Die Schwalbe

29 problem(s) found in 1781 milliseconds (displaying 29 problem(s)). [COMMENTDATE>=20200808]

1 - P0531537
Tivadar Kardos
10138 The Fairy Chess Review 02/1955
P0531537
(8+7)
h#6*
*) 1. ... Lxb2#
1) 1. bxc1=L Ka1 2. Lxd2 Kb1 3. Lf4 Ka1 4. Lc7 bxc7 5. d2 c8=D 6. d1=L Dc1#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-08-08)
comment
Keywords: Promotion
Genre: h#
FEN: 8/1p6/1P6/pP6/Pp1p4/kP1p4/Pp1P4/1KB5
Input: Ralf Krätschmer, 1998-03-30
Last update: hpr, 1999-04-05 more...
2 - P0548622
Jozsef Pogats
763v idee & form 51 07/1996
P0548622
(7+8)
h#6
b) sBf5 nach c3
a) 1. Sxe2 Lxe2 2. f4 Lh5 3. gxh5 g6 4. Kxd3 g7 5. Ke4 g8=D 6. d3 Dd5#
b) 1. Sxe2 Lxe2 2. Kc2 Lh5 3. Kxd3 Kg1 4. Kxc4 Kf1 5. Kd3 Ke1 6. c4 Lxg6#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-08-08)
comment

Genre: h#
FEN: 8/8/6p1/2p2pP1/2Pp4/3Pp1p1/3kP1P1/2n2B1K
Input: Thomas Maeder, 1998-05-27
Last update: Alfred Pfeiffer, 2014-05-14 more...
3 - P1016627
Henry Tanner
16 Suomen Tehtäväniekat 21/04/2003
P1016627
(4+2)
s#8
1. Dhd8+ Ke6 2. Dac8+ Ke5 3. Ddf6+ Kd5 4. Dfe6+ Kd4 5. Dc3+ Kxc3 6. Dc4+ Kd2 7. Dd4+ Kc2 8. Db1+ Dxb1#
play all play one stop play next play all
Anton Baumann: Viele Duale wenn der sK im ersten Zug anders zieht:
zB: 1. ... Kc5 2.Da3,Da5,Da7+ Kc6 3.Da6+ Kc5 4.Dda5+ Kd4 5.Dc4+ Ke3 6.Dd2+ Kxd2 7.Dd4+ Kc2 8.Db1+ Dxb1# (2020-08-08)
comment
Keywords: Aristocrat
Genre: s#
FEN: Q6Q/8/3k4/8/8/8/8/K4Q1q
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Erich Bartel, 2020-08-08 more...
4 - P1016694
Pavlos N. Moutecidis
Csak-Majoros 2000
Lob
P1016694
(5+2)
s#6
1. Dc8+ Kd6 2. Te6+ Kd5 3. De8 Kc5 4. Tc6+ Kd5 5. Ta6 Kc5 6. Db5+ Txb5#
1. ... Kd5 2. Tc4 Kd6 3. Dd8+ Td7 4. Db8+ Tc7 5. Td4+ Kc5 6. Da7+ Txa7#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-09)
comment
Keywords: Aristocrat
Genre: s#
FEN: B2QR3/1r6/2k5/K7/R7/8/8/8
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Frank Müller, 2011-05-01 more...
5 - P1018888
Noam D. Elkies
The Problemist Supplement 1998
P1018888
(6+3) C+
#3
1. Se2! zugzwang
1. ... Kxe2 2. De3+ Kd1 3. Sf2#
2. ... Kf1 3. Df2#
1. ... Kg2 2. Dh1+ Kxh1 3. Lxd5#
1. ... Kxg4 2. Df4+ Kh3 3. Dg3#
2. ... Kh5 3. Le8#
1. ... Ke4 2. Lxd5+ Kd3 3. De3#
2. ... Kf5 3. Dh5#
2. ... Kxd5 3. Dc6#
play all play one stop play next play all
BS Problemid: 3725
Authors: Elkies, Noam D
Sources:
Years: 1998
A.Buchanan: Sacrifice of each Wh officer (2020-08-08)
comment
Keywords: Brian Stephenson Collection (3725)
Genre: 3#
Computer test: Popeye 4.85 09/08/2020
FEN: 8/7p/2B4Q/1P1p4/5NN1/5k2/8/1K6
Reprints: Facebook 09/08/2020
Input: Brian Stephenson, 2004-08-12
Last update: A.Buchanan, 2020-08-08 more...
6 - P1023056
Michael Keller
Dieter Kutzborski

