Die Schwalbe

248 problem(s) found in 4153 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20220810 AND NOT S='Arbeiter-Zeitung (Wien)' AND K='Rückkehr'] [download as LaTeX]

1 - P0001638
Michel Caillaud
507 Europe Echecs 364 04/1989
2. ehrende Erwähnung
P0001638
(13+13) C+
BP in 24,5
1. f3 c6 2. Kf2 Db6+ 3. Kg3 Dxg1 4. h4 Dxf1 5. h5 Dxh1 6. h6 Dh5 7. hxg7 Sh6 8. g8=S Lg7 9. a4 Lc3 10. a5 f6 11. a6 Kf7 12. axb7 Kg6 13. Txa7 Sf7 14. Ta1 Ta4 15. Sh6 Sa6 16. b8=T Tf8 17. Tb4 Sh8 18. Th4 Tf7 19. Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
play all play one stop play next play all
Schlag von wSg1 und wTh1 auf ihren Ursprungsfeldern. Anschließend werden die beiden Orginalsteine durch UW-Steine ersetzt.
paul: The last moves are: 14.Ta1 Ta4 15.Sh6 Sa6 16.b8=T Tf8 17.Tb4 Sh8 18.Th4 Tf7 19.Th1 Th4 20. Sg4 Sb4 21. Sf2 La6 22. Sh3 Ld3 23. Sg1 Kg5 24. Kf2 Lg6 25. Ke1
Phoenix-Pronkin theme: wNg1 & wRh1 are promoted, here combined with wK-switchback. (2008-03-24)
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Keywords: Unique Proof Game, Pronkin Theme (TS), Switchback (KT)
Genre: Retro
Computer test: Euclide 0.96 Ergänzung: Stelvio 1.2. Keine Lösung: BP 23.5, BP 24.0.
FEN: 7n/3ppr1p/2p2pb1/6kq/1n5r/2b2P2/1PPPP1P1/RNBQK1NR
Reprints: 43 Shortest Proof Games 11/1991
H16 FIDE Album 1989-1991 1997
feenschach 141 06/2001
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-05-21 more...
2 - P0009046
Peter Wong
9923 Die Schwalbe 169 02/1998
4. Preis
P0009046
(15+14) C+
BP in 23.0
1. e4 a5 2. Ke2 a4 3. Kf3 a3 4. Kg4 axb2 5. a4 Ta6 6. a5 Ta7 7. a6 Ta8 8. a7 Sc6 9. Ta6 Sb8 10. Th6 g6 11. axb8=S Lg7 12. Sa6 Lc3 13. dxc3 Kf8 14. Dd4 De8 15. Da4 Kg7 16. Lc4 Df8 17. Se2 Dd8 18. Td1 Kf8 19. Td6 Ke8 20. Tf6 e6 21. Sd2 Se7 22. Sf3 Sc6 23. Sfg1 Sb8
play all play one stop play next play all
Je 3zügiger Tempoverlust von sTa8 und sDd8, dazu Platzwechsel (wSb1 nach g1, sSg8 nach b8) und Switchback (sSb8 und sKe8). Hervorragend!
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 in 1 Sekunde.
Keine Lösung: BP 22.0, BP 22.5. (2023-03-27)
comment
Keywords: Unique Proof Game, Non-standard material, Switchback (sk), Tempo Loss (t3s2d3), Impostor (Ss)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rnbqk2r/1ppp1p1p/N3pRpR/8/Q1B1P1K1/2P5/1pP1NPPP/2B3N1
Reprints: feenschach 141 06/2001
(70) Parallel Strategy 2004
H52 FIDE Album 1998-2000 2007
Input: Gerd Wilts, 1998-06-26
Last update: Silvio Baier, 2023-04-05 more...
3 - P0009132
Michel Caillaud
R042 Probleemblad 01/1999
P0009132
(13+15) C+
BP in 24,0
1. g4 c5 2. Lg2 Da5 3. Lc6 Dxa2 4. Lb5 Dd5 5. Ta6 Sh6 6. Tc6 dxc6 7. b3 Lf5 8. Lb2 Sd7 9. Lf6 exf6 10. g5 Ld6 11. g6 Ke7 12. gxh7 Thb8 13. h8=T a5 14. Tc8 a4 15. Tc7 Th8 16. f3 Ke8 17. Kf2 Lf8 18. Kg3 a3 19. Kh4 Ta4+ 20. Kh5 Tg4 21. d4 Sb8 22. Dd3 Dd8 23. Sd2 Lc8 24. Dh7 Sg8
play all play one stop play next play all
Switchback von 7 schwarzen Figuren, davon nur einer mit Schlag!
Henrik Juel: Natch 3.1 made no progress after half an hour (2018-12-13)
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Keywords: Unique Proof Game, Pure Round Trip (d), Switchback (sldklst), Promotion (T)
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:03:45 Minuten. (hh:mm:ss) Keine Lösung: BP 23.0, BP 23.5.
FEN: 1nbqkbnr/1pR2ppQ/2p2p2/1Bp4K/3P2r1/pP3P2/2PNP2P/6NR
Input: Gerd Wilts, 1999-02-27
Last update: A.Buchanan, 2023-04-01 more...
4 - P0501209
Hilmar Ebert
Hans Gruber
Denis Blondel

12173v British Chess Magazine 1985
1. ehrende Erwähnung
P0501209
(2+13) C+
h#4
1. Tc4 Txa2 2. Tb4 Txb2 3. Ta2 Txb1 4. Ta1 Txa1#
play all play one stop play next play all
Yuri Bilokin: you can see
1...Rxb1 2.a1=Q Rxa1 3.b1=Q+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=R Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=B+ Rxb1 4.Ra1 Rxa1#
1...Rxb1 2.a1=Q Rxa1 3.b1=S Rxb1 4.Ra1 Rxa1# (2023-05-08)
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Keywords: Pure Round Trip (T), Tempo Move (ttt), Switchback (t), Minimal (T)
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: b7/1n6/8/pp2p3/kr1pK3/rp6/pp6/Rn6
Reprints: 12173v British Chess Magazine 01/1986
Input: Gerd Wilts, 1996-06-06
Last update: A.Buchanan, 2017-03-20 more...
5 - P0569680
Marko Klasinc
(5) Problem 04/1973
P0569680
(12+9) C+
h#18
1. Txa2 Sxa2 2. Kb6 Sc1 3. Kc7 Sa2 4. Kd8 Sc1 5. Ke8 Sa2 6. Kf8 Sc1 7. Kg8 Sa2 8. Kh7 Sc1 9. Kg6 Sa2 10. Kxf6 Sc1 11. Ke7 Sa2 12. f5 Sc1 13. f4 Sa2 14. f3 exf3 15. e2 Kd2 16. Kd8 Sc3 17. Kc7 Sa4 18. Kc6 Tc3#
play all play one stop play next play all
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Keywords: Capture key, Switchback (Sk), Entblockung, Round Trip (k-8), Square vacation
Genre: h#
Computer test: C+, popeye 4.87
FEN: 8/1b1p1p2/k2p1P2/1p1p4/1P1P4/BRKPp3/NPP1P3/r1N5
Input: hpr, 1999-03-30
Last update: Gunter Jordan, 2022-12-01 more...
6 - P1000488
Thierry Le Gleuher
P0030 StrateGems 04-06/1999
Sam Loyd gewidmet
3. Preis
P1000488
(14+14) C+
BP in 25,5
1. d4 g5 2. Lf4 g4 3. Kd2 g3 4. hxg3 Sc6 5. Th6 Se5 6. Tb6 Sf3+ 7. exf3 axb6 8. Lc4 Ta3 9. Df1 Tc3 10. Sa3 h5 11. Te1 h4 12. Te6 h3 13. Tc6 dxc6 14. Ke2 Lf5 15. Le6 Da8 16. Lc8 e6 17. d5 Se7 18. d6 Sg6 19. d7+ Ke7 20. d8=T Th4 21. Td1 Sh8 22. Ta1 Kd8 23. Sb1 La3 24. Lc1 Tb4 25. Ld7 Le4 26. Dd1
play all play one stop play next play all
Hervorragend: Pronkin-Thema mit dem völlig eingeschlossenen wTa1, Switchback von Sb1, Lc1 und Dd1. Ein Rätsel im Geiste von Sam Loyd.
Henrik Juel: Natch 3.1 did nothing for an hour (2018-12-13)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 © Reto Aschwanden
33 Minuten, 1 Lösung, Notation OK.
Stelvio Histogramme/Strategien 40, vor der Lösung wegen der Lösezeit
mit Stelvio berechnet. (2023-02-08)
comment
Keywords: Unique Proof Game, Pronkin Theme (T), Switchback (SLD)
Genre: Retro
Computer test: Stelvio 1.0
FEN: q2k3n/1ppB1p2/1pp1p3/8/1r2b3/b1r2PPp/PPP1KPP1/RNBQ2N1
Reprints: feenschach 153 10-12/2003
A) Quartz 23 01-03/2004
H57 FIDE Album 1998-2000 2007
Input: Gerd Wilts, 2000-08-01
Last update: Silvio Baier, 2023-03-02 more...
7 - P1000642
Satoshi Hashimoto
R048 Probleemblad 03/1999
3. Preis
P1000642
(14+15) C+
BP in 23,0
1. e4 Sf6 2. Df3 Sh5 3. Df6 exf6 4. e5 Ld6 5. e6 0-0 6. e7 Sc6 7. e8=D Tb8 8. De4 Te8 9. Ld3 Te5 10. Se2 Tb5 11. 0-0 Tb3 12. axb3 Kf8 13. Ta6 bxa6 14. Da4 Tb5 15. Le4 Te5 16. d3 Te8 17. Lf4 Ke7 18. Sd2 Th8 19. Ta1 Ke8 20. Kf1 Lf8 21. Ke1 Se7 22. Sf1 c6 23. Lb8 Sg8
play all play one stop play next play all
Weiß und Schwarz haben klein rochiert, wTa1 stammt von h1, sTh8 stammt von a8.
Henrik Juel: Natch 3.1 did nothing in almost an hour (2018-12-13)
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Keywords: Unique Proof Game, Impostor (Tts), Switchback (Kkl), Castling, Promotion
Genre: Retro
Computer test: Moldenhauer: Computerprüfung: C+ Stelvio 1.11 84:43:01 Stunden. (hh:mm:ss) Keine Lösung: BP 22.0, BP 22.5. Oder auch Stelvio 2.1 in 25min.
FEN: 1Bbqkbnr/p2p1ppp/p1p2p2/7n/Q3B3/1P1P4/1PP1NPPP/R3KN2
Reprints: feenschach 153, p. 195, 10-12/2003
82 Die Schwalbe 250A, p. 260, 08/2011
7 64 Proof Games 2012
Input: Gerd Wilts, 2000-08-01
Last update: Reto, 2024-03-10 more...
8 - P1001055
Satoshi Hashimoto
11046 Die Schwalbe 187 02/2001
P1001055
(14+15) C+
BP in 17,5
1. Sc3 b5 2. Sa4 b4 3. c3 b3 4. Dc2 bxc2 5. Tb1 cxb1=D 6. Sf3 De4 7. d3 e6 8. Le3 Df6 9. Sd2 Dff3 10. exf3 Lc5 11. Le2 d6 12. 0-0 Kd7 13. Ta1 Kc6 14. Sb1 Kb5 15. Lc1 Le3 16. Kf1 c5 17. Ke1 Sc6 18. Lf1
play all play one stop play next play all
Henrik Juel: Natch 3.3 just needed less than a second to test this proof game (2023-06-12)
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Keywords: Unique Proof Game, Ceriani-Frolkin Theme (d), Interchange (T), Castling, Switchback (LL)
Genre: Retro
Computer test: Resolution time : 58.79 s., Natch 2.3 Copyright (C) 1997,98,99,2001,2002,2003,2004 Pascal Wassong
FEN: r1b3nr/p4ppp/2npp3/1kp5/N3q3/2PPbP2/PP3PPP/RNB1KB2
Input: Gerd Wilts, 2001-02-11
Last update: Gerd Wilts, 2005-12-30 more...
9 - P1004047
Mark Kirtley
Gianni Donati

R150 Probleemblad 5 09-10/2001
1. Lob
P1004047
(11+15) C+
BP in 25,0
1. h4 f5 2. Th3 f4 3. Tb3 f3 4. Tb6 axb6 5. h5 Ta3 6. h6 Td3 7. a4 gxh6 8. a5 bxa5 9. Ta4 b6 10. Td4 Lb7 11. Td6 exd6 12. e3 Se7 13. De2 Sc8 14. Kd1 Le7 15. De1 0-0 16. Le2 Kh8 17. Df1 fxe2+ 18. Ke1 Tf3 19. Sa3 Th3 20. g3 Lh1 21. Dg2 Dg8 22. Dc6 Db3 23. cxb3 Ld8 24. Dc2 c6 25. Dd1 Lc7
play all play one stop play next play all
7zügiges Tempoverlustmanöver der wD, die kompliziert auf dem Königsflügel freigeschleust werden muss.
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Keywords: Unique Proof Game, Tempo Loss, Pure Round Trip (D), Switchback (K), Castling
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nn4k/2bp3p/1ppp3p/p7/8/NP1rP1Pr/1P1PpP2/2BQK1Nb
Reprints: Best Problems 47 07/2008
Input: Gerd Wilts, 2002-04-05
Last update: A.Buchanan, 2023-05-14 more...
10 - P1004461
Ivan Denkovski
Gligor Denkovski

