Die Schwalbe

36 problem(s) found in 3338 milliseconds (displaying 36 problem(s)). [COMMENTDATE>=20200919 AND NOT S='Sammlung leichterer Schachaufgaben III' AND K='Dauerschach'] [download as LaTeX]

1 - P1086747
Frank Müller
Die Schwalbe 02/2005
Hemmo Axt 60 JT
4. Preis
P1086747
(4+4)
s#22
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#
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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
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...
2 - P1198917
Franz Ebner
482 Gaudium 102 08/2010
P1198917
(3+9)
#10
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
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"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)
Anton Baumann: C+ Gustav 4.1d (2021-01-13)
comment
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...
3 - P1200434
Torsten Linss
14606 Die Schwalbe 10/2010
1. Lob
P1200434
(5+2) C+
s#16
1. De8+? Kf6?? 2. De7+ Kf5 3. De4+ Kf6?? 4. Df3+ Dxf3# scheitert am wSh5.
1. Dh7+! Kf8 2. Dh6+ Kf7 3. Tg7+ Kf8 4. Tg5+ Kf7 5. Tf5+ Kg8 6. Sf6+ Kf7 7. Sg8+ Kxg8 8. Tg5+ Kf7 9. Tg7+ Kf8 10. Tg1+ Kf7 11. Dh7+ Kf8! 12. Dh8+ Kf7 13. De8+ Kf6 14. De7+ Kf5 15. De4+ Kf6 16. Df3+ Dxf3#
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Anton Baumann: C+ Gustav 4.1d (2020-12-26)
comment
Keywords: Aristocrat, Epaulettenmatt, Langzügige Miniatur, Minimal (d), Miniature, Checking key, Perpetual check, Model mate, Switchback (Tk), Rücknahme Schlüsselzug
Genre: s#
FEN: 7Q/5k2/8/7N/8/8/8/3qRKR1
Input: Frank Müller, 2011-08-15
Last update: Gunter Jordan, 2021-01-06 more...
4 - P1208471
Robert Sharp
F1535 The Problemist 05/1995
Lob
P1208471
(11+10)
#8
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#
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Duplicate Diagram: P0574294

SCHRECKE: C+, popeye 4.85 (2021-03-28)
comment
Keywords: Promotion (GGGGGGGG), konsekutive Umwandlungen 8 (GGGGGGGG), Promotion key, Checking key, Perpetual check, Promotion to fairy pieces
Pieces: du = 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...
5 - P1280119
Gerald Ettl
6712 feenschach 11/1994
Lob
P1280119
(6+8)
s#14
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#
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Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' found no flaws (2022-08-15)
comment
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...
6 - 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#
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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...
7 - P1361830
Vladimir I. Katsnelson
Leonard I. Katsnelson

Wetscherni Peterburg 10/11/2017
4. Ehrende Erwähnung
P1361830
(5+3)
Remis
1. fxg5+? Kxg5! Schwarz gewinnt

