Chess Problem Database Server

136 problem(s) found in 2337 milliseconds (displaying 100 problem(s)). [COMMENTDATE>=20200919 AND NOT COOKED AND K='symmetrische Position'] [download as LaTeX]

1 - P0002762
Alexander Kislyak
1180 Phénix 17 06/1992

(16+16) C+
BP in 23,0

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. Kb1 Kb8 10. Tc1 Tc8 11. Tc3 Tc6 12. Tg3 Tg6 13. Tg4 Tg5 14. g3 g6 15. Lg2 Lg7 16. Ld5 Ld4 17. Sf3 Sf6 18. Tc1 Tc8 19. Tc3 Tc6 20. Te3 Te6 21. Te4 Te5 22. Tef4 Tef5 23. e4 e5
play all

more ...
comment

Keywords: Unique Proof Game, Castling (wgsg), Symmetrical position, Capture-free
Genre: Retro
Computer test: Mondenhauer C+ Stelvio 1.11 00:09:39 Minuten. (hh:mm:ss) Keine Lösung: BP 22.0, BP 22.5.
FEN: 1k6/p2p1p1p/np3npq/1bpBprr1/1BPbPRR1/NP3NPQ/P2P1P1P/1K6
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-03-27 more...

2 - P0004269
Herbert Hultberg
7969 Tidskrift för Schack 03/1938

(3+6) C+
#3
Längstzüger

1. exf6ep d5,g5 2. Db7 g5,d5 3. Dg7#
play all

Henrik Juel: The longest among the possible last moves is f7-f5, so 1.exf6ep d5 2.f7 g5 3.f8Q!?, but 3... Kh7!, so something is wrong. (2003-11-11)
HBae: Habe korrigiert. Es fehlte der wKa1 und die wDb2. (2019-10-11)
Henrik Juel: C+ by Popeye 4.61 (assuming that the condition was in effect also in last move)
Pd7 and Pg4 can be removed without affecting correctness or symmetry (2019-10-11)
Bernd Schwarzkopf: Pd7 and Pg4 are necessary. Without them last move could have been: 1.Pg6xXf5. (2021-02-06)
Mario Richter: Interestingly, the Editors of 'TfS' too thought that Pd7 and Pg4 can be omitted (s. 'TfS' 06/1938, p.124: "Går det inte lika bra utan bönderna på d7 och g4? (BL). Jo, det går visst lika bra. Men förf. har väl haft någon mening med dem också (Red.)."

I think, pawn d7 serves to prevent retractions like R: 1.Pg6xXf5, but pawn d4 is only there to complete the symmetry (i.e. Pd7 is necessary, Pg4 is not). (2021-02-06)
A.Buchanan: Doesn’t bPg4 stop 2.Dg2 as a dual? (2021-02-07)
comment

Keywords: Maximummer, En passant as key, Asymmetrical solution, Symmetrical position
Genre: Retro, 3#, Fairies
FEN: 7k/3p2p1/4p3/4Pp2/6p1/8/1Q6/K7
Reprints: (II) Problem 65-68 01/1960
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-06-03 more...

3 - P0006046
Niels Høeg
8474 The Fairy Chess Review 28/11/1949

(11+11)
Schwarz nimmt 1 Zug zurück, dann h#1

R: 1. ... Ka3-b2, dann 1. Ka4 Lb5#
play all

The pawns have captured 8 times to get around each other, plus 2 times to create the square color imbalance (6 light-squared white bishops and only 4 black ones). Thus all captures were done by pawns, so retractions like Ka3xb2, Kb3-b2, or Kc2-b2 are illegal.

Henrik Juel: The problems in this issue were dedicated to T.R. Dawson to celebrate his 60th birthday on 28/11/1949
The solution (FCR 06/1950 p.109) offered no real explanation
Dawson just wrote: Cooks claimed to this masterpiece involve illegal retractions (2022-04-28)
more ...
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Keywords: Help retractor, Non-standard material, Symmetrical position, Asymmetrical solution
Genre: Retro
FEN: bb3BB1/bBb3KB/1B5B/8/2B5/3B2b1/bk3BBb/1b4bb
Reprints: 1494 FEENSCHACH 10/1952
7 Rund um das Schachbrett 1955
(267) feenschach 52 10-12/1980
Thema Danicum 94 1999
H34 ASymmetrie 2013
Input: Gerd Wilts, 1995-07-16
Last update: Alfred Pfeiffer, 2017-09-27 more...

4 - P0502631
John Niemann
2748 The Fairy Chess Review 06/1937

(5+3)
-1s dann h#1

R: 1. ... Ke4xSd4, dann Kf4 Sge6#
play all

Adrian Storisteanu: BQc3 not needed (5+2) for soundness!? (2021-05-07)
comment

Keywords: Symmetrical position, Asymmetrical solution
Genre: h#
FEN: 7K/6N1/1P3N2/4p3/3k4/2q5/5P2/8
Reprints: H25 ASymmetrie 2013
Input: hpr, 1996-07-23
Last update: Alfred Pfeiffer, 2013-07-17 more...

5 - P0515534
E. Rosinko
3820 Revista de Sah 01/1978

(3+3)
h#2
2.1...
b) sLb5, sLf5

a) 1. Ke6 Kc5 2. Ke5 Te1#
a) 1. Kc6 Ke5 2. Kc5 Tc1#
b) 1. Lbd7 Tb1 2. Kc6 Tb6#
b) 1. Lfd7 Tf1 2. Ke6 Tf6#
play all

Henrik Juel: C+ Popeye 4.61 (also) (2023-02-27)
comment

Keywords: Symmetrical position, Miniature, Obvious promotion
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/3k4/1p1N1p2/3K4/8/8/3R4
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: Rainer Staudte, 2023-02-27 more...

6 - P0517873
Sergiu Than
Revista Romana de Sah 08/1938

(5+3) C+
h#2

1. Ke5 Lc5 2. f6 Sg6#
play all

Erich Bartel: lt.Original-Quelle lautet die Forderung:Hilfszüger-Selbstmatt 2#, wobei die hier dargestellte Stellung um 180 Grad gedreht und mit vertauschten Farben dargestellt ist, weil zur damaligen Zeit die Forderungen noch nicht standardisiert waren.---
Die Aufgabe ist T.R.Dawson gewidmet.---
Nachdruck:
1) O2) Problemkiste (126) XII 1999.--- (2007-07-18)
Henrik Juel: for clarity: 2.f6 S8g6# (2021-11-23)
comment

Keywords: Symmetrical position
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 5N2/5p2/5k2/5r2/5N2/5P2/5B2/5K2
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...

7 - P0519078
Edgar D. Holladay
137v Ideal-Mate Review 07-08/1983

(5+2) C+
h#4

1. Ke4 Kb2 2. Db5+ Kc2 3. Kd5 e4+ 4. Kc4 d3#
play all

YM: The symmetric final position and wK tempo move. (2022-04-10)
comment

Keywords: Symmetrical position
Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 8/8/8/8/3P4/1KPqPk2/3P4/8
Input: Hans-Jürgen Schäfer, 1997-09-01
Last update: hpr, 1999-10-28 more...

8 - P1000170
Andrej N. Kornilow
7 Die Schwalbe 169, p. 342, 02/1998
2. Lob

(16+16) C+
KBP?

1. h4 a5 2. h5 a4 3. h6 a3 4. Th5 Ta4 5. Ta5 Th4 6. b4 g5 7. Lb2 Lg7 8. Ld4 Le5 9. Sc3 Sf6 10. Db1 0-0 11. Db3 Kh8 12. 0-0-0 Tg8 13. Kb1 Tg6 14. Ka1 Dg8 15. Tb1 Se8 16. Sd1 Td6 17. Dd3 Dg6 18. Tb3 De6 19. Dg6 Lf6 20. Te3 Db3 21. Lc3 Tdd4 22. Tee5 Sd6 23. Se3
play all

Moldenhauer: Computerprüfung: C+ Stelvio 1.31 89 Sekunden.
Keine Lösung: BP 22.0. (2023-06-20)
more ...
comment

Keywords: Unique Proof Game, Symmetrical position, Capture-free
Genre: Retro
Computer test: Natch 3.1 (13 min.)
FEN: 1nb4k/1ppppp1p/3n1bQP/R3R1p1/1P1r3r/pqB1N3/P1PPPPP1/K4BN1
Input: Gerd Wilts, 2000-08-01
Last update: Alfred Pfeiffer, 2018-12-19 more...

9 - P1000246
Andrej N. Kornilow
Alexander Kislyak
10666 Die Schwalbe 181 02/2000

(15+15) C+
BP in 30,5

1. h4 a5 2. h5 a4 3. h6 a3 4. hxg7 axb2 5. Th6 Ta3 6. Tc6 Tf3 7. a4 h5 8. a5 h4 9. a6 h3 10. a7 h2 11. a8=D h1=D 12. Da5 Dh4 13. De5 Dd4 14. Ta5 Th4 15. Sa3 Sh6 16. g8=D b1=D 17. Dgg3 Dbb6 18. Dh2 Da7 19. g4 b5 20. g5 b4 21. g6 b3 22. g7 b2 23. g8=D b1=D 24. Dgg2 Dbb7 25. Lb2 Lg7 26. Da1 Kf8 27. Kd1 Kg8 28. Kc1 Kh7 29. Kb1 Dh8 30. Ka2 Lf8 31. Lc1
play all

Reto: This is a case where strategy analysis in Stelvio is in a certain sense optimal: Only 1 strategy remains after analysis, namely the one that belongs to the solution. (2023-04-25)
more ...
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Keywords: Unique Proof Game, Symmetrical position, Non-standard material (DDdd), Phoenix, Prenix, Ceriani-Frolkin Theme, Asymmetrical solution, Promotion (DDDddd)
Genre: Retro
Computer test: Computerprüfung: C+ Stelvio 1.11 1 Sekunde. Keine Lösung: BP 29.5, BP 30.0.
FEN: 1nb2b1q/qqpppp1k/2R4n/R3Q3/3q3r/N4r2/K1PPPPQQ/Q1B2BN1
Input: Gerd Wilts, 2000-08-01
Last update: A.Buchanan, 2023-04-26 more...

10 - P1013022
Kay Soltsien
467 Die Schwalbe 09-10/1960

(16+16) C+
BP in 22,0

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. Kb1 Kb8 10. Tc1 Tc8 11. Tc3 Tc6 12. Tg3 Tg6 13. Tg4 Tg5 14. g3 g6 15. Lg2 Lg7 16. Le4 Le5 17. Sf3 Sf6 18. Tc1 Tc8 19. Tc3 Tc6 20. Te3 Te6 21. Ld3 Ld6 22. Te4 Te5
play all

No. 981 HN
Moldenhauer: Ergänzung Computerprüfung: C+ Stelvio 2.1; Keine Lösung BP 21.5. (2024-04-17)
comment

Keywords: Unique Proof Game, Symmetrical position, Capture-free
Genre: Retro
Computer test: Natch 2.2 Copyright (C) 1997,98,99,2001,2002,2003 Pascal Wassong
FEN: 1k6/p2ppp1p/np1b1npq/1bp1r1r1/1BP1R1R1/NP1B1NPQ/P2PPP1P/1K6
Reprints: mpk-Blätter 04/2011
Input: Henri Nouguier, 2004-01-11
Last update: A.Buchanan, 2014-05-23 more...

11 - P1013743
Rudolf Queck
Hans Gruber
4687 feenschach 76 08/11/1985
In memoriam Albert H. Kniest

(1+2)
=6*
Zwei Lösungen
Längstzüger
Gitterschach
6x6-Brett
sDU=Grashüpfer

* = Diagrammstellung (Nullsatz)
1) 1. Se3! Ge4 2. Sc2 Gb1 3. Sb4 Gb5 4. Sd5 Ge5 5. Se3 Ge2 6. Sd1=
2) 1. Sc3! Kf2 2. Sb5 Ga6 3. Sd6 Ge6 4. Sf5! Kf3 5. Se3 Ge2 6. Sd1=
play all

RQ-Buch: "In der Ausgangsstellung steht Schwarz schon patt. Die erste Lösung läuft konventionell ab mit Rundläufen von Springer und Grashüpfer; in der zweiten Lösung wird wohl sehr überraschend der schwarze König vom einzig denkbaren Pattfeld mit einem kürzestmöglichen Längstzug fortgezwungen - eine Löserhürde!"

SCHRECKE: C+, popeye 4.87 (2021-12-17)
comment

Keywords: Grid Chess, Maximummer, no 8x8 board, Thema Null, Aristocrat, Oneliner, Symmetrical position, Asymmetrical solution
Pieces:

= Grasshopper (G)
Genre: Fairies
FEN: qqqqqqqq/qqqqqqqq/6qq/6qq/6qq/5kqq/4*2q1qq/3N2qq
Reprints: (27) RQu -- 36 Gitterschachaufgaben von Rudolf Queck , p. 35, 1989
Input: Hans Gruber, 2004-05-01
Last update: Alfred Pfeiffer, 2018-11-20 more...

