachzeitung 1979-1980
5. Preis
Informalturnier 1979/80
Mehrzüger
(8+10)
#5
Hans Peter Rehm
Schweizerische Schachzeitung 1979-1980
5. Preis
Informalturnier 1979/80
Mehrzüger
(8+10)
#5
1. Ld2? h5! 1. Lg5? h5!
1. Sd2+ Kc1 2. Sb1+ Kxb1 3. Lg5 h6 4. Te5 3. ... h5 4. Tf4
2. ... Kd1 3. Te5 Ke2 4. Ld2+ 3. ... h5 4. Ld4
1. Sd2+ Kc1 2. Sb1+ Kxb1 3. Lg5 h6 4. Te5 3. ... h5 4. Tf4
2. ... Kd1 3. Te5 Ke2 4. Ld2+ 3. ... h5 4. Ld4
Keywords: Indian, Kraftopfer, Checking key
FEN: 8/7p/8/2RP1R2/6pP/pN2B1pb/rpP3p1/bk4K1
Reprints: Die Schwalbe 78, p. 614, 12/1982
Input: Dieter Berlin, 2022-01-06
Last update: Dieter Berlin, 2022-01-06 more...
FEN: 8/7p/8/2RP1R2/6pP/pN2B1pb/rpP3p1/bk4K1
Reprints: Die Schwalbe 78, p. 614, 12/1982
Input: Dieter Berlin, 2022-01-06
Last update: Dieter Berlin, 2022-01-06 more...
1. Lg2+! Kb5 2. Tb7+ Kc5 3. Lf2+ gxf2 4. Tc7+ Kb5 5. Lc6+ Kc5 6. Le4+ Kb5 7. Sd4+ exd4 8. Lc6+ Kc5 9. Lb7+ Kb5 10. Lc8 a5 11. Ld7+ Ka6 12. Ka4 Th8 13. Lb5#
12. ... Th5 13. Lc8#
12. ... Th5 13. Lc8#
Henrik Juel: Popeye 4.61 with 'opt thr 1' found no flaws (2022-01-09)
SCHRECKE: C+, Gustav 4.2a, Brute Force
Murarasu: P1050198 (2022-01-09)
comment
SCHRECKE: C+, Gustav 4.2a, Brute Force
Murarasu: P1050198 (2022-01-09)
comment
Keywords: Discovered check, Checking key
Genre: n#
FEN: 8/2R1b3/p1B2p2/2k1p3/1pN2r2/1Kpp2p1/2N4r/4B3
Input: Felber, Volker, 2022-01-09
Last update: Gunter Jordan, 2022-01-09 more...
Genre: n#
FEN: 8/2R1b3/p1B2p2/2k1p3/1pN2r2/1Kpp2p1/2N4r/4B3
Input: Felber, Volker, 2022-01-09
Last update: Gunter Jordan, 2022-01-09 more...
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Brian Stephenson (8)
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Gunter Jordan (6)
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A.Buchanan (1)
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Die Schwalbe (2)
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comment