Die Schwalbe

52 problem(s) found in 3719 milliseconds (displaying 52 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Aristokrat']

1 - P0577233
Uwe Mehlhorn
Torsten Linss

1205 Rochade Europa 04/1995
1. Lob
Informalturnier 1994-1995
P0577233
(2+2)
h#10*
0.1...
Doppellängstzüger
* 1. ... ... 2. Sf6+ Kc4 3. Se8 Sd5 4. Sc7 Sc3 5. Ka3 Sb1+ 6. Kb2 Sc3 7. Sb5 Sd1+ 8. Ka1 Se3 9. Sa3+ Kb3 10. Sb1 Sc2#

1. ... Sc8 2. Se3 Ke4 3. Sd1+ Sb6+ 4. Kb3 Sd7 5. Sc3+ Kd3 6. Sa2+ Sc5+ 7. Kb2 Sa4+ 8. Ka1 Sc5 9. Sc1+ Kc2 10. Sa2 Sb3#
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Preisbericht 09/1996
PR Hans Peter Rehm
SCHRECKE: C+, popeye 4.85 (2020-10-08)
comment
Keywords: Maximummer (Doppel-), Aristocrat
Genre: Fairies
FEN: 8/4N3/8/3K4/k5n1/8/8/8
Input: Felber, Volker, 2000-01-06
Last update: Marcin Banaszek, 2020-10-07 more...
2 - P1016492
Wilfried Seehofer
2713 Schach-Aktiv 11/2002
P1016492
(5+2)
s#10*
* 1. ... Txf1#
1. Sd5 Kg4! 2. Se3+ Kf3 3. Sc4 Kg4! 4. Dh5+ Kf4! 5. Th4+ Kg3 6. Th3+ Kf4 7. De5+ Kg4 8. Tg1+ Tg2! 9. Se3+ Kxh3 10. Dh2+ Txh2#
Vorgänger siehe P1015112.
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Anton Baumann: C+ Gustav 4.1d (2020-12-03)
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comment
Keywords: Aristocrat, anticipated
Genre: s#
FEN: 8/8/5N2/4Q3/8/5k2/5r1R/5R1K
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Frank Müller, 2009-11-08 more...
3 - P1107855
Stephan Dietrich
2827 Orbit 01/2010
P1107855
(6+2) C+
s#11
1. Lg2 Kf5 2. Lh3+ Ke5 3. Lf1 Kf5 4. Tf3+ Ke5 5. Sc5 Kd4 6. Sb3+ Ke5 7. Kf8 Ke6 8. Lh3+ Ke5 9. Tf5+ Ke6 10. Tg5+ Kxf6 11. Ld8+ Txd8#
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comment
Keywords: Aristocrat
Genre: s#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-09-23)
FEN: 8/2B2K2/3rNN2/4k3/8/3R1B2/8/8
Input: Frank Müller, 2010-06-17
Last update: Erich Bartel, 2020-09-23 more...
4 - P1119196
Michel Meynsbrughen

P1119196
(4+1)
#2
1. Tg2+! Kc1 2. Dc2#
1. ... Ke1,Kd1 2. Db1#
1. ... Ke3 2. De4#
1. ... Kc3 2. Dd3#
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SCHRECKE: vergleiche: P1166359, P1143563 (2020-11-24)
Henrik Juel: C+ Popeye 4.61 (2020-11-24)
comment
Keywords: Miniature Collection (0003415), Checking key, Aristocrat
Genre: 2#
FEN: 8/8/6Q1/K1N5/8/6R1/3k4/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2020-11-24 more...
5 - P1139269
Edvin Alexander Ekholm
7217 Tidskrift för Schack 01/1930
P1139269
(4+2)
#3
1. Te6? Sh4 2. Tf6+ Sf3!

1. Lh1! Kf2 2. Te2+ Kf1 3. Lg2#
1. ... Sh4 2. Tf8+ Sf3+ 3. Txf3#
2. ... Sf5 3. Txf5#
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G1b m
Henrik Juel: Ruined by duals after 1... Se5,Sh8,Se7 (2020-10-13)
comment
Keywords: Miniature Collection (0049289), Critical move, Aristocrat
Genre: 3#
FEN: 4R3/8/6n1/8/4B3/8/3K3B/5k2
Input: Felber, Volker, 2010-09-11
Last update: Alfred Pfeiffer, 2020-10-14 more...
6 - P1146227
Gerd Rinder
1514 Die Schwalbe 25, p. 412, 01/1964
P1146227
(5+1)
#2
b) Vertikaler Zylinder
a) 1. Lf6! Kxc1 2. Ke2#