972 Orbit 17 01/2003
1. Lob
P1004461
(12+12)
BP in 16,5
1. e3 a5 2. Ld3 Sa6 3. Lg6 hxg6 4. h4 Th5 5. Sh3 Tb5 6. h5 Txb2 7. h6 Txa2 8. hxg7 Ta4 9. La3 Th4 10. Lxe7 Th8 11. Lg5 Df6 12. gxf8=T+ Ke7 13. Txc8 Txc8 14. 0-0 Tf8 15. Kh2 Ke8 16. Kg3 Dd8 17. Sg1
play all play one stop play next play all
Henrik Juel: Natch 3.1 did little in an hour (2018-12-17)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 5 Std. 32 Min. nur eine Lösung!
Keine Lösung bei BP 15.5 in 21 Min. und BP 16.0 in 45 Min.
Notation OK. (2022-12-21)
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Keywords: Ceriani-Frolkin Theme (T), Unique Proof Game, Pure Round Trip (t), Switchback (dkS)
Genre: Retro
FEN: 3qkrnr/1ppp1p2/n5p1/p5B1/8/4P1K1/2PP1PP1/RN1Q1RN1
Input: Gerd Wilts, 2003-02-01
Last update: Olaf Jenkner, 2016-09-03 more...
11 - P1011855
Satoshi Hashimoto
R120 Problemesis 36 12/2003
P1011855
(16+16) C+
BP in 17,0
1. a4 h5 2. Ta3 Th6 3. Tg3 Tf6 4. Tg6 e6 5. Th6 Le7 6. Th8 Th6 7. b3 Lh4 8. Lb2 Dg5 9. Ld4 Ke7 10. Sc3 Sf6 11. Td8 d6 12. Td7+ Ke8 13. Sd5 Sg8 14. c3 Dd8 15. Dc2 Le7 16. h4 Lf8 17. Se7 Th8
play all play one stop play next play all
Henrik Juel: Natch 3.1 found nothing in some 2 hours (2018-12-18)
ras@bsiag.com: Checked this quickly, because its fun to watch: C+ by Stelvio 1.0 in 3min. (2023-02-10)
comment
Keywords: Unique Proof Game, Switchback (dklst), Capture-free
Genre: Retro
Computer test: Stelvio 1.0
FEN: rnbqkbnr/pppRNpp1/3pp3/7p/P2B3P/1PP5/2QPPPP1/4KBNR
Reprints: 47 64 Proof Games 2012
Input: Gerd Wilts, 2003-12-12
Last update: Silvio Baier, 2023-03-02 more...
12 - P1013069
Satoshi Hashimoto
R47 Problemesis 2001
2. ehrende Erwähnung
P1013069
(16+16) C+
BP in 20,0
1. a4 f5 2. a5 f4 3. Ta4 f3 4. Tf4 e6 5. d4 Ld6 6. Tf8+ Ke7 7. Lg5+ Sf6 8. Kd2 Sc6 9. Ke3 Se5 10. Kf4 c5 11. e3 Dc7 12. La6 b5 13. Se2 Lb7 14. Tb8 Tc8 15. Sc1 Dd8 16. De2 Tc7 17. Td1 Lc8 18. Lb7 Ke8 19. a6 Sg8 20. Lf6 Lf8
play all play one stop play next play all
Switchback von Lc8, Dd8, Ke8, Lf8, Sg8.
Richter Thierry Le Gleuher: "Un bon problème où les 5 switchbacks noirs ont le mérite d'être réalisés sans aucune capture."
Henrik Juel: Natch 3.1 found nothing in more than half an hour (2018-12-15)
Moldenhauer: Keine Lösung: BP 19.0, BP 19.5. (2023-05-01)
comment
Keywords: Unique Proof Game, Switchback (ldkls), Capture-free
Genre: Retro
Computer test: Stelvio 1.17, 2sec
FEN: rRbqkbn1/pBrp2pp/P3pB2/1pp1n3/3P1K2/4Pp2/1PP1QPPP/1NNR4
Input: Gerd Wilts, 2004-02-01
Last update: Reto, 2023-04-17 more...
13 - P1013083
Roberto Osorio
Jorge Joaquin Lois
Oscar Cuasnicú

R230 Probleemblad 02/2004
3. Lob
P1013083
(15+15) C+
BP in 21,5
1. g3 Sa6 2. Lg2 Tb8 3. Lc6 bxc6 4. Sf3 Tb3 5. 0-0 Ta3 6. bxa3 e6 7. Lb2 Le7 8. Ld4 Lh4 9. Sc3 Dg5 10. Tb1 Se7 11. Tb8 0-0 12. Db1 Lb7 13. Te8 Sg6 14. Te7 Ta8 15. Te8+ Sf8 16. Td8 Lc8 17. Db7 Db5 18. Ta1 Db1+ 19. Se1 Dd1 20. Sb1 Sb8 21. Lb2 a6 22. Lc1
play all play one stop play next play all
Aufwändige Manöver zum Einschleusen des wTa1 nach d8 und der sD nach d1. wTa1/sTa8 sind wTh1/sTh8.
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:10:35 Minuten. (hh:mm:ss)
Keine Lösung: BP 20.5, BP 21.0. (2023-03-16)
comment
Keywords: Unique Proof Game, Promenade, Interchange, Castling (2), Switchback (LSls), Impostor (Tt)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rnbR1nk1/1Qpp1ppp/p1p1p3/8/7b/P5P1/P1PPPP1P/RNBqN1K1
Reprints: (81) Die Schwalbe 250A 08/2011
Input: Gerd Wilts, 2004-02-20
Last update: Silvio Baier, 2023-03-20 more...
14 - P1013131
Eric Pichouron
R138 Problemesis 38 04/2004
P1013131
(16+13) C+
BP in 22,0
1. c4 a5 2. c5 a4 3. c6 a3 4. cxb7 Sc6 5. bxa8=T La6 6. Da4 Db8 7. Dh4 Kd8 8. g4 Kc8 9. Lg2 Kb7 10. Le4 Da7 11. Txf8 Sf6 12. Ta8 Tb8 13. Lc2 Kc8 14. d3 Kd8 15. Lh6 Tc8 16. Tb8 Ke8 17. Tb6 Ta8 18. Sd2 Db8 19. Tc1 Dd8 20. Lb1 Sb8 21. Tcc6 Sg8 22. Tf6 Lc8
play all play one stop play next play all
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Keywords: Unique Proof Game, Interchange, Switchback (kdlss), Impostor (t)
Genre: Retro
Computer test: Computerprüfung: C+ Stevio 1.11 48:53:36 Stunden. (hh:mm:ss) Keine Lösung: BP21.0, BP 21.5.
FEN: rnbqk1n1/2pppppp/1R3R1B/8/6PQ/p2P4/PP1NPP1P/1B2K1NR
Input: Gerd Wilts, 2004-04-01
Last update: A.Buchanan, 2023-03-13 more...
15 - P1020014
Frederick E. Gamage
The Chess Review 04/1939
Ehrende Erwähnung
P1020014
(8+8) C+
#2
1. Sf4! droht 2. Sce6#
1. ... Dxc8 2. Sfe6#
1. ... Dg2+ 2. Sxg2#
1. ... Dh3+ 2. Sxh3#
1. ... Dxf4 2. Txf4#
1. ... Kd4 2. De4#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (4854), Flight giving sacrifice key, Switchback, Provoked check, discovered checkmate
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 2R5/1Q6/3PN3/2N1P2p/p1k3qR/2p2p2/8/b4Kn1
Reprints: 111 Selected Problems by Famous Composers 1945
131 The American Two-move Chess Problem , p. 65, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-04 more...
16 - P1020525
William A. Shinkman

P1020525
(8+6) C+
#2
1. Tf1! droht 2. De3#
1. ... exf1=S 2. Db2#
1. ... Sg3 2. Df4#
1. ... e1=D 2. Txe1#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (5370), Sacrifice key, under-promotion (sS), Rook sacrifice, Switchback (wT)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/2K1p3/2P1B2p/2N1k2n/7P/3p3N/4pQ2/4R3
Reprints: ? 1885
Tijdschrift van den NSB 1907
White to Play 1913
Simple Two-move Themes 1924
The Golden Argosy 1929
58 Das Schachproblem , p. 54, 1937
39 Spectacular Chess Problems , p. 23, 1965
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-12-04 more...
17 - P1022575
Philip Hamilton Williams
The English Mechanic and World of Science 1893
P1022575
(8+10) C+
#2*
* 1. ... a5 2. Sb5# 1. ... c1=D 2. Txc1# 1. ... Lxe4 2. Tf7# 1. ... d5 2. Dc5#

1. La4? a5!
1. Dg1! b6 2. Dg7# 1. ... b5 2. Da7#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (7431), Switchback (wD), Block, Mutate
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: R3B3/Qpk4p/p2pp2K/4p2p/4P2P/N4b2/2p5/5R2
Reprints: White to Play 1913
7 Versunkene Schätze , p. 15, 1998
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-06-02 more...
18 - P1024155
Josef Cumpe
Svetozor 1929
P1024155
(5+4) C+
#2*
* 1. ... g4 2. Dxh4#

1. Da1! droht 2. Lg7#
1. ... Sxg6 2. Dh1#
1. ... g4 2. Lf4#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (9022), Switchback, Bishop sacrifice, pin-mate, Line opening, corner to corner
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/1K6/4R1Bk/4Bpp1/7n/8/8/7Q
Reprints: Themes-64 1956
4 Schach ohne Partner für Könner , p. 13, 1982
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-02-21 more...
19 - P1027784
Veljko Vorgic
Becejske novine 1962
P1027784
(9+7)
#2
1. Sxe5! droht 2. Shf3#
1. ... Lxe5 2. Dxe7#
1. ... Da3+ 2. Sd3#
1. ... Dxe5+ 2. Txe5#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-03-08)
comment
Keywords: Brian Stephenson Collection (12668), Capture key, Provoked check, Cross check, Gegenschach, Switchback, selfpinning
Genre: 2#
FEN: 3Q4/4q1p1/5b1p/3Rp1kP/2RB2Pp/3NK3/7N/8
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2023-03-08 more...
20 - P1030951
Josef Juchli
Neue Zürcher Zeitung 03/02/1895
P1030951
(9+6)
#3
1. Th8! droht 2. Tb8
1. ... Sxe5 2. Th5 Lxf3,Le4,Sxf3 3. Se6# 2. ... La2,Sg4 3. Se4#
1. ... Sh2 2. Txh2 Lxf3,Le4 3. Se6#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (15853), pin-mate, Switchback, half-battery, black (maskiert)
Genre: 3#
FEN: 8/3R4/B1p5/B1kbP1NR/6n1/3p1N2/2pP4/2K5
Reprints: 23 J. Juchli's Schachprobleme 1908
932 Schweizerische Schachzeitung , p. 50, 04/1908
97 Schach-Express , p. 133, 01/08/1947
553 Beispiele zur Ideengeschichte des Schachproblems , p. 120, 1982
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-04-19 more...
21 - P1031220
A. C. J. van van Eelde
G. C. A. Oskam

452 Schweizerische Schachzeitung , p. 35, 03/1905
3. ehrende Erwähnung (aufgerückt)
1. Problemturnier 1905
Schweizerischer Schachbund
P1031220
(10+5)
#3
1. Sg6! droht 2. Se7+ Ke6 3. Lg4#
1. ... Lxh3 2. Sf8 Lc8,Ld7 3. Dh1#
1. ... Ke6 2. Sf4+ gxf4 3. Lc4#
1. ... Lf5 2. Db7+
1. ... Ke4 2. Se7+ Kf4 3. Sd5# 2. ... Lf5 3. Dxf5#
1. ... Kc6 2. Se5+ Kd5 3. Lc4#
play all play one stop play next play all
ohne wBh3 ginge sofort Dh1#. Also wird Schwarz zur Beseitigung dieses wB gezwungen.
Henrik Juel: dual 1... Lf5 2.Db7,Df7+ (2022-10-04)
comment
Keywords: Brian Stephenson Collection (16122), Switchback (wS), Flight-giving key
Genre: 3#
FEN: K1b2N2/7Q/5P2/p1Pk2p1/3B4/7P/2N1BP2/2b5
Reprints: Politiek en Cultuur 10/1938
158 Versunkene Schätze , p. 71, 1998
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-10-04 more...
22 - P1032142
?
Tijdschrift van den NSB 12/1927
P1032142
(10+10) C+
#3
1. Kd7! e5+ 2. Kd8
1. ... e6+ 2. Kc8
play all play one stop play next play all
Als Autor wird genannt: H. van Engelen
more ...
comment
Keywords: Brian Stephenson Collection (17048), Switchback, Provoked check
Genre: 3#
Computer test: SCHRECKE: popeye 4.89
FEN: 3K2b1/1Np1p1rR/2R2pr1/1P1k4/4p1Pp/N1P1P1b1/7B/8
Reprints: 50 Valves and Bi-Valves , p. 62, 1930
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-18 more...
23 - P1036395
Hugo Knuppert
Skakbladet 1957
1. Preis
P1036395
(11+8) C+
#2*
* 1. ... Txe5 2. Dxd3# 1. ... Dxe5 2. Sb6# 1. ... Sxe5 2. Lxe4#

1. Sxe4! droht 2. Sg5#
1. ... Txe5 2. Df7# 1. ... Dxe5 2. Sc7# 1. ... Sxe5 2. Dc4#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (21334), Switchback (Drohung), Dual avoidance, Schiffmann defence, pin-mate (dreifach), Changed mates
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: Nq6/3pr3/2p3p1/2BkP1NR/1P2p3/1P1n4/6B1/1K2RQ2
Reprints: Die Schwalbe 1957
1464 Beispiele zur Ideengeschichte des Schachproblems , p. 294, 1982
Die Schwalbe 2003
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-03-12 more...
24 - P1037594
Johannes Kohtz
Carl Kockelkorn

Deutsches Wochenschach 1907
P1037594
(9+7) C+
#4
1. Kf3! droht 2. Sg4# 1. ... droht 2. Sd3#
1. ... Lxe4+ 2. Kg3 Ld3,Lh1,Lf3 3. e4 droht 4. Dd6# 3. ... Lxe4 4. Sg4#
play all play one stop play next play all
(215) Handschriftliche Lebenserinnerungen (Sächsische Landes- und Universitätsbibliothek (SLUB)) von Johannes Kohtz
more ...
comment
Keywords: Brian Stephenson Collection (22542), Switchback, Blocknutzung, Provoked check
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 7b/3Q3b/2p5/2P1k1P1/r3N3/2p1P1K1/2p2N1P/6B1
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-15 more...
25 - P1038308
Dawid Przepiorka
Akademische Monatshefte für Schach 1911
P1038308
(10+8) C+
#5
1. Tgxg2? droht 2. Txd3 1. ... Lxe3!