1. g4! Th4 2. Kg3 Le7 3. g5+ Lxg5 4. fxg5+ Kxg5 5. f6! Tg4+ 6. Kh3! Th4+ 7. Kg3 Tg4+ 8. Kh3
5. ... Th6? 6. f7! Weiß gewinnt
5. g7? Tg4+
2. ... Th1 3. fxg5+ Kg7 4. Kg2,Kf2,Kf3,Kf4
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Anton Baumann: mögliche Lösung: 1.g4! Th4 2.Kg3 Th1 3.fxg5+ Kg7 4.Kg2 Ta1 5.Kf3 =
2. ... Lf6 3.g5+ Lxg5 4.fxg5 Kxg5 5.f6! Tg4+ 6.Kh3 Tf4 7.g7 Th4+ 8.Kg3 Tg4+ 9.Kf3 Kxf6 10.Kxg4 =
2. ... Ld8 3.g5+ Kh5 4.g7 Lxg5 5.g8=D Tg4+ Kf3 Txf4 7.Ke2 Txf5 = (2023-05-23)
comment
Keywords: Positional draw, Perpetual check
Genre: Studies
FEN: 8/8/6Pk/5Pbr/5P2/6P1/6K1/8
Input: Mario Richter, 2019-03-02
Last update: Rainer Staudte, 2023-05-26 more...
8 - P1368574
Eugeniusz Iwanow
537 Problemista 10/1963
P1368574
(3+5)
Remis
1. Txd7! Kf8! 2. d6 e2 3. Te7 Te8 4. Tf7+ Kg8 5. Txg7+ Kh8 6. Th7+ Kg8 7. Tg7+ Remis
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Anton Baumann: Dual: 2.Tf7+ Ke8 3.d6 Tb6 4.Te7+ Kd8 5.Txe3 =
3. ... Tb3 4.Te7+ Kd8 5.Kxg7 = (nach Nalimov) (2022-04-19)
comment
Keywords: Perpetual check
Genre: Studies
FEN: 1r4k1/3p2p1/3R2K1/3P4/8/4p3/8/8
Input: Marcin Banaszek, 2019-10-27
Last update: Marcin Banaszek, 2019-10-28 more...
9 - P1380824
Sergey Smotrov
1374 Rochade Europa 05/1997
P1380824
(5+11)
s#19
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#
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Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' found no flaws (2020-10-11)
comment
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...
10 - P1383362
Sergey Smotrov
18013 Die Schwalbe 300 12/2019
Spezialpreis
PR Mark Erenburg
WCCI=7
P1383362
(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#
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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
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comment
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...
11 - P1385979
Sergey Smotrov
F235 SuperProblem (Website) 20/11/2020
1. Lob
P1385979
(4+6)
s#20
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#
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Judge Mihail Hramtsevic
Award 13.09.2021
Henrik Juel: Popeye 4.61 with 'opt non 1 1 thr 0' found no flaws (2021-01-29)
comment
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...
12 - P1385984
Yuri Paramonov
F239 SuperProblem (Website) 30/11/2020
P1385984
(5+2) C+
s#15
1. De3+! Kh2,Kh4 2. Df2+ Kh3 3. Tg3+ Kh4 4. Tc3+! Kg5 5. Dg3+ Kf5,Kf6/Kh6 6. De5+/Dh4+ Kg6 7. Dh5+ Kf6 8. Tf7+ Ke6 9. Lg4+ Kd6 10. Tf6+ Ke7 11. Df7+ Kd8 12. Dg8+! Ke7 13. Te6+ Kd7 14. Tee3+! Kd6 15. Dd5+! Dxd5#
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comment
Keywords: Aristocrat, Minimal (D), Miniature, Checking key, Perpetual check, Epaulettenmatt
Genre: s#
Computer test: Gustav 4.1d
FEN: q7/1R2Q3/8/8/3K4/7k/8/3B2R1
Input: Marcin Banaszek, 2021-01-29
Last update: Marcin Banaszek, 2021-01-31 more...
13 - P1386918
Sergey Smotrov
2046 Gaudium 229 31/07/2020
Lob
PR Michael Barth
P1386918
(5+3) C+
s#14
1. Tc1+? Kxc1+ 2. Db2#
1. Tc3+! Kd2 2. Tce3+ Kc2 3. T1e2+ Kc1 4. Sd3+ Kd1 5. Sb2+ Kc1 6. Te1+ Kc2 7. Dc5+ Kd2 8. Sc4+ Kc2 9. Se5+ Kd2 10. Db4+ Kc2 11. Tc3+ Kd2 12. Td3+ Kc2 13. Tc1+! Kxc1+ 14. Db2+ Dxb2#
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Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' found no flaws (2021-03-02)
comment
Keywords: Discovered check, Aristocrat, Battery creation, Berlin Theme, Perpetual check, Logical Problem, Switchback (DTT), Checking key
Genre: s#
Computer test: Gustav 4.2e
FEN: 8/8/5r2/8/1Q6/3R4/K1k2N1q/4R3
Input: Gunter Jordan, 2021-03-02
Last update: Nightrider, 2024-01-13 more...
14 - P1388001
Aleksey Oganesyan
F21 Shakhmatnaya Kompozitsiya 154 12/2020
P1388001
(8+4)
s#24
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#
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Alexej Oganesjan: It's possible fix of cooked P1307629 (2015) (2022-03-29)
comment
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...
15 - P1388234
Jozef Lozek
575 PAT 27 12/1999
P1388234
(13+11) C+
#19
1. Lb7+! Kxb7 2. Lxc6+ Kc8 3. Lb7+ Kxb7 4. Lxd5+ Kc8 5. Lb7+ Kxb7 6. Lxe4+ Kc8 7. Lb7+ Kxb7 8. Lxf3+ Kc8 9. Lb7+ Kxb7 10. Lxg2+ Kc8 11. Lb7+ Kxb7 12. Dh1+ Kc8 13. Da8+ Sb8 14. Dxb8+ Kd7 15. Db5+ Kc8 16. Da6+ Kd7 17. Dc6+ Kc8 18. Lxd6+ Dc7 19. Dxc7#
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Reprint: http://www.jurajlorinc.com/chess/or27we2.htm#uloha3
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comment
Keywords: Non-standard material, Checking key, Flight giving sacrifice key, Perpetual check, Sacrifice of white pieces, Line opening, x pieces move to one square (6 on b7), Switchback (k), corner to corner (D)
Genre: n#
Computer test: Gustav 4.1d
FEN: B1krN1KQ/p1Bnq3/2pb4/3pPP2/BN2n3/5p2/B5p1/1B1B3B
Input: James Malcom, 2021-04-07
Last update: Arnold Beine, 2021-04-07 more...
16 - P1390603
Sergey Smotrov
18398 Die Schwalbe 306-1 12/2020
1. Lob
PR Dieter Werner
P1390603
(4+6)
s#20
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#
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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!
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comment
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...
17 - P1392166
Valery Surkov
2133 Gaudium 237 28/02/2021
P1392166
(5+6)
s#18
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#
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Henrik Juel: Popeye 4.61 with 'opt thr 0 non 0 1' (2021-07-27)
comment
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...
18 - P1393385
Sergey Smotrov
9310 Seven Chess Notes 184 05/2021
2. Preis
PR Anatoli Stepotschkin
P1393385
(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.
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Henrik Juel: Popeye 4.61 with 'opt non 1 1 thr 0' found no flaws
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...
19 - P1393409
Viktor Zheltukhov
9306 Seven Chess Notes 184 05/2021
P1393409
(4+3) C+
s#6
1. Th3+! Kg5,Kg4 2. Dg2+ Kf4 3. Df3+ Kg5 4. Df6+ Kg4 5. Sf2+ Dxf2 6. Df5+ Dxf5#
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Henrik Juel: C+ Popeye 4.61 (2021-09-01)
comment
Keywords: Aristocrat, Miniature, Checking key, Perpetual check, Model mate
Genre: s#
FEN: 8/q7/4K3/7k/8/bR6/2Q5/7N
Input: Rainer Staudte, 2021-09-01
Last update: Marcin Banaszek, 2021-09-04 more...
20 - P1393421
Viktor Zheltukhov
Valery Ivanov