1170 Europa-Rochade 07/1991
1. Preis
P1023056
(9+11)
#3
1. Kg7! droht 2. Ta6 ... 3. Lf6#
1. ... Dxa3 2. Kxf7
1. ... Dh1 2. Tc4
play all play one stop play next play all
im 'Schachexpress (DBSB)' nochmals nachgedruckt in Heft 04/2014 als Nr. 109
Sally: 1. Kf7? droht 2. Th5; 1.- Bf3, 2. Sc4, aber 1. -Dh1!2.Tc4-
-Bd3! (3. Sc4?/Sf7?) 1. - Tc4? droh 2. Txc5; 1.-Bd3, 2- Sf7, aber 1. - Da3,2. Kf7- Bf3! (3. Sc4?/Sf7ß)
1. Kg7 (Droht 2. Ta6!; 3. Lf6#.
1..- Dh1, 2. Tc4 (drohtTc5#) - Bd3, 3. Sxf7#.
1..- Dxf3, 2. Kxf7 (Droht 3. Th5#) - Bf3, 3. Sc4#.
Nr. 227 M. Keller : Ein Meister der S. Komp. (2010-10-29)
SCHRECKE: C+, popeye 4.85 (2020-08-08)
comment
Keywords: Brian Stephenson Collection (7915)
Genre: 3#
FEN: 5K2/4Bp2/3Np3/2p1k3/R2pPp1R/Ppp3p1/2P1n1P1/q7
Reprints: 84 Schachexpress (DBSB) 08/2013
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2020-08-08 more...
7 - P1079141
Jozef Lozek
589 Umenie 64 2000
P1079141
(2+9)
h#6
0.1...
keine Lösung
klären Stellung
Anton Baumann: Korrektur Diagramm: g2 = wS
Lösung: 1. ... Sf4 2.Ka5 Sxe6 3.La4 Sxd4 4.Sb5 Sxc2 5.Ta6 Sb4 6.Lb6 Sc6#
C+ Gustav 4.1d (2020-08-08)
comment

Genre: h#
FEN: 4b3/8/3np1r1/1k6/3p4/7p/2r3B1/6bK
Input: hpr, 2008-10-20
Last update: hpr, 2008-10-20 more...
8 - P1096308
Gunter Jordan
15407 Schach 01/2004
P1096308
(7+3)
s#6
1. Lf4 Kh4 2. c8=T Kh3 3. Tc4 Kh4 4. Lg4 Kxg4 5. Lh6+ Kh3 6. Tf3+ Lxf3#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-08)
comment

Genre: s#
FEN: 7R/2P2R2/8/7b/8/6Bk/4BP1p/7K
Input: Frank Müller, 2009-12-20
Last update: Frank Müller, 2009-12-20 more...
9 - P1100144
Attila Benedek
4331 Die Schwalbe 06/1983
P1100144
(10+3)
s#6
1. Sg1 Sd6 2. Dc4+ Sxc4 3. Tf3+ Se3 4. Lg3 h4 5. Lh2 h3 6. Tg2 hxg2#
1. Sg1 Sg7 2. Df5+ Sxf5 3. Tf3+ Se3 4. Lg3 usw.
1. Sg1 Sc7,Sf6 2. Dd5+ Sxd5 3. Tf3+ Se3 4. Lg3 usw.
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-09)
comment