b) 1. 0-0! Kxa1 2. Kg2#
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E2-c1 FW
Henrik Juel: Part a) is C+ Popeye 4.61 (2020-10-20)
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comment
Keywords: Miniature Collection (0310856), Cylinder (Vertikaler), Aristocrat
Genre: 2#
FEN: 8/8/8/6B1/8/8/8/NkN1K2R
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2020-10-20 more...
7 - P1154086
Jean Morice
24 heures (Lausanne) 1977
P1154086
(5+2)
#3
1. Le1
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D14b
SCHRECKE: C+, popeye 4.85
1.Le1! T:e1! 2.T:e1 Ka5 3.Ta1# (2020-10-13)
comment
Keywords: Miniature Collection (0054299), Aristocrat
Genre: 3#
FEN: B3K3/1R6/k7/B3R3/8/8/8/r7
Input: Felber, Volker, 2010-09-12
Last update: Erich Bartel, 2020-10-14 more...
8 - P1170290
Otto B. Wurzburg
Westen und Daheim 10/09/1911
P1170290
(4+3)
#3
1. Sb3 Sa2 2. Db2+ Sxb2 3. Sa3#
1. ... Kc2 2. Sd4+
1. ... Sd3 2. Da1+ Kc2 3. Sd4#
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E4cS 3m
vf: Richard Cheney, 09.1959, Die Schwalbe
Henrik Juel: Damaged by the duals 1... Sd5 2.Sa1,Sd4, 1... Sc6 2.Se3,Sa1, and 1... Sa6 2.Se3,Sa1,Sd4 (2020-11-02)
comment
Keywords: Miniature Collection (0061573), Aristocrat
Genre: 3#
FEN: 8/8/8/8/nnN5/Q7/8/1kN4K
Input: Felber, Volker, 2010-09-12
Last update: Erich Bartel, 2020-11-03 more...
9 - P1171999
Karl Fabel
1382 Hamburger Fremdenblatt 25/11/1934
P1171999
(4+3)
#3
1. Kg3! (Zugzwang)
1. ... Te2 2. Lxf3+ Tg2 3. Lxg2#
1. ... Te4 2. Txe4 Sg1,S~ 3. Te1#
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A26T
SCHRECKE: C+, popeye 4.85 (2020-12-01)
comment
Keywords: Miniature Collection (0333908), Fabel-Opus (97), Aristocrat
Genre: 3#
FEN: B7/8/4R3/8/8/4rn1K/7B/7k
Input: Zuncke/Bruder, 2010-09-12
Last update: Mario Richter, 2020-11-30 more...
10 - P1190380
Viktor Syzonenko
6246 Phénix 12/2010
Lob
Sektion s#11-n
P1190380
(6+2) C+
s#11*
* 1. ... Kxe6 2. Dd7+ Ke5 3. Kh4 Ke4 4. Dd3+ Ke5 5. Lc6 Ke6 6. Dd7+ Ke5 7. Sg5 Kf4 8. Dd4+ Kf5 9. Le4+ Kf4 10. Se6+ Txe6 11. Lh6+ Txh6#
1. Kg4! Kxe6 2. Dd7+ Ke5 3. Kh4 Ke4 4. Dd3+ Ke5 5. Lc6 Ke6 6. Dd7+ Ke5 7. Sg5 Kf4 8. Dd4+ Kf5 9. Le4+ Kf4 10. Se6+ Txe6 11. Lh6+ Txh6#
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PR Yves Tallec 03/2015
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-04)
comment
Keywords: Aristocrat, Wartezug
Genre: s#
FEN: 8/6B1/4Nr2/1B2k3/8/3Q2KN/8/8
Input: Frank Müller, 2011-03-19
Last update: Marcin Banaszek, 2020-11-07 more...
11 - P1271907
Torsten Linss
F50 ASymmetrie 2013
P1271907
(5+2) C+
s#10
1. Lb3+ Kc6 2. Dd5+ Kb6 3. Le3+ Ka6 4. Dc6+ Ka5 5. Dc5+ Ka6 6. Lc4+ Kb7 7. Da7+ Kc6 8. Td6+ Kxd6 9. De7+ Kc6+ 10. Dd7+ Dxd7#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-12)
comment
Keywords: Aristocrat, Asymmetrical solution, Oneliner, Symmetrical position
Genre: s#
FEN: 3K4/8/3k4/3B4/3Q4/3R4/3B4/3q4
Input: Frank Müller, 2013-06-05
Last update: Marcin Banaszek, 2020-10-12 more...
12 - P1278196
Alexander Hildebrand
v Springaren 12/1994
Sommerturnier 1994
6. ehrende Erwähnung
P1278196
(8+3) C+
s#7
1. Kh7+! Kf7 2. Th6+ Sxd5 3. Dg6+ Kxe7 4. Sxd5+ Kd7 5. Sc5+ Dxc5 6. Dg7+ De7 7. Df7 Dxf7#
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Korrektur Springaren 09/1995
Anton Baumann: C+ Gustav 4.1d (2020-11-24)
comment
Keywords: Aristocrat, Epaulettenmatt
Genre: s#
FEN: 4k1KR/qN2B3/1N2R3/3B4/4Q3/2n5/8/8
Input: Frank Müller, 2013-09-24
Last update: Marcin Banaszek, 2020-11-24 more...
13 - P1292371
Yuri Paramonov
F25 Shakhmatnaya Kompozitsiya 120 11-12/2014
P1292371
(4+2) C+
s#11
1. De6+ Kc7 2. Dc4+ Kb6 3. Tb3+ Ka5 4. Dd5+ Ka4,Ka6 5. Sc5+ Ka5 6. Se6+ Ka4,Ka6 7. Dc4+ Ka5 8. Tb5+ Ka6 9. Tb8+ Ka5 10. Db4+ Ka6 11. Sc7+ Sxc7#
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comment
Keywords: Aristocrat
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K1k1n1Q1/8/8/8/4N3/3R4/8/8
Input: Frank Müller, 2014-12-12
Last update: James Malcom, 2020-10-02 more...
14 - P1297684
Arnold Beine
WCCC Wageningen 08/2006
Lob
Wodka-Turnier
P1297684
(6+2) C+
s#8
1. Ld5! Kd8 2. Df8+ Te8 3. Lc4+ Kc8 4. Df5+ Te6 5. Dc5+ Tc6 6. Tc7+ Txc7 7. Dc6+ Txc6 8. La6+ Txa6#
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more ...
comment
Keywords: Aristocrat, Stalemate dissolution
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: K1k5/R7/4r3/5Q2/3RB3/8/7B/8
Input: Frank Müller, 2015-02-15
Last update: Alfred Pfeiffer, 2020-10-15 more...
15 - P1308947
Viktor S. Zheglov
Yuri Paramonov

F12 Shakhmatnaya Kompozitsiya (125) 09-10/2015
P1308947
(4+2) C+
s#8
1. Dh2+ Ke6 2. Dh6+ Kf7 3. Tf5+ Kg8 4. Tg5+ Kf7 5. Dg7+ Ke6 6. Te5+ Kd6 7. Sc4+ Kc6+ 8. Dd7+ Dxd7#
1. ... Kc6 2. Dh6+ Kb7 3. Da6+ Kb8 4. Dd6+ Kb7 5. Db4+ Kc6 6. Db5+ Kd6 7. Se4+ Ke6+ 8. Dd7+ Dxd7#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-23)
comment
Keywords: Aristocrat
Genre: s#
FEN: 3K4/8/3k4/R7/8/8/3N2Q1/3q4
Input: Frank Müller, 2015-09-03
Last update: Marcin Banaszek, 2020-11-24 more...
16 - P1314938
Viktor S. Zheglov
Yuri Paramonov


Juri Kalugin MT 2015
3. Preis
P1314938
(4+2) C+
s#9
b) wKb6 nach d7
a) 1. Dc7+ Ka6 2. Tc6+ Kb5 3. Tb6+ Ka5 4. Tb8+ Ka6 5. Ld3+ Db5 6. Lc4 Dxc4 7. Db7+ Ka5 8. Db6+ Ka4 9. Da6+ Dxa6#
b) 1. Td5+ Kc6,Kc8 2. De6+ Kc7 3. Td7+ Kc8 4. Ta7+ Kd8 5. De7+ Kc8 6. Lf5+ Dxf5 7. Db7+ Kd8 8. Dc7+ Ke8 9. Dc8+ Dxc8#
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Henrik Juel: Part b tested correct by Popeye 4.61 with opt dro 0, so it might be C+ (2016-01-04)
SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force (2020-10-19)
comment
Keywords: Aristocrat, Changed mates
Genre: s#
FEN: K7/8/1k6/2R1Q2q/8/8/2B5/8
Input: Frank Müller, 2016-01-04
Last update: Marcin Banaszek, 2020-10-19 more...
17 - P1337141
Mykola Parkhomenko
S302 Problemist of Ukraine (51) 01-03/2017
P1337141
(5+3) C+
s#7
1. Te5+ Kf7 2. Sg5+ Txg5 3. Tf6+ Kxf6 4. Dd6+ Kf7 5. De6+ Kf8 6. Df6+ Sf7 7. Dg7+ Txg7#
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more ...
comment
Keywords: Aristocrat
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 5k1n/4R2K/6R1/5r2/1Q2N3/8/8/8
Input: Frank Müller, 2017-08-06
Last update: Alfred Pfeiffer, 2020-09-26 more...
18 - P1338584
Viktor S. Zheglov
Yuri Paramonov