12 - P1017589
Valery Liskovets
120 Redkiye zhanry-plus 73 1997

(7+5)
h#3 (pRA)

I) 1. Sg4 f4+ 2. Kxf4 0-0+ 3. Kg3 Tf3#
II) 1. Sc4 d4+ 2. Kxd4 0-0-0+ 3. Kc3 Td3#
play all

Symmetrical (both the position and partial solutions). The last move?

Henrik Juel: C+ Popeye 4.61 (2021-01-23)
comment

Keywords: Partial Retro Analysis (PRA), Symmetrical position, Castling
Genre: Retro
FEN: 8/8/8/4k3/1p5p/4n2p/P2PPP2/R3K2R
Input: Valery Liskovets, 2004-06-25
Last update: James Malcom, 2021-01-23 more...

13 - P1017983
Jan Hartong
The Observer 06/1920
3. ehrende Erwähnung

(11+3) C+
#2

1. ... Kd6 2. Lg3#
1. ... Kf6 2. Lc3#
1. ... Kf4 2. Sd3#
1. ... Kd4 2. Sf3#
1. La5! Kd6 2. e5#
1. La5! Kf6 2. Lc3#
1. La5! Kf4 2. Lc7#
1. La5! Kd4 2. Sf3#
play all

BS Problemid: 2816
Authors: Hartong, Jan
Sources:
Years: 1920

Zugwechsel
A.Buchanan: Star-flights, symmetry breaking, changed mates and for once no en passant! (2022-07-15)
more ...
comment

Keywords: Brian Stephenson Collection (2816), Symmetrical position, Symbol problem (Weihnachtsbaum), Asymmetrical solution
Genre: 2#
Computer test: C+, popeye 4.87
FEN: 4K3/4P3/8/2pPkPp1/2P1P1P1/8/1N2R2N/4B3
Reprints: 87 Kurioses Schach 1975
A11 ASymmetrie 2013
1554 Augsburger Allgemeine 08/12/2018
1108 Scobs lignea 08/12/2018
Input: Brian Stephenson, 2004-08-12
Last update: A.Buchanan, 2022-07-15 more...

14 - P1021987
M.J. Murphy
LXXIX Canadian Chess Problems , p. 81, 1890
Dedicated to Mr. J.B.Halkett

(10+3) C+
#3

1. Te3! Kf5 2. d5
1. ... Kd5 2. f5
play all

more ...
comment

Keywords: Brian Stephenson Collection (6842), Zugzwang-Goal, Symmetrical position, Echomatt
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 4K3/8/2p1k1p1/2P1N1P1/3PRP2/2P3P1/4N3/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-25 more...

15 - P1022460
Antonio G. Corrias
Conversazioni della Domenica (Milano) 1891

(8+6) C+
#2

1. Ke2!

more ...
comment

Keywords: Brian Stephenson Collection (7316), Symmetrical position
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 8/8/8/3npn2/3rkr2/4P3/2PP1PP1/1N2K2N
Reprints: 19 150 Schachkuriositäten 1910
13 The White Knights , p. 33, 1917
68 Kurioses Schach 1975
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-07 more...

16 - P1038093
Manfred Zucker
8304 Schach , p. 326, 07/1977
Problemturnier des DSV der DDR 1977
1. Preis Mehrzüger-Abteilung
Richter: Volker Zipf

(4+5)
#4

1. Tbb7! Sd2+ 2. Kg3 Sc4 3. Kxh3 Sa5,S~ 4. Sb6#
1. Tdb7? Sg5+ 2. Kf2 Se6 3. Kxf1 c4!
play all

(MZ436)
.
Sally: Schach, Juli 1977. Nationales Problemturnier der DDR,1977,
1. Pr. FIDE - Album 1977 - 1979, Nr, 387.
1. Tdb7? - Sg5+, 2. Kf2 - Se6, 3.Kxf1 - Bc4!
1. Tbb7! -Sd2+, 2. Kg3 - Sc4, 3. Kxh3 - S--, 4. Sb6#.
Diagonal - symmetrische Stellung !
S. 38 Ausgewählte S. Aufgaben (Zucker).
S. 156 Problem S. ( Siehndel).
S. 130 Schwalbe Jun1 2007.
S. 118 S. ohne Partner (Grasemann)
S. 47 S. Report April 1988. (2010-08-21)
Henrik Juel: damaged by duals
1... Sh2+ 2.Kg3,Ke4
1... Sg5+ 2.Kf2,Ke2 (2021-03-12)
comment

Keywords: Brian Stephenson Collection (23043), Symmetrical position, Asymmetrical solution
Genre: n#
FEN: k7/3R4/3p4/1RpN4/8/5K1n/8/5n2
Reprints: 118 Schach ohne Partner für Könner 1982
213 Problemschach [Siehndel] 1984
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-12 more...

17 - P1038718
Leonard Nicolaas de Jong
624 Good Companions 10/1915

(8+5) C+
#2

1. Dd8? Sd6!

1. Db8! Sxa3 2. Lxa3#
1. ... Sb2 2. Kxb2#
1. ... Sd2 2. Kxd2#
1. ... Sxe3 2. Lxe3#
1. ... Sd6 2. Da7#
1. ... Sb6 2. Df8#
play all

more ...
comment

Keywords: Brian Stephenson Collection (23669), Symmetrical position, Asymmetrical solution, Zugzwang-Goal, discovered checkmate
Genre: 2#
Computer test: SCHECKE: popeye 4.87
FEN: 8/2Q5/2p5/p1k1p3/P1n1P3/P1K1P3/2R5/2B5
Reprints: 23D The Good Companion Two-Mover 1922
L70 Darnall Magazine 19 14/07/1987
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-07 more...

18 - P1038755
Thomas R. Dawson
Eskilstuna-Kuriren 1916

(7+5)
#2

1. Te1! droht 2. Dc3#
1. ... e3 2. Dc6#
1. ... exf3 2. Te6#
1. ... gxf3 2. Tg6#
play all

SCHRECKE: C+, popeye 4.85 (2021-05-16)
comment

Keywords: Brian Stephenson Collection (23707), Symmetrical position, Asymmetrical solution
Genre: 2#
FEN: 5K2/5B2/5k2/5p2/4pPp1/4RQR1/5P2/5r2
Reprints: 50 Bote von der Ybbs 24/10/1930
Input: Brian Stephenson, 2004-08-12
Last update: Mario Richter, 2021-05-16 more...

19 - P1038866
Adolph Jay Fink
Good Companions 02/1917

(7+3) C+
#2

1. Dd2!

more ...
comment

Keywords: Brian Stephenson Collection (23819), Knight's wheel (schwarz), Symmetrical position
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 8/3p4/3k4/3n4/1NRBRN2/3Q4/8/3K4
Reprints: The Good Companion Two-Mover 1922
51 The American Two-move Chess Problem , p. 45, 1965
Problemschach [Sidler] , p. 109, 1968
2345 Chess Problems 1997
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-02-12 more...

20 - P1040055
Edward John Winter-Wood
4 Hampshire Magazine 02/1884

(5+4) C+
#2

1. Kd7! (Zugzwang)
1. ... Sa2,Sc3~ 2. Se2#
1. ... Sed1,Se3~ 2. Sc2#
1. ... Le6+ 2. Sxe6#
1. ... Lc6+ 2. Sxc6#
1. ... La2,Lb3,Lc4,Lg8,Lf7 2. Sc6#
1. ... Lh1,Lg2,Lf3,Le4,La8,Lb7 2. Se6#
play all

BS Problemid: 25011
Authors: Winter-Wood, Edward John
Sources: Chess Souvenirs 1886
Years: 0000

Motto: "The true 'Anchor of Hope'"

for beginners
more ...
comment

Keywords: Brian Stephenson Collection (25011), Symbol problem (Anker), Symmetrical position
Genre: 2#
Computer test: SCHRECKE (2023-01-15): C+, popeye 4.87
FEN: 3K4/8/3B4/3b4/1N1k1N2/2nPn3/8/8
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-01-18 more...

21 - P1058434
Wolfgang Pauly
Deutsche Schachzeitung 1910

(8+2) C+
#3

1. f6! Lxd3,Lxf3 2. Kxd3,Kxf3 Kd1,Kf1 3. Tf1,Td1#
1. ... Lxd5 2. Tc3 Kd1 3. Tf1#
1. ... Lh7,L~ 2. Tg3 Kf1 3. Td1#
play all

more ...
comment

Keywords: Brian Stephenson Collection (43496), Symmetrical position, Minimal (b), Zugzwang-Goal
Genre: 3#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/8/8/3P1P2/2P1b1P1/3RKR2/4P3/4k3
Reprints: 54 64 Schach-Scherze 1915
Wolfgang Pauly. Challenge of a Legacy 2001
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2024-03-13 more...

22 - P1065317
Robert Rupp
Themes-64 1956

(9+7)
#3

BS Problemid: 50409
Authors: Rupp, R
Sources:
Years: 1956

SCHRECKE: 1.Kf1! (Zugzwang)
1. ... Ld7,Lc8 2.Ld3 (3.T:e4#) L:f5 3.Sf3#
1. ... Lf7,Lg8 2.Lf3 (3.T:e4#) L:d5 3.Sd3#
1. ... Sb~/Sh~ 2.Lc4/Lg4 (2021-03-03)
comment

Keywords: Brian Stephenson Collection (50409), Symmetrical position, Asymmetrical solution
Genre: 3#
FEN: 8/8/1n1pbp1n/3PkP2/1N2p2N/2P1R1P1/4B3/4K3
Reprints: B43 ASymmetrie 2013
Input: Brian Stephenson, 2004-08-12
Last update: Felber, Volker, 2021-03-02 more...

23 - P1101705
Franz Ebner
450 Gaudium 100 03/2010

(4+3)
#6

1. Th7! droht 2. Th3#
1. ... Ke3 2. Td7 droht 3. Td3#
2. ... f3 3. Td3+ Kf4 4. Td4+ Kg3 5. Sh1+ Kh3,Kh2 6. Th4#
play all

Henrik Juel: C+ Popeye 4.61 also (2022-11-20)
comment

Keywords: Asymmetrical solution, Oneliner, Miniature, Symmetrical position, Model mate
Genre: n#
Computer test: Gustav 3.1s Brute Force
FEN: 8/5R2/5B2/5r2/5p2/5k2/5N2/5K2
Input: Frank Müller, 2010-03-27
Last update: Gunter Jordan, 2022-11-20 more...

24 - P1106441
Manfred Zucker
31 Levelezesi Sakkhirado 10/1980

(2+2) C+
h#3*

* 1. ... Kc3 2. Ka6 Kc4 3. Ka5 Ta3#
1. Ka7 Kc3 2. Ka6 Kc4 3. Ka5 Ta3#
play all

(MZ515)

"Fernschach-Nachrichen"
.
Felber, Volker: steingetreuer Nachläufer unter P0573457 mit der Bedingung "Duplex" (2021-03-18)
comment

Keywords: Aristocrat, Minimal, Miniature, Symmetrical position, Asymmetrical solution, Oneliner
Genre: h#
Computer test: Popeye Windows-32Bit v4.51 (100000 KB)
FEN: 8/1k6/1r6/8/8/1R6/1K6/8
Reprints: A Feladvany 1980
1852 Ideal-Mate Encyclopedia Vol.1 1999
Input: hpr, 2010-05-30
Last update: Felber, Volker, 2021-03-18 more...

25 - P1108448
Werner Keym
Allgemeine Zeitung Mainz 1966

(6+1)
#2

0. ... Kxc4 1. Db1
0. ... Kxe6 1. Dh7
play all

Henrik Juel: C+ Popeye 4.61, except for mate trials after 2... Kd5 (2022-02-15)
comment

Keywords: Symmetrical position, No legal last move for Black, Aristocrat, Miniature
Genre: Retro
FEN: K7/1N6/4R3/3k4/2R5/5N2/8/7Q
Input: Gerd Wilts, 2010-06-23
Last update: Rainer Staudte, 2022-02-15 more...

26 - P1114060
Werner Speckmann
Schach-Echo 04/1940

(2+3)
#4

1. Dg8 Sf6! 2. Dg5+ Kh3 3. Kf3 Sf2,Sg3 4. Dxg3#
3. ... Kh2 4. Dg2#
3. ... Sd5,Se4,Sh7,Se8,Sd7 4. Dh6,Dh5#
3. ... Sg8,Sg4,Sh5 4. Dxh5#
play all

Sally: Nach 1.Dg8!(droht 2 Dg4# und 2. Dxh7#; 1. -Kh3, 2. Dg1;3.D#)
Zwar mehr nur ein Schema, die nach dem 3. weißem Zug ent-
stehende Zugzwangstellung (KD/KSS) dürfte aber nicht uninteressant sein. Nebenbei: ein einfacher Fall von Asymmetie - symmetrisch wäre als Lösung. De4? mit der Doppeldrohung 2. Dxh7# und Dxh1#.
Nr. 35 Schachmatt in 4 und mehr Zügen (Speckmann 1992). (2012-04-28)
Anton Baumann: C+ Gustav 4.2a (2023-02-21)
comment

Keywords: Aristocrat, Minimal, Symmetrical position
Genre: n#
FEN: 8/7n/8/8/2Q2K1k/8/8/7n
Input: Frank Müller, 2010-08-31
Last update: Frank Müller, 2010-08-31 more...