1. Ta2! Lxe4 2. Td2 Ld3 3. Tgxg2 Lxe3 4. Tge2
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (23259), Switchback, Zugzwang-Goal (nach dem 4. Zug), Line opening
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 7k/6pP/1K4B1/2p2PRp/2p1P2P/2PbP3/3R2p1/6b1
Reprints: 273 Versunkene Schätze , p. 119, 1998
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-09-01 more...
26 - P1038454
Hans Peter Rehm
2117 Deutsche Schachzeitung , p. 112, 03/1966
1. Preis
P1038454
(11+5) C+
#5
1. f4? gxf4!

1. Lh1! gxh4 2. f3! Kd5 3. f4+ Kd4 4. Sf8 Kc5 5. Sxe6#
1. ... g4 2. Lb7! g3 3. f4 g2 4. Sf8 g1=D 5. Sxe6#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (23405), Indian, Staggered preplans, Switchback (wL)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2e
FEN: K7/1B1N4/4p3/P3P1pP/3k3P/N2p3p/3B1P1P/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-01-05 more...
27 - P1039860
B. J. M. Markx
Tijdschrift van den NSB 1898
2. Preis
Jubiläum-Wettstreit
P1039860
(9+9) C+
#2
1. Lb5! Sa5,Sb4 2. d8=S#
1. ... Sd8 2. cxd8=S#
1. ... Kxe6 2. Lc4#
play all play one stop play next play all
more ...
comment
Keywords: Brian Stephenson Collection (24816), Flight giving sacrifice key (S), Switchback, under-promotion in mating move (zweifach, S), Drag-in sacrifice, ambush key (L-B)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 2K3b1/p1PPpk1n/P1n1N1pP/4p1p1/2B1N1P1/8/8/8
Reprints: 573 Beispiele zur Ideengeschichte des Schachproblems , p. 124, 1982
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-05-05 more...
28 - P1052316
Philipp von Klett
4002 Deutsche Schachzeitung , p. 8, 01/1876
P1052316
(10+9)
#4
1. Lh2! droht 2. Sf6#
1. ... c4 2. Ld6 Lxf3 3. Sf5 Lxe4 4. Sc7# 3. ... Kxe4 4. Sf6#
2. ... Ld3 3. Sf5 2. ... Se7 3. Sf7
1. ... Lc4+ 2. Ka1 Lxb5 3. Sf6+ Kc6 4. Te6#
2. ... Se5 3. Txe5+ Kd4 4. Sf5# 2. ... Sf4 3. Sf6+ Kd6 4. Lxf4#
play all play one stop play next play all
Felber, Volker: Autor in der DSZ mit 'P. K. in L.' angegeben. (2014-03-12)
Henrik Juel: late duals like 1... Lc4+ 2.Ka1 Sf4 3.Sf6+,Sf5 (2023-12-03)
comment
Keywords: Brian Stephenson Collection (37358), Switchback (wL), Blocknutzung, Drag-in sacrifice, Provoked check
Genre: n#
FEN: 4N3/1p6/3B2nN/pPpk4/4R1Pp/P1p2P2/K1P1b3/3n4
Reprints: 71 Schachprobleme [Klett] 1878
24 Classic Chess Problems by Pioneer Composers , p. 17, 1970
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-12-03 more...
29 - P1054520
Friedrich Chlubna
3509 Schach-Echo 6 23/03/1964
3. Preis
Zander-TT, 1993-1994
PR Wilhelm Hagemann + Heinz Zander
P1054520
(9+7)
#3
1. Tf3-f5! droht 2. Se4#
1. ... dxc3 2. Tf3 droht 3. Txc3#
2. ... Kxd5 3. Tf3-f5#
play all play one stop play next play all
Meeraner, Urform, Themafigur: wT
SCHRECKE: C+, popeye 4.87 (2022-12-13)
comment
Keywords: Brian Stephenson Collection (39568), discovered checkmate, Batteriematt diagonal, Meerane-Thema, Zander-Thema, Rücknahme Schlüsselzug, Switchback
Genre: 3#
FEN: 4n3/1p3K2/3p1p2/P1kP2p1/P2p4/1PN2R2/2N5/7B
Reprints: Ausgewählte Schachaufgaben [Zander] 2000
3 Die Schwalbe 297, p. 129, 06/2019
Input: Brian Stephenson, 2004-08-12
Last update: Rainer Staudte, 2022-12-13 more...
30 - P1058492
Johannes Kohtz
Carl Kockelkorn

Sonntagsblatt für Jedermann (Berlin) 11/06/1884
P1058492
(9+5) C+
#3
1. Kf5! Sxe3+ 2. Kg5 Sd1 3. Sc7#
1. ... Sxf2 2. Lf3 Sd1 3. Lxe4#
1. ... Sb2 2. Lf3
1. ... Sc3 2. Txc3 e3 3. Lf3#
play all play one stop play next play all
Im ND der DSZ mit wLg2 statt f2. Korrigiert 12/1885, Seite 367.
more ...
comment
Keywords: Brian Stephenson Collection (43554), Provoked check, Sacrifice of white pieces (T, L), Switchback
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/7p/2p1N2P/2Pk2K1/4pPB1/1P2R3/5B2/3n4
Reprints: 5687 Deutsche Schachzeitung , p. 350, 11/1884
8 Brüderschaft 7, p. 29, 03/08/1885
The White King 1914
17 Arbeiter-Schachzeitung (Chemnitz) 5, p. 145, 05/1925
61 Classic Chess Problems by Pioneer Composers , p. 35, 1970
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2023-10-18 more...
31 - P1059935
Roland Baier
Basler Nachrichten 1973
P1059935
(9+4)
#3
1. Db8! Kf2 2. Dg3+ Kf1 3. Le2#
1. ... Ke4 2. Sf5 d4 3. Sf6#
1. ... Kxd4 2. De8 Kc4 3. Da4# 2. ... Ke5,Ke3 3. Lc5#
play all play one stop play next play all
SCHRECKE: 1. ... Kxd4 2. De8 Ke4 3. Lc5,Lf6# (Mattdual) (2022-09-10)
comment
Keywords: Brian Stephenson Collection (45005), Switchback (wD), Knight sacrifice
Genre: 3#
FEN: 4Q3/4BK2/8/3p2pN/3N2P1/4k3/1PPp4/3B4
Reprints: 62 Kunstschach in der Schweiz , p. 41, 1980
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2022-09-10 more...
32 - P1066732
Eric Pichouron
PCCC Meeting 09/2004
3. ehrende Erwähnung Champagne TT 2004
P1066732
(12+14) C+
BP in 24,5
1. e4 h5 2. Dg4 hxg4 3. Sc3 Th3 4. Sd5 Tc3 5. bxc3 Sc6 6. La3 Sd4 7. Ld6 cxd6 8. h4 Da5 9. h5 b6 10. h6 Lb7 11. h7 0-0-0 12. Th6 La8 13. Tf6 gxf6 14. Lc4 Lh6 15. d3 Lc1 16. Se2 La3 17. Kd2 Lb4 18. Th1 Da3 19. Th5 a5 20. Te5 fxe5 21. h8=D Sf6 22. Dh1 Th8 23. Dd1 Th3 24. Ke1 Tf3 25. gxf3
play all play one stop play next play all
Richter MC: "A well oiled game using the 'standard Rook' to double the theme, displaying an additional Pronkin and switchback by Ke1."
Henrik Juel: Natch 3.1 did little in half an hour (2018-12-19)
Moldenhauer: Computerprüfung: C+ Stelvio 1.2 02:04:15 Stunden. (hh:mm:ss)
Keine Lösung: BP 23.5, BP 24.0. (2023-05-11)
comment
Keywords: Unique Proof Game, Pronkin Theme (D), Switchback, Impostor (Tt)
Genre: Retro
Computer test: Stelvio 1.2
FEN: b1k5/3ppp2/1p1p1n2/p2Np3/1bBnP1p1/q1PP1P2/P1P1NP2/3QK3
Reprints: H58 Phénix 02-03/2005
Input: Gerd Wilts, 2004-09-14
Last update: Silvio Baier, 2023-08-15 more...
33 - P1067230
Rustam Ubaidullajew
1233 Orbit 21 01/2004
1. Preis
P1067230
(14+15) C+
BP in 25,5
1. g3 g5 2. Lh3 Lg7 3. Lxd7+ Kxd7 4. Kf1 Ke6 5. Kg2 Kf5 6. Kf3 Le6 7. Ke3 Kg4 8. Sf3 Kh3 9. Sg1 Kg2 10. Df1+ Kxf1 11. Kf3 Ke1 12. Kg2 Kd1 13. Kf1 Ld4 14. Sf3 Lb6 15. Se1 c5 16. Kg2 Sc6 17. Kf3 Dd5+ 18. Ke3 Td8 19. Tg1 Dh1 20. Tg2 Lc8 21. Sf3 De1 22. Tg1 Td7 23. Th1 Sd8 24. Sg1 c4+ 25. Kf3 g4+ 26. Kg2
play all play one stop play next play all
Henrik Juel: Natch 3.1 did nothing in 3 hours (2018-12-20)
Henrik Juel: So difficult, and yet so simple
Count the black moves... (2018-12-20)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 06:31:34 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-15)
comment
Keywords: Unique Proof Game, Promenade (K), Switchback (S)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 2bn2nr/pp1rpp1p/1b6/8/2p3p1/6P1/PPPPPPKP/RNBkq1NR
Reprints: feenschach 155, p. 292, Herb/2004
Input: Gerd Wilts, 2004-11-28
Last update: Silvio Baier, 2023-03-02 more...
34 - P1068530
Satoshi Hashimoto
Probleemblad 06/2005
P1068530
(16+16) C+
BP in 24,0
1. g4 d5 2. Lg2 d4 3. Lc6+ Sd7 4. Lb5 c6 5. f3 Da5 6. Kf2 Sb6 7. Kg3 Kd7 8. Kh4 g5+ 9. Kh5 Lg7 10. Sa3 Le5 11. Sc4 Sf6+ 12. Kh6 Ke6 13. Kg7 Sg8+ 14. Kf8 Lg7+ 15. Ke8 Lf8 16. Kd8 Ld7+ 17. Kc7 Td8 18. a3 Lc8 19. Kb8 Kd7 20. Se5+ Ke8 21. c4 Td6 22. Da4 Sd7+ 23. Ka8 Dd8 24. Da5 Sb8
play all play one stop play next play all
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-22)
Moldenhauer: Computerprüfung: C+ Stelvio 1.11 00:05:37 Minuten. (hh:mm:ss)
Keine Lösung: BP 23.0, BP 23.5. (2023-04-02)
comment
Keywords: Unique Proof Game, Switchback (sldkls), Capture-free, Königswanderung
Genre: Retro
Computer test: Stelvio 1.11
FEN: Knbqkbnr/pp2pp1p/2pr4/QB2N1p1/2Pp2P1/P4P2/1P1PP2P/R1B3NR
Reprints: (H) Quartz 29 01-06/2006
53 64 Proof Games 2012
Input: Gerd Wilts, 2006-08-11
Last update: Silvio Baier, 2023-04-05 more...
35 - P1070008
Roberto Osorio
Jorge Joaquin Lois

13821 Die Schwalbe 232 08/2008
P1070008
(13+15) C+
BP in 20.5
1. h4 c5 2. Th3 Db6 3. Tb3 Dxb3 4. a3 Da2 5. Sc3 Db1 6. Sh3 Dxc1 7. Dxc1 d6 8. Db1 Sd7 9. Da2 Sdf6 10. 0-0-0 Kd7 11. Da1 Ke6 12. Kb1 Kf5 13. Ka2 Kg4 14. Kb3 Lf5 15. Da2 Tc8 16. Ta1 Tc6 17. Db1 Tb6+ 18. Ka2 Tb3 19. Dd1 b6 20. Sb1 Txh3 21. g3
play all play one stop play next play all
zweifacher Platzwechsel von Dd1 und Ta1, Rückkehr Sb1
Henrik Juel: The double interchange (Lois theme) is a challenge for solvers
Natch 3.1 did little in an hour
Stopped at pos. 5 (2018-12-26)
Moldenhauer: Computerprüfung: C+ Stelvio 1.2 127:03:03 Stunden. (hhh:mm:ss)
Keine Lösung: BP 19.5, BP 20.0 22:17:49 Stunden. (2023-05-18)
more ...
comment
Keywords: Unique Proof Game, Interchange (DT x2), Switchback (S), Lois Theme (DT), Castling
Genre: Retro
Computer test: Stelvio 1.2
FEN: 5bnr/p3pppp/1p1p1n2/2p2b2/6kP/P5Pr/KPPPPP2/RN1Q1B2
Input: Gerd Wilts, 2008-09-05
Last update: Silvio Baier, 2023-08-15 more...
36 - P1080581
Roberto Osorio
Jorge Joaquin Lois