7088 Seven Chess Notes (140) 09/2017
P1338584
(4+2) C+
s#8
1. De5+ Kd7 2. Td5+ Kc6,Kc8 3. De6+ Kc7 4. Lf4+ Dxf4 5. Td7+ Kc8 6. Tb7+ Kd8 7. De7+ Kc8 8. Tb8+ Dxb8#
1. ... Kc6 2. Dd5+ Kc7 3. Ta7+ Kc8 4. Dc6+ Kd8 5. Lg5+ Df6 6. Dc7+ Ke8 7. Dc8+ Dd8 8. Lh6 Dxc8#
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Henrik Juel: Popeye 4.61 w. opt nichtt 2 2 found no flaws (2017-09-02)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-10-16)
comment
Keywords: Aristocrat
Genre: s#
FEN: K7/8/3k4/R5Q1/8/4B3/8/5q2
Input: Frank Müller, 2017-09-02
Last update: Marcin Banaszek, 2020-10-19 more...
19 - P1346890
Viktor S. Zheglov
7368 Seven Chess Notes 145 02/2018
P1346890
(5+2) C+
s#12
1. Le2+ Kb6 2. Ke8 Kc6 3. Lb5+ Kb6 4. Ld3 Kc6 5. Tc7+ Kb6 6. De7 Ka5 7. Ta7+ Kb6 8. Kf8 Kc6 9. Dc7+ Kd5 10. Ta5+ Ke6 11. Lf5+ Kf6 12. Dd8+ Txd8#
1. ... Td3 2. Dc7 Kb5 3. Td4 Ka6 4. Kc8 Kb5 5. Te4 Ka6 6. Da7+ Kb5 7. Da2 Kc6 8. Dc4+ Kd6 9. Lc5+ Kc6 10. Te6+ Td6 11. Lh5 Txe6 12. Le8+ Txe8#
1. ... Tc4 2. Ld2 Kb6 3. Da5+ Kc6 4. Lf3+ Te4 5. Te7 Kd6 6. Db6+ Kd5 7. Db4 Kc6 8. Lc3 Kd5 9. Te5+ Kc6 10. Db5+ Kd6 11. Lb4+ Txb4 12. Db8+ Txb8#
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SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-25)
comment
Keywords: Aristocrat
Genre: s#
FEN: 3K4/3R4/k7/4Q2B/3r4/4B3/8/8
Input: Frank Müller, 2018-02-17
Last update: Marcin Banaszek, 2020-11-30 more...
20 - P1349700
Valery Surkov
G38/48 feenschach 227 11-12/2017
P1349700
(5+2) C+
s#7*
* 1. ... Ke6 2. Le4+ Tc6 3. Dc8+ Txc8#
1. Th5! Ke6 2. Lb7+ Tc6 3. De2+ Kf6 4. De7+ Kg6 5. Dh7+ Kf6 6. Tf5+ Ke6 7. Lc8+ Txc8#
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SCHRECKE: C+, Gustav 4.1d, Brute Force
1.Th5! Ke6 2.Lb7+ Tc6 3.De2+ Kf6 4.De7+ Kg6 5.Dh7+ Kf6 6.Tf5+ Ke6 7.Lc8+ T:c8# (2020-11-26)
comment
Keywords: Aristocrat
Genre: s#
FEN: 1B2K3/2r5/Q1Bk4/5R2/8/8/8/8
Input: Frank Müller, 2018-04-08
Last update: Marcin Banaszek, 2020-11-30 more...
21 - P1349789
Yuri Paramonov
5757 Zadachi i etyudy 73 25/12/2017
P1349789
(4+2) C+
s#8
1. Td5+ Ke6 2. Dd7+ Kf6 3. Sg4+ Kg6 4. De6+ Kg7,Kh7 5. Td7+ Kh8 6. Df6+ Kg8 7. Sh6+ Dxh6 8. Df8+ Dxf8#
1. ... Kc7 2. Td7+ Kc8 3. Da6+ Kb8 4. Tb7+ Kc8 5. Tb5+ Kc7 6. Db7+ Kd6 7. Se4+ Ke6 8. Dc8+ Dxc8#
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Henrik Juel: Popeye 4.61 with 'opt dro 0' found no flaws (2018-05-08)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-11-29)
comment
Keywords: Aristocrat
Genre: s#
FEN: 4K3/8/3k4/1Q5R/8/8/5N2/2q5
Input: Rainer Staudte, 2018-05-08
Last update: Marcin Banaszek, 2020-11-30 more...
22 - P1368554
Andrew Buchanan
OzProblems.com 16/10/2019
P1368554
(4+3) C+
Gewinn
1. Sd3! Kf8 2. Se3 Sg6+ 3. Kd4 Td8+ 4. Kc3 Tc8+ 5. Sc4 Kg7 6. Sf2 Sh8 7. Tf1 Sf7 8. Se4 Td8 9. Sf6 Sg5 10. Se3 Ta8 11. Kb4 Tb8+ 12. Kc4 Tc8+ 13. Kb5 Tb8+ 14. Kc6 Ta8 15. Sfd5 Ta3 16. Kb5 Se4 17. Te1 Sg5 18. Kb4 Ta2 19. Tf1 Kg6 20. Tf6+ Kh5 21. Kb3 Ta7 22. Sf4+ Kh4 23. Se2 Tb7+ 24. Kc4 Sf7 25. Tf1 Kg5 26. Sd4 Se5+ 27. Kd5 Sd3 28. Se6+ Kg6 29. Sf8+ Kg5 30. Ke4 Sc5+ 31. Kd4 Sd7 32. Se6+ Kg6 33. Sd5 Ta7 34. Se7+ Kh5 35. Tg1 Ta4+ 36. Ke3 Tg4 37. Ta1 Sb6 38. Kf2 Sd7 39. Ta8 Tc4 40. Tg8 Tc2+ 41. Ke3 Tc3+ 42. Kf4 Tc4+ 43. Kf5 Kh4 44. Sf4 Tc5+ 45. Sed5 Txd5+ 46. Sxd5 Kh3 47. Tc8 Kg3 48. Ke6 Sb6 49. Sxb6 Kf2 50. Sc4 Ke1 51. Td8 Ke2 52. Td2+ Ke1 53. Kd5 Kf1 54. Ke4 Kg1 55. Kf3 Kh1 56. Kg3 Kg1 57. Td1#
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According to the Syzygy tablebase, *any* move wins for White except the silly 1. Sa2??
However, the tablebase does not know about castling!
The quickest winning move 1. Sd3!? would be defeated by 1. ... 0-0-0!? which attacks Sd3 and threatens the skewer Re8+. After this, White can only draw - or even loses after 2. Sc1??
But by a simple retro argument, Black cannot castle.
Since this retro point is essential to the solution, we have a retro problem, and hence the 50 move rule, which by Codex default is disengaged, is switched on.
When working with the 50 move rule, the key concept is not the number of moves to mate, but the number of moves to the first capture, pawn move or checkmate, known as DTZ.
All the alternatives to 1. Sd3 take more than 50 moves to force the first capture. The closest are 1. Sc3 & Se3 which according to Syzygy require exactly 50.5 moves, so seem *just* too slow. (For positions close to the cut-off, one has to be careful about *rounding*, see https://syzygy-tables.info/metrics. The number of half-moves for DTZ can be n or n+1. In fact here, after 1. Sc3/Sf3, the zeroing move is at its earliest White's 52nd move, not 51st.)
By the retro property therefore *only* 1. Sd3!, which requires 45 moves to force the first capture, can win. So this removes all the cooks for the first White move.