9255 Seven Chess Notes 183 04/2021
P1393421
(4+3) C+
s#8
1. Sg5+! Kg8 2. Df7+ Kh8 3. Ld4+ Sxd4 4. Df6+ Kg8 5. Dg6+ Kh8,Kf8 6. Dh6+ Kg8 7. Dh7+ Kf8 8. Se6+ Sxe6#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-09-02)
comment
Keywords: Miniature, Aristocrat, Checking key, Perpetual check
Genre: s#
FEN: 3K1k2/5N2/1n3Q2/1n6/8/8/5B2/8
Input: Rainer Staudte, 2021-09-01
Last update: Marcin Banaszek, 2021-09-04 more...
21 - P1396555
Sergey Smotrov
The Ural's Problemist Website 11/2021
3. Preis
Aleksandr Azhusin 70 JT
Section logical s#
WCCI=7.5
P1396555
(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#
play all play one stop play next play all
1. Returns of white figures
2. Logic maneuver Bf8 => h4
Henrik Juel: Popeye 4.61 with 'opt thr 0 non 0 1' found no flaws (2022-09-02)
comment
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...
22 - P1399333
Sergey Smotrov
S492 Problemist Ukrainy 71 01-03/2022
5. ehrende Erwähnung
P1399333
(6+7)
s#19
1. Lb1+? d3 2. Dh4+ Kf3 3. Dg4+ Kf2 4. De2+ dxe2+ 5. Kc2!

1. Dg3-g4+! Ke4-d3 2. La2-b1+ Kd3-c4 3. Dg4-c8+ Kc4-b3 4. Dc8-c2+ Kb3-a3,Kb4 5. Dc2-c5+ Ka3-b3 6. Dc5-b5+ Kb3-a3 7. Db5-a5+ Ka3-b3 8. Lb1-c2+ Kb3-c4 9. Da5-a6+ Kc4-b4 10. Tg5-b5+ Kb4-c4 11. Lc2-b3+ Kc4-d3 12. Tb5-g5+ Kd3-e4 13. Da6-e2+ Ke4-f4 14. De2-e5+ Kf4-f3 15. De5-g3+ Kf3-e4 16. Lb3-c2+ d4-d3 17. Dg3-h4+ Ke4-f3 18. Dh4-g4+ Kf3-f2 19. Dg4-e2+ d3xe2#
play all play one stop play next play all
Judge Sergiy Borodavkin, 12/2022
Henrik Juel: Popeye 4.61 with 'opt non 3 2 thr 0' found no flaws (2022-02-22)
comment
Keywords: Checking key, Perpetual check, Pawn mate, Selfblock, Battery creation, Discovered check, Switchback (DT), Logical Problem
Genre: s#
FEN: 5nnr/8/1P5p/6R1/3pk3/6Q1/Bb1P4/3K4
Input: Marcin Banaszek, 2022-02-22
Last update: Marcin Banaszek, 2022-12-08 more...
23 - P1400084
Mykola Parkhomenko
3290 Mat-Pat 50 12/1996
Lob
Martin 1994-1995
P1400084
(5+9)
s#23
1. Dc3+! Ka2 2. Tb2+ Ka1 3. Txc2+ Kb1 4. Tb2+ Ka1 5. Txd2+ Kb1 6. Tb2+ Ka1 7. Tbxe2+ Kb1 8. Tb2+ Ka1 9. Txf2+ Kb1 10. Tb2+ Ka1 11. Txg2+ Kb1 12. Tb2+ Ka1 13. Txh2+ Kb1 14. Tb2+ Ka1 15. Tb8+ Ka2 16. Db3+ Ka1 17. Dd1+ Ka2 18. Db1+ Ka3 19. Db2+ Ka4 20. Db3+ Ka5 21. Db4+ Ka6 22. Te6+ Sxe6 23. Sc7+ Sxc7#
play all play one stop play next play all
Judge Vladislav Bunka 12/1996
Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' found no flaws (2022-03-28)
Anton Baumann: Mit der Einstellung 'der sK hat bis zu 2 Fluchtfelder' findet Gustav Duale:
16.Dd2+ Ka1! 17.Dc1,Dd1,De1+ Ka2 18.Db1+...
16.Dc4+ Ka1 17.Dc1+ Ka2 18.Db1+ 16. ...Ka3 17.Dxd3,Db4+ Ka2 18.Db1+ (2022-03-30)
comment
Keywords: Checking key, Perpetual check, Logical Problem, Switchback (DTk), Round Trip (D-4)
Genre: s#
FEN: KR6/4R3/8/3N2n1/8/1Q1p4/2pppppb/k7
Input: Marcin Banaszek, 2022-03-28
Last update: Gunter Jordan, 2022-03-29 more...
24 - P1401783
Claus Grupen
15 Schach in Schleswig-Holstein 03/2013
P1401783
(3+8)
#8
1. 0-0-0+! Kh2 2. Dg1+ Kh3 3. Td3+ Kh4 4. Td4+ Kh3 5. De3+ Kh2 6. Th4+ Kg2 7. Tg4+ Kf1 8. Tg1#
7. ... Kh1 8. Dg1#
7. ... Kh2 8. Dxh6#
play all play one stop play next play all
Matts auf dem gleichen Feld (g1).

Die sDa8, der sTh8, der sTa7 und der sBh7 sind entbehrlich. Es entsteht eine Miniatur ohne Umwandlungsfiguren.
Henrik Juel: C+ Popeye 4.61 (2022-06-12)
Henrik Juel: sBh7 cannot be removed, but sBh7 can, I think (2022-06-12)
comment
Keywords: Perpetual check, Corner mate, Non-standard material, Castling key, Switchback (k), Checking key, x pieces move to one square, Model mate (Gnaden-)
Genre: n#
FEN: q6r/rr4Qp/7p/8/8/8/q7/R3K2k
Input: Gunter Jordan, 2022-06-12
Last update: Gunter Jordan, 2022-06-12 more...
25 - P1404828
Wladimir A. Schmatow
12 Albino pljus 71 03/2017
P1404828
(3+2)
#6
1. Lc2+! Ka2 2. De6+ Kb2 3. De5+ Ka3,Ka2 4. Da5+ Kb2 5. Dc3+ Kc1 6. Dxa1#
5. ... Ka2 6. Db3#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-10-03)
comment
Keywords: Aristocrat, Minimal (d), Miniature, Checking key, Perpetual check
Genre: n#
FEN: 8/8/8/8/8/1B1KQ3/8/qk6
Input: Rainer Staudte, 2022-10-03
Last update: Gunter Jordan, 2022-10-03 more...
26 - P1404839
Sergey Smotrov
Moscow tourney 10/2022
4. Lob
P1404839
(4+4)
s#13
1. Tf5-f4+! Kd4-d3 2. Dg5-f5+ Kd3-e3 3. Tf4-e4+ Ke3-d3 4. Te4-h4+ Kd3-e3 5. Sf6-g4+ Ke3-d4 6. Sg4-f2+ Kd4-e3 7. Df5-g5+ Ke3-f3 8. Th4-f4+ Kf3-e3 9. Tf4-f5+ Ke3-d4 10. Dg5-g4+ Kd4-e3 11. Dg4-f3+ Ke3-d4 12. Df3-d5+ Kd4-e3 13. Dd5-d2+ c3xd2#
play all play one stop play next play all
Judge Igor Agapov
Henrik Juel: Popeye 4.61 with 'opt non 2 1 thr 0' found no flaws
1... Ke3? 2.Sd5+ gives selfmate in 10 (2022-10-03)
comment
Keywords: Checking key, Perpetual check
Genre: s#
FEN: 8/8/5N2/5RQ1/b2k4/2p5/6p1/4K3
Input: Marcin Banaszek, 2022-10-03
Last update: Gunter Jordan, 2022-10-03 more...
27 - P1407594
Sergey Smotrov
Z378 Probleemblad 2009
2. ehrende Erwähnung
PR Hans Gruber + Dirk Borst
P1407594
(4+8)
s#23
1. Te5+? dxe5 2. Dxg6+ Txg6+ 3. Kh7!
1. Df2+! Kg4 2. Te4+ Kh3 3. Sf4+ Kg4 4. Sxg6+ Kh3 5. Te3+ Kg4 6. Dg3+ Kf5 7. Se7+ Kf6 8. Dg5+ Kf7 9. Dg8+ Kf6 10. Sd5+ Kf5 11. Dc8+ Dd7 12. Dc2+ Kg4 13. Dg6+ Kh4 14. Df6+ Kg4 15. Df3+ Kh4 16. Df2+ Kg4 17. Te4+ Kh3 18. Sf4+ Kg4 19. Sh5+ Kh3 20. Te3+ Kg4 21. Dg3+ Kf5 22. Te5+! dxe5+ 23. Dg6+ Txg6#
play all play one stop play next play all
Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' foud no flaws (2023-02-02)
comment
Keywords: Queen sacrifice, Perpetual check, Cross check, Logical Problem, Switchback (DTSk), Round Trip (D-11 S-6), Checking key
Genre: s#
FEN: 8/8/r2p2pK/n4k1N/qp6/4R1Q1/3p4/8
Input: Gunter Jordan, 2023-02-02
Last update: Gunter Jordan, 2023-02-02 more...
28 - P1407716
Paul Raican
19038 Die Schwalbe 316, p. 621, 08/2022
P1407716
(7+5)
s#15
1. Da2+? Kxc1 2. Db1+ Kd2 3. Sd1+ Ke2 4. Td3 Kf1 5. Se3+ Kf2 6. Df1+ Kg3 7. Sc4+ Kh2 8. Td2+ Kg3 9. Dg2+ Kf4 10. Td4+ Kf5 11. Df2+ Kg5 12. Ld2+ Kxh5 13. Dxh4+ Kg6 14. Dh6+ Kf5 15. De6+ fxe6#?, aber 15. ... Lxe6+!

1. Se2+! Kxe2 2. Da6+ Lb5 3. Tc2+ Kd1 4. Da1+ Kxc2 5. Tc3+ Kd2 6. Tb3+ Kc2 7. Tb2+ Kd3 8. Td2+ Ke3 9. Dg1+ Kf4 10. Td4+ Kf5 11. Df2+ Kg5 12. Ld2+ Kxh5 13. Dxh4+ Kg6 14. Dh6+ Kf5 15. De6+ fxe6#
play all play one stop play next play all
Henrik Juel: Popeye 4.61 with 'thr 0 non 0 1' found no flaws (2023-02-10)
comment
Keywords: Discovered check, Battery creation, Pawn mate, Queen sacrifice, Perpetual check, Model mate, Sacrifice of white pieces, Switchback (k), Checking key, Selfblock
Genre: s#
FEN: 8/1n1b1p2/8/Q2K3B/1B5p/2N2R2/3k4/2R5
Input: Gunter Jordan, 2023-02-10
Last update: Felber, Volker, 2023-02-17 more...
29 - P1408779
Valery Surkov
ru_chess_art 09/04/2023
P1408779
(4+2)
s#3
1. Tb1+? Txb1+ 2. Dxb1+!

1. De3+? Kc2 2. De2+ Kc1 3. Tb1+ Txb1#
1. ... Kd1!

1. Df1+! Kc2 2. De2+ Kc1 3. Tb1+ Txb1#
1. ... Kd2 2. Td3+ Kc2 3. Db1+ Txb1#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-04-11)
comment
Keywords: Minimal (t), Miniature, Checking key, Perpetual check
Genre: s#
FEN: 8/8/8/1r6/8/1R1Q4/P7/K1k5
Input: Rainer Staudte, 2023-04-11
Last update: Gunter Jordan, 2023-04-11 more...
30 - P1408788
Valery Surkov
G45-16 feenschach 247 10-12/2021
P1408788
(5+2)
s#4
1. Lb6+! Dxb6 2. Df7+ Kc6 3. Dd5+ Kc7 4. b8=D+ Dxb8#
1. ... Kc6 2. Dd5+ Kxb6 3. b8=D+ Ka6 4. Da7+ Dxa7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-11)
comment
Keywords: Minimal (d), Miniature, Checking key, Promotion (D), Perpetual check, Corner mate
Genre: s#
FEN: K7/1Pk5/8/2B5/8/1Q1R4/8/6q1
Input: Rainer Staudte, 2023-04-11
Last update: Gunter Jordan, 2023-04-13 more...
31 - P1408793
Valery Surkov
G45-19 feenschach 247 10-12/2021
P1408793
(5+2)
s#4
2 Lösungen
1. Dd4+? Kc6 2. Tc5+ Kb6 3. Db4+ Ka6 4. Db7+ Lxb7#
1. ... Ka6!

1) 1. Dc4! Lh3,L~ c8=S+ Lxc8 3. Dc7+ Ka6 4. Db7+ Lxb7#

2) 1. La7+! Kxc7 2. Da5+ Kc6 3. Db5+ Kc7 4. Db7+ Lxb7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-12)
comment
Keywords: Minimal (l), Miniature, Perpetual check (in 2), under-promotion (S in 1), Antiphönix, Checking key
Genre: s#
FEN: KBb5/2P5/1k6/3R4/Q7/8/8/8
Input: Rainer Staudte, 2023-04-11
Last update: Gunter Jordan, 2023-04-13 more...
32 - P1408822
Valery Surkov
G45-48 feenschach 247 10-12/2021
P1408822
(5+2)
s#7
2 Lösungen
1) 1. Dd4+! Kc6 2. Tc5+ Kb6 3. Db4+ Lb5 4. Lc7+ Ka6 5. b8=L! droht 6. Tc6+ Lxc6+ 7. Db7+ Lxb7#
5. ... Lf1,L~ 6. Db5+ Lxb5 7. Tc6+ Lxc6#

2) 1. Dd8+! Kc6 2. De8+ Kb6 3. Lc7+ Kxc7 4. b8=L+ Kb6 5. Dd8+ Kc6 6. Dd5+ Kb6 7. Db7+ Lxb7#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-04-13)
comment
Keywords: under-promotion (L,L), Minimal (l), Miniature, Checking key, Perpetual check (in 2), Corner mate, Model mate (Gnaden-)
Genre: s#
FEN: KB6/1P1Q4/bk6/4R3/8/8/8/8
Input: Rainer Staudte, 2023-04-13
Last update: Gunter Jordan, 2023-04-13 more...
33 - P1408824
Valery Surkov
G45-52 feenschach 247 10-12/2021
P1408824
(4+2)
s#8
b) sDh1->a1
a) 1. Ta7+! Kb6 2. Dd8+ Kc6 3. Tc7+ Kb6 4. Tc1+ Ka6 5. Dc8+ Kb6 6. Tb1+ Dxb1 7. Db8+ Ka6,Kc6 8. Db7+ Dxb7#