StrateGems 01-03/2006
P1080581
(15+12) C+
BP in 25,5
1. h4 f5 2. h5 Kf7 3. h6 Kg6 4. Sh3 Kh5 5. Sc3 g6 6. Sd5 Lg7 7. Sb4 Lf6 8. Sg1+ Lh4 9. Sf3 Sf6 10. e3 Dg8 11. Ke2 Db3 12. axb3 Tg8 13. Ta6 Tg7 14. Te6 dxe6 15. Sg1 Ld7 16. Kf3 Lb5 17. Le2 Sc6 18. Df1 Td8 19. Ld1 Td3 20. Se2 Sd4+ 21. Kf4 c6 22. exd4 Tg3 23. hxg7 Ld3 24. cxd3 h6 25. Lc2 Sh7 26. Sg1
play all play one stop play next play all
Silvio Baier: 1.h4 f5 2.h5 Kf7 3.h6 Kg6 4.Sh3 Kh5 5.Sc3 g6 6.Sd5 Bg7 7.Sb4 Lf6 8.Sg1+ Lh4 9.Sf3 Sf6 10.e3 Dg8 11.Ke2 Db3 12.ab Tg8 13.Ta6 Tg7 14.Te6 de 15.Sg1 Ld7 16.Kf3 Lb5 17.Le2 Sc6 18.Df1 Td8 19.Ld1 Td3 20.Se2 Sd4+ 21.Kf4 c6 22.ed Tg3 23.hg Ld3 24.cd h6 25.Lc2 Sh7 26.Sg1
Dreifache Rückkehr des Sg1 (2010-02-16)
Henrik Juel: Natch 3.1 did little in more than an hour
Stopped at pos. 1 (2018-12-25)
Vladimir Rey: Update: 2. Preis (source: feenschach 171 2008) (2022-07-28)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 16:43 Minuten.
Keine Lösung: BP 24.5, 25.0. (2023-02-14)
comment
Keywords: Unique Proof Game, Switchback (S)
Genre: Retro
Computer test: Stelvio 1.0
FEN: 8/pp2p1Pn/2p1p1pp/5p1k/1N1P1K1b/1P1P2r1/1PBP1PP1/2B2QNR
Reprints: StrateGems 10-12/2007
Input: Gerd Wilts, 2009-01-11
Last update: Silvio Baier, 2023-03-02 more...
37 - P1090925
Jacques Rotenberg
128 Phénix 10/1988
1. ehrende Erwähnung
P1090925
(6+2) C+
s#8*
* 1. ... Lb7 2. Dc6 Lxc6#
1. Sb8! Lb7 2. Sd7 Lc6 3. Sf8 Lb7 4. Dc6 Kb8 5. Se6 Ka8 6. Sc7+ Kb8 7. Sa6+ Ka8 8. Ta1 Lxc6#
play all play one stop play next play all
Frank Müller: läßt sich mit wDf3 und sLe4 um zwei Züge erweitern
Hier liegt Keine Vorgängerschaft vor, denn es wird ein interessanter 6-zügiger Rundlauf des wS gezeigt!
paul: Anticipated by P1186964 (Schildberg) (2022-09-14)
Jacques Rotenberg: not at all anticipated !!
the solution is completely different (2022-12-04)
Jacques Rotenberg: the P1186964 itself is anticipated! (2022-12-04)
Jacques Rotenberg: about P1186964 see P1186601 (2022-12-04)
Iwan Soroka: @paul. P1186964 is kein Vorgänger zu P1090925. Was genau ist anticipated? (2022-12-04)
more ...
comment
Keywords: Minimal (l), Corner mate, Model mate, Switchback (Skl), Tempo Loss, Round Trip (S-6)
Genre: s#
Computer test: I. Soroka: Gustav 3.2 d
FEN: k7/8/N1b5/3Q4/8/8/7P/1R4BK
Input: Frank Müller, 2009-09-09
Last update: Gunter Jordan, 2022-12-05 more...
38 - P1106666
Mario Parrinello
Kostas Prentos

P0265 StrateGems 50 04-06/2010
3. Lob
P1106666
(13+14) C+
BP in 21,5
1. f3 Sc6 2. Kf2 Sd4 3. Kg3 Sxe2+ 4. Kg4 Sg3 5. hxg3 Tb8 6. Th6 Ta8 7. Tb6 axb6 8. De2 Ta5 9. Da6 Ta3 10. bxa3 h6 11. Lb2 Th7 12. Lf6 Th8 13. Sc3 Th7 14. Te1 Th8 15. Te6 dxe6 16. Sge2 Dd3 17. Sd4 Dh7 18. Se4 Kd7 19. Lb5+ Kd8 20. Le8 Ld7 21. c3 Lc8 22. Sc6+
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, Switchback (ttl), Tempo Loss
Genre: Retro
Computer test: C+ by Natch 3.1 (17 s) No solution in 20.5 Computerprüfung: C+ Stelvio 1.6 in 4 Min. Notation ist mit Henriks Änderung richtig!
FEN: 2bkBbnr/1pp1pppq/QpN1pB1p/8/4N1K1/P1P2PP1/P2P2P1/8
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2024-02-12 more...
39 - P1106668
Gianni Donati
Olli Heimo
Joose Norri