Lomonosov DTM #59: 1. Nd3!! Kf8!! 2. Ne3! Ng6+! 3. Kd5 Rd8+ 4. Kc4 Rc8+ 5. Kb5 Rb8+ 6. Ka6 Kf7 7. Nc5 Ne5 8. Nd5 Re8 9. Kb7 Nc4 10. Rf1+ Kg7 11. Kc6 Re5 12. Nd3 Re6+ 13. Kc5 Ne5 14. N3f4 Nd7+ 15. Kb5 Rd6 16. Nc7 Kf7 17. Nfd5+ Kg6 18. Ne7+ Kg5 19. Ncd5 Kg4 20. Rf4+ Kg5 21. Rf2 Kg4 22. Ne3+ Kg5 23. N7d5 Kg6 24. Rf1 Nf6 25. Nf4+ Kf7 26. Nc4 Rd8 27. Ne5+ Kg8 28. Rg1+ Kh7 29. Kc6 Rc8+ 30. Kd6 Re8 31. Re1 Ra8 32. Rh1+ Kg8 33. Ke7 Ra4 34. Rg1+ Kh7 35. Ne6 Nd5+ 36. Kd6 Nf4 37. Nc5 Rd4+ 38. Ke7 Rd2 39. Rg4 Rf2 40. Ncd7 Nd5+ 41. Ke6 Nf4+ 42. Kd6 Rd2+ 43. Ke7 Nd5+ 44. Kf8 Kh6 45. Rh4+ Kg5 46. Nf3+ Kf5 47. Nxd2 (zeroing 50M) Nc7 48. Re4 Ne6+ 49. Ke7 Nf4 50. Nf6 Ng6+ 51. Kf7 Ne5+ 52. Kg7 Kg5 53. Nf1 Kf5 54. Ne3+ Ke6 55. Nc4 Ke7 56. Rxe5+ Kd8 57. Rc5 Ke7 58. Rd5 Ke6 59. Re5# 1-0.
http://www.ozproblems.com/walkabout/walkabout2019#WA1610
https://www.chess.com/blog/Rocky64/a-heraldic-endgame-tablebase-composition

The school shield which inspired the problem:
http://www.calvert-trust.org.uk/images/colour.jpg
Henrik Juel: With White to move, last move was made with Ta8 or Ke8, so Black may not castle
An endgame connaisseur may supply the solution... (2019-10-25)
James Malcom: It is now supplied, Henrik. :) I worked through the Sygyzy tablebase, move by move, to get the computer recommended line. (2020-10-09)
A.Buchanan: Thanks James for this hard work to record a solution. Alas there is not just a single recommended line - White has a choice as early as W3. I wonder too if there is a DTM line which is faster than #57, and still clears the DTZ hurdle although maybe not as quickly as B45 as here. There is no DTM engines for 7 pieces yet.
What is certain is that the key works, and is unique. The exactly details of the best mating line remain to be revealed by improving technology. (2020-10-09)
A.Buchanan: For example, 2. Nc5 has DTZ 90, compared to the "superior" 2. Ne3 DTZ 88. However, if you keep picking the top move all the way through, then the final DTZ is in fact checkmate! I haven't all the Black choices though, but there aren't that many of them (2020-10-09)
A.Buchanan: The Lomonosov tablebase is DTM, and is available for free on Android. Today I found a PC app called Blue Stacks which emulates Android. According to Lomonosov, the position is #59, compared to Syzygy's DTZ offering #57 via zero at B45. When I run through the L. indicative solution (very quick to download and grab all of it), it is close to S.'s choices and all the mainline positions are safe from 50M. The zero is at W47, and the final mate is attractive in the middle of the board.
The real questions are:
(1) Is the #59 sound from 50M perspective? Or can Black force White to delay a few moves in order to avoid 50M trouble somewhere?
(2) How dualized is the solution? How does 50M play into pruning that?
What is clear is that both tablebases agree the solution begins 1. Nd3!! Kf8!! 2. Ne3! Ng6! (2020-10-10)
comment
Keywords: Cant Castler, Aristocrat, 50 move rule, Miniature
Genre: Retro, Studies
Computer test: www.syzygy.com
FEN: r3k2n/8/8/4K3/8/8/8/2NNR3
Reprints: www.chess.com 17/10/2019
Input: A.Buchanan, 2019-10-25
Last update: A.Buchanan, 2020-10-10 more...
23 - P1373302
Hartmut Brozus
19173 Schach , p. 79, 03/2020
P1373302
(4+2) cooked
s#7
2 Lösungen
1. Dd2+ Kb1 2. Dd3+ Kb2 3. Tb4+ Kc1 4. Tc4+ Kb2 5. Tc2+ Kb1 6. Tf2+ Kc1 7. Dd1+ Dxd1#
1. Ta2+ Kb3 2. Da4+ Kc3 3. Tc4+ Kd3 4. Td2+ Ke3 5. Td3+ Kxd3 6. Dc2+ Ke3 7. De2+ Dxe2#
play all play one stop play next play all
Cook: 1. Da4+ Kb1 2. Tb4+ Kc1 3. Da3+ Kc2 4. Tb2+ Kc1 5. Tf2+ Kb1 6. Db3+,Dd3+ Kc1 7. Dd1+ Dxd1#
1. ... Kc1 2. Da3+ Kb1 3. Tb4+ Kc2 4. Tb2+
2. ... Kc2 3. Tc4+ Kb1 4. Dd3+ Kb2 5. Tc2+ Kb1 6. Tf2+ Kc1 7. Dd1+ Dxd1#
1. ... Kb2 2. Da3+ 2. Tb4+
1. ... Kc3 2. Da3+ Kc2 2. Tc4+ Kb2 3. Da3+ Kb1 4. Dd3+ Kb2 5. Tc2+ Kb1 6. Tf2+ Kc1 7. Dd1+ Dxd1#
1. ... Kd3 2. Da3+ Kc2
Felber, Volker: Verbesserung unter P1376435 (2020-09-27)
comment
Keywords: Aristocrat
Genre: s#
FEN: R7/8/8/7q/3Q1R2/8/2k5/4K3
Input: Rainer Staudte, 2020-03-10
Last update: Felber, Volker, 2020-09-27 more...
24 - P1380152
Edvard af Hällström
33 Allas Krönika 15/08/1925
P1380152
(3+1) C+
#4
1. Dc6! Kd4 2. Ke2 Ke5 3. Ke3 Kf5 4. De4#
1. ... Kf4 2. Dd5 Kg4 3. Dg5+ Kh3 4. Dg3#,Dh5#
1. ... Kf5 2. Kf3 Ke5 3. Ke3 Kf5 4. De4#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61, except for the mate dual after 1... Kf4 (2020-09-22)
comment
Keywords: Aristocrat
Genre: n#
Computer test: Popeye 4.61
FEN: 8/3Q3N/8/4k3/8/8/5K2/8
Input: Rainer Staudte, 2020-09-22
Last update: Alfred Pfeiffer, 2020-09-22 more...
25 - P1380260
Salomon Großmann
21 Wiener Morgenzeitung 22/09/1924
P1380260
(5+2) C+
#2
1. Le7! (Zugzwang)
1. ... Kxe7 2. Sc4#
1. ... Kd5 2. Dc4#
1. ... Sf7 2. Dxf7#
1. ... Sg6 2. Df7#
play all play one stop play next play all
in der 'WMZ' nicht explizit als Urdruck deklariert
more ...
comment
Keywords: Aristocrat, Flight giving and taking key
Genre: 2#
Computer test: Popeye 4.61
FEN: 2K4n/8/4kB2/4N3/4R3/8/8/5Q2
Input: Mario Richter, 2020-09-25
Last update: Alfred Pfeiffer, 2020-09-25 more...
26 - P1380495
Torsten Linss
2071 Gaudium 231 30/09/2020
P1380495
(2+6) C+
h#7.5
3.1.1...
[The solution will not be displayed before its publication in the original source.]