b) 1. Df7+! Kc8 2. Df5+ Kc7 3. Td7+ Kc8 4. Td4+ Kc7 5. Dc2+ Dc3 6. Dh7+ Kc8 7. Tc6+ Dxc6+ 8. Db7+ Dxb7#
play all play one stop play next play all
SCHRECKE: b) sDh1 nach a1
a)+b): C+, Gustav 4.2c, Brute Force (2023-04-13)
comment
Keywords: Echo, Aristocrat, Minimal (d), Miniature, Checking key, Corner mate, Model mate (Gnaden-), Perpetual check, Twin
Genre: s#
FEN: K3Q3/2k5/R7/3R4/8/8/8/7q
Input: Rainer Staudte, 2023-04-13
Last update: Gunter Jordan, 2023-04-13 more...
34 - P1412776
Sergiy Karnatsky
C437 Problemist Ukrainy 77 07-09/2023
1. ehrende Erwähnung
P1412776
(8+6) C+
#13
1. Ta6-a1+! Kb1-c2 2. Ta1-c1+ Kc2-d3 3. Tc1-c3+ Kd3-e4 4. Tc3-e3+ Ke4-f5 5. Te3-e5+ Kf5-g6 6. Te5-g5+ Kg6-h7 7. Tg5-h5+ Kh7-g6 8. Th5-h6+ Kg6-f5 9. Th6-f6+ Kf5-e4 10. Tf6-f4+ Ke4-d3 11. Tf4-d4+ Kd3-c2 12. Td4-d2+ Kc2-b1 13. Td2-b2#
play all play one stop play next play all
Judge Yuri Gordian 10/2023
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-10-06)
comment
Keywords: Schlüssel = Eckzug, Checking key, Perpetual check, Switchback (k), Rook's Staircase
Genre: n#
Computer test: Gustav 4.1c
FEN: 6rB/1n3N2/R3P3/3b4/1K4p1/1N4P1/4pP2/1k6
Input: Marcin Banaszek, 2023-10-06
Last update: Gunter Jordan, 2023-10-06 more...
35 - P1414541
Daniel Novomesky
4968 Sachmatija 03/22 07-09/2022
P1414541
(3+3)
s#17
1. Ta6+! Kb8 2. Da7+ Kc8 3. Tc6+ Kd8 4. Dc7+ Ke8 5. Te6+ Kf8 6. De7+ Kg8 7. Tg6+ Kh8 8. Df8+ Kh7 9. Tg7+ Kh6 10. Df6+ Kh5 11. Th7+ Kg4 12. Th4+ Kg3 13. Dg5+ Kf3 14. Dg4+ Ke3 15. Df4+ Kd3 16. Dc4+ Ke3 17. Dc3+ Sxc3#
play all play one stop play next play all
Henrik Juel: Popeye 4.61 with 'opt non 0 1 thr 0' found no flaws (2024-01-17)
comment
Keywords: discovered checkmate, Aristocrat, Batteriematt horizontal, Queen sacrifice, Perpetual check, corner to corner (k), Königswanderung, Miniature, Switchback (k), Checking key
Genre: s#
FEN: k7/7Q/7R/8/8/8/8/1r1nK3
Input: Gunter Jordan, 2024-01-17
Last update: Gunter Jordan, 2024-01-17 more...
36 - P1415051
Aleksandr Pankratiev
4181 Variantim 90 08/2023
P1415051
(4+2)
s#9
1. Db3+! Ka5 2. Db4+ Ka6 3. Dc4+ Ka5 4. Tb5+ Ka6 5. Tbc5+ Kb6 6. De6+ Dd6
7. Db3+ Ka6 8. T7c6+ Dxc6 9. Db7+ Dxb7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2f, Brute Force (2024-02-14)
comment
Keywords: Discovered check, Aristocrat, Battery creation, Queen sacrifice, Perpetual check, Corner mate, Miniature, Minimal (d), Switchback (Dk), Checking key, Rook sacrifice
Genre: s#
FEN: K5Q1/1RR5/8/8/k7/8/7q/8
Input: Gunter Jordan, 2024-02-14
Last update: Gunter Jordan, 2024-02-14 more...
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