27 - P1124575
Bernhard Walter
Hilmar Ebert
11 Rochade Europa , p. 44, 03/1995
Garri Kasparow gewidmet

(3+1)
#13

1. Kc3 Kc1 2. Lg3 Kd1 3. Kd3 Kc1 4. Le5 Kd1 5. Lc3 Kc1 6. Sa3 Kd1 7. Sc4 Kc1 8. Ld2+ Kb1 9. Kc3 Ka2 10. Kc2 Ka1 11. Kb3 Kb1 12. Sa3+ Ka1 13. Lc3#
play all

LsS ASb13
Anton Baumann: C+ Gustav 4.1d (2020-12-05)
comment

Keywords: Miniature Collection (0070348), Rex solus (s), Aristocrat, Symmetrical position, Asymmetrical solution
Genre: n#
FEN: 1B6/8/8/1N6/1K6/8/8/1k6
Reprints: C87 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Alfred Pfeiffer, 2013-06-20 more...

28 - P1126540
Otto Ibenfeldt
Magasinet for alle 1944

(4+1)
#3

1. La4 Kxa4 2. Kc5 Ka5 3. Ta8#
1. ... Kc4 2. Td8 Kb4 3. Td4#
play all

LO-K-T ASb3 m
SCHRECKE: C+, popeye 4.87 (2023-07-17)
comment

Keywords: Miniature Collection (0291414), Symmetrical position, Asymmetrical solution, Oneliner, Rex solus (s), Flight giving sacrifice key
Genre: 3#
FEN: 1R6/8/1K6/1B6/1k6/8/1P6/8
Reprints: B33 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-07-17 more...

29 - P1127437
Nikolay S. Zinovyev
11132 Ideal-Mate Review 79 07/2000
ehrende Erwähnung
PR Eugene Albert

(4+2)
#8

1. Se3 exf3 2. Tf2 Kg1 3. Sg4 Kh1 4. Kc6 Kg1 5. Kd5 Kh1 6. Ke4 Kg1 7. Kxf3 Kh1 8. Tf1#
play all

T12d IM AS-B8
Henrik Juel: C+ Popeye 4.61 (2024-02-29)
comment

Keywords: Miniature Collection (0328461), Minimal (b), Miniature, Flight taking, Oneliner, Symmetrical position, Asymmetrical solution, Ideal mate, Corner mate
Genre: n#
FEN: 8/1K6/8/3N4/4p3/5P2/6R1/7k
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2024-02-29 more...

30 - P1130189
C. Appel
1221 Ideal-Mate Review 15 05/1985

(5+1)
#4

1. Le3 Kb4 2. Kb2 Ka5 3. Lb5 Kb4 4. Sec6#
play all

S3b ASc4 IM
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-09-05)
comment

Keywords: Miniature Collection (0328000), Rex solus (s), Symmetrical position, Asymmetrical solution
Genre: n#
FEN: 8/N3N3/2B5/8/2k5/8/2K5/2B5
Reprints: C74 ASymmetrie 2013
Input: Zuncke/Bruder, 2010-09-11
Last update: Alfred Pfeiffer, 2013-06-20 more...

31 - P1131127
Bengt Rudolf Giöbel
147 Svenska Dagbladet 28/10/1923

(3+3)
#2

1. Dh3! (Zugzwang)
1. ... Sd1,Sb2~ 2. Dd3#
1. ... f1=D,f1=T,f1=L 2. De3#
1. ... f1=S 2. Dg2#
play all

B7b2DD0 AS-2
SCHRECKE: C+, popeye 4.85 (2021-05-16)
Teppo Mänttä: Reprints. Fröberg/Hultberg: "Svenska Miniatyrer i urval" (Uppsala/Copenhagen) 1978 and
Giöbel: "Problem och profiler" (Uppsala) 1984. (2021-09-18)
comment

Keywords: Miniature Collection (0011687), Oneliner, Symmetrical position, Asymmetrical solution, Miniature
Genre: 2#
FEN: 8/8/8/8/8/8/1nKBkpQ1/8
Reprints: 17 Bote von der Ybbs 07/02/1930
75 Kurioses Schach 1975
A12 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Mario Richter, 2021-05-16 more...

32 - P1132254
Jan Kotrc
845 Oesterreichische Lesehalle 01/1888

(2+4)
#3

1. Dg7! droht 2. Kc2 ... 3. Da7#
sowie 2. Kb3 ... 3. Dg1#
1. ... Ka2 2. Dg2+ Kb1,Ka1 3. Db2#
2. ... Ka3 3. Da8#
1. ... Kb1 2. Db7+ Ka2,Ka1 3. Db2#
2. ... Kc1 3. Dh1#
1. ... f3 2. Kc2 ... 3. Da7#
1. ... Sc4 2. Kb3+ Kb1 3. Dg1#
2. ... Sb2 3. Dxb2#
2. ... Se5 3. Dg1#
1. ... Sd3 2. Kc2+ Ka2 3. Da7#
2. ... Sb2 3. Dxb2#
2. ... Se5 3. Da7#
1. ... Sf3 2. Db7 ... 3. Db2#
1. ... Sc6 2. Dg2 ... 3. Db2#
play all

A12-23+ e412 BL352
Henrik Juel: double threat (2023-10-20)
comment

Keywords: Miniature Collection (0046866), Symmetrical position
Genre: 3#
FEN: 8/8/3p1Q2/4n3/5p2/2K5/8/k7
Reprints: 557 Wiener Hausfrauen-Zeitung 33, p. 299, 18/08/1889
629 Wiener Hausfrauen-Zeitung 2, p. 15, 11/01/1891
Besedy lidu 1894
352 Schachminiaturen 1902
419 777 Chess Miniatures in Three 1908
7 Idun 02/06/1918
33 Österreichische Schachrundschau 12/1923
3 Arbeiter-Schachzeitung (Chemnitz) 1, p. 15, 01/1925
Input: Felber, Volker, 2010-09-11
Last update: Felber, Volker, 2023-10-20 more...

33 - P1132755
Martin Wolfgang Hoffmann
Variationen über zwei dreizügige Mattfü 1976

(4+1) C+
#3

1. c3!
1. ... Ka5 2. Kc5 Ka6 3. Ta4#
1. ... Ka3 2. Te2 Ka4 3. Ta2#
play all

TX3 AS-3
Rosalie Fay: Full name of source: Variationen über zwei dreizügige Mattführungen mit dem Turm, 1976

Tries: 1 Te2? A zz Ka3a 2 c3 zz Ka4 3 Ta2#, but 1 ... Ka5! b;

1 Kc5+? B Ka3! a

Solution: 1 c3 zz
Ka3 a 2 Te2 A zz Ka4 3 Ta2#;
1 ... Ka5 b 2 Kc5 B zz Ka6 3 Ta4# (2020-09-28)
more ...
comment

Keywords: Miniature Collection (0340714), Symmetrical position, Banny Theme
Genre: 3#
Computer test: Popeye 4.85
FEN: 8/8/2P5/8/k1K1R3/8/2P5/8
Reprints: B51 ASymmetrie 2013
Input: Zuncke/Bruder, 2010-09-11
Last update: James Malcom, 2020-09-28 more...

34 - P1139236
Gunter Jordan
69 Die Schwalbe 238, p. 193, 08/2009
Klaus-Peter-Zuncke-Gedenkturnier
3. Preis
PR Martin Minski

(4+3)
#4
2.1...

1. Ld5-f7+!
1. Ld5-c6+!
play all

Gunter Jordan: Preisrichter Martin Minski: "„Gedenkkreuz“ mit thematischer Doppelsetzung in Zweispännerform und das als Miniatur! Die thematische Verführung 1.Le6+? Ke4 2.Tf7 Kf3 3.Ld5+ Kg4 4.Tg7+ Kh~ scheitert daran, dass der sK auf der rechten Seite zu viel Platz besitzt. Deshalb besser: 1.Lc6+! Kc4 2.Tb7 (droht 3.Txb5 nebst 4.Tb4#) Kb3 3.Ld5+ Ka4 4.Ta7# mit Mustermatt. Die zweite asymmetrische Lösung lautet: 1.Lf7+ Ke4 2.Ke2 b4 3.Lh5 (droht 4.Lf3#) f4 4.Lg6#. Dieser Läufertanz ist auf der linken Seite aus Platzgründen nicht möglich: 1.Lb7? Kc4 2.Kc2 f4 3.L?." (2012-03-17)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-02-01)
comment

Keywords: Miniature Collection (0356029), Symmetrical position, Asymmetrical solution, Miniature, Checking key, Symbol problem (Kreuz)
Genre: n#
FEN: 8/3R4/8/1p1B1p2/3k4/3N4/3K4/8
Reprints: C108 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-01-10 more...

35 - P1141367
Frank Fiedler
Schwalbe-Tagung 1996

(4+1)
#4

1. Sc5+ Kc6 2. Kc4 Kb6 3. Lb8 Ka5,Kc6 4. Lc7,Td6#
1. ... Ke8,Kd8,Kc8 2. Tf5 ... 3. Tf8#
play all

ASd4 A10TL1
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-06-02)
comment

Keywords: Miniature Collection (0075796), Symmetrical position, Asymmetrical solution, Rex solus (s), Aristocrat, Oneliner
Genre: n#
FEN: 8/3k4/3B4/3R4/3K4/3N4/8/8
Input: Felber, Volker, 2010-09-11
Last update: Alfred Pfeiffer, 2014-03-26 more...

36 - P1144237
Mrs. W. J. Baird
492 The Chess Amateur 04/1924

(5+1)
#3

1. Sf2 Kf4 2. Tc3 Kf5 3. Tf3#
play all

T12T AS/3

Sally (2018-12-27): Asymmetrie : der zur (hier: schrägen) Symmetrieachse analoge Zug des [Sh7] (das wäre 1. [Si5]) ist wegen Brettüberschreitung nicht möglich.

in der Miniature Collection auch gespiegelt (wKd2-sKf4 als (0049342)
SCHRECKE: C+, popeye 4.85 (2021-05-16)
comment

Keywords: Miniature Collection (0329456), Symmetrical position, Asymmetrical solution, Rex solus (s), Aristocrat, Miniature
Genre: 3#
FEN: 2R5/3K3N/4R3/5k2/8/3N4/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Mario Richter, 2021-05-16 more...

37 - P1146491
Jan Knöppel
Springaren 08/1950

(6+1)
#3

1. 0-0 Kxe7 2. Sb7 Ke8 3. Tbe1#
play all

E2-b3 ASd3
SCHRECKE: C+, popeye 4.87 (2021-12-28)
comment

Keywords: Miniature Collection (0051782), Rex solus (s), Symmetrical position, Asymmetrical solution, Castling, Castling key
Genre: 3#
FEN: 3NkN2/4P3/8/8/8/8/8/1R2K2R
Reprints: B38 ASymmetrie 2013
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2021-12-28 more...

38 - P1147832
Godehard Murkisch
23b Schachkomponist Günther Jahn 04/2005

(3+3) C+
#4

1. e8=D+! Tde5 2. Dc6+ Td5 3. De6+
1. ... Tfe5 2. Dg6+ Tf5 3. De6+
play all

H16
more ...
comment

Keywords: Miniature Collection (0349522), Miniature, Symmetrical position, Promotion key, Checking key
Genre: n#
Computer test: SCHRECKE: Gustav 4.2e
FEN: 8/4P3/8/3r1r2/4k3/4P3/4K3/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Dieter Berlin, 2023-10-06 more...

39 - P1148947
Godehard Murkisch
23c Schachkomponist Günther Jahn 04/2005

(3+3) C+
#4

1. e8=D+ Tde6 2. Db8+ Td6 3. Db5+ Ke6 4. De8#
3. ... Td5 4. Dxd5#
1. ... Tfe6 2. Dh8+ Tf6 3. Dh5+ Ke6 4. De8#
3. ... Tf5 4. Dxf5
play all

mm Schema
more ...
comment

Keywords: Miniature Collection (0349521), Checking key, Echo, Epaulettenmatt, Switchback, Symmetrical position, Promotion (D), Symmetrical solution, Symmetrical end position, Miniature
Genre: n#
Computer test: Gustav 4.2a, Brute Force
FEN: 8/4P3/3r1r2/4k3/4P3/4K3/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2023-10-06 more...

40 - P1152027
August Jensen
246 Springaren 36 03/1989

(6+1)
#3

1. Sa4 Ka1 2. Sc2+ Ka2 3. Tb2#
play all

T22S AS/3 m
SCHRECKE: C+, popeye 4.87 (2022-12-08)
comment

Keywords: Miniature Collection (0324724), Symmetrical position, Asymmetrical solution
Genre: 3#
FEN: 8/8/4K3/1PN5/3N4/1R1P4/k7/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-12-08 more...

41 - P1152130
Manfred Zucker
10511 Die Schwalbe 274, p. 55, 06/1956

(4+3) C+
#4

1. Tc1 Lc7 2. Tg1 Lg3 3. Tg2 Lb8,L~ 4. Tg8#
play all

Duplicate Diagram: P1258715

(MZ1254)

vf: Franck Larose, 04.1987, Europe Echecs = P1258715
.
Stefan Felber: Steingetreuer Vorläufer von W. Pauly (PDB 1149266) (2015-11-30)
Henrik Juel: C+ Popeye 4.61 (2021-02-22)
Henrik Juel: The symmetric try fails by board asymmetry:
1.Tg1 Lg7 2.Tc1 Lc3 3.Tc2 La5! 4.Tc8+ Ld8 (2021-02-22)
comment

Keywords: Miniature Collection (0292510), Oneliner, Symmetrical position, Asymmetrical solution, Miniature
Genre: n#
FEN: 4k3/4B3/4K3/4b3/8/4p3/4P3/4R3
Input: Felber, Volker, 2010-09-12
Last update: Felber, Volker, 2021-05-02 more...

42 - P1152324
Klaus-Peter Zuncke
3066 Land og Folk 02/09/1978

(3+2) C+
#3

1. Tf7? La5!

1. Td7! droht 2. Te7+ Kd8 3. Tf8#
1. ... Lb4 2. Txb4 Kf8 3. Tb8#
1. ... Lh4 2. Txh4 Kf8 3. Th8#
play all

ASd3
Dieter Berlin: Der Nachdruck 'Sächsische Zeitung' bezieht sich auf das Heft 'Preisbericht Informalturnier 1982',
die Aufgabe findet man auf S. 32 im Anhang. (2022-10-28)
more ...
comment

Keywords: Miniature Collection (0338445), Aristocrat, Symmetrical position, Asymmetrical solution, Minimal, Miniature
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 4k3/8/4K3/8/3R1R2/8/8/4b3
Reprints: 6 Sächsische Zeitung , p. 32, 1982
C112A ASymmetrie 2013
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2022-10-29 more...

43 - P1154084
Klaus-Peter Zuncke
2358 Freie Presse (Chemnitz) 07/05/1982
2. Preis

(4+3)
#7

1. Lc7 Kf6 2. Ld8+ Kg6 3. Tbg5+ Dxg5 4. Txg5+ Kh6 5. Kf7 e3 6. Tg4 Kh5 7. Th4#
play all

ASd7
Henrik Juel: late dual 2... Kg7 3.Tbg5+ Dxg5 4.Txg5+ Kh7 5.Kf7,Tg4 (2022-08-29)
comment

Keywords: Miniature Collection (0292553), Symmetrical position, Asymmetrical solution, Symbol problem (Kreuz)
Genre: n#
FEN: 4K3/8/4k3/1R2B2R/4p3/4q3/8/8
Reprints: C68 ASymmetrie 2013
Input: Felber, Volker, 2010-09-12
Last update: Gunter Jordan, 2022-08-29 more...

44 - P1158239
Frank W. Martindale
29 Detroit Free Press 13/01/1876

(3+3)
#3

1. Le1 Kg5 2. Dh7 Ld8 3. Lh4#
1. ... Ke5 2. Dd7 Lh8 3. Lc3#
play all

L10 ASc3
Frank Müller: Im Original stehen die Steine in der c-Linie !! (2016-01-23)
SCHRECKE: C+, popeye 4.85 (2021-05-19)
comment

Keywords: Miniature Collection (0321725), Oneliner, Symmetrical position, Asymmetrical solution
Genre: 3#
FEN: 8/5Q2/5b2/5k2/5p2/5K2/5B2/8
Reprints: B4 ASymmetrie 2013
Input: Zuncke/Bruder, 2010-09-12
Last update: Alfred Pfeiffer, 2016-01-23 more...

45 - P1160231
August Jensen
252 Springaren 37 06/1989

(3+1)
#2

1. Ke6? ... Kg8!;
1. Kg6? ... Ke8!;
1. Dc7! (Zugzwang) ... Ke8/Kg8 2. De7/Dg7
play all

A12DD4 ASc2 mm
SCHRECKE: C+, popeye 4.87 (2022-12-08)
comment

Keywords: Miniature Collection (0247216), Symmetrical position, Asymmetrical solution
Genre: 2#
FEN: 5k2/8/5P2/5K2/5Q2/8/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-12-08 more...

46 - P1162238
? ?
Chess Player's Chronicle 16/09/1885

(4+1)
#3

1. Da1 Kg5 2. Dh8 Kf4 3. Df6#
play all

Duplicate Diagram: P1293935

Qe ASc3
vf: Valerian Onitiu, 07.05.1933, Allgemeine Zeitung Chemnitz
Alfred Pfeiffer: horizontal gespiegelt: W. Heinrich, Der Feierabend 1961 =P1136449 (2013-06-13)
athulin: From the Chess Player's Chronicle 1885 tourney, entered under the
motto "Garvest II". Tourney may have been abandoned, as no report has been
found, so motto identity was never revealed. (2022-11-09)
SCHRECKE: C+, popeye 4.87 (2022-11-09)
comment

Keywords: Miniature Collection (0321861), Oneliner, Symmetrical position
Genre: 3#
FEN: 8/5K2/8/5k2/8/5P2/5P2/5Q2
Reprints: B6 ASymmetrie 2013
Input: Zuncke/Bruder, 2010-09-12
Last update: Alfred Pfeiffer, 2013-06-13 more...

47 - P1162270
Moisey S. Rosenthal
694 Freie Presse (Chemnitz) 28/04/1967

(3+3)
#2*

* 1. ... Se4 2. Dh3#
* 1. ... Sg4 2. Dd3#

1. De2? droht 2. De6#
1. ... Se4 2. Di2#???

1. Dg2! droht 2. Dg6#
1. ... f3 2. Dxf3#
1. ... Sg4 2. Dc2#
play all

ASc2
a1=a2, P. Wetzel, 1971, La Cle = P1163220
SCHRECKE: C+, popeye 4.87 (2023-03-09)
comment

Keywords: Miniature Collection (0025905), Symmetrical position, Asymmetrical solution, Oneliner
Genre: 2#
FEN: 8/5K2/5B2/5k2/5p2/5Q2/5n2/8
Reprints: A30 ASymmetrie 2013
Input: Felber, Volker, 2010-09-12
Last update: Felber, Volker, 2014-05-16 more...

48 - P1165393
Werner Speckmann
The Chess Review 1939
1. ehrende Erwähnung
5. Int. Miniaturenturnier

(4+2) C+
#3

1. Th8! g6 2. Sh6 Kh5 3. Sf7#
1. ... Kg6 2. Se7+ Kg5 3. Tf5#
play all

ASb3 SA2
vf: Nguyen VoVan, 1991, La Hoja de Ajedrez;
diese Aufgabe geistert auch als M. Vyordmann herum. Das ist aber Speckmann, siehe DSZ 03.1965, S. 108
more ...
comment

Keywords: Miniature Collection (0059034), Symmetrical position, Asymmetrical solution, Minimal, Miniature, Indian
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 6N1/6p1/8/6k1/8/5RKR/8/8
Reprints: Deutsche Schachzeitung 3, p. 108, 03/1965
1142 Beispiele zur Ideengeschichte des Schachproblems , p. 232, 1982
B30 ASymmetrie 2013
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-05-05 more...

49 - P1167069
Herbert Hultberg
9313 Tidskrift för Schack 11/1947

(3+2) C+
#3

1. Th6! gxh6+ 2. Kxh6 Kh8 3. Tf8#
1. ... g6 2. Txg6+ Kh8 3. Th1#
play all

E7d3 ASb3 mm
vf: Tuma, 01.02.1986, Pruboj;
Eligiusz Zimmer, 09.2000, Rochade Europa
more ...
comment

Keywords: Miniature Collection (0059680), Symmetrical position, Asymmetrical solution, Minimal, Miniature, Sacrifice key (T)
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 6k1/6p1/8/6K1/8/8/8/5R1R
Reprints: B26A ASymmetrie 2013
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-01-08 more...

50 - P1167447
M. Undritz
253 Baltische Schachblätter 08/1902

(3+4)
#3

1. Dd7 h6+ 2. Kxh6 Kf8 3. Dd8#
1. ... Kg7 2. Le5+ Kf8 3. Dd8#
play all

ASb3 m
SCHRECKE: 1. ... f5 2.De8+ Kg7 3.Le5# oder 2.Kf6 (Dual) (2020-10-12)
comment

Keywords: Miniature Collection (0323441), Symmetrical position
Genre: 3#
FEN: 6k1/5p1p/6p1/6K1/6Q1/6B1/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: A.Buchanan, 2020-10-13 more...

51 - P1167540
August Jensen
297 Springaren 40 03/1990

(3+4)
#3

1. Sh4

ASb3 SfS m
Henrik Juel: C+ Popeye 4.61 (except for double mate threat) (2022-12-08)
Henrik Juel: 1.Sh4 thr. 2.Sh5 thr. 3.Sxh6,Se7# (2022-12-08)
comment

Keywords: Miniature Collection (0324736), Symmetrical position, Asymmetrical solution
Genre: 3#
FEN: 6k1/6P1/5pKp/8/8/8/6N1/6b1
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-12-08 more...

52 - P1168739
Wjatscheslaw A. Lebedew
Sbudinne 1991

(5+2)
#4

1. ... Kxg4 2. Kxg6! Kxg3 3. Th5 Kg2 4. Tg5+ Kh2,Kh1,Kh3 5. Th7#
play all

H27 RA4 ASb3 m

s.a. P1126519
Henrik Juel: C+ Popeye 4.61 (2021-01-23)
comment

Keywords: Miniature Collection (0344445), No legal last move for Black, Symmetrical position, Minimal, Miniature
Genre: n#, Retro
FEN: 8/5RKR/6p1/6k1/6P1/6P1/8/8
Reprints: 69 Jitvesha schachova Miniatjura [Davydjuk] 1992
Input: Zuncke/Bruder, 2010-09-12
Last update: James Malcom, 2021-01-23 more...

53 - P1181239
Thomas R. Dawson
The Chess Amateur 12/1923
Asymmetrie-Turnier 1924
1. Preis

(15+10) C+
s#5

1. gxf6ep+ Kxe8 2. Dg6+ hxg6 3. cxd8=S ... 4. f7+ Ke7 5. Sxg6+ Sxg6#
play all

Schwarz hat zuletzt f7-f5 gezogen, da d7-d5 an der retrograden Einsperrung des Lc8 scheitert.

Henrik Juel: C+ Popeye 4.61 after analysis
Analysis
White is missing one man, so last move was not a pawn capture
White pawns captured all six missing black men, so last move was not d7-d5
Obviously last move was not made by Ke7 or Sd8f8, so last move was f7-f5 legitimizing the ep key (2020-11-02)
comment

Keywords: Asymmetrical solution, En passant as key, Symmetrical position, Promotion (S)
Genre: Retro, s#
Computer test: C+ Popeye 4.61 after analysis
FEN: 1NRnBnRN/1pP1k1Pp/4p3/2PpKpP1/2pPQPp1/8/2P3P1/8
Reprints: 87 Asymmetry 1927
199 Mat Plus Review 01-06/2010
H2 ASymmetrie 2013
Input: Frank Müller, 2010-11-25
Last update: A.Buchanan, 2020-11-03 more...

54 - P1188453
Jan A. Rusek
544 Schachmatt 03/09/1947

(6+4) C+
s#5

1. Kh8! h6,f6 2. g8=L f6,h6 3. Txh6+ Kxh6 4. Txf6+ Lxf6+ 5. Dg7+ Lxg7#
play all

SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-11-13)
comment

Keywords: Asymmetrical solution, Symmetrical position
Genre: s#
FEN: 6K1/5pPp/6k1/5RbR/6Q1/6N1/8/8
Reprints: F21 ASymmetrie 2013
Input: Frank Müller, 2011-02-27
Last update: Marcin Banaszek, 2021-11-17 more...

55 - P1198917
Franz Ebner
482 Gaudium 102 08/2010

(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
play all

"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...

56 - P1204422
Anatoli G. Jepifanow
14639 Ideal-Mate Review 01-03/2005

(3+1)
h#3
Vertikalzylinder

1. Ke6 Sd4+ 2. Kf7 Se6 3. Kg8 Sh6#
play all

paul: checked by Jacobi (2021-10-16)
more ...
comment

Keywords: Indian, Vertical Cylinder, Aristocrat, Miniature, Symmetrical position, Asymmetrical solution
Genre: Fairies
FEN: K7/1N6/2N5/3k4/8/8/8/8
Input: Hans Gruber, 2011-10-09
Last update: Alfred Pfeiffer, 2021-10-19 more...

57 - P1214335
Jan A. Rusek
1837 Springaren 02/1953

(5+3) C+
s#4

1. Sd6! b5 2. Tc4 bxc4 3. Ta1 c3 4. Lc1 c2#
play all

SCHRECKE: C+, Gustav 4.2a, Brute Force (2021-12-06)
comment

Keywords: Asymmetrical solution, Symmetrical position
Genre: s#
FEN: 8/1N6/1p6/8/1p6/1k6/RBR5/1K6
Input: Frank Müller, 2011-10-11
Last update: Marcin Banaszek, 2021-12-14 more...

58 - P1217923
Heinrich Friedrich Ludwig Meyer
181 Brüderschaft 43, p. 197, 23/10/1886

(7+5) C+
#2

1. e8=S! Kf5 2. Sxd6#
1. ... Kd5 2. Sxf6#
1. ... d5 2. Sd6#
1. ... f5 2. Sf6#
play all

more ...
comment

Keywords: under-promotion key (S), Symmetrical position, Zugzwang-Goal, Symmetrical solution
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: 8/4P3/3ppp2/1P2p2P/4k3/1P2B2P/4K3/8
Input: Felber, Volker, 2011-11-08
Last update: Dieter Berlin, 2024-03-11 more...

59 - P1229689
Luigi Ceriani
32 personaggi e 1 autore 1955
nach W.Meyer

(7+5)
#3

1. De1! Kd8 2. Da5
1. ... Kf8 2. Da1
play all

Vgl. P1277960

Henrik Juel: double threat 2.Da1,Da5 and duals after 1... c5,c6,g5,g6 (2023-07-05)
comment

Keywords: Symmetrical position, Homebase (s), Variation Asymmetry, corner to corner (D), Model mate
Genre: 3#
FEN: 4k3/1pp3pp/4K3/8/4P3/3P1P2/2P1Q1P1/8
Reprints: 69 Kurioses Schach 1975
Input: Mario Richter, 2012-01-06
Last update: Gunter Jordan, 2023-07-05 more...

60 - P1229697
Jan Hartong
Bulletin Ouvrier des Echecs 12/1948
2. Lob im Zwillingsturnier

(4+3)
#2
a) Diagramm
b) alles eine Spalte nach rechts

a) 1. Dh4! droht 2. Dh8#
1. ... d6,d5 2. Da4#
1. ... f6,f5 2. Dh5#

b) 1. Da1! droht 2. Da8#
1. ... e6,e5 2. Da3#
1. ... g6,g5 2. Dh8#
play all

Duplicate Diagram: P1148644, P1148644

a) vollständig vorweggenommen durch P1148644
SCHRECKE: a)+b): C+, popeye 4.87
Die FEN ist Stellung b) (2022-09-21)
comment

Keywords: Symmetrical position, anticipated (P1148644), Asymmetrical solution, Miniature
Genre: 2#
FEN: 5k2/4pPp1/8/8/8/5R2/5K2/5Q2
Reprints: FIDE Album 1945-1955 1964
71,72 Kurioses Schach 1975
2 El Ajedrez (revista técnica de ajedrez) 0 11/1979
A27 ASymmetrie 2013
Input: Mario Richter, 2012-01-07
Last update: Mario Richter, 2022-09-20 more...

61 - P1239714
Frank Fiedler
4621 Freie Presse (Chemnitz) 14/12/2007
Den Schachfreunden vom HSV Eintracht Seiffen und den das Schach sponsorenden Seiffener Handwerkskünstlern gewidmet.

(5+2)
#5

1. Sa3! Kd2 2. Scxe2 Kd1 3. Kd3 Ke1 4. Sc2+ Kd1 5. Sf2#
2. ... Ke1 3. Ke3 Kd1 4. Sf2+ Ke1 5. Sc2#
play all

SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-06-09)
comment

Keywords: Obvious promotion, Symmetrical position, Symbol problem (Schwibbogen), Asymmetrical solution
Genre: n#
FEN: 8/8/8/8/4K3/2N3N1/4p3/1N2k2N
Input: Felber, Volker, 2012-05-26
Last update: Alfred Pfeiffer, 2017-08-02 more...

62 - P1240448
Jorma Pitkänen
Ilta-Sanomat 1997
Dem Match Kasparow-Deep Blue gewidmet

(15+4) C+
s#4

1. Dh2 exf6 2. Tg6 hxg6 3. Dh3+ f5+ 4. Dxf5+ gxf5#
1. Dh2 exd6 2. Tc6 bxc6 3. Da2+ d5+ 4. Dxd5+ cxd5#
play all

Spätere Versionen siehe P1240450, P1240451, P1240452 und P1240453.

Walter Lindenthal: Illegal (letzer s Zug?) (2023-08-28)
SCHRECKE: Der sK kann zuletzt von d7 oder f7 gekommen sein. (2023-08-28)
Gerald Ettl: So nebenbei habe ich mich gefragt, was die Widmung mit dem s# zu tun hat. Wenn es wenigstens eine Studie gewesen waere haette ich die Widmung einigermassen verstanden. Aber so? (2023-08-29)
comment

Keywords: Asymmetrical solution, Symmetrical position, Obvious promotion
Genre: s#
Computer test: Popeye WINDOWS-32Bit-Version 3. 73 (2048 KB)
FEN: 4B3/1p2p2p/1P1PkP1P/4P3/3BKB2/3NPN2/4Q3/2R3R1
Reprints: A harmonie 108, p. 2011, 12/2011
F38 ASymmetrie 2013
Input: Frank Müller, 2012-06-02
Last update: Alfred Pfeiffer, 2013-06-28 more...

63 - P1240452
Jorma Pitkänen
Ilta-Sanomat 1997
Version Bernd Schwarzkopf 2012

(15+4) C+
s#4

1. Sd6 exd6 2. Tc6 bxc6 3. Da2+ d5+ 4. Dxd5+ cxd5#
play all

Urversion siehe P1240448.

Walter Lindenthal: Illegal (letzer s Zug?) (2023-08-28)
SCHRECKE: Der sK kann zuletzt von d7 oder f7 gekommen sein. (2023-08-28)
comment

Keywords: Asymmetrical solution, Symmetrical position
Genre: s#
Computer test: Popeye WINDOWS-32Bit V4.37 (379720 KB)
FEN: 2N1B1N1/1p2p2p/1P2k2P/4P3/3PKP2/3PPP2/4Q3/2R3R1
Reprints: D harmonie 109, p. 211, 05/2012
Input: Frank Müller, 2012-06-02
Last update: Frank Müller, 2012-06-02 more...

64 - P1243966
Frank Richter
1107 The Ural's Problemist 10-12/2011
3. ehrende Erwähnung

(11+3) C+
s#11

1. Sf4 exf4 2. gxf4 e5 3. f5 Kf4 4. Tg6 Ke3 5. Ta6 Kf4 6. Ta1 Ke3 7. Td1 Kf4 8. Tg4+ Ke3 9. f4 exf4 10. Lg2 f3 11. Lf1 f2#
play all

Anton Baumann: C+ Gustav 4.2a (2022-01-19)
comment

Keywords: Asymmetrical solution, Stalemate dissolution, Symmetrical position
Genre: s#
FEN: 8/8/3RpR2/4p3/1P2B2P/2PPkPP1/4N3/4K3
Input: Frank Müller, 2012-07-05
Last update: Marcin Banaszek, 2022-01-27 more...

65 - P1256398
Arnold Beine
15063 Die Schwalbe 252 12/2011
Martin Minski und Michael Schlosser gewidmet

(4+2)
h#14
b) alles ein Feld nach rechts (a1 = b1)
Doppellängstzüger; KöKo; Circe Rex incl.

a) 1. Nf3 Kf6 2. Nb5 g6 3. Nf7 Ke7 4. Nb5 Kd6 5. Nf3 Kd5 6. Nb5 Ke6 7. Nf7 gxf7[+sNf1] 8. Nxe3[+wBe2] Kf5 9. Nf1 e4 10. Nd5 Ke6 11. Ne7 Kd7 12. Nd5 Ke8 13. Nb4 f8=D 14. Nf6 Dd6#
b) 1. Ne3 Ke6 2. Nxd5[+wBd2] d4 3. Nf6 Kf7 4. Ng4 fxg4[+sNg1] 5. Ne5 gxf5[+sKe8] 6. Ng6 hxg6[+sNg1] 7. Ne5 Ke6 8. Nf7 gxf7[+sNf1] 9. Nd5 Kd7+ 10. Kf8 Ke8 11. Nf4 f6 12. Nd8 Kd7 13. Nc6 Ke8 14. Ng8 fxg8=D[+sNg1]#
play all

sSU ,= ,Nachtreiter
SCHRECKE: a)+b): C+, popeye 4.87 (2022-12-18)
comment

Keywords: Circe, Köko, Maximummer (Doppel-), Symmetrical position, Asymmetrical solution
Pieces:

= Nightrider (N)
Genre: Fairies
FEN: 8/4K3/8/2P1k1P1/8/4P3/8/4*2n3
Input: Gerd Wilts, 2012-12-13
Last update: Arnold Beine, 2022-12-18 more...

66 - P1260390
Anatoly N. Skripnik
C11016 The Problemist 05/2012

(2+3)
#6

1. Kc6 Kb8 2. Kb6 Sd6 3. Db4 Sc8+ 4. Kc6+ Sb6 5. Dxb6+ Kc8 6. Dc7#
5. ... Ka8 6. Db7#
1. ... Ka7 2. Kc7 Sc5 3. De7 usw.
play all

Anton Baumann: C+ Gustav 4.2a (2023-02-21)
comment

Keywords: Aristocrat, Minimal, Symmetrical position, Symmetrical solution, Oneliner
Genre: n#
FEN: k7/1n6/8/3K4/4Q3/5n2/8/8
Input: Frank Müller, 2013-01-20
Last update: Felber, Volker, 2013-05-24 more...

67 - P1262943
Ralf Krätschmer
Godehard Murkisch
1349 Stern 24/01/1991

(8+6)
#4

1. Td6? Da2!
1. Th6! droht 2. Tf6#
1. ... gxh4 2. Th5+ Sg5+ 3. Txg5+ Kxg5 4. Txe5#
play all

Henrik Juel: C+ Popeye 4.61 (2021-12-09)
comment

Keywords: Symmetrical position
Genre: n#
FEN: 5B2/5K2/8/3RpkpR/3P1p1P/3P1n1P/5q2/8
Input: Felber, Volker, 2013-02-21
Last update: Dieter Berlin, 2021-12-09 more...

68 - P1268545
Herbert Hultberg
Springaren 12/1991

(6+11) C+
s#3

1. b7? Sc7 2. b8=T Sa6!

1. h7! Sg7! 2. h8=T Sh5 3. Txh5 f3#
play all

more ...
comment

Keywords: Asymmetrical solution, Grab, Symmetrical position, under-promotion (wT), Pawn mate
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 4n3/8/1P1ppp1P/3prp2/3pkp2/4p3/4K3/3NRN2
Reprints: F34 ASymmetrie 2013
Input: Frank Müller, 2013-04-26
Last update: Dieter Berlin, 2024-02-26 more...

69 - P1271907
Torsten Linss
F50 ASymmetrie 2013

(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#
play all

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...

70 - P1273567
Martin Minski
G35A ASymmetrie 2013

(3+5)
h=3

1. Dh1! g8=T 2. Kg1 Tf8 3. g2 Txf2=
play all

Anton Baumann: C+ Gustav 4.1d (2021-11-17)
comment

Keywords: Symmetrical position, Asymmetrical solution
Genre: Fairies
FEN: 8/6P1/6K1/8/6N1/6p1/5pkp/6q1
Input: Alfred Pfeiffer, 2013-06-29
Last update: Alfred Pfeiffer, 2014-11-07 more...

71 - P1276669
Christian Poisson
72 Ceskoslovensky Sach 10/2010

(3+1)
#10

1. Le3! Kb2 2. Kc4 Ka3 3. Sd3 Ka4 4. Ld2 Ka3 5. Lb4+ Ka2 6. Kc3 Kb1 7. Kb3 Ka1 8. Kc2 Ka2 9. Sc1+ Ka1 10. Lc3#
play all

Anton Baumann: C+ Gustav 4.2a (2021-12-06)
comment

Keywords: Aristocrat, Oneliner, Symmetrical position
Genre: n#
FEN: 8/8/1B6/1K6/1N6/8/8/1k6
Input: Rainer Staudte, 2013-08-22
Last update: Alfred Pfeiffer, 2013-08-22 more...

72 - P1291637
Wolfgang Pauly
Deutsche Schachblätter 1913

(3+7)
#3

1. Dg1! droht 2. Dg8#
1. ... d5 2. Da7 ... 3. Dd7#,Db6#
play all

SCHRECKE: 1. ... f5 2.Dg6+,Dg7 (Dual) (2021-05-14)
comment

Keywords: Symmetrical position
Genre: 3#
FEN: 4K3/4b3/3pkp2/4p3/4P3/3p1p2/8/4Q3
Reprints: 3a Allgemeine Zeitung Chemnitz 02/12/1928
9 Bote von der Ybbs 08/11/1929
Input: Felber, Volker, 2014-11-29
Last update: Mario Richter, 2021-05-14 more...

73 - P1291919
Walter Schlüter
Aachener Anzeiger 1928
Dr. Lasker zum 60. Geburtstag gewidmet

(8+8) C+
s#4

1. Txe3+! dxe3 2. Lxc3 d4 3. Lh2 dxc3 4. Le5 e2#
play all

SCHRECKE: C+, Gustav 4.2a, Brute Force (2021-12-24)
comment

Keywords: Symmetrical position, Asymmetrical solution
Genre: s#
FEN: 8/8/3N4/p2p2p1/P2p2P1/R1pkp1R1/3p4/B2K2B1
Reprints: 7c Allgemeine Zeitung Chemnitz 06/01/1929
1478 Allgemeine Zeitung Chemnitz 25/03/1934
Input: Felber, Volker, 2014-12-03
Last update: Marcin Banaszek, 2021-12-30 more...

74 - P1295394
Denisson Nixon
9636 The Fairy Chess Review 08/1953

(0+1+3)
h#3
Gitterschach

1. Kd6 Df6+ 2. Ke5 Sc3 3. d2 d4#
play all

Wechsel der Symmetrieachse

SCHRECKE: C+, popeye 4.87 (2021-08-03)
comment

Keywords: Grid Chess, Symmetrical end position, Symmetrical position
Genre: Fairies
FEN: 8/3k4/8/3-N4/3-Q4/3-P4/8/8
Input: Frank Müller, 2015-01-18
Last update: Alfred Pfeiffer, 2015-01-19 more...

75 - P1320829
Wolfgang Pauly

(3+4) C+
h#3
b) sBe6 nach e4

a) 1. Kd3 Ld6 2. Kc2 Lg6+ 3. Kc1 La3#
b) 1. Kf3 Lg3 2. Kg4 Kf2 3. Kh3 Ld7#
play all

Quelle unbekannt (v), Komponiert 1932. Das Original war um 180 Grad gedreht und benötigte zwei zusätzliche sBB.
Felber, Volker: vergleiche P1001738 und P1001739 (2016-06-01)
Yuri Bilokin: Version: -bPe6 4B3/8/8/1p2B2p/8/4k3/8/4K3 (3+3) h#3 2.1... 1.Kd3 Bd6 2.Kc2 Bg6+ 3.Kc1 Ba3# (MM)
1.Kf3 Bg3 2.Kg4 Kf2 3.Kh3 Bd7# (MM)
Asymmetry, BK moves only × 2, Exchange of functions (wBe5/wBe8, Guard / Mate) (2021-11-16)
more ...
comment

Keywords: Model mate, Symmetrical position, Asymmetrical solution
Genre: h#
FEN: 4B3/8/4p3/1p2B2p/8/4k3/8/4K3
Reprints: E13 ASymmetrie , p. 305, 2013
32 idee & form 128, p. 4311, 10/2015
Input: Felber, Volker, 2016-06-01
Last update: Alfred Pfeiffer, 2016-06-02 more...

76 - P1322874
Jean Louis Preti
IV-2 Recueil d'Études Progressives [Preti] 1856

(4+3)
Gewinn, Schwarz am Zug

1. ... Kc6 2. e4 dxe4+ 3. Kxe4 Kd6 4. c4 Ke6 5. d5+ Kd6 6. Kd4 Ke7 7. Kc5 +-
play all

Originalforderung: "Les blancs gagnent même sans le trait"
Anton Baumann: Dual (1 Zug schneller am Ziel): 4.Kf5! Kd5 5.Kf6 Kc4 6.Ke7 d5 7.Ke6,Kd6 Kxc3 8.Kxd5 Kd3 9.Ke5 +- (2022-06-17)
comment

Keywords: Symmetrical position, Kindergarten Problem
Genre: Studies
FEN: 8/3p4/3k4/3p4/3P4/2PKP3/8/8
Reprints: E44 Spirit of the Times 27/01/1866
Input: Mario Richter, 2016-07-30
Last update: Alfred Pfeiffer, 2016-07-30 more...

77 - P1326818
Anton Baumann
3830 idee & form 131, p. 4416, 07/2016

(4+2)
s=13

1. Tg3+! Kh7 2. Df7+ Kh6 3. Th3+ Kg5 4. Dh5+ Kf4 5. Tf3+ Ke4 6. Df5+ Kxd4 7. Td3+ Kc4 8. Dd5+ Kb4 9. Td4+ Ka3 10. Db7 c2 11. Td3+ Ka4 12. Ta3+ Kxa3 13. Db3+ Kxb3=
play all

Anton Baumann: symmetrischer Versuch:
1.Tc7+? Kg8 2.Dg6+ Kf8 3.Tc8+ Ke7 4.De8+ Kd6 5.Tc6+ Kd5 6.De6+ Kxd4 7.Td6 Kc5 8.Td5+ Kb4(Kc4) 9.De4+ Ka3? 10.Ta5+ Kb3 11.Ta3+ Kxa3 12.Dc4 c2 13.Db3+ Kxb3=
aber 9. ... Kb3! 10.Tb5+ Ka3 11.Ta5+ Kb3 12.Ta3+ ist zu langsam
C+ Gustav 4.2a (2023-05-23)
comment

Keywords: Oneliner, Symmetrical position, Asymmetrical solution
Genre: Fairies
FEN: 7k/6R1/5Q2/8/3B4/2p5/8/K7
Input: Felber, Volker, 2016-10-22
Last update: Felber, Volker, 2016-10-22 more...

78 - P1334387
Reinhardt Fiebig
18524 Schach , p. 79, 02/2017

(3+12) C+
h#2
6.1...

1) 1. Kc4 Ta8 2. Kb3 Da2#
2) 1. Ke4 Tg8 2. Kf3 Dg2#
3) 1. Lb5 Txd6+ 2. Kc5 Dxd4
4) 1. Lf5 Txd6+ 2. Ke5 Dxd4#
5) 1. Kc6 Da2 2. Kb7 Da8#
6) 1. Ke6 Dg2 2. Kf7 Dg8#
play all

Stefan Felber: Schlüsselwort muß 'Königsstern' lauten. (2021-05-04)
comment

Keywords: Symmetrical position, Symmetrical solution, Echo, Königskreuz
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 3R4/2pbp3/1p1n1p2/3k4/1p1n1p2/2p1p3/3Q4/3K4
Input: Felber, Volker, 2017-05-29
Last update: Felber, Volker, 2017-05-29 more...

79 - P1339905
Teppo Mänttä
Suomen Tehtäväniekat 163 05/2005
in memoriam J. Hannelius

(2+5) C+
s#8
Circe
Längstzüger
wDU,sDU=Grashüpfer
sSU=Nachtreiter

1. Kc7! Nh3 2. Gd7 Nb6 3. Kd6 Nh3+ 4. Kxc6[+sGc1] Nb6+ 5. Kxb6 Ge8 6. Ka7 Gc6 7. Kb8 Gc7 8. Gb7 Gd6#
play all

Teppo Mänttä: Rundlauf Kb8-c7-d6xc6xb6-a7-b8. Switchback Gb7-d7-b7. (2021-04-24)
comment

Keywords: Circe, Maximummer, Minimal (wG), Symmetrical position, Asymmetrical solution, Aristocrat
Pieces:

= Grasshopper (G),

= Nightrider (N)
Genre: Fairies
Computer test: Popeye Windows-32Bit v4.73
FEN: 1K6/1*2Q6/*2q*2n*2q5/1*2q6/8/8/8/1k6
Input: HBae, 2017-09-21
Last update: HBae, 2017-09-22 more...

80 - P1346361
Teppo Mänttä
B14 Problemkiste (159-160) 07/2005

(1+1+8)
r#6
Circe
Längstzüger
nDL=Känguruh

1. KÄd1 KÄa4 2. KÄa5 KÄd1 3. KÄa1 KÄa6 4. KÄc4 KÄ6d3 5. KÄc5 KÄa6 6. KÄb4 Kxb4[+nKÄb8]#
play all

Arnold Beine: Unlösbar! ... 7.Ka1,Kb1,Kc1! (2018-02-01)
Alfred Pfeiffer: Vermutlich fehlt die Bedingung 'Köko'. (2018-02-01)
Arnold Beine: In der Originalquelle fehlt die Angabe "Köko", aber dann wäre die Aufgabe C+. (2018-02-01)
Teppo Mänttä: I confirm that is a KöKo problem. (Everything else would be crazy). (2021-04-25)
comment

Keywords: Skittles setup, Circe, Maximummer, Symmetrical position, Asymmetrical solution, Aristocrat
Pieces:

= Kangaroo (KÄ)
Genre: Fairies
FEN: 8/8/8/1k6/8/-*3Q-*3Q-*3Q5/-*3QK-*3Q5/-*3Q-*3Q-*3Q5
Input: Erich Bartel, 2018-01-31
Last update: Alfred Pfeiffer, 2018-02-01 more...

81 - P1347556
Teppo Mänttä
10709 Springaren (99) 09/2005

(2+4) C+
ser-h#15
Circe
sDU=Grashüpfer
sDL=Känguruh

1. Kh1-h2 2. Kh2-h3 3. Kh3-g4 4. Gg2-g5 5. Kg4-f3 6. KÄd5-g2 7. Kf3-g4 8. KÄg2-g6 9. Gc6-h6 10. KÄg6-g3 11. Kg4-h3 12. Gh6-h2 13. Kh3-g2 14. Kg2-h1 15. Gg5-g2 Se4xg3[+sKÄg1]#
play all

Teppo Mänttä: 4th HM in the informal tourney. The award was published in Springaren nr. 108, 03/2008. Judge Göran Forslund. (2021-04-24)
comment

Keywords: Seriesmover, Circe, Symmetrical position, Asymmetrical solution, Oneliner, Aristocrat
Pieces:

= Grasshopper (G),

= Kangaroo (KÄ)
Genre: Fairies
Computer test: %Popeye FreeBSD-5.3-RELEASE-32Bit-Version 3.81
FEN: K7/8/2*2q5/3*3q4/4N3/8/6*2q1/7k
Input: Erich Bartel, 2018-03-05
Last update: Alfred Pfeiffer, 2018-03-05 more...

82 - P1358781
Baldur Kozdon
1444 Troll 22 05/11/2018

(4+8)
#8

1. Sf5! f2 2. Dh1+ f3 3. Dh4+ Df4 4. Td8 Sc6 5. Sd6+ Ke3 6. Sc4+ Ke4 7. Dh7+ Df5+ 8. Dxf5#
play all

Anton Baumann: C+ Gustav 4.2a (2022-01-11)
comment

Keywords: Symmetrical position, Asymmetrical solution
Genre: n#
FEN: 4R3/4N3/4K3/4n3/3pkp2/3pqp2/4b3/4Q3
Input: Felber, Volker, 2018-12-18
Last update: Felber, Volker, 2018-12-18 more...

83 - P1380996
Otto Oppenheimer
8 Aufbau (New York) 18/06/1943

(5+2) C+
#2

1. Dg7! (Zugzwang)
1. ... Kd4 2. Dxf6#
1. ... Kxf4 2. Dg3#
1. ... Kxd6 2. Dc7#
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...

84 - P1381534
Mirko Degenkolbe
7571 Kudesnik 223, p. 15, 15/03/2020
Memorial Miroslav Havel-140

(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

[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, Chameleon Echo, 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...

85 - P1382569
Jewgenij J. Gik
Schachmaty i matematika 1983

(11+11)
BP in 18.5

AL: 1. e4 d5 2. e5 d4 3. c3 f6 4. Df3 Kf7 5. Dxb7 Dd5 6. Kd1 Dxg2 7. Kc2 Dxf1 8. Dxc8 Dxg1 9. Dxb8 Txb8 10. Txg1 Tb3 11. Tg6 Ta3 12. Th6 gxh6 13. bxa3 Kg7 14. Kb2 d3 15. e6 a5 16. h4 a4 17. h5 c5 18. f4 c4 19. f5==

faster solution (Henrik Juel): 1. c3 a5 2. e4 a4 3. Dg4 Ta5 4. Kd1 b5 5. Lc4 d5 6. Dxc8 bxc4 7. Dxc7 f6 8. Dxb8 Dxb8 9. Kc2 Dxh2 10. f4 Dxg1 11. g4 Dc5 12. Th6 Da3 13. bxa3 d4 14. Kb2 Th5 15.
e5 d3 16. f5 Kf7 17. gxh5 gxh6 18. e6+ Kg7==
play all

The fastest known symmetrical, mutual stalemate

Henrik Juel: The position can be reached in 18.0 moves, e.g.
1. Bc2-c3 Ba7-a5 2. Be2-e4 Ba5-a4 3. Dd1-g4 Ta8-a5
4. Ke1-d1 Bb7-b5 5. Lf1-c4 Bd7-d5 6. Dg4xc8 Bb5xc4
7. Dc8xc7 Bf7-f6 8. Dc7xb8 Dd8xb8 9. Kd1-c2 Db8xh2
10. Bf2-f4 Dh2xg1 11. Bg2-g4 Dg1-c5 12. Th1-h6 Dc5-a3
13. Bb2xa3 Bd5-d4 14. Kc2-b2 Ta5-h5 15. Be4-e5 Bd4-d3
16. Bf4-f5 Ke8-f7 17. Bg4xh5 Bg7xh6 18. Be5-e6 Kf7-g7 (2020-11-29)
Henrik Juel: ... but not in 17.5 moves, according to Euclide 1.01 (2020-11-29)
James Malcom: In other notatiom: 1. c3 a5 2. e4 a4 3. Qg4 Ra5 4. Kd1 b5 5. Bc4 d5 6. Qxc8 bxc4 7. Qxc7 f6 8. Qxb8
Qxb8 9. Kc2 Qxh2 10. f4 Qxg1 11. g4 Qc5 12. Rh6 Qa3 13. bxa3 d4 14. Kb2 Rh5 15.
e5 d3 16. f5 Kf7 17. gxh5 gxh6 18. e6+ Kg7

And by crikey! This is big news! This means that Gik actually had the record all along, and Minerva only tied it with his P1382027! (2020-11-29)
Henrik Juel: Gik's position is the record, but neither he nor Minerva knew this (2020-11-30)
James Malcom: This is an exciting development in the story of the mutual stalemate! (2020-11-30)
A.Buchanan: They will have to change the "Mr Robot" TV series: https://www.ozproblems.com/walkabout/walkabout2021/feb27 (2021-02-28)
A.Buchanan: Flipping left-right is again achievable in 18.0 not 17.5 - not entirely unexpected, as bK has further to walk, but was worth checking (2021-02-28)
more ...
comment

Keywords: Non-Unique Proof Game, Symmetrical position
Genre: Retro
FEN: 5bnr/4p1kp/4Pp1p/5P1P/p1p5/P1Pp4/PK1P4/RNB5
Reprints: 5 Best Problems 4, p. 94, 2007
61 Tim Krabbé's Website 16/08/2007
Input: James Malcom, 2020-11-29
Last update: A.Buchanan, 2021-02-28 more...

86 - P1384831
Lion Xray
Facebook 31/12/2020

(9+9)
In how many ways can you add a White Queen and a Black Queen to this diagram to obtain a legal position?

2021 solutions

A.Buchanan: beautiful! (2021-01-01)
Henrik Juel: Yes, beautiful simplicity; finally one I can handle...
There are 64-9-9 = 46 empty squares, so the queens can be added in 46x45 = 2070 ways
The only illegality is that both kings are in check, which happens in 7x7 = 49 ways
Answer: 2070-49 = 2021 (2021-01-01)
A.Buchanan: Oh the other two today aren't hard, Henrik. But this one is a real gift from the Gods (2021-01-01)
comment

Keywords: Add pieces (Dd), Symmetrical position, Kindergarten Problem
Genre: Retro, Mathematics
FEN: 4k3/3ppp2/ppp3pp/8/8/PPP3PP/3PPP2/4K3
Reprints: Retros mailing list 01/01/2021
Input: A.Buchanan, 2021-01-01
Last update: A.Buchanan, 2021-01-01 more...

87 - P1384836
Kurt Keller
StrateGems 93, p. 51, 01-03/2021
Happy Holidays

(9+3) C+
#3 v

1. Kd6? Kxb5 2. Tb1+ Kc4 3. La6#
2. ... Ka4!
2. Ta1 Ka4 3. Ld7#
2. ... Kc4 3. La6#
2. ... c4!

1. Kb6! Kxd5 2. Lf5 c4 3. Td1#
2. ... Kc4 3. Le6#
play all

Happy Holidays
By Mike Prcic

As the holiday season approaches, we are reminded of the current COVID-19 pandemic. It has been a difficult time for many of us. I have been in touch with many composers. Many are suffering, especially the older ones. Some are not infected but still need medical care, which is not available, since the hospitals are swamped with COVID-19 patients. One of StrateGems’ editors lost his younger brother to COVID-19. A long-time subscriber from Italy informed me that his whole family was infected. He had the hardest time with the infection but survived and is now COVID-19 negative.
On a positive side (if there is such a thing), we all have ample time for composing (and in my case for playing online bridge). WCCT-11 should benefit from the pandemic. Nevertheless, I hope the vaccine arrives soon, is effective, and that we all can go back to our lives.
To brighten the holiday spirit, Kurt Keller has sent a composition that reminds us of the Christmas tree. Thank you, Kurt!

1.Kd6? Kxb5 2.Rb1+ Ka4! (Kc4? 3.Ba6#);
2.Ra1 c4! (2…Ka4/Kc4 3.Bd7/Ba6#)
1.Kb6! Kxd5 2.Bf5 zz c4/Kc4 3.Rd1/Be6#

(Mike Prcic (Westlake Village, CA): Happy Holidays, in: StrateGems, January 2021)

Comments:

Author – Kurt Keller (Ulm, Germany)
Yet Another Chess Problem Database (...)

more ...
comment

Keywords: Symbol problem (Christmas tree), Stalemate dissolution, Flight-giving key, Selfblock, Switchback (k,k), Line opening, Symmetrical position, Asymmetrical solution
Genre: 3#
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-01-01)
FEN: 2B5/2B5/2K5/1PpP4/2k5/P1p1P3/2P5/2R5
Input: Kurt Keller, 2021-01-01
Last update: Kurt Keller, 2021-01-09 more...

88 - P1384868
Kurt Keller
2101 Gaudium 235, p. 1, 24/12/2020
Allen Gaudiumlesern zum Fest

(10+1) C+
#4

1. Ld8! droht 2. a5 [A] droht 3. Le7#
2. ... Kd6 [a] 3. Lf6 [B] droht 4. c5#
3. ... Kc5 [b] 4. Le7#

1. ... Kd6 2. Lf6 [B] droht 3. c5#
2. ... Kc5 [b] 3. a5 [A] droht 4. Le7#
3. ... Kd6 [a] 4. c5#
play all

Den nun schon fast traditionellen Weihnachtsbaum stiftet diesmal unser Leser Kurt Keller aus Ulm. Die Löser mögen beachten, dass dieses Problem ebenfalls am Löseturnier teilnimmt!
(Gunter Jordan (Jena, Germany): Urdrucke, in: Gaudium, Ausgabe 235, 2020-12-24)

2101 (Keller) 1.Ld8! droht 2.a5 [A] (3.Le7#) Kd6 [a] 3.Lf6 [B] (4.c5#) Kc5 [b] 4.Le7#, 1. .. Kd6 2.Lf6 [B] (3.c5#) Kc5 [b] 3.a5 [A] (4.Le7#) Kd6 [a] 4.c5#. Ein Weihnachtsbaum mit thematischem Inhalt (reziproke Züge zwischen [unausführbarer] Drohung und Lösung bei Weiß und Schwarz), was bei Symbolproblemen eher selten ist. Deshalb ragt dieser Festtagsgruß aus der großen Masse heraus (der Autor beglückte im Vorjahr diverse Problemspalten mit Weihnachtsbäumen). „Ein hübscher Baum mit einer moderaten Lösung.“ [Bert Kölske] „☺“ [Berthold Leibe] „Netter Weihnachtsgruß.“ [Karl-Heinz Siehndel] „Ein etwas dürrer Weihnachtsbaum mit nur einer schwarzen Kugel wird im Zugzwang ‚ermattet‘!“ [Joachim Benn] „Eine schlichte Tanne.“ [Claus Grupen]
(Gunter Jordan (Jena, Germany): Lösungen aus Gaudium 235, in: Gaudium, Ausgabe 237, 2021-02-28)

Comments:

Author – Kurt Keller (Ulm, Germany)
Gaudium (original problem) (235)
Gaudium (solution text) (237)
Yet Another Chess Problem Database (...)

Henrik Juel: C+ Popeye 4.61 (2021-01-02)
comment

Keywords: Symbol problem (Christmas tree), Rex solus, Symmetrical position, Asymmetrical solution, Reversal 1 (AaBb-BbAa), Stalemate dissolution, Flight-giving key, Switchback (k)
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 2K5/2B5/8/1PkP4/P1P1P3/P3P3/8/2R5
Input: Kurt Keller, 2021-01-02
Last update: Kurt Keller, 2021-03-04 more...

89 - P1384873
Kurt Keller
C17 Shakhmatnaya Kompozitsiya 154, p. 3, 12/2020
Merry Christmas & Happy New Year! Счастливого Рождества и веселого Нового года!

(8+2) C+
#4
b) -Be4

a) 1. Lc5! Kf4 2. Kg2 Kg5 3. Sh3+ Kh4 4. Lf2#
3. ... Kh6 4. Lf8#

1. La3? Kf4 2. Ld6+ Kf3 3. g5 fxg5 4. Lg4#
2. ... Kg5!

b) 1. Se4! Kf4 2. Ld6+ Kf3 3. g5 fxg5 4. Sxg5#

1. Ke1? droht 2. Ld6 droht 3. Le4#
2. ... Kg2 3. Le4+ Kg1 4. Sh3#
1. ... Kf4!

1. La3? droht 2. Lc1 droht 3. Le4+ Kf4 4. d4#
2. ... Kf4 3. d4+ Kf3 4. Le4#
1. ... Kf4 2. Ld6+ Kf3 3. Le4#
2. ... Kg5!
play all

С17. К.Келлер. a) 1.♗c5! ♔f4 2.♔g2 ♔g5 3.♘h3+ ♔h4 4.♗f2#, 3...♔h6 4.♗f8#, b) -♙e4, 1.♘e4! ♔f4 2.♗d6+ ♔f3 3.g5 fg5 4.♘:g5#.
(РЕШЕНИЯ «ШК» № 154 – 2020 [SK 154])

Comments:

Author - Kurt Keller (Ulm, Germany)
Yet Another Chess Problem Database (...)

more ...
comment

Keywords: Symbol problem (Christmas tree), Symmetrical position, Asymmetrical solution, Model mate, Switchback (k), Sacrifice of white pieces, Active sacrifice, Deflection, Steering, Minimal, Twin
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 5B2/8/5p2/5B2/4P1P1/5k2/3P1N1P/5K2
Input: Kurt Keller, 2021-01-02
Last update: Kurt Keller, 2021-03-30 more...

90 - P1384874
Kurt Keller
C18 Shakhmatnaya Kompozitsiya 154, p. 3, 12/2020
Merry Christmas & Happy New Year! Счастливого Рождества и веселого Нового года!

(8+8) C+
#4

1. Kd7? Kc5 2. Lxd6+ Kc4 3. La8 Kxb5 4. ?

1. Kb7! Kc5 2. Lxb6+ Kc4 3. Le8 Kxd5 4. Lf7#
play all

С18. К.Келлер. 1.♔d7? ♔c5! 1.♔b7! ♔c5 2.♗:b6+ ♔c4 3.♗e8 ♔:d5 4.♗f7#.
(РЕШЕНИЯ «ШК» № 154 – 2020 [SK 154])

Comments:

Author - Kurt Keller (Ulm, Germany)
Yet Another Chess Problem Database (...)

more ...
comment

Keywords: Symbol problem (Christmas tree), Symmetrical position, Asymmetrical solution, Switchback (k), Sacrifice of white pieces, Active sacrifice, Line opening, Drag-in sacrifice
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 2K5/2B5/1pBp4/pP1Pp3/p1k1p3/P1p1P3/2P5/8
Input: Kurt Keller, 2021-01-02
Last update: Kurt Keller, 2021-01-06 more...

91 - P1385091
Kurt Keller
Best Problems 97, p. 367, 01/2020
Happy New Year 2021
Šťastný nový rok 2021
С новым годом 2021
Bonne année 2021

(6+4) C+
#3 v

1. Le6+? A Kb4 a 2. Sd3+ B Ka4 b 3. Lb3# C
1. ... Kd4!

1. La6+! D Kb4 a 2. Sd3+ B Ka4 b 3. Lb5# E
1. ... Kd4 2. Sb3+ Ke4 3. Ld3#
play all

Kurt Keller – (Germania) Christmas card
2B5/2B5/2K5/8/2k5/p1p1p3/P3P3/2N5
≠3 (6+4) C+
1.♗e6+?
1…♔b4 2.♘d3+ ♔a4 3.♗b3‡ but 1…♔d4!
1.♗a6+!
1…♔b4 2.♘d3+ ♔a4 3.♗b5‡
1…♔d4 2.♘b3+ ♔e4 3.♗d3‡
Checking key, 2 model mates.

[...] We thank our colleagues who have sent us greetings from various
countries.

(Antonio Garofalo (Bari, Italy): EDITORIALE, in: BEST PROBLEMS, 2021 - January [BP097.pdf])

Comments:

Author – Kurt Keller (Ulm, Germany)
Yet Another Chess Problem Database (...)

more ...
comment

Keywords: Symbol problem (Christmas tree), Checking key, Model mate, Changed mates, Symmetrical position, Asymmetrical solution, Selfblock, Remote selfblock, interchange in mating position (LS (4))
Genre: 3#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 2B5/2B5/2K5/8/2k5/p1p1p3/P3P3/2N5
Input: Kurt Keller, 2021-01-07
Last update: Kurt Keller, 2021-01-30 more...

92 - P1385832
Kurt Keller
4585 idee & form 149, p. 5047, 01/2021
Weihnachts- und Neujahrsgruss

(10+2)
#5
b) -wBd4
c) ferner -wBb5

a) 1. d6? cxd6 2. b6 d5 3. Lb7 Kb5 4. Kc7 Kc4 5. La6#
4. ... Ka4! 5. Lc6+ Ka3

1. b6! cxb6 2. Kc7 b5 3. Ld7 Kxd5 4. Lf5 Kc4 5. Le6#

b) 1. b6? cxb6!
1. d6! cxd6 2. b6 d5 3. b7 d4 4. b8=D droht 5. Db5#
5. ... dxc3 5. Df4#

c) 1. b5? Kc5!
1. d6! cxd6 2. Kb7 d5 3. La4 d4 4. Lb3+ Kb5 5. a4#
play all

Nr. 4585, K. Keller [Ulm, Germany]: a) 1.d6? c:d6! 1.b6! c:b6 2.Kc7 b5 3.Ld7 K:d5 4.Lf5 Kc4 5.Le6⧧ b) 1.b6? c:b6! 1.d6! c:d6 2.b6 d5 3.b7 d4 4.b8D (5.Db5⧧) d:c3 5.Df4⧧ c) 1.b5? Kc5! 1.d6! c:d6 2.Kb7 d5 3.La4 d4 4.Lb3+ Kb5 5.a4⧧
(Andreas Nievergelt (Winterthur, Switzerland): informalturnier. Lösungen zu Heft i&f 149, in: idee & form 150, p. 5084, April 2021)

Comments:

Author – Kurt Keller (Ulm, Germany)
Yet Another Chess Problem Database (...)

more ...
comment

Keywords: Symbol problem (Christmas tree), Stalemate dissolution, Sacrifice key, Sacrifice of white pieces, Active sacrifice, Switchback (k), Option key, Promotion, Pawn mate (c), Symmetrical position, Asymmetrical solution, Twin (triplet), Minimal
Genre: n#
Computer test: Popeye Windows-32Bit v4.63 (512 MB)
FEN: 2K5/2p5/2B5/1P1P4/1PkP4/2P5/P3P3/2R5
Input: Kurt Keller, 2021-01-27
Last update: Kurt Keller, 2021-04-28 more...

93 - P1386033
Andrew Buchanan
chess.stackexchange.com 30/01/2021
to "Peter" and "jmamos"

(16+16) C+
Result? Duplex

1. ... fxg3 2. Dxg3 exf2 3. f4 droht 4. Dxa3# 3. ... fxg1=S+ 4. Lxg1 gxf4 5. Dxa3#
1. ... exf2? 2. Dxf2 fxg3 3. De3 g2,gxh2 4. Dxa3#
play all

Full-point zugzwang with full board. 2nd player mates by 4th move at the latest.
Henrik Juel: We cannot deduce who has the move, so we cannot say who wins
If Black has the move, White wins (and vice versa by symmetry)
0... fxg3 1.Dxg3 exf2 2.f4 fxg1=S+ 3.Lxg1 gxf4 4.Dxa3#
0... exf2? 1.Dxf2 fxg3 2.De3 g2,gxh2 3.Dxa3# (2021-01-31)
A.Buchanan: Exactly right, Henrik. I have added “duplex” to the stip as I think it belongs (2021-01-31)
Hans-Jürgen Manthey: in max. 35 Zügen gewinnt Schwarz:
1. d4 e5 2. d5 e4 3. c4 f5 4. f3 c6 5. g4 b5 6. h4 a5 7. h5 a4 8. h6 a3 9. Kf2 Da5 10. Kg3 Da6 11. Kh4 Kd8 12. De1 Kc7 13. Dg3+ Kb6 14. Dh3 Ka5 15. Lg2 Lb7 16. Lf4 Lc5 17. Sd2 Se7 18. d6 e3 19. Sf1 Sc8 20. Sg3 Sb6 21. Tf1 Tc8 22. Tf2 Tc7 23. Lf1 Lc8 24. Dg2 Db7 25. Th3 Ta6 26. Sh1 Sa8 27. Lh2 La7 28. Tg3 Tb6 29. Kh3 Ka6 30. c5 f4
und nun:
31. b4 g5 mit Schwarz gewinnt:
32. cxb6 Dxb6 33. dxc7 c5 34. cxb8S+ Lxb8 35. gxc5 Dxh6#
32. dxc7 Dxc7 33. cxb6 Dd6 34. bxa7, b7 Dxh6#
oder 31. b3 g5 32. b4 mit Weiß gewinnt:
32. ... fxg3 33. Dxg3 exf2 34. f4 fxg1S+ 35. Lxg1 gxf4 36. Dxa3#
32. ... exf2 33. Dxf2 fxg3 34. De3 gxh2, g2 35. Dxa3# (2021-02-01)
comment

Keywords: Construction task, Capture-free, Symmetrical position
Genre: Studies
Computer test: C+ Popeye 4.85
FEN: nnb5/bqrp3p/krpP3P/1pP3p1/1P3pP1/p3pPRK/P3PRQB/5BNN
Input: A.Buchanan, 2021-01-31
Last update: A.Buchanan, 2022-07-27 more...

94 - P1386298
Erich Bartel
3292 Scobs lignea 07/02/2021

(3+1) C+
#7
wSU=Nachtreiter

1. Kc6! Ka7 2. Nc5 Kb8 3. Ne4 Ka7 4. Nd7 Ka8 5. Kc7 Ka7 6. Ne5+ Ka8 7. Nd2#
play all

Henrik Juel: C+ Popeye 4.61 also
Asymmetry, but not very striking because of the proximity to the a-line
Still a very nice problem, which is solvable by hand (2021-02-07)
A.Buchanan: Nice to have an empty board for the nightriders to canter around in unblocked. That they are line pieces makes the uniqueness of the solution even more impressive. Someone must have already done tablebase for this endgame (2021-02-08)
comment

Keywords: Aristocrat, Oneliner (b5b8), Rex solus (s), Switchback (k), Corner mate, Ideal mate, Symmetrical position, Asymmetrical solution
Pieces:

= Nightrider (N)
Genre: Fairies
Computer test: Popeye FreeBSD-9.1-RELEASE-amd64-64Bit v4.59
FEN: 1k6/1*2N6/1*2N6/1K6/8/8/8/8
Reprints: 3293 Scobs lignea 07/02/2021
Input: Erich Bartel, 2021-02-07
Last update: James Malcom, 2021-02-08 more...

95 - P1386359
Kurt Keller
C11885 The Problemist 28-1, p. 15, 01/2021
New Year greetings

(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...

96 - P1386945
Werner Keym
Augsburger Allgemeine 13/02/2021

(6+1) C+
#2

1. ... Kxh7! 2. Le4+ Kg8 3. Sh6#
1. ... Kxf7! 2. Lf8 Ke6 3. Dd5#
2. ... Ke8 3. De7#
1. Sh6+? Kxh7 2. Le4#
play all

Schwarz hat keinen letzten Zug!

A.Buchanan: Werner opened my eyes to the delights of these “official jokes” sanctioned by Codex Article 15 through his book Eigenartige Schachprobleme. The animation does not handle them well, as the move numbering and the ordering has to be distorted as here (2021-03-04)
A.Buchanan: I expect that Werner will be delighted with this one, as it has very clean solutions and retro try, which is his aim. (2021-03-04)
more ...
comment

Keywords: Miniature, Symmetrical position, No legal last move for Black, Aristocrat, Rex solus (s), Asymmetrical solution
Genre: Retro, 2#
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-03-03)
FEN: 6k1/5NBN/8/6Q1/8/8/6B1/6K1
Input: Gerd Wilts, 2021-03-03
Last update: Alfred Pfeiffer, 2021-07-30 more...

97 - P1387362
Manfred Zucker
Freie Presse (Chemnitz) 24/06/1977

(1+1)
Wie viele verschiedene letzte Züge sind möglich?

29 Lösungen
play all

Gefragt war natürlich nach dem letzten Einzelzug. Nun kann zuletzt sowohl der weiße als auch der der schwarze König gezogen haben. Der weiße König kann von drei verschiedenen Feldern (a2,b1,b2) gekommen sein, und er kann auf a1 eine schwarze Dame, einen schwarzen Turm, einen schwarzen Läufer, einen schwarzen Springer oder nichts geschlagen haben, das sind 3x5=15 Möglichkeiten. Dasselbe trifft auf den schwarzen König zu, insgesamt ergeben sich so 30 Möglichkeiten für den letzten Zug - und doch ist diese Lösung nicht richtig! Die Stellung wKb2-sLa1 ist partiemöglich (letzte Züge: 1. ... a2-a2=L+! 2. Kxa1), die Stellung sKg2-wLh1 jedoch nicht, denn der weiße Läufer kann (bei schwarzer Königsstellung auf g2) auf keine Weise nach h1 gekommen sein! Diese partieunmögliche Stellung war also zu subtrahieren, das richtige Ergebnis mußte "29" lauten.

Duplicate Diagram: P1207607

Dazu schreibt die FP: "Wie viele verschiedene letzte Züge sind möglich? Noch ein kleiner Hinweis: Beachten Sie beim Zählen bitte auch, daß die Könige zuletzt geschlagen haben können.".

(MZ433)
.
Henrik Juel: solution
2x3x5 - 1 = 29
R: Kg2xLh1 is illegal (2021-03-12)
A.Buchanan: This preceded the DP rule by 20 years, so under “Golden Age” principle, that rule does not apply, although it would be sound either way. Under DP rule there would have been 2x2x3=12 possible last moves, as a rook or queen must have just been captured (2021-03-13)
A.Buchanan: Is an only kings position an aristocrat or a kindergarten? :) Is it a one liner? :) I think the answer should be no, no and no (2021-03-13)
comment

Keywords: Aristocrat, Miniature, only Kings, Golden Age, Last Move?, Symmetrical position, Asymmetrical solution
Genre: Retro, Mathematics
FEN: 8/8/8/8/8/8/8/K6k
Input: Felber, Volker, 2021-03-12
Last update: A.Buchanan, 2021-03-13 more...

98 - P1387885
Michael Schlosser
Matthias Hentschel
4383 Sächsische Zeitung 27/03/2021

(5+2) C+
#3
2 Lösungen

Henrik Juel: Nice asymmetri
more ...
comment

Keywords: Symmetrical position, Minimal
Genre: 3#
Computer test: Popeye 4.61
FEN: 8/8/3PK3/3RP3/2k5/1r6/Q7/8
Input: Rainer Staudte, 2021-03-27
Last update: Alfred Pfeiffer, 2021-03-27 more...

99 - P1388399
Erich Bartel
3338 Scobs lignea 11/04/2021

(2+1)
h#7
Platzwechselcirce
wTU=Wesir

1. Ke4xd5[+wWEe4] WEf5-g5 2. Kd5-e6 WEe4-e5+ 3. Ke6-f7 WEe5-e6 4. Kf7xe6[+wWEf7] WEf7-f8 5. Ke6-f6 WEg5-h5 6. Kf6-g7 WEh5-h6 7. Kg7-h8 WEf8-g8#,WEh6-h7# (Mattdual,Verschmerzbar?)
play all

Henrik Juel: The black king goes to h8, on his way helping the white wazirs reach f8 and h6
The mating move dual is very disturbing, I think (2021-04-11)
comment

Keywords: Circe (Platzwechsel), Symmetrical position, Asymmetrical solution, Aristocrat, Rex solus (s)
Pieces:

= Wazir (WE)
Genre: Fairies
Computer test: %Popeye FreeBSD-9.1-RELEASE-amd64-64Bit v4.59
FEN: 8/8/8/3*2R1*2R2/4k3/8/8/8
Input: Erich Bartel, 2021-04-11
Last update: Alfred Pfeiffer, 2021-04-21 more...

100 - P1388704
Erich Bartel
3346 Scobs lignea 17/04/2021

(2+1) C+
h#4
Platzwechselcirce

1. Kxa5[+wLa6] Sb6 2. Kxb6[+wSa5] Lc8 3. Ka7 Sc6+ 4. Ka8 Lb7#
play all

Henrik Juel: Nice that Ka6 goes the 'wrong' way in his first move (2021-04-17)
comment

Keywords: Circe (Platzwechsel-), Aristocrat, Miniature, Oneliner (a4a6), Symmetrical constellation, Symmetrical end position, Rex solus (s), Ideal mate, Symmetrical position
Genre: Fairies, h#
Computer test: %Popeye FreeBSD-9.1-RELEASE-amd64-64Bit v4.59
FEN: 8/8/k7/B7/N7/8/8/8
Input: Erich Bartel, 2021-04-17
Last update: Alfred Pfeiffer, 2021-07-12 more...

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