Genre: h#
Computer test: Popeye 4.61
FEN: 1b3r2/8/4q3/6K1/2k5/2r1n3/8/4B3
Input: TLi, 2020-10-01
Last update: Gunter Jordan, 2020-10-01
27 - P1380522
Vaclav Kotesovec
FB1893 StrateGems 90 2020
P1380522
(5+1) C+
h#9
Alphabetschach
3.1.1...
wDU=Grashüpfer
1) 1. Kb5 Gc6 2. Kc4 Gc3 3. Kd5 Gf3 4. Ke6 Gf4 5. Kf6 Ge4 6. Kg5 Ke2 7. Kh4 Kf2 8. Kh3 Gg2 9. Kh2 Gg3#
2) 1. Kb4 Gc4 2. Kb3 Gc8 3. Kc2 Gf4 4. Kd1 Ge4 5. Ke1 Kf3 6. Kf1 Ge6 7. Kg1 Gf5 8. Kh2 Gg3+ 9. Kh3 Gg4#
3) 1. Kb6 Ga5 2. Kc6 Gd7 3. Kd5 Gd4 4. Ke6 Gf5 5. Kf7 Gf6+ 6. Kg6 Ge4+ 7. Kh6 Kf4 8. Kh5 Gg4 9. Kh4 Gg5#
play all play one stop play next play all
Triple exact echoes with shift [0,1].

Solver's comment: "Fantastic ABC problem with three mates." (Wilfried Seehofer)
more ...
comment
Keywords: Chameleonecho, Aristocrat, Rex solus (s), Alphabetic Chess, just one species, Miniature
Pieces: du = Grasshopper (G)
Genre: Fairies
Computer test: Popeye 4.61
FEN: 8/2*2Q5/8/k3*2Q3/*2Q7/4K3/8/4*2Q3
Input: Vaclav Kotesovec, 2020-10-01
Last update: Alfred Pfeiffer, 2020-10-16 more...
28 - P1380579
Viktoras Paliulionis
Maroc Echecs 08/2020
1. Preis
10. Maroc Echecs Tourney
Section h#3,5-10
P1380579
(2+6) C+
h#8
0.2.1...
1) 1. ... La2-b1 2. Se4-c3 Lb1-g6 3. Le6-a2 Kh5-g5 4. Kc5-c4 Kg5-f4 5. Tb2-b3 Kf4-e3 6. Tb3-a3 Ke3-d2 7. Kc4-b3 Kd2-c1 8. Dg8-c4 Lg6-c2#
2) 1. ... La2-d5 2. Le6-c8 Ld5-a8 3. Dg8-c4 Kh5-g6 4. Lc8-a6 Kg6-f5 5. Kc5-b5 Kf5-e5 6. Se4-c5 Ke5-d6 7. Tb2-a2 Kd6-c7 8. Ta2-a5 La8-c6#
play all play one stop play next play all
Final award 09/2020
Judge Marcos Roland
more ...
comment
Keywords: Aristocrat
Genre: h#
Computer test: Popeye 4.61
FEN: 6q1/8/4b3/2k4K/1r2n3/8/Br6/8
Input: Marcin Banaszek, 2020-10-03
Last update: Alfred Pfeiffer, 2020-10-04 more...
29 - P1380864
Edvin Alexander Ekholm
Hufvudstadsbladet 15/12/1929
P1380864
(4+2)
#3
1. Te6? Sb4 2. Td6+ Sd3+!

1. Lb1! Sb4 2. Td8+ Sd3+ 3. Txd3#
1. ... Kd2 2. Te2+ Kd1 3. Lc2#
play all play one stop play next play all
spätere Version: P1139269
Henrik Juel: Ruined by duals after 1... Se5,Se7,Sb8 (2020-10-13)
comment
Keywords: Critical move, Minimal (s), Miniature, Ideal mate (Gnaden-), Aristocrat
Genre: 3#
FEN: 4R3/8/2n5/8/4B3/8/N4K2/3k4
Input: Rainer Staudte, 2020-10-13
Last update: Alfred Pfeiffer, 2020-10-14 more...
30 - P1380994
Otto Oppenheimer
6 Aufbau (New York) 04/06/1943
zur Geburt unserer Schachecke
P1380994
(5+3) C+
#3
AL liegt nicht vor, vermutlich
1. Tf6! droht 2. Sc5+ Ke5 3. Te6#
1. ... Tg4 2. Sf2+ Ke5+ 3. Sxg4#
1. ... Te7 2. Sf2+ Ke5 3. Sg4#
play all play one stop play next play all
zunächst mit sSe3 abgedruckt, Korrektur 11.06.1943: "Im Problem No. 6 ist uns leider ein Fehler unterlaufen. Auf E3 steht nicht ein schwarzer Springer, sondern ein schwarzer Bauer. Wir bitten um Entschuldigung."
Das dürfte immer noch fehlerhaft sein (mit sBe3 geht einzügig 1. Tf4#!), mit sLe3 aber korrekt.

vollständiger Widmungstext: "Geschenkt von Otto Oppeneimer zur Geburt unserer Schachecke."
more ...
comment
Keywords: Aristocrat
Genre: 3#
Computer test: Popeye 4.61
FEN: 8/6r1/8/8/2K1k3/3Nb3/2B3N1/5R2
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...
31 - P1380996
Otto Oppenheimer
8 Aufbau (New York) 18/06/1943
P1380996
(5+2) C+
#2
1. Dg7! (Zugzwang)
1. ... Kd4 2. Dxf6#
1. ... Kxf4 2. Dg3#
1. ... Kxd6 2. Dc7#
play all play one stop play next play all
more ...
comment
Keywords: Symmetrical position, Symmetrical solution, Aristocrat
Genre: 2#
Computer test: popeye 4.85
FEN: 7Q/8/3N1r2/4k3/5N2/2R5/8/K7
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...
32 - P1381094
Zoltan Labai
Problemist of Ukraine 2020
2. Preis
Stanislaw-Kirilitschenko-Memorial
P1381094
(4+1) C+
#4
b) Sh6->b3
a) 1. Sf7+? Kd5 a 2. Kd3 B Kc5 3. Lf2+ Kd5 4. Td6#
1. ... Kf5!
1. Sg4+? Kf5 b 2. Kf3 Kg5 3. Ld2+ Kh5 4. Th6#
3. ... Kh4 4. Th6#
3. ... Kf5 4. Tf6#
1. ... Kd5!

1. Kd3! B Kd5 a 2. Sf7 A Kc5 3. Lf2+ Kd5 4. Td6#
1. ... Kf4 c 2. Tb5 Kf3 3. Tg5 Kf4 4. Tf5#

b) 1. Kf3? D Kf5 b 2. Lg3 C Kg5 3. Lf4+ Kh5 4. Th6#
3. ... Kh4 4. Th6#
3. ... Kf5 4. Sd4#
1. ... Kd5!

1. Lg3+? Kf5 b 2. Kf3 D Kg5 3. Lf4+ Kh5 4. Th6#
3. ... Kh4 4. Th6#
3. ... Kf5 4. Sd4#
1. ... Kd5!

1. Sd4! Kd5 a 2. Te6 Kc5 3. Ke4 Kc4 4. Tc6#
2. ... Kc4 3. Ke4 Kc5 4. Tc6#
play all play one stop play next play all
more ...
comment
Keywords: Rex solus (s), Aristocrat
Genre: n#
Computer test: SCHRECKE:a)+b): C+, Gustav 4.1d, Brute Force (2020-10-18)
FEN: 8/8/1R5N/4k3/8/4K3/8/4B3
Input: Rainer Staudte, 2020-10-18
Last update: Alfred Pfeiffer, 2020-10-21 more...
33 - P1381105
Valery Barsukov
Problemist of Ukraine 2020
2. ehrende Erwähnung
Stanislaw-Kirilitschenko-Memorial
P1381105
(4+1) C+
#4
1. Lb7? Kf8 2. Ld5 Ke8 3. Sf6+ Kf8 4. Tf7#
1. ... Kh8!

1. Sg5! Kf8 2. Tf7+ Ke8 3. Ld7+ Kd8 4. Se6#
2. ... Kg8 3. Le6 Kh8 4. Th7#
1. ... Kh8 2. Tf7 Kg8 3. Le6 Kh8 4. Th7#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat, Rex solus (s)
Genre: n#
Computer test: Henrik Juel: C+ Popeye 4.61 (2020-10-18)
FEN: 2B3k1/3R4/K7/8/4N3/8/8/8
Input: Rainer Staudte, 2020-10-18
Last update: Alfred Pfeiffer, 2020-10-21 more...
34 - P1381117
Valery Liskovets
Problemist of Ukraine Website 10/2020
1.-2. Lob
Stanislaw Kirilitschenko MT
Sektion h#3 4-5 Steine
P1381117
(3+1) C+
h#3*
b) wKf1->c5
a) * 1. ... Se1-g2 2. Kc3-c2 Kf1-f2 3. Kc2-d1 Sg2-e3#
1. Kc3-b2 Se1-g2 2. Kb2-c2 Kf1-f2 3. Kc2-d1 Sg2-e3#
b) * 1. ... Kc5-b6 2. Kc3-b4 Se1-c2+ 3. Kb4-a4 Sb3-c5#
1. Kc3-b2 Kc5-b6 2. Kb2-a3 Se1-c2+ 3. Ka3-a4 Sb3-c5#
play all play one stop play next play all
PR Valery Kopyl
VL: Two waiting moves in a): B1 and W2. (2020-10-21)
comment
Keywords: Rex solus (s), Aristocrat
Genre: h#
Computer test: Popeye 4.83
FEN: 8/8/8/8/8/1Nk5/8/4NK2
Input: Marcin Banaszek, 2020-10-18
Last update: Alfred Pfeiffer, 2020-10-21 more...
35 - P1381218
Alberto Armeni
Problem Observer 2009
P1381218
(4+3) C+
#2
b) wSh6->b6
c) wSh6->e1
a) 1. Sf5? droht 2. Sd4# 2. Sg7#
1. ... Ld7!

1. Sf7! droht 2. Sg5# 2. Sd8#
1. ... Lxc3 2. Dd6#
1. ... Le7 2. Dxc8#
1. ... Ld6 2. Dxd6#
1. ... Ld7 2. De5#

b) 1. Dd8? droht 2. Df6#
1. ... Le7 2. Dd5#
1. ... Lxc3!

1. Sc4! droht 2. Df7#
1. ... Le7 2. Dxc8#
1. ... Ld7 2. De5#

c) 1. Sf3? droht 2. Sg5# 2. Sd4#
1. ... Lxc3!

1. Sd3! droht 2. Sf4#
1. ... Ld6 2. Df7#
1. ... Ld7 2. De5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61, except for the double threat in part a) (2020-10-22)
comment
Keywords: Aristocrat
Genre: 2#
Computer test: Popeye 4.61
FEN: 2b5/2Q5/4k1KN/8/1b6/2N5/8/8
Input: Rainer Staudte, 2020-10-22
Last update: Alfred Pfeiffer, 2020-10-22 more...
36 - P1381277
Hartmut Brozus
18328 Die Schwalbe 305 10/2020
P1381277
(5+2) C+
s#5
b) Th1->a1
more ...
comment
Keywords: Castling (wk,wl), Echo, Aristocrat
Genre: s#
Computer test: Henrik Juel: C+ Popeye 4.61 (2020-10-25)
FEN: 8/8/3q4/8/R7/3k4/5Q2/N3K2R
Input: Rainer Staudte, 2020-10-25
Last update: Alfred Pfeiffer, 2020-10-26 more...
37 - P1381280
Hartmut Brozus
18330 Die Schwalbe 305 10/2020
P1381280
(5+2) C+
s#11
b) Ta1->h1
more ...
comment
Keywords: Castling (wl), Aristocrat
Genre: s#
Computer test: SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force (2020-10-25)
FEN: 8/6q1/8/Q7/7R/4k3/8/R3K2B
Input: Rainer Staudte, 2020-10-25
Last update: Alfred Pfeiffer, 2020-10-26 more...
38 - P1381285
Andrew Buchanan
James Malcom

MatPlus.net Forum 25/10/2020
P1381285
(5+7) C+
#3
Bosma
1. Tf5+! Sxf5+ 2. Se4+! Sxe4 3. De6#
play all play one stop play next play all
James Malcom: I've added in the solution now. (2020-11-02)
Henrik Juel: Thanks, James
I cannot test the problem, but it seems OK (2020-11-02)
A.Buchanan: Thanks Henrik: it's C+ according to WinChloe (2020-11-03)
comment
Keywords: Aristocrat, Bosma
Genre: 3#, Fairies
Computer test: C+ WinChloe v3.51
FEN: 3r2R1/3Q4/3K1k2/2n1R3/1b6/6n1/3N3q/3r4
Input: A.Buchanan, 2020-10-25
Last update: A.Buchanan, 2020-11-03 more...
39 - P1381323
Bernd Schwarzkopf
G36/12 feenschach 2017
Lob
PR Klaus Wenda
P1381323
(2+1) C+
#8
Haaner Schach
b) wSe3->h3
c) wSe3->h2
a) 1. Sc4 Ka2 2. Kc3 Kb1 3. Kd3 Kc1 4. Ke4 Kd1 5. Kf3 Ke1 6. Kg2 Ke2 7. Sa5 Kd2 8. Sb3#
b) 1. Sf4 Ka2 2. Sd5 Ka3 3. Kc3 Ka4 4. Kc4 Ka5 5. Kc5 Ka6 6. Kc6 Ka7 7. Kc7 Ka8 8. Sb6#
c) 1. Kb3 Kb1 2. Sg4 Kc1 3. Kc3 Kd1 4. Kd3 Ke1 5. Ke3 Kf1 6. Kf3 Kg1 7. Kg3 Kh1 8. Sf2#
play all play one stop play next play all
more ...
comment
Keywords: corner to corner (in b+c), Corner mate (in b+c), Haaner Chess, Minimal (S), Rex solus (s), Aristocrat
Genre: Fairies
Computer test: Popeye 4.61
FEN: 8/8/8/8/8/4N3/2K5/k7
Reprints: feenschach 236, p. 176, 07-08/2019
Input: Gunter Jordan, 2020-10-27
Last update: Alfred Pfeiffer, 2020-10-28 more...
40 - P1381390
Ivan Bryukhanov
798 Pat a Mat 113 09/2020
P1381390
(3+3) C+
h#5
0.1.1...
b) sKg5->g4
a) 1. ... Se7 2. Da5+ Kb7 3. Tf7 Kc6 4. Kf6 Kd6 5. Dg5 Se8#
b) 1. ... Se6 2. Dg3 Kb7 3. Tf6 Kc6 4. Kf5 Kd5 5. Dg4 Se7#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat, Echo, Remote selfblock, Exchange of roles (S-S), Ideal mate, Miniature, Selfblock, Twin
Genre: h#
FEN: K5N1/2q3N1/8/6k1/8/8/8/5r2
Input: Gunter Jordan, 2020-10-30
Last update: Alfred Pfeiffer, 2020-10-31 more...
41 - P1381534
Mirko Degenkolbe
7571 Kudesnik 223, p. 15, 15/03/2020
Memorial Miroslav Havel-140
P1381534
(4+1) C+
#4
b) alles 1 Feld nach links
a) 1. Ld4? Kd6!
1. Lf4! Zugzwang
1. ... Kf6 2. Lf5 Kg7 3. Lg5 Kh8 4. Lf6#

b) 1. Le4? Ke6!
1. Lc4! Zugzwang
1. ... Kc6 2. Lc5 Kb7 3. Lb5 Ka8 4. Lc6#
play all play one stop play next play all
[MD 1455]
Symmetrische Stellungen mit asymmetrischen Lösungen.
Farbwechsel-Echo-Mustermatts
Henrik Juel: The twin brings nothing new (2020-11-04)
A.Buchanan: Does the twin relate to the tourney theme maybe? (2020-11-05)
more ...
comment
Keywords: Aristocrat, Oneliner, Chameleonecho, Symmetrical position, Asymmetrical solution, Rex solus (s), Model mate
Genre: n#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 4K3/4N3/4k3/8/4B3/4B3/8/8
Input: Felber, Volker, 2020-11-04
Last update: Felber, Volker, 2020-11-11 more...
42 - P1381569
Alberto Armeni
D389 Problem Paradise 70 04/2015
P1381569
(4+2) C+
#4
1. Tf1! Sg4 2. Tf4 Ke6 3. Txg4 Kf5 4. Ld7#
3. ... Kd6 4. Tg6#
1. ... Se4 2. Kxe4 Kc5 3. Tc1+ Kd6 4. Tc6#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat
Genre: n#
Computer test: Popeye 4.61
FEN: 4B3/8/3k4/3N4/3K4/8/5n2/4R3
Input: Rainer Staudte, 2020-11-05
Last update: Alfred Pfeiffer, 2020-11-07 more...
43 - P1381604
Erich Bartel
319 Hobelspäne (3) 07/11/2020
P1381604
(1+1) C+
h==4
Haaner Schach
b) sKh5->h6
c) wDa1->a8, sKh5->h3
d) ferner sKh3->h4
a) 1. Kh5-g6 Da1-g7+ 2. Kg6-f5 Dg7-h7 3. Kf5-g5 Dh7-g8 4. Kg5-h6 Dg8-h8==
b) 1. Kh6-h7 Da1-a7+ 2. Kh7-g8 Da7-b8+ 3. Kg8-g7 Db8-b7+ 4. Kg7-h8 Db7-a8==
c) 1. Kh3-h2 Da8-a2+ 2. Kh2-g1 Da2-b1+ 3. Kg1-g2 Db1-b2+ 4. Kg2-h1 Db2-a1==
d) 1. Kh4-g3 Da8-g2+ 2. Kg3-f4 Dg2-h2 3. Kf4-g4 Dh2-g1 4. Kg4-h3 Dg1-h1==
play all play one stop play next play all
Alfred Pfeiffer: c) und d) sind nur Spiegelungen von b) und a) an der horizontalen Brettmitte. (2020-11-07)
comment
Keywords: Four corners, Haaner Chess, Rex solus (s), Aristocrat
Genre: Fairies
FEN: 8/8/8/7k/8/8/8/Q7
Input: Erich Bartel, 2020-11-07
Last update: Alfred Pfeiffer, 2020-11-07 more...
44 - P1381885
Frank Christiaans
Probleemblad 1993
1. Lob #2
151. Thematurnier
P1381885
(5+2) C+
#2
Bosma
1. Se7! zz
1. ... Lh5,Le8 2. Tg8#
1. ... Kg8,La2,Lb3,Lc4,Ld5,Le6 2. Seg6#
1. ... Lg6 2. Tg8,Sexg6#
1. ... Lg8 2. Txg8,Seg6,Sfg6#
play all play one stop play next play all
Henrik Juel: Popeye says 1.Se7 and 1.Sh6
How does the Bosma condition change this?
The intention is probably 1.Sh6, as 1.Se7 entails far more duals (2020-11-14)
A.Buchanan: 1. Sh6? fails to 1. Kg8,La2,...,Le6 as can't unoverload g8. 1.Se7! has duals after Lg6 & Lg8. This isn't great but in better shape than many of the others (2020-11-14)
Henrik Juel: Thanks, Andrew
The weird condition is trickier than I thought (2020-11-14)
A.Buchanan: Haha yes Henrik: they are hard to debug: because it's always unclear whether a piece, of either colour, is helping or hurting :) (2020-11-14)
comment
Keywords: Bosma, Aristocrat
Genre: 2#, Fairies
Computer test: C+ WinChloe 3.51
FEN: 5NNk/5bRB/5K2/8/8/8/8/8
Input: A.Buchanan, 2020-11-14
Last update: A.Buchanan, 2020-11-18 more...
45 - P1381887
Luke Neyndorff
T0758 StrateGems 56 2011
P1381887
(4+3) C+
#2
1. Tf7! droht 2. Dxg7#
1. ... Dxg4,Dg5,Dg6 2. Texf8#
1. ... Kxf7 2. De6#
play all play one stop play next play all
more ...
comment
Keywords: fluchtfeldgebender Opferschlüssel, Aristocrat
Genre: 2#
Computer test: Popeye 4.61
FEN: 4Rrk1/6q1/8/8/6Q1/5R2/8/7K
Input: Rainer Staudte, 2020-11-14
Last update: Alfred Pfeiffer, 2020-11-16 more...
46 - P1382004
Kurt Renner

P1382004
(7+5)
#2
1. Te1! droht 2. Txe4#
1. ... Kxd4 2. Dxe4#
1. ... Sbc5 2. Sc6#
1. ... Sbd6 2. Lg7#
1. ... Dxe1 2. Sf3#,Sc6#
1. ... Dxd4 2. Dg5#
1. ... Dc2 2. Sf3#
1. ... Dd3,De3 2. Sc6#
1. ... Dc6 2. Sxc6#,Sf3#
1. ... Df3 2. Sxf3#,Sc6#
play all play one stop play next play all
Originalquelle laut 'NWT': "D. Sch. Bl. 1935"
Stefan Felber: Cook-NL unzutreffend! (2020-11-17)
Mario Richter: Danke, Stefan! - dreimal geprüft und trotzdem beim eigenen Computertest übersehen, daß ich dort fälschlich #3 angegeben habe ... (2020-11-18)
Henrik Juel: Slightly damaged by the duals indicated (2020-11-18)
comment
Keywords: Aristocrat
Genre: 2#
FEN: 5B1K/1nN5/4B3/r3k3/3Nn2Q/2q5/8/3R4
Reprints: Neues Wiener Tagblatt 13/02/1944
Input: Mario Richter, 2020-11-16
Last update: Mario Richter, 2020-11-18 more...
47 - P1382005
Kurt Renner
Leipziger Zeitung 1939
P1382005
(8+8) C+
#2
1. Tc6! droht 2. Dg5#
1. ... Txc6 2. Sd3#
1. ... Tg3,Tf3 2. Sc4#
1. ... Tg4,Tf4 2. Sd3#
1. ... Sd6 2. Dxd6#
1. ... Se6 2. Txe6#
1. ... Lf6 2. Dxf6#
play all play one stop play next play all
more ...
comment
Keywords: Aristocrat
Genre: 2#
Computer test: Popeye 4.61
FEN: 1K5b/1nn4B/b6Q/1R1qk3/2Rr4/2r5/1NN5/B7
Reprints: Neues Wiener Tagblatt 20/02/1944
Input: Mario Richter, 2020-11-16
Last update: Alfred Pfeiffer, 2020-11-21 more...
48 - P1382009
Kurt Renner

P1382009
(5+4) C+
#2
1. Lb8! (Zugzwang)
1. ... Se3,Sd1~ 2. Sf2#
1. ... Te1,Tf1 2. Dxg2#
1. ... Dxa8,Dg2~ 2. Txg1#
play all play one stop play next play all
Originalquelle laut 'NWT': "Niederschlesische Zeitung 1934"
more ...
comment
Keywords: Aristocrat
Genre: 2#
Computer test: Popeye 4.61
FEN: Q5RK/8/8/8/8/6BN/6q1/3n2rk
Reprints: Neues Wiener Tagblatt 19/03/1944
Input: Mario Richter, 2020-11-16
Last update: Alfred Pfeiffer, 2020-11-21 more...
49 - P1382266
Alberto Armeni
282 Curierul Problemistic 4 01/2020
P1382266
(4+1)
#3
1. Se2! Kd6 2. Se5 Kd5 3. Dd4#
1. ... Ke4 2. Db3 Kf5 3. De6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2020-11-21)
comment
Keywords: Aristocrat
Genre: 3#
FEN: 8/5K2/8/3k4/8/2Q2N2/8/6N1
Input: Rainer Staudte, 2020-11-21
Last update: Rainer Staudte, 2020-11-21 more...
50 - P1382267
Alberto Armeni
C173 SuperProblem (Website) 05/2018
P1382267
(4+1)
#4
1. Sd2! Ke1 2. Kc2 Ke2 3. Lc4+ Ke1 4. Sf3#
1. ... Kc1 2. Lb3 Kb2 3. Lc5 Kc1 4. La3#
3. ... Ka1 4. Ld4#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2020-11-21)
comment
Keywords: Aristocrat
Genre: n#
FEN: 6B1/8/8/8/2N5/3K4/8/3k2B1
Input: Rainer Staudte, 2020-11-21
Last update: Rainer Staudte, 2020-11-21 more...
51 - P1382310
Constantin G. Gavrilov
294 Revista de Sah 10 15/05/1926
P1382310
(4+1)
#3
1. Kd2! Kb5 2. Se5 Kb4 3. Tb8#
1. ... Kd5 2. Db6 Kc4 3. Se3#
1. ... Kd6 2. Db6+ Kd5 3. Se3#
2. ... Kd7 3. Sf6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2020-11-22)
comment
Keywords: Aristocrat
Genre: 3#
FEN: 4R3/Q7/2k5/8/6N1/8/8/4K3
Input: Rainer Staudte, 2020-11-22
Last update: Rainer Staudte, 2020-11-22 more...
52 - P1382582
Christopher Max Bazett Tylor
PS3533 The Problemist Supplement 166, p. 79, 05/2020
P1382582
(3+1) C+
h#3
b) Mattposition a) wK<>sK
c) Mattposition b) wK<>sK
a) 1. Ka7 Tb5 2. Ka6 Tb6+ 3. Ka5 Sc4#
b) 1. Ka2 Kb5 2. Kb3 Kc5 3. Ka4 Tb4#
c) 1. Kc6 Sb6 2. Kb7 Sc8 3. Ka6 Tb6#
play all play one stop play next play all
Henrik Juel: Unusual twinning (2020-11-29)
comment
Keywords: Aristocrat
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/8/1k1N4/2R5/8/K7/8/8
Input: Felber, Volker, 2020-11-29
Last update: Felber, Volker, 2020-11-29 more...
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The problems of this query have been registered by the following contributors:

Felber, Volker (8)
Selbstmatt-Miniaturen/Reflexmatt-Miniaturen (1)
Frank Müller (12)
Zuncke/Bruder (1)
Rainer Staudte (14)
A.Buchanan (3)
Mario Richter (6)
TLi (1)
Vaclav Kotesovec (1)
Marcin Banaszek (2)
Gunter Jordan (2)
Erich Bartel (1)