P0267 StrateGems 50 04-06/2010
3. Preis
P1106668
(13+13) C+
BP in 23,0
1. a4 a5 2. Ta3 Ta6 3. Tf3 Tg6 4. Tf6 gxf6 5. b4 Lh6 6. b5 Le3 7. f4 La7 8. b6 Sa6 9. bxa7 b6 10. Kf2 Lb7 11. Ke3 Lf3 12. gxf3 Da8 13. Lh3 De4+ 14. fxe4 Sh6 15. Sf3 Tgg8 16. Dg1 Tf8 17. Dg4 Sg8 18. De6 fxe6 19. Tg1 Kf7 20. Tg5 Ta8 21. Td5 exd5 22. Le6+ Ke8 23. f5 Sb8
play all play one stop play next play all
Henrik Juel: Natch 3.1 did not find the solution in half an hour
Stopped at pos. 12 (2018-12-29)
more ...
comment
Keywords: Unique Proof Game, Pure Round Trip (t), Switchback (kss)
Genre: Retro
Computer test: Stelvio 1.11
FEN: rn2k1nr/P1ppp2p/1p2Bp2/p2p1P2/P3P3/4KN2/2PPP2P/1NB5
Input: Gerd Wilts, 2010-06-03
Last update: A.Buchanan, 2023-07-26 more...
40 - P1116170
Heinz Brixi
272 Deutsche Schachblätter 3, p. 47, 03/1951
P1116170
(4+3) C+
#3
1. Ld3! Kb4 2. Txh5 Ka4 3. Th4#
1. ... h4 2. La6 h3 3. Tc4#
play all play one stop play next play all
B25TT mm
more ...
comment
Keywords: Miniature Collection (0330048), Miniature, Switchback (k)
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/8/p1R2B1p/k7/8/K2P4/8
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-10-11 more...
41 - P1118606
Otto Dehler
III Die Schwalbe 89, p. 283, 05/1935
P1118606
(3+2)
#5
1. S5b6+! (Se7?) Ka7 2. Sc8+ Ka8 3. Kb5 b6 4. Ka6 b5 5. Scb6#
play all play one stop play next play all
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
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...
42 - P1123583
Nikolay S. Zinovyev
10694 Ideal-Mate Review 78 04/2000
P1123583
(5+2)
#4
1. a8=L Ka6 2. Ka3 Kb5 3. Lb7 Kc4 4. Sd6#
play all play one stop play next play all
SX3L IM BUL4
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-12-06)
comment
Keywords: Miniature Collection (0328371), under-promotion key, under-promotion (L), Miniature, Minimal (b), Schlüssel = Eckzug, Ideal mate, Switchback (k)
Genre: n#
FEN: 2N5/P7/1B6/1k6/8/1K1p4/3P4/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-12-06 more...
43 - P1134326
Otto B. Wurzburg
Pittsburgh Gazette Times 26/02/1915
P1134326
(3+4) C+
#3
1. Lg5! 0-0 2. Lh6 Ta8 3. Dg7#
play all play one stop play next play all
E2-d3 m
more ...
comment
Keywords: Miniature Collection (0330474), Miniature, Switchback, Flight-giving key
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 4k2r/5p2/2p2Q1B/2K5/8/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Dieter Berlin, 2023-12-07 more...
44 - P1134592
Claus Grupen
3374 Kieler Nachrichten 25/01/1997
P1134592
(5+1)
#5
1. La5 Kd4 2. Lc7 Kc4 3. Ld8 Kd4 4. Lf6+ Kc4 5. d3#
play all play one stop play next play all
BsL0 IM D20
Henrik Juel: C+ Popeye 4.61 (2023-05-27)
comment
Keywords: Miniature Collection (0073492), anticipated (P1152960), Rex solus (s), Miniature, Flight-giving key, Switchback (k), Pawn mate, Ideal mate
Genre: n#
FEN: 8/8/2K5/2N5/2k5/P1B5/3P4/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-05-27 more...
45 - P1134614
Walter Wohlers
188 Landeszeitung für die Lüneburger Heide 13/02/1971
P1134614
(5+2)
#4
1. Lf5 Se4 2. Lh3 Sd2 3. Lc8 ... 4. La6#
play all play one stop play next play all
F4LS
Henrik Juel: late duals, e.g., 1... Se4 2.Lh3 Sd2 3.Lg2,Lc8 (2023-02-04)
comment
Keywords: Miniature Collection (0073502), Minimal (s), Miniature, Switchback (L)
Genre: n#
FEN: 2B5/8/2K5/2nN4/2k5/4P3/2P5/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-02-04 more...
46 - P1134717
Alexander N. Melnichuk
15116 Ideal-Mate Review 101 01/2006
P1134717
(5+2)
#7
1. f4 Ke4 2. Lb1+ Kd4 3. Kb6 Kc4 4. La2+ Kd4 5. Kb5 Ke4 6. Lb1+ Kd4 7. e3#
play all play one stop play next play all
BsL2 IM
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-10)
comment
Keywords: Miniature Collection (0329273), Minimal (b), Miniature, Pawn mate, Ideal mate, Switchback (Lk), Klasinc theme (L-k)
Genre: n#
FEN: 8/8/2K5/3p4/3k4/5P2/B2BP3/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-04-10 more...
47 - P1135869
Bernhard Rittmeier
32 Four men only 1982
P1135869
(3+1) C+
#11
1. Sh6 Kf8 2. Lf6 Ke8 3. Kd6 Kf8 4. Ke6 Ke8 5. Sf5 Kf8 6. Le7+ Kg8 7. Kf6 Kh7 8. Kf7 Kh8 9. Kg6 Kg8 10. Sh6+ Kh8 11. Lf6#
play all play one stop play next play all
LsS RU-LS RU Sf5 Lf6
more ...
comment
Keywords: Miniature Collection (0073851), Rex solus (s), Flight taking, Switchback (LSk)
Genre: n#
Computer test: C+ Gustav 4.2a C+ Gustav 4.2a
FEN: 3Bk1N1/2K5/8/8/8/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2022-12-01 more...
48 - P1144089
Claus Grupen
Problem Observer 03/1975
P1144089
(5+2)
#3
1. Kd8! Kb7 2. Td7+ Kxc6 3. Tc7#
2. ... Ka8 3. Txa7#
play all play one stop play next play all
A2-T2T+ m
SCHRECKE: C+, popeye 4.87 (2022-11-13)
comment
Keywords: Miniature Collection (0340522), Minimal (b), Miniature, Corner mate, Model mate (Gnaden-), Square vacation, Switchback (k)
Genre: 3#
FEN: 8/p2K4/k1N5/2P5/2PR4/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-11-13 more...
49 - P1144942
Frank Uhlig
801 Neue Osnabrücker Zeitung 20/08/1994
P1144942
(3+3) C+
#5
1. Tf3! f5 2. Te3 f4 3. Tf3 Kc6 4. Tb3 Kd6 5. Tb6# 3. ... Ke6 4. Txf4 Kd6 5. Tf6#
play all play one stop play next play all
TX1 mm
more ...
comment
Keywords: Miniature Collection (0076671), Miniature, Switchback (doppelt), Echo
Genre: n#
Computer test: SCHRECKE: Gustav 4.2c
FEN: 3K4/5p2/3k4/3p4/3B4/4R3/8/8
Reprints: 182 Problemschach-Jahrbuch 1994 D, p. 82, 1994
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-06-08 more...
50 - P1145118
Otto Fuss
Schachminiaturen 1903
P1145118
(5+2)
#3
1. Dd5! Kxa6 2. Da8+ Kb6 3. Sd7#
1. ... Ka5 2. Kc7
1. ... b4 2. Dc6+
play all play one stop play next play all
MM-DS-DS
SCHRECKE: Nebenlösung
1. Sd7+ Ka5 2. Dd5 Ka4,Kxa6 3. Da2,Da8# (2023-09-20)
comment
Keywords: Miniature Collection (0292171), Minimal, Miniature, Switchback
Genre: 3#
FEN: Q2K4/8/Pk6/1p2N3/8/2P5/8/8
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-09-19 more...
51 - P1147496
Josef Belschan
3536 Wiener Schach-Zeitung 20, p. 319, 10/1937
Internationales Dreizügerturnier des "Interessanten Blattes"
1. ehr. Erw.
P1147496
(3+4) C+
#3
1. Ta3 droht 2. Th3+ Kg4 3. Df3#
1. ... g4 2. Ta4 g3 3. Th4# 2. ... d4 3. Txa5#
1. ... Kg4 2. Df3+ Kh4 3. Dh3#
1. ... Kh4 2. De6 Kh5 3. Th3# 2. ... g4 3. Dh6#
play all play one stop play next play all
B11-3DT Bg4 MW
more ...
comment
Keywords: Miniature Collection (0052275), Miniature, Flight-giving key, Switchback, Blocknutzung
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/8/5Q2/p2p2pk/R7/8/8/4K3
Reprints: 46 Das interessante Blatt , p. 14, 18/11/1937
1407 Hamburger Nachrichten 21/03/1938
3 Problem-Palette , p. 5, 1970
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2022-08-10 more...
52 - P1151198
Wolfgang Alexander Bruder
2805 Rhein-Neckar-Zeitung 24/12/2005
P1151198
(5+1) C+
#4
1. Ta1! Kb4 2. Kd4 Kb3 3. Sc4 Kb4 4. Tb1#
3. ... Kc2 4. La4#
1. ... Kb6 2. Kd6 Kb7 3. Lc6+ Kb8,Kc8 4. Ta8#
3. ... Kb6 4. Sc4#
play all play one stop play next play all
PB-d4
more ...
comment
Keywords: Miniature Collection (0330429), Aristocrat, Miniature, Rex solus (s), Symbol problem (Weihnachtsbaum), Schlüssel = Eckzug, Switchback (k)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/3B4/8/2k1K3/8/8/1N3N2/3R4
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2022-11-19 more...
53 - P1156211
Viktor S. Kolpakov
1093 Temp-64 20/07/1995
P1156211
(3+3)
#4*
* 1. ... Kh1 2. Lf1 Kh2 3. Sxf3+ Kh1 4. Lg2#
1. Lg4 Kh1 2. Lxf3+ Kh2 3. Lg2 f3 4. Sxf3#
play all play one stop play next play all
SfL
SCHRECKE: C+, Gustav 4.2e, Brute Force (2024-01-16)
comment
Keywords: Miniature Collection (0345781), Miniature, Schlüssel = Eckzug (im *), Switchback (k), Exchange of roles (L-S)
Genre: n#
FEN: 8/8/8/8/5p2/5p1B/5K1k/6N1
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2024-01-16 more...
54 - P1156283
Friedhelm Schwieger
Stern 02/04/1992
P1156283
(5+2) C+
#3
1. Tc4! Ka3 2. Lc2 a1=D 3. Ta4#
1. ... a1=D 2. Lc2+ Ka3 3. Ta4#
1. ... a1=S 2. Ta4 Sc2 3. Lc4#
play all play one stop play next play all
B7-3b3
more ...
comment
Keywords: Miniature Collection (0055446), Minimal, Miniature, Flight-giving key, Switchback (wT), Promotion (sD), under-promotion (sS), Blocknutzung
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/8/8/R2B4/1k1B4/pN3K2/8
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2022-11-05 more...
55 - P1161649
Wolfgang Alexander Bruder
2395 Rhein-Neckar-Zeitung 14/02/1998
K. Roscher gewidmet
P1161649
(5+2) C+
#6
1. La6! f1=D 2. Lxf1 Kd4 3. Tb3 Kd5 4. Lb5 Kd6 5. Tc3 Kd5 6. Td3#
1. ... Kd4 2. Tb3 Kd5 3. Td3+ Kc6 4. Ke6 Kc7 5. Tc3+ Kd8 6. Tc8# 4. ... f1=D 5. Tc3+ Dc4+ 6. Txc4#
play all play one stop play next play all
T16T m
more ...
comment
Keywords: Miniature Collection (0082034), Minimal (b), Miniature, Switchback
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 8/3N1K2/1R6/3k4/8/5P2/5p2/5B2
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-06-25 more...
56 - P1162176
Wilhelm Massmann
187 Deutsche Schachblätter 21 01/11/1938
nach Theodor Siers
P1162176
(5+2) C+
#3
1. Lh4! Lh6 2. Lg5 Lxg5 3. Sg7#
play all play one stop play next play all
more ...
comment
Keywords: Miniature Collection (0057192), Minimal (b), Miniature, Mousetrap, Switchback
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 8/5K2/4NP2/5kB1/3Q4/8/8/2b5
Reprints: 208 Perlen der Schachkomposition 1985
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-11-19 more...
57 - P1170345
Albert Fischli
Basler Nachrichten 1968
P1170345
(6+1)
#4
1. Db6! Kxd5 2. Da7 Ke4 3. Dd7 Kf4 4. Dg4#
1. ... Kf4 2. Db1 Kg5 3. Dg6+ 2. ... Kg3 3. Df5
1. ... Kf5 2. Dg6+ Kf4 3. Dg4#
play all play one stop play next play all
D13B
SCHRECKE: 1. ... Kf4 2. Db1 Kg3 3. Df5,Dg1+ (Dual) (2022-09-19)
comment
Keywords: Miniature Collection (0331300), Miniature, Rex solus, Switchback (wD)
Genre: n#
FEN: 8/Q7/8/3PN3/3Pk3/8/3P4/7K
Reprints: 150 Kunstschach in der Schweiz , p. 85, 1980
Input: Zuncke/Bruder, 2010-09-12
Last update: Dieter Berlin, 2022-09-19 more...
58 - P1174201
Nikolay S. Zinovyev
11111 Ideal-Mate Review 79 07/2000
P1174201
(4+1)
#6
1. Sfe4 Kg8 2. Sd6 Kf8 3. Sgf5 Kg8 4. Le5 Kf8 5. Lg7+ Kg8 6. Se7#
play all play one stop play next play all
IM SsL
SCHRECKE: C+, Gustav 4.2e, Brute Force (2024-03-06)
comment
Keywords: Miniature Collection (0328440), Rex solus (s), Switchback (k), Ideal mate
Genre: n#
FEN: 7k/8/7K/8/8/6N1/5N1B/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2024-03-06 more...
59 - P1185013
Camillo Gamnitzer
2197 Probleemblad 09-10/1992
P1185013
(11+11)
s#7
1. Txd4??
1. Td7 droht 2. Db5+ cxb5 3. Txc7+ Lxc7#
1. ... Lf2 2. Txd4 droht 3. Ta4+ Lxe3 4. Db6+ cxb6#
2. ... Lxe3? 3. Tc4+ Kd5 4. Ta4+ etc.
2. ... Lg3 3. Lf2 Ld6 4. g4 Txf2 5. Tc4+ Kd5 6. De4+ Sxe4 7. Tc1+ Txa2#
3. Lg1? Ld6 4. g4 Txa2+!
4. g3? Th3!
4. Se5,Sf4? Lxf5!
1. ... Se6? 2. f8=D+ Ld6 3. Dfb8! Dxb8 4. Db4+
1. ... Da8,De8 2. f8=D+ Ld6 3. Dxa8,Dxe8 droht 4. Db5+ cxb5 5. Txc7+, 4. D8b8 ... 5. D1b5+
play all play one stop play next play all
Harry Fougiaxis: Dual: 1...Lf2 2.Lxg5! (2011-12-22)
Ralf Kr?tschmer: Korrektur laut CG: +sBh6 (2015-02-10)
Anton Baumann: mit sBh6: C+ Gustav 4.2a (2022-12-03)
comment
Keywords: Switchback
Genre: s#
FEN: 3R2q1/2p2PPb/P1p3N1/K1k2Nn1/3p3p/4B1b1/B5Pr/1Q2n3
Input: Frank Müller, 2011-01-13
Last update: Alfred Pfeiffer, 2015-02-10 more...
60 - P1189023
Yaakov Mintz
6118 Phénix 194 04/2010
P1189023
(10+12) C+
BP in 9.5
1. f4 d5 2. f5 d4 3. f6 d3 4. fxe7 dxe2 5. exd8=L exd1=T+ 6. Ke2 Txc1 7. Lxc7 Txb1 8. Lg3 Txa1 9. Le1 Txe1+ 10. Kxe1
play all play one stop play next play all
Henrik Juel: The double CF is even double Prentos, as the promoted men are captured by officers (2018-12-29)
more ...
comment
Keywords: Ceriani-Frolkin Theme (Lt), Homebase (2), Unique Proof Game, Prentos Theme (Lt), Switchback (K)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 08:35:12 Stunden. (hh:mm:ss) Keine Lösung: BP 9.0.
FEN: rnb1kbnr/pp3ppp/8/8/8/8/PPPP2PP/4KBNR
Input: YM, 2011-03-03
Last update: A.Buchanan, 2023-07-11 more...
61 - P1192483
Stephen Rothwell
13309 Schach 02/1995
P1192483
(10+8) C+
s#3
1. Df1+? gxf1=S
1. Lb4? droht 2. Df1+ gxf1=L 3. Ld3+ 2. ... gxf1=S 3. Se3+ Lxc3! 1. ... Lxc3!
1. Dc1? Td1!
1. Dxg1? hxg1=S!

1. Dd1! droht 2. Sb6+ Kxc3 3. De1+ Txe1#
1. Dd1 Lxc3 2. Df1+ gxf1=L 3. Ld3+ Lxd3#
1. Dd1 Lxc3 2. Df1+ gxf1=S 3. Se3+ Sxe3#
play all play one stop play next play all
more ...
comment
Keywords: Dombrovskis theme, Switchback, under-promotion B/S
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 5B2/2N5/6B1/3N4/2kp3R/p1P5/P1P3pp/bK2Q1rr
Input: Frank Müller, 2011-04-14
Last update: Dieter Berlin, 2024-03-20 more...
62 - P1194772
Camillo Gamnitzer
S1605 The Problemist 03/1995
1. ehrende Erwähnung
P1194772
(15+9)
s#5
1. Td4 droht 2. Sg5+ Ke5 3. Lc7+ Kxd4 4. Se6+ Lxe6 5. Dxd3+ Sxd3#
1. Td4 Lxf7 2. Txd3 droht 3. Td6+ (Opferräumung des Turms für die Dame) Kxd6 4. Sb7+ Ke6 5. Db3+ Sxb3#
1. Td4 Lxf7 2. Txd3 Sc3 3. Dd5+ (Opferbahnung der Dame für wLh1) Sxd5 4. Lxd5+ Kd6 5. Lxf7+ Sxd3#
1. Td4 Lxf7 2. Txd3 Tb1 3. Te3+ Kd6 4. Df6+ Le6 5. Td3+ Sxd3#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.2a (2023-09-22)
comment
Keywords: Opferbahnung, Switchback
Genre: s#
FEN: 3B2b1/5N1p/2P1k1PP/N2R3R/1p6/3p1Q1p/n2PPP1P/r1n3KB
Input: Frank Müller, 2011-05-07
Last update: Frank Müller, 2011-05-07 more...
63 - P1216336
Camillo Gamnitzer
5728 Thema Danicum 10/1993
P1216336
(10+13) C+
s#5
1. Sc3+? Sxc3 2. Dc7 Lb1!

1. Dc7! droht 2. Df7+ Kd6 3. De6+ Lxe6#
1. Dc7! e3 2. Sc3+ dxc3 3. Db8 droht 4. Tc5+ Kd4 5. Df4+ 3. ... Txh4 4. Sxe3+ Txe3 5. De5+ Txe5#
play all play one stop play next play all
more ...
comment
Keywords: Batterieabbau, Line opening, Switchback
Genre: s#
Computer test: A. Baumann: Gustav 4.2a
FEN: 1QR5/BP4p1/6Pb/3k1Kpr/N2pp1NP/5p2/b1Ppr3/1n2q3
Input: Frank Müller, 2011-10-31
Last update: Dieter Berlin, 2023-12-05 more...
64 - P1216354
Camillo Gamnitzer
5825 Thema Danicum 01/1994
P1216354
(14+11) C+
s#5
1. Lc1! droht 2. Sd2 ... 3. Sxh3+ Sxh3#
1. Lc1 Lc5 2. Sd2? Txe5+ 3. bxc5 Txe6/Txg5!
1. Lc1 Lc5 2. b5 droht 3. Sd2 2. ... La7 3. bxa6 Tb2 4. Sxb2 droht 5. Lxe3+ 4. ... d2 5. Sd3+ Txd3#
play all play one stop play next play all
more ...
comment
Keywords: Unpinning, Switchback
Genre: s#
Computer test: A. Baumann: Gustav 4.2a
FEN: 1n6/br1P2R1/b2PQ3/4P1N1/1PN2kP1/P2prp1p/3BpK1P/4R1n1
Input: Frank Müller, 2011-10-31
Last update: Dieter Berlin, 2023-12-07 more...
65 - P1224803
Leonard Nicolaas de Jong
1801 Wiener Hausfrauen-Zeitung 29, p. 335, 20/07/1913
P1224803
(5+4) C+
#2
1. Tc6! droht 2. Tc8#
1. ... d5,d6 2. Td6#
1. ... Se7 2. fxe7#
1. ... dxc6 2. Td1#
play all play one stop play next play all
more ...
comment
Keywords: Sacrifice key, Switchback, Pawn mate, Line opening
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 1K1k1r2/3p1P2/3R1Pn1/8/8/8/8/4R3
Input: Felber, Volker, 2011-11-15
Last update: Dieter Berlin, 2024-03-09 more...
66 - P1234958
Wolfgang Bär
3316 Freie Presse (Chemnitz) 26/06/1992
4. ehrende Erwähnung
P1234958
(9+11) C+
#3
1. Dh1! droht 2. Sf6+ Txf6 3. Kxg3#
1. ... Lxe5 2. Da1 Sc3 3. Da8#
1. ... Txe5 2. Dh8 Lf7 3. Da8#
play all play one stop play next play all
more ...
comment
Keywords: Line opening, half-battery, black, Pinning, Four corners, Switchback (wD)
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 6b1/3B4/1p1Br3/1ppkPR2/np2N3/3Pp1p1/1bN3K1/Q7
Reprints: 432 Problemschach-Jahrbuch 1992 D , p. 206, 1992
Input: Felber, Volker, 2012-03-22
Last update: Dieter Berlin, 2022-11-04 more...
67 - P1240948
Franz Schrüfer
3825 Deutsche Schachzeitung 11/1874
P1240948
(7+3) C+
#2
1. Th3! (Zugzwang)
1. ... Kxd4 2. Lf2#
1. ... exd4 2. Th5#
1. ... e4 2. Tc4#
play all play one stop play next play all
Nr.4 in 'Drukar' doppelt vergeben

I)n den 'Bamberger Neuesten Nachrichten' abgedruckt mit der Widmung "Dem Verfasser der Rösselsprung-Aufgabe im vorigen Sonntagsblatte gewidmet." [Die Rösselsprungaufgabe erschien am 16.08.1874 mit der Autorangabe: "Von einem beim V. Bayr. Bundes-Schießen hier anwesenden deutschen Schützen eingesandt."]
more ...
comment
Keywords: Sacrifice key, Drag-in sacrifice, Switchback, Line opening, Zugzwang-Goal
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/8/2p5/K1k1p2R/3R2P1/1PN3B1/8/8
Reprints: 4 Bamberger Neueste Nachrichten 23/08/1874
60 Sammlung leichterer Schachaufgaben I 1881
4 Drukar (Charkiv) 5 09/1927
Input: Felber, Volker, 2012-06-07
Last update: Dieter Berlin, 2023-12-27 more...
68 - P1249955
Anatoly Stepochkin
37 Gravure 2012
3. Preis
P1249955
(6+4) C+
s#11*
* 1. ... d4#
1. La5! d4+ 2. Kd2+ Kd5 3. Ke1 Kc5 4. Db6+ Kd5 5. Te3 dxe3 6. Lc3 e2 7. Dc7 Ke6 8. Sf4+ Kf5 9. Dc5+ Kxf4 10. Ld2+ Kf3 11. Df2+ gxf2#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-28)
more ...
comment
Keywords: Pawn mate, Fata Morgana, Model mate, Switchback (L, k), Discovered check
Genre: s#
FEN: 8/8/6Q1/3pk3/6p1/3PK1p1/3BR1N1/8
Input: Frank Müller, 2012-09-25
Last update: Marcin Banaszek, 2023-01-04 more...
69 - P1251332
Vyacheslav Kopaev
106 Shakhmatnaya Poeziya 12/1991
1. Preis
P1251332
(9+14) C+
s#2
1. Df4? Tc5!

1. De4! droht 2. Dxb4+ Lxb4#
1. ... Lf1+,L~ 2. De5+ Txe5#
1. ... La4+ 2. S3b5+ Lxb5#
1. ... La6+ S7b5+ Lxb5#
1. ... Tc5 2. Dd3+ Lxd3#
play all play one stop play next play all
Auszeichnung in Schachmatnaja poesija.
Im Original steht in SPo die wD auf e6 und es gibt einen zusätzlichen wBb3.
Nightrider: Why is the original position not given here in the diagram?
I don't think that the author would be pleased to see his problem in a version with unprovided checks (1...Qxa7+, 1...Rxa3+, 1...b6+, 1...Sc4+), which he avoided carefully: He placed the wQ on e6 so that a battery check by the bBb5 could be answered by 2.Qe5+ and the black correction 1...Ba4+ could be answered successfully by 2.S3b5+ - thanks to the wP that he placed on b3 (so that wQe6 could not capture bRa2). It is obvious that the author took pains to avoid unprovided checks. (2022-10-13)
SCHRECKE: C+, popeye 4.87 (2022-10-13)
comment
Keywords: dentist theme, Echo, Unpinning, Black correction, Provoked check, Switchback
Genre: s#
FEN: q4b2/Npp3p1/2P3Bp/Kb3Q1r/1p5p/N1k1P3/rnPp4/B7
Reprints: 13610 Schach 06/1996
Input: Frank Müller, 2012-10-14
Last update: Marcin Banaszek, 2022-10-19 more...
70 - P1252804
Anatoly Stepochkin
SuperProblem (Website) 27/10/2012
59. Schnellkompositionsturnier
Preis
P1252804
(5+2) C+
s#7*
* 1. ... hxg2#
1. Te4! Kg3 2. Tg4+ Kf2 3. g3 Ke2 4. Td4 Kf2 5. Te4 Kxg3 6. Tg4+ Kf2 7. Tg2+ hxg2#
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Synthese-Meeraner, Themafigur: sB

Alternativer Veranstaltungsname: SuperProblem TT-59.
Gefordert waren Selbstmatts bei denen Schwarz nur K und Bauern hat.
Nachgänger steingetreu: Yuri Gordian, Seven Chess Notes 04/2020
Gunter Jordan: Im Nachdruck in feenschach 246 hat diese Aufgabe nur eine 2. ehrende Erwähnung. Müsste noch geklärt werden. (2022-12-25)
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comment
Keywords: Pawn mate, Change of Sacrifices, Fata Morgana, Minimal (b), Miniature, Corner mate, Model mate, Meerane-Thema, Switchback (k)
Genre: s#
Computer test: Popeye WINDOWS-32Bit V4.37 (264740 KB)
FEN: 8/8/8/8/8/4R2p/2N2kPN/7K
Reprints: 8616 Seven Chess Notes 171 04/2020
B zu 12235 feenschach 246, p. 211, 07-09/2021
Input: Frank Müller, 2012-11-01
Last update: Gunter Jordan, 2022-12-25 more...
71 - P1255567
Hans Peter Rehm
13038 Die Schwalbe 219 06/2006
P1255567
(8+11) C+
#7
1. Lxe4? droht 2. Ld3#, aber 1. ... g2!
1. Ke5! droht 2. Txd4#
1. ... Te7+ 2. Kf5 droht 3. Tc5#
2. ... Tc7 3. Le3 droht 4. Txd4#
3. ... dxe3 4. Ke5 Te7+ 5. Kf4 droht 6. Tc5+ Kd4 7. Sc2#
5. ... Tc7 6. Lxe4 ... 7. Ld3#
2. ... Ld7+ 3. Kf4 droht 4. Tc5#
3. ... d3 4. Tdxd3 droht 5. Tdc3+ Kd4 6. Sc2#
4. ... g2 5. Tbc3+ Kxb4 6. Sd5+ Ka4,Ka5 7. Ta3#
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Sally: Das Probesiel:
1. Lxe4!? [2. Ld3#] scheitert vorerst noch an.
1. - Bg2! Deshalb zunächst mit Schachprovokation 1. Ke5!
Nebenspiel :
2. - Ld7+,
3. Kf4 [Tc5#] - Bd3!,
4. Tddxd3 [5. Tdc3+ - Kd4, 6. Sc2#]
4. - Bed3,
5. Lxd3+ - Kd4, 6. Sc2#. (2017-03-19)
Anton Baumann: Informalturnier Mehrzüger 2006/2007: 1. Preis (2023-05-08)
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comment
Keywords: Switchback (Kt), Lepuschütz theme
Genre: n#
Computer test: Popeye Windows-64Bit v4.69
FEN: 4b3/2r2p1B/5N1B/1p1R4/1PkppK1p/1R4pr/7p/N7
Input: Gerd Wilts, 2012-12-13
Last update: Alfred Pfeiffer, 2017-03-21 more...
72 - P1255760
Ralf Krätschmer
13543 Die Schwalbe 228 12/2007
P1255760
(7+15) C+
#7
1. Lb2! droht 2. Le5#
1. ... d4 2. Txa8 droht 3. Txd8#
2. ... Txa8+ 3. La3 droht 4. Dd7#
3. ... Td8 4. Se8+ Txe8 5. Dxd4+ Ke7 6. Lxc5+ Kf7 7. Sxh6#
play all play one stop play next play all
Anton Baumann: Informalturnier Mehrzüger 2006/2007: 5.Preis (2023-05-08)
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comment
Keywords: Sacrifice of white pieces (TS), Switchback (t)
Genre: n#
Computer test: Popeye Windows-64Bit v4.69
FEN: n2r4/1pp3Qb/2pkpNpr/2pp4/2P2pN1/B5n1/R6b/K7
Input: Gerd Wilts, 2012-12-13
Last update: Alfred Pfeiffer, 2016-06-16 more...
73 - P1256119
Ralf Krätschmer
14337 Die Schwalbe 241 02/2010
P1256119
(10+9) C+
#6
1. Lh5 droht 2. Lxf7#
1. ... Ke6 2. Tb7 droht 3. Lxf7#
2. ... Lxb7 3. Lg4+ Kd5 4. Sa2 droht 5. Sb4#
4. ... La1 5. Tb2 Tc1,Lxb2 6. Sb4#
5. ... Txb2 6. Sxc3#
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Anton Baumann: Auszeichnung Informalturnier 2010: 3.Lob (2023-11-10)
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comment
Keywords: Sacrifice of white pieces (T), Switchback (Lk)
Genre: n#
Computer test: Popeye Windows-64Bit v4.69
FEN: 8/5p2/1R1p1P2/1P1k2K1/5PB1/2pPB2p/1b4bR/1rN4n
Input: Gerd Wilts, 2012-12-13
Last update: Alfred Pfeiffer, 2016-06-15 more...
74 - P1263343
Ralf Krätschmer
178 Rhein Main Presse 09/06/2001
P1263343
(6+13) C+
#5
1. De1+! Kxd4 2. Dd1+ Ke3 3. Le5 Sb3 4. Sd5+ Lxd5 5. Lf4# 3. ... Sc2 4. Sxg2+ Txg2 5. Lf4#
play all play one stop play next play all
more ...
comment
Keywords: Checking key, Flight-giving key, Switchback
Genre: n#
Computer test: SCHRECKE: Gustav 4.2c
FEN: b7/8/1p1B4/b4pr1/p2PpN2/2p1k2N/K5pp/n2Q2n1
Input: Felber, Volker, 2013-02-25
Last update: Dieter Berlin, 2023-07-13 more...
75 - P1268348
Theodor Steudel
F7 Problemkiste (93) 06/1994
P1268348
(2+4)
ser-h=4*
* 1. ... Df2=
1. g1=S 2. Se2 3. Sf4 4. Sg2 Df2=
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Anton Baumann: C+ Gustav 4.2a (2022-11-18)
comment
Keywords: Seriesmover, under-promotion (s), Minimal (D), Miniature, under-promotion key, pin-stalemate, Round Trip (b/s-4), Rückkehr nach Umwandlung
Genre: Fairies
FEN: 8/8/8/4K3/8/4Q2p/6pk/7b
Input: Erich Bartel, 2013-04-25
Last update: Gunter Jordan, 2022-11-19 more...
76 - P1282567
Theodor Steudel
Problemkiste 12/1992
P1282567
(2+2)
ser-h#8
Platzwechselcirce
wSU=Nachtreiter
1. h5! 2. h4 3. h3 4. h2 5. h1=N 6. Ne7 7. Nxd5[+wNe7] 8. Nh7 Ng6#
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Hübsche Rückkehr durch Rundlauf nach Exzelsior.
SCHRECKE: C+, popeye 4.87 (2022-10-23)
comment
Keywords: Seriesmover, Excelsior, Round Trip, Promotion (Märchen-), Rückkehr nach Umwandlung, Interchange Circe
Pieces: su = Nightrider (N)
Genre: Fairies
FEN: 7k/5K1p/8/3*2N4/8/8/8/8
Reprints: U6 Problemkiste (158) 04/2005
143 Scobs lignea 23/07/2017
Input: Erich Bartel, 2014-01-27
Last update: Arnold Beine, 2022-10-23 more...
77 - P1282729
Walter Irving Kennard
Checkmate 02/1904
P1282729
(8+11) C+
#2
1. Dg1! droht 2. Ld4#
1. ... Kxf6 2. Dg7#
1. ... Sxf6 2. Dh2#
1. ... Sxf2 2. Da1#
1. ... Dxd6 2. Tf5#
1. ... Td5 2. Sd7#
play all play one stop play next play all
more ...
comment
Keywords: Flight giving sacrifice key, Switchback (D), Drag-in sacrifice, Blocknutzung, Line opening
Genre: 2#
Computer test: SCHRECKE: popeye 4.89
FEN: 1qB3nK/1p3pQ1/1N1P1R1p/r3k2p/p6p/5P2/5B2/3n4
Reprints: 715 Schweizerische Schachzeitung , p. 172, 11/1906
68 Spectacular Chess Problems , p. 33, 1965
26 The American Two-move Chess Problem , p. 39, 1965
Input: Felber, Volker, 2014-02-03
Last update: Dieter Berlin, 2024-02-14 more...
78 - P1284667
Herbert Kromath
3507 Schach-Echo 6 23/03/1964
1. Preis
Zander-TT, 1963-1964
PR Wilhelm Hagemann + Heinz Zander
P1284667
(7+8)
#3
1. Dd4! droht 2. Db2 droht 3. Dh2#
2. ... exd3 3. Dd4#
1. ... Sxe5 2. Dd6 Zugzwang exd3 3. Dd4#
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Meeraner, Urform, Themafigur: wD
SCHRECKE: C+, popeye 4.87 (2022-12-13)
comment
Keywords: Erweiterte Drohung, Irreparable Drohung, Zander-Thema, Switchback (D), Meerane-Thema, Rücknahme Schlüsselzug
Genre: 3#
FEN: 8/3p4/3Qp1nB/1K2Ppp1/4pk1p/3PN2R/8/8
Reprints: 1 Die Schwalbe 297, p. 129, 06/2019
Input: Felber, Volker, 2014-04-26
Last update: Rainer Staudte, 2022-12-13 more...
79 - P1287214
Fritz Apscheneek
27 Nedela (Riga) 01/04/1923
P1287214
(9+5)
s#3
1. Sf7 Lb8 2. Tc7+ Kxc7 3. La7 Lxa7#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.89 (2023-12-14)
comment
Keywords: Discovered check, Rook sacrifice, Switchback (l), Model mate
Genre: s#
FEN: 2B5/b2P4/1k6/p1RPN3/P7/4B2p/6pP/6K1
Input: Mario Richter, 2014-08-23
Last update: Gunter Jordan, 2023-12-14 more...
80 - P1288711
Claus Grupen
2424 Landeszeitung für die Lüneburger Heide 2014
P1288711
(6+4)
#10
1. Kf3 Kc4 2. e4 Kd4 3. Kf4 Kc4 4. Ke3 Kb5 5. e5 Kc4 6. Ke4 Kb5 7. e6 Kc4 8. e7 Kb5 9. e8=S Kc4 10. Sd6#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-07-08)
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comment
Keywords: under-promotion (S), Excelsior white, Switchback (Kk), Round Trip (K-3)
Genre: n#
FEN: 8/8/p1p5/PkN5/1P6/p3K3/N3P3/8
Input: Frank Müller, 2014-09-29
Last update: Gunter Jordan, 2024-02-19 more...
81 - P1288890
Gianni Donati
P0333 StrateGems 2012
3. Preis
P1288890
(13+14) C+
BP in 22.0
1. f3 h5 2. Kf2 Th6 3. Kg3 h4+ 4. Kg4 h3 5. Sxh3 Te6 6. Sf2 d5 7. h4 d4 8. h5 d3 9. h6 dxc2 10. Th5 Dd3 11. Tb5 Dc3 12. dxc3 a6 13. Lg5 axb5 14. Lf6 exf6 15. e3 Ld6 16. Lc4 Kd7 17. Dd3 Te8 18. Sd2 Se7 19. Th1 Th8 20. Th5 Sg8 21. Tc5 Ke8+ 22. Df5 Lf8
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PR R.MacCracken: A well-concealed bR Rundlauf for screening with K/B/S switchbacks to let it come back home. The final position is appealing to a solver - Black looks like he has hardly moved, and yet it is not an obvious promotion-themed problem.
Henrik Juel: Natch 3.1 did little in half an hour
Stopped at pos. 1 (2018-12-30)
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comment
Keywords: Unique Proof Game, Pure Round Trip (t), Switchback (kls)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.0 00:04:01 Minuten. (hh:mm:ss) Keine Lösung: BP 21.0, BP 21.5.
FEN: rnb1kbnr/1pp2pp1/5p1P/1pR2Q2/2B3K1/2P1PP2/PPpN1NP1/8
Input: Mario Richter, 2014-10-08
Last update: A.Buchanan, 2023-03-10 more...
82 - P1298911
Johannes Kohtz
Carl Kockelkorn

Deutsches Wochenschach 1907
P1298911
(6+8) C+
#4
1. Lc6+! Kxd3 2. Lb5+ Ke4 3. Dd8 Kf5 4. Ld3# 3. ... Kf3 4. Da8#
2. ... Kd4 3. Db4+ Kd5 4. Dc4#
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(221) Handschriftliche Lebenserinnerungen (Sächsische Landes- und Universitätsbibliothek (SLUB)) von Johannes Kohtz.
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comment
Keywords: Switchback, Rook sacrifice, Checking key
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 6nq/p5n1/4p3/QB6/4k1p1/3R2B1/5P2/1K4b1
Reprints: 256 Versunkene Schätze , p. 112, 1998
Input: Felber, Volker, 2015-03-08
Last update: Dieter Berlin, 2022-09-01 more...
83 - P1315401
Sergii I. Tkachenko
11649 Schach-Echo , p. 347, 09/1991
P1315401
(7+8)
h#15
1. Lf2 a3 2. Le1 Kg1 3. Ld2 Kh1 4. Lc1 Kg1 5. Lxa3 Kh1 6. Lc5 Kg1 7. a3 Kh1 8. a2 Kg1 9. a1=S Kh1 10. Sb3 cxb3 11. c2 b4 12. c1=T bxc5 13. Tb1 c6 14. Tb7 c7 15. Ta7 c8=D#
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Schachecke in SE ab 01/1992 eingestellt. Lösung bis 12/1991 nicht veröffentlicht.
Henrik Juel: solution
1.Lf2 a3 2.Le1 Kg1 3.Ld2 Kh1 4.Lc1 Kg1 5.Lxa3 Kh1 6.Lc5 Kg1 7.a3 Kh1 8.a2 Kg1 9.a1=S Kh1 10.Sb3 cxb3 11.c2 b4 12.c1=T bxc5 13.Tb1 c6 14.Tb7 c7 15.Ta7 c8=D#
Three promotions (2016-01-13)
SCHRECKE: Ab 6. Zug dualistisch, z.B.: 6. Lb4 Kg1 7. a3 Kh1 8. a2 Kg1 9. a1=S Kh1 10. Sb3 cxb3 11. Ld6 b4 12. c2 b5 13. c1=S b6 14. Sxe2 Lxe2 15. Lb8 Lf3# (2023-07-24)
comment
Keywords: Promotion in the mating move, konsekutive Umwandlungen 3 (stD), Switchback (K), Entblockung, Selfblock, Corner mate, Excelsior white, Antiphönix
Genre: h#
FEN: k7/8/p7/8/p2p4/2pPp1p1/P1P1P1P1/5BbK
Input: Felber, Volker, 2016-01-13
Last update: Gunter Jordan, 2023-07-23 more...
84 - P1334004
Mykhailo Marandyuk
Evgen S. Orlov

C015 SuperProblem (Website) 24/06/2014
1.-3. Preis (#7-N)
P1334004
(11+11)
#12
1. Lc7! droht 2. Sg5#
1. ... Lh4 2. Le5 droht 3. Txd4#
2. ... Lf2 3. Lb8 Lh4 4. La7 b6 5. Lxb6 Lf2 6. Lc7 Lh4 7. Le5 Lf2 8. Lb8 Lh4 9. La7 Lf2 10. Lf5+ Kxd5 11. Tb5+ Kc6 12. Tc5#
play all play one stop play next play all
Michael Herzberg: ...siehe P1378921 (2022-09-08)
Anton Baumann: C+ Gustav 4.2a (2023-04-11)
comment
Keywords: Switchback, Model mate
Genre: n#
FEN: K7/1p2pN2/1B2B3/3P3n/1R1pkpP1/P7/PpbPPb2/1q3r2
Input: Felber, Volker, 2017-05-12
Last update: Alfred Pfeiffer, 2017-05-15 more...
85 - P1339432
Michael Barth
Silvio Baier

Die Schwalbe 2014
P1339432
(15+15) C+
PG in 19.0
1. b4 b5 2. Lb2 Lb7 3. Ld4 Ld5 4. Lb6 axb6 5. Sc3 Ta3 6. Se4 Tb3 7. Sg5 Tb1 8. Sxh7 Tc1 9. Tb1 Sc6 10. Tb3 Ta1 11. Db1 Da8 12. Kd1 Kd8 13. Kc1 Kc8 14. Kb2 Kb7 15. Dd1 Ka6 16. Ka3 Tc1 17. Tb1 Le6 18. Ta1 Tb1 19. Sg5 Tb3+
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Reto: Mit Stelvio 1.4 dauert das nur noch 7min (2023-06-21)
comment
Keywords: Unique Proof Game, Lois Theme (Tt), Switchback (St), Interchange (Tt x2)
Genre: Retro
Computer test: Stelvio 1.0 (5,5d)
FEN: q4bnr/2ppppp1/kpn1b3/1p4N1/1P6/Kr6/P1PPPPPP/R2Q1BNR
Reprints: H3 The Problemist 26-3, p. 119, 05/2017
Input: A.Buchanan, 2017-09-15
Last update: Silvio Baier, 2023-03-05 more...
86 - P1340215
Roberto Osorio
Jorge Joaquin Lois

R470 The Problemist vol.24-8, p. 341, 03/2014
after Satoshi Hashimoto
Lob
The Problemist 2013-2014
P1340215
(15+9)
PG in 18.5
1. d3 g5 2. Lxg5 Lg7 3. Dd2 Lc3 4. Sxc3 c5 5. 0-0-0 Dc7 6. Sb1 Dg3 7. hxg3 h6 8. Txh6 b6 9. Te6 Th3 10. gxh3 Lb7 11. Lg2 Lf3 12. Sxf3 Sf6 13. Th1 Se4 14. Dd1 Sd2 15. Kxd2 fxe6 16. Ke1 Kf7 17. Lc1 Kf6 18. Sg1 Ke5 19. Lf1
play all play one stop play next play all
Judge's comment [Thomas Brand]: "This elegant proof game seems me original enough compared with Hashimoto's Probleemblad 1999, 3rd Prize, (PDB P1000642), even though the theme is not doubly set. The only missing white man is a Rook captured at e6, but Ra1 could not leave home."
Henrik Juel: The white plan is obvious, and Black ensures uniqueness by putting his men to be captured on squares, where White can go anyway, and by a late king's walk
This proof game is an enjoyable solving object showing that man can beat the computer; Euclide was still trying to find a strategy (a list of moves, possibly infeasible, that leads to the diagram position), when I had solved the problem and written the present lines...
You might call Pg3,h3 impostors also, as well as Th1 (2017-09-27)
Moldenhauer: Computerprüfung: C+ Natch 3.3 in 5 Std. 57 Min. nur obige Lösung
BP in 17.5 keine Lösung. (2022-09-05)
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comment
Keywords: Unique Proof Game, Impostor (TPP), Switchback (SLDKLS), Cross-capture (gh)
Genre: Retro
FEN: rn6/p2pp3/1p2p3/2p1k3/8/3P2PP/PPP1PP2/1NBQKBNR
Reprints: R470 The Problemist vol.25-8, p. 347, 03/2016
Input: A.Buchanan, 2017-09-27
Last update: Alfred Pfeiffer, 2019-06-03 more...
87 - P1347106
Jeff Coakley
38 The Puzzling Side of Chess 139 21/10/2017
P1347106
(11+8) C+
BP in 10,5
1. a4 Sc6 2. a5 Sxa5 3. Txa5 h5 4. Txh5 c5 5. Txc5 Txh2 6. Txc8 Th8 7. Txh8 Txc8 8. Txg8 Txc2 9. Txf8+ Kxf8 10. Dxc2 Ke8 11. Dd1
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comment
Keywords: Unique Proof Game, Homebase (2), Switchback (Dk)
Genre: Retro
Computer test: Computerprüfung: C+ Popeye 4.90 (16GB) 1 Min. 48 Sek. Keine Lösung: BP 9.5, 10.0.
FEN: 3qk3/pp1pppp1/8/8/8/8/1P1PPPP1/1NBQKBN1
Input: A.Buchanan, 2018-02-21
Last update: A.Buchanan, 2023-12-04 more...
88 - P1347107
Jeff Coakley
40 The Puzzling Side of Chess 139 21/10/2017
P1347107
(9+8) C+
BP in 10,5
1. Sf3 e5 2. Sxe5 Dh4 3. Sc6 Dxh2 4. Sxa7 Txa7 5. Txh2 Txa2 6. Txh7 Txa1 7. Txh8 Txb1 8. Txg8 Txb2 9. Txg7 Lxg7 10. Lxb2 Lf8 11. Lc1
play all play one stop play next play all
more ...
comment
Keywords: Unique Proof Game, Homebase (2), Switchback (Ll)
Genre: Retro
Computer test: Computerprüfung: C+ Popeye 4.90 (16GB) 1 Min. 24 Sek. Keine Lösung: BP 9.5, 10.0.
FEN: 1nb1kb2/1ppp1p2/8/8/8/8/2PPPPP1/2BQKB2
Input: A.Buchanan, 2018-02-21
Last update: A.Buchanan, 2023-12-04 more...
89 - P1349332
Yoav Ben-Zvi
P0360 StrateGems SG63 07/2013
after Kay Soltsien & Hans Heinrich Schmitz,
Die Schwalbe 1960
P1349332
(16+16) C+
PG in 26.0
1. c4 c5 2. Db3 Db6 3. Dh3 Dh6 4. b3 b6 5. La3 La6 6. Lb4 Lb5 7. Sa3 Sa6 8. 0-0-0 0-0-0 9. Kb2 Kb8 10. Tc1 Tc8 11. Tc3 Tc6 12. Tg3 Tg6 13. Tg4 e6 14. g3 Le7 15. Lg2 Lg5 16. Le4 Se7 17. Sf3 Tc8 18. Tc1 Tc6 19. Tc3 Td6 20. Te3 Td3 21. Dg2 Tc3 22. h3 Tc1 23. Tc3 Ta1 24. Lb1 Kc8 25. Sc2 Sb8 26. Ka3 a6
play all play one stop play next play all
Zur Aufgabe von K. Soltsien & H. H. Schmitz siehe P1013024
Henrik Juel: Nice capture-free proof game with several back-tracking moves and partially symmetrical play
Yoav Ben-Zvi: The primary thematic content lies in Turton doubling: 20.Rc3-e3 (WR crosses d3 for [BRh8]) with Switchback 22.Rc3-e3 and Bristol clearance: 8...0-0-0, 9...Kc8-b8 (BK crosses c8 for [BRh8]) with Switchback 24...Kb8-c8.
The main motivation for composing this problem is as a challenge for solving software in a capture-free game (essentially a piece-shuffle). (2018-04-24)
Henrik Juel: It was a challenge for my patience, at least
Natch 3.1 did not find the solution in an hour
Stopped at pos. 1 (2018-12-31)
ras@bsiag.com: Challenge accepted! Stelvio 0.94 can solve this in about 3h. It is C+. Admittedly, I threw a lot of hardware at it (but without parallelizing). I'm sure the solving time will be reduced considerably in the future. (2022-12-12)
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comment
Keywords: Turton, Bristol, Switchback (Tks), Unique Proof Game, Capture-free
Genre: Retro
Computer test: Stelvio 1.0
FEN: 1nk5/3pnppp/pp2p1rq/1bp3b1/1BP3R1/KPR2NPP/P1NPPPQ1/rB6
Input: Yoav Ben-Zvi, 2018-04-21
Last update: Silvio Baier, 2023-03-02 more...
90 - P1355655
Joseph Böhm
Die Welt 19/04/1973
P1355655
(6+4) C+
#2
1. Le8!
1. ... Kxe4 2. Lg6#
1. ... Lxe4 2. Lb5#
1. ... Lxe8 2. Dd5#
1. ... Se3,Sg4~ 2. Dxe3#,De3#
1. ... Sc5,Sb7~ 2. Sxc5#,Sc5#
1. ... Ld5,Lc6~ 2. Dxd5#,Dd5#
play all play one stop play next play all
Hinterstellung mit Rückkehrmotiv