Genre: s#
FEN: B3n3/8/4Q3/1N4Pp/7B/1P1k1N2/4R3/5R1K
Input: Frank Müller, 2010-02-08
Last update: Frank Müller, 2010-02-08 more...
10 - P1116523
Raphael Siebenschein
15949 Deutsches Wochenschach 25/12/1921
P1116523
(5+2)
#3
1. Lf5 Kb5 2. Dd8
1. ... Kb7 2. Dd4
play all play one stop play next play all
ST-DDDL A2-DDL
SCHRECKE: C+, popeye 4.85 (2020-08-09)
comment
Keywords: Miniature Collection (0322699)
Genre: 3#
FEN: 8/8/N1k2p2/P7/8/8/K7/1B1Q4
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2020-08-08 more...
11 - P1138343
Jan Papousek
176 Svobodne slovo 1976
P1138343
(5+2)
#3
1. Tc8 Sd4 2. exd4 Kxh2 3. Th8#
1. ... Sf4 2. exf4 Kxh2 3. Th8#
1. ... Sg5 2. Txg5 Kxh2 3. Th8#
play all play one stop play next play all
D18S
SCHRECKE: C+, popeye 4.85 (2020-08-08)
comment
Keywords: Miniature Collection (0335249)
Genre: 3#
FEN: 6R1/8/4n3/8/6R1/4P3/7P/3K3k
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2020-08-08 more...
12 - P1150362
Jan Papousek
187 Svobodne slovo 1976
P1150362
(4+2)
#3
1. Se5 f2 2. Lg2+ Kh4 3. Sf3#
1. ... Kh2 2. Sxf3+
play all play one stop play next play all
A12TL1 4m
vf: sLe1 statt sBf3, Johannes Bernardus Verdonk, 09.1971, Probleemblad, #7094
SCHRECKE: NL: 1.L:f3,Kf4 Kh2 2.Kf4,L:f3 Kh3 3.Th5#
Verdonk: P1150363 (2020-08-08)
comment
Keywords: Miniature Collection (0335250)
Genre: 3#
FEN: 8/8/6N1/6R1/4K3/5p1k/8/7B
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2020-08-08 more...
13 - P1156292
Philipp Graf
355 Schweizerische Schachzeitung , p. 75, 03/1904
Thematurnier
P1156292
(5+1)
#3
1. Kg3 Kf5 2. h5 Kxg5 3. Ta5#
1. ... Kh5 2. Se5 Kh6 3. Th7#
play all play one stop play next play all
MM-SB-T mm
SCHRECKE: C+, popeye 4.85 (2020-08-09)
comment
Keywords: Miniature Collection (0323607), Rex solus
Genre: 3#
FEN: 8/R7/6k1/6N1/6NP/8/5K2/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2020-08-08 more...
14 - P1167010
Noam D. Elkies
StrateGems 2001
P1167010
(4+1) C+
#3
1. Sg1 Kxg1,Ke1 2. h8=D Kf1 3. Da1#
play all play one stop play next play all
KRS
A.Buchanan: In such an open board, the role of wKg5 is unexpected (2020-08-08)
comment
Keywords: Miniature Collection (0347917), Promotion
Genre: 3#
Computer test: Popeye 4.85 09/08/2020
FEN: 8/7P/8/6K1/8/5N2/7R/5k2
Input: Zuncke/Bruder, 2010-09-12
Last update: A.Buchanan, 2020-08-09 more...
15 - P1178399
Alexandar A. Atanasijevic
954v feenschach 16 08/1973
P1178399
(8+6)
ser-h#31
Verbesserung f-17 S. 147
1. a1=D 2. Dxa6 3. Dc4 4. a5 5. a4 6. a3 7. axb2 8. b1=D 9. Dxb6 10. D6c5 11. b5 12. b4 13. b3 14. b2 15. b1=D 16. D1xf5 17. Dfd5 18. f5 19. f4 20. f3 21. f2 22. f1=D 23. Dxh3 24. D3xh5 25. Dhe5 26. h5 27. h4 28. h3 29. h2 30. h1=L 31. Le4 e3#
play all play one stop play next play all
5 Umwandlungen
Anton Baumann: C+ Alybadix (2020-08-08)
comment
Keywords: Excelsior, black (4-fach), Series mover
Genre: Fairies
FEN: 8/pp3p1p/PP6/5P1P/3k4/7P/pP1KP3/8
Input: HBae, 2010-10-18
Last update: HBae, 2010-10-18 more...
16 - P1184017
Andrey Dikusarov
Alexandr A. Derewtschuk

2546 Chorno-bili stezhyny 12/2010
P1184017
(5+4)
s#8
1. Tb2+ Kh4 2. Sg6+ Kh5 3. Dxb5+ Kh6 4. Dg5+ Kh7 5. Th1+ Lh5 6. Se7 Kh8 7. Dg6 Lxb2 8. Dg7+ Lxg7#
play all play one stop play next play all
Anton Baumann: C+ Gustav 4.1d (2020-08-08)
comment