'Die Welt (mit diesem Nachdruck an den 4. Todestag des Autors am 16.08. erinnernd): "Eine meisterhafte Komposition (ohne Bauern!). Das Problem wurde mehrfach nachgedruckt, u.a. im Juni 1973 in der National-Zeitung Basel, die dazu schrieb: 'Ein bildschöner Zweizüger mit einem Schlüssel im Loydschen Geist.'"
udo.de: aber steingetreuer Vorläufer: Heinz Lies, Bochumer Anzeiger und General-Anzeiger, 2.11. 1929, Nr. 53 (2024-03-15)
more ...
comment
Keywords: Aristocrat, Zugzwang-Goal, Switchback, ambush
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 8/1n6/2b1N1B1/6Q1/4R1nN/3k4/1K6/8
Reprints: National-Zeitung (Basel) 06/1973
6. Die Schwalbe 60, p. 510, 12/1979
1300 Die Welt 12/08/1983
Input: Mario Richter, 2018-09-29
Last update: Dieter Berlin, 2024-03-15 more...
91 - P1361354
Sergey Smotrov
2138 The Macedonian Problemist 55-56 01-08/2018
P1361354
(4+6)
s#16
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#
play all play one stop play next play all
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
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...
92 - P1371278
Dieter Müller
Sven Trommler

Probleemblad 2003
2. Lob
Tim Krabbe-60
P1371278
(9+7)
#5
1. Lg2! droht 2. e4 ... 3. Lh3#
1. ... Sa6 2. Sf4+ Ke5 3. Sxd3+ Ke6 4. Sf4+ Ke5 5. d4#
1. ... Lb7 2. Sf8+ Ke5 3. Sxd7+ Ke6 4. Sf8+ Ke5 5. d7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-07-21)
comment
Keywords: Batteriematt diagonal, discovered checkmate, Switchback (Sk), Entblockung, Pawn mate
Genre: n#
FEN: 2b5/2Bp4/1p1Pk1NN/6Pp/1n6/3pPB2/3P4/1K6
Input: Felber, Volker, 2020-01-01
Last update: Gunter Jordan, 2023-07-21 more...
93 - P1385315
Fadil Abdurahmanovic
Bernd Ellinghoven

11179 feenschach 213 05-06/2015
3. Preis
Informalturnier 2015
PR Jakob Leck
P1385315
(3+15)
h#6
0.1.1...
1. ... Lg7 2. Te6 Lxh6 3. Lh8 Lg7 4. Lf5 La1 5. Lc3 dxc3 6. Ke5 c4#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2a, Brute Force (2022-08-14)
comment
Keywords: discovered checkmate, Anti-Bristol, bi-coloured Bristol, Battery creation, Batteriematt diagonal, corner to corner (L-l), Remote selfblock, Indian, Klasinc theme (L-l), Line opening, Model mate, Interchange (L-l), Switchback (L), Selfblock
Genre: h#
FEN: 7B/8/3n1rpr/3k2p1/4pn2/p2p1ppb/3P1p2/b6K
Reprints: 3-3 feenschach 215, p. 254, 09-10/2015
feenschach 239, p. 334, 01-03/2020
Input: Gunter Jordan, 2021-01-12
Last update: Gunter Jordan, 2022-08-14 more...
94 - P1386359
Kurt Keller
C11885 The Problemist 28-1, p. 15, 01/2021
New Year greetings
P1386359
(8+1) C+
#4

Only two #3s this time, and no excessively long moremovers. [...] Keller presents with New Year greetings a symmetrical Christmas tree – but the 2 variations are not symmetrical.
(Jim Grevatt (Headly, England): CHAMPIONSHIP ORIGINALS. THREE- and MOREMOVERS, in: THE PROBLEMIST, JANUARY 2021)
Comments:
  • Yet Another Chess Problem Database (...)
  • Meson Chess Problem Database (249089)

Rosalie Fay: 1. Ld2 zz Kf4 2. Sf1+ Kg4 3. Te4+ Kh5 4. Sg3#;
1. ... Kd4 2. Kd6 zz Ke4 3. Tf2 zz Kd4 4. Tf4#
C+ Popeye Windows-64Bit v4.69 (2023-12-31)
comment
Keywords: Symbol problem (Christmas tree), Option key, Rex solus, Switchback (k), Model mate, Battery creation, Battery play, Discovered check, Batterieabbau (Te2/Se3), Symmetrical position, Asymmetrical solution, Brian Stephenson Collection (249089)
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 8/8/4K3/3P1P2/4k3/4N3/2P1R1P1/4B3
Input: Kurt Keller, 2021-02-10
Last update: Kurt Keller, 2021-07-20 more...
95 - P1388717
Ralf Krätschmer
R554 The Problemist 05/2020
P1388717
(11+9) C+
BP in 11.5
1. b4 f5 2. b5 f4 3. b6 f3 4. bxc7 fxg2 5. cxb8=S gxh1=D 6. Sxd7 Dd5 7. Sxf8 Dxd2+ 8. Lxd2 Dxd2+ 9. Sxd2 Kd8 10. Sxh7 Txh7 11. Tc1 Th8 12. Sb1+
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Natch 3.3 in 5 Tage 10 Std. 49 Min. eine Lösung gefunden.
Prüfung BP in 11 u. 12, keine Lösung! (2022-08-30)
A.Buchanan: Since the position is check, the only shorter PG which requires examination is 10.5 (2022-08-30)
Moldenhauer: Computerüberprüfung: BP in 10.5 Natch 3.3 keine Lösung! Zeit 16 Std. 22 Min. (2022-09-01)
more ...
comment
Keywords: Discovered check, Unique Proof Game, Excelsior black, Excelsior white, Prentos Theme (Sd), Switchback (St), Promotion (d), under-promotion (S), x pieces capture on one square (4)
Genre: Retro
Computer test: Computerprüfung: C+ Natch 3.3 in 5 Tage 10 Std. 49 Min. eine Lösung gefunden. Prüfung BP in 11 u. 12, keine Lösung!
FEN: r1bk2nr/pp2p1p1/8/8/8/8/P1P1PP1P/1NRQKBN1
Input: Gunter Jordan, 2021-04-18
Last update: A.Buchanan, 2022-08-30 more...
96 - P1389155
Silvio Baier
Thierry Le Gleuher
Ralf Krätschmer
Roberto Osorio

169 feenschach 237, p. 239, 09-10/2019
P1389155
(11+10) C+
BP in 9.5
1. b4 f5 2. b5 f4 3. b6 f3 4. bxa7 fxg2 5. axb8=S gxh1=T 6. Sxd7 Txh2 7. Sxf8 Txf2 8. Sxh7 Txh7 9. Kxf2 Th8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 03:05:53 Stunden. (hh:mm:ss)
Keine Lösung: BP 9.0. (2023-07-23)
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (St), Switchback (Kt), under-promotion (St)
Genre: Retro
Computer test: Stelvio 1.4
FEN: r1bqk1nr/1pp1p1p1/8/8/8/8/P1PPP3/RNBQKBN1
Input: Gunter Jordan, 2021-05-01
Last update: Silvio Baier, 2023-08-15 more...
97 - P1389187
Thierry Le Gleuher
Ralf Krätschmer
Roberto Osorio

170 feenschach 237, p. 239, 09-10/2019
P1389187
(11+11) C+
BP in 9.5
1. b4 g5 2. b5 g4 3. b6 g3 4. bxa7 gxh2 5. axb8=S hxg1=T 6. Sc6 Txg2 7. Sxd8 Txf2 8. Sxb7 Lxb7 9. Kxf2 Lc8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 04:00:17 Stunden. (hh:mm:ss)
Keine Lösung: BP 9.0. (2023-07-23)
comment
Keywords: Unique Proof Game, Homebase (2), Prentos Theme (St), Switchback (Kl), under-promotion (St), Ceriani-Frolkin Theme (St), Prenix (S), Future Proof Game (Prentos+Sback)
Genre: Retro
Computer test: Stelvio 1.4
FEN: r1b1kbnr/2pppp1p/8/8/8/8/P1PPP3/RNBQKB1R
Input: Gunter Jordan, 2021-05-02
Last update: Silvio Baier, 2023-08-15 more...
98 - P1389374
Silvio Baier
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Ralf Krätschmer
Roberto Osorio

175 feenschach 237, p. 240, 09-10/2019
P1389374
(11+11) C+
BP in 9.5
1. b4 f5 2. b5 f4 3. b6 f3 4. bxc7 fxg2 5. cxd8=S gxf1=L 6. Se6 Lxe2 7. Sxf8 Lxd1 8. Sxh7 Txh7 9. Kxd1 Th8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Kt), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 02:01:02 Stunden.(hh:mm:ss) Keine Lösung: BP 9.0.
FEN: rnb1k1nr/pp1pp1p1/8/8/8/8/P1PP1P1P/RNB1K1NR
Input: Gunter Jordan, 2021-05-07
Last update: A.Buchanan, 2023-07-29 more...
99 - P1389383
Thierry Le Gleuher
Gunter Jordan
Raúl Jordan
Roberto Osorio

176 feenschach 237, p. 240, 09-10/2019
P1389383
(11+11) C+
BP in 9.5
1. f4 h5 2. f5 h4 3. f6 h3 4. fxg7 hxg2 5. gxf8=S gxf1=L 6. Se6 Lxe2 7. Sxd8 Lxd1 8. Sxb7 Lxb7 9. Kxd1 Lc8 10. Ke1
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Kl), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 04:29:10 Stunden.(hh:mm:ss) Keine Lösung: BP 9.0.
FEN: rnb1k1nr/p1pppp2/8/8/8/8/PPPP3P/RNB1K1NR
Input: Gunter Jordan, 2021-05-08
Last update: A.Buchanan, 2023-07-29 more...
100 - P1389414
Silvio Baier
Thierry Le Gleuher

177 feenschach 237, p. 240, 09-10/2019
P1389414
(11+11) C+
BP in 11.0
1. h4 g5 2. hxg5 h5 3. g6 h4 4. g7 h3 5. gxf8=S hxg2 6. Se6 gxf1=L 7. Sxd8 Lxe2 8. Sc6 Lxd1 9. Kxd1 Sa6 10. Ke1 Tb8 11. Sxb8 Sxb8
play all play one stop play next play all
Silvio-Baier-40-JT: Thema: Gesucht waren eindeutige orthodoxe Beweispartien mit weißer und schwarzer Homebasestellung, wobei auf jeder Seite ein Bauer umwandeln und von einer Figur (keinem Bauern) geschlagen werden sollte und zudem genau ein Stein eine zweizügige Rückkehr vollführt.
more ...
comment
Keywords: Unique Proof Game, Excelsior black, Excelsior white, Homebase (2), Prentos Theme (Sl), Switchback (Ks), under-promotion (Sl)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.4 in 147:48:36 Stunden. (hh:mm:ss) Keine Lösung: BP 10.5 in 39:42:33 Stunden.
FEN: 1nb1k1nr/pppppp2/8/8/8/8/PPPP1P2/RNB1K1NR
Input: Gunter Jordan, 2021-05-09
Last update: A.Buchanan, 2023-08-08 more...
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