Genre: s#
FEN: 5K1N/8/8/1p6/8/7k/6R1/b2b1QR1
Input: Frank Müller, 2011-01-02
Last update: Frank Müller, 2011-01-02 more...
17 - P1212480
Juraj Lörinc
8574 Springaren 67 12/1996
P1212480
(2+2)
h#6
0.2.1...
Köko
1) 1. ... Sd2 2. Kb4 Sf3 3. Kb3 Kf4 4. Kc4 Sd2+ 5. Se4 Ke5 6. Sd6 Kd4#
2) 1. ... Sb6 2. Kc5 Sd5 3. Kd4 Sf4 4. Sd5 Se6+ 5. Sf4 Kf3 6. Se2 Ke4#
play all play one stop play next play all
http://www.jurajlorinc.com/chess/m117_122.htm#uloha3
SCHRECKE: C+, popeye 4.85 (2020-08-08)
Henrik Juel: Beautiful chameleon echo (2020-08-08)
comment
Keywords: Köko, Aristocrat, just one species
Genre: Fairies
FEN: 8/8/8/1k6/2N5/2n3K1/8/8
Reprints: Chess Composition Microweb 01/1999
Input: Hans Gruber, 2011-10-09
Last update: Alfred Pfeiffer, 2020-08-08 more...
18 - P1213526
Juraj Lörinc
Thema Danicum 1997
2. Preis
58. Thematurnier DSK
P1213526
(2+2)
h#6
3.1...
wKU=königlicher Grashüpfer
wDU=Grashüpfer
sKL=königlicher Elch
sDL=Elch
1) 1. ELd6 Gc6 2. ELb5 Ga4 3. ELe4 Gf3 4. ELg3 Ga1 5. ELe2 Gd1 6. ELc1 Gb1#
2) 1. ELa1 Gc4 2. ELc5 Gc6 3. ELe6 Gf7 4. ELb7 Ga7 5. ELc5 Gc4 6. ELb3 Ga2#
3) 1. ELc3 Gc4+ 2. ELc5 Gc6 3. ELd2+ Gd1 4. ELb3 Ga4 5. ELa5 Ga6 6. ELb7 Ga8#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.85 (2020-08-08)
comment
Keywords: Symmetrical position, Asymmetrical solution, Aristocrat, Oneliner
Pieces: dl = Moose (EL), du = Grasshopper (G), ku = Grasshopper (G), kl = Moose (EL)
Genre: Fairies
FEN: 8/8/4*2K3/3*2Q4/8/1*3k6/*3q7/8
Reprints: Chess Composition Microweb 26/07/1999
Input: Hans Gruber, 2011-10-09
Last update: Alfred Pfeiffer, 2020-08-08 more...
19 - P1220203
Victor Barthe
2974 Die Schwalbe 76, p. 58, 04/1934
P1220203
(9+9)
#2
1. Lc5! (2. Ld4)
play all play one stop play next play all
Gerald Ettl: 1.Dh1! (2020-08-08)
Henrik Juel: C+ Popeye 4.61
Gerald is right; 1.Lc5?? is not even a try (2020-08-08)
comment

Genre: 2#
FEN: 1n2B3/3N1K2/1BNppb2/1p1k4/1r1q4/1P1P4/1n4R1/Q7
Input: Felber, Volker, 2011-11-08
Last update: Felber, Volker, 2011-11-08 more...
20 - P1226347
Ferdinand Möller
580 Casopis Ceskych Sachistu 05/1909
P1226347
(9+4)
s#8
1. Kc5 b3 2. Db5 b2 3. Kb6+ Kd6 4. f8=D+ Te7 5. Td8+ Ld7 6. Ka7 Kc7 7. Le5+ Txe5 8. Da5+ Txa5#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-08)
comment

Genre: s#
FEN: 4R2B/5Pr1/2K1b3/4k1P1/1p1N4/4P3/8/1B3Q2
Input: Frank Müller, 2011-12-03
Last update: Frank Müller, 2011-12-03 more...
21 - P1241082
Arnold Graf Pongracz
1087 Schachzeitung , p. 86, 01-02/1860
P1241082
(12+4)
s#7
1. Se7+ Kf6 2. Lc4+ Tf7 3. Kd5+ Lb6 4. fxe4 Txf8 5. Da1+ Ld4 6. Sec6+ Txd8+ 7. Sd7+ Txd7#
play all play one stop play next play all
Unter dem Pseudonym Einsiedler zu Tirnau veröffentlicht.
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-09)
comment
Keywords: Battery play
Genre: s#
FEN: 1N1B1R2/5B1r/Q2K2PP/3N1k2/4p1R1/4bP1P/8/8
Input: Frank Müller, 2012-06-09
Last update: Felber, Volker, 2018-02-06 more...
22 - P1255115
Igor Yarmonov
11880 Die Schwalbe 201 06/2003
P1255115
(5+12)
#9
Anton Baumann: 1.Te5+ Kf4 2.Tb5+ Ke4 3.Lg4 Thf8 4.Ld7 Tbc8 5.Te5+ Kf4 6.Th5+ Ke4 7.Le6 nebst 8.Th4+ Tf4 9.Txf4#
C+ Gustav 4.1d (2020-08-08)
comment

Genre: n#
FEN: 1r5r/8/1p1B3p/7R/1p1pk3/3p2p1/n2P1bK1/3B2n1
Input: Gerd Wilts, 2012-12-13
23 - P1255345
Jorma Pitkänen
Aleksandr Chistyakov

12460 Die Schwalbe 210 12/2005
P1255345
(8+12)
#9
Anton Baumann: 1.c5 d5 2.Txe4 dxe4 3.Tc4 d5 4.cxd6 Lc6 5.Tc5+ Sd5 6.Lxa4 Le7 7.Txd5+ Lxd5 8.Ld7+ Le6 9.Lxe6#
C+ Gustav 4.1d (2020-08-08)
comment

Genre: n#
FEN: 2rbbN2/2ppn3/3p1p2/5k1p/pRP1nP2/2R1P2K/2B5/8
Input: Gerd Wilts, 2012-12-13
24 - P1264247
Manfred Ernst
15095 Die Schwalbe (253) 02/2012
P1264247
(11+4)
s#8
1. Le6 h5 2. Se8 Ke4 3. Sd6+ Kf4 4. g4 hxg4 5. Db4+ Te4 6. Tf5+ Ke3 7. Dc3+ Ke2 8. Lc4+ Txc4#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-08)
comment
Keywords: double-check mate
Genre: s#
FEN: 8/3N4/1PK2N1p/1P1R4/5kBB/4rb2/3Q2P1/5R2
Input: Frank Müller, 2013-03-14
Last update: Frank Müller, 2013-03-14 more...
25 - P1265972
Oleksandr I. Saischdschai
742 The Ural's Problemist 04-06/1999
P1265972
(11+7)
s#8
1. Lc1 e3 2. c5 dxc5 3. Kb5 c4 4. Ka5 c3 5. Tb5 c2 6. Sd4 e5 7. dxe6ep Se7 8. Sc6+ Sxc6#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2020-08-09)
comment
Keywords: En passant
Genre: s#
FEN: 5Rn1/k3p3/1RKpNp1p/3P1P1P/P1P1pB2/8/4P3/8
Input: Frank Müller, 2013-03-31
Last update: Frank Müller, 2013-03-31 more...
26 - P1371205
Michael Schlosser
1906 Gaudium 215 24/12/2019
Weihnachts- und Neujahrsgruß an alle Gaudium-Leser
P1371205
(4+2) C+
Matt in wieviel Zügen?
1. ... Kxg8! 2. Ke7 Kh8 3. Sf6 gxf6 4. Kf7 f5 5. g7+ Kh7 6. g8=D+ Kh6 7. Dg6#

1. Sf6? gxf6 2. Kf7 f5 3. g7# ist nur Verführung, da S keinen letzten Zug hat
play all play one stop play next play all
Mate in 6 not 3
A.Buchanan: Really happy little problem, with clean lines in both the solution and the retro try, and a double sacrifice. I have taken the liberty of removing "minimal" as keyword here, sorry, sorry, because it applies to the *mating* side, here White. White only becomes minimal *after* having sacrificed two officers! :) (2020-08-08)
more ...
comment
Keywords: No legal last move for Black, Promotion, Miniature
Genre: Retro, 3#, n#
Computer test: Popeye 4.61
FEN: 4N1Bk/6p1/4K1P1/8/8/8/8/8
Input: Rainer Staudte, 2019-12-31
Last update: A.Buchanan, 2020-08-08 more...
27 - P1378866
Ivan Skoba
Pat a Mat 29 06/2000
P1378866
(12+6) C+
#2
Madrasi
1) 1. axb6ep+! Ka5 2. b7#
2) 1. dxc6ep! ... 2. Sb4# 1. ... b5xc4 2. Dh4xc4#
3) 1. exf6ep! ... 2. Te6#
4) 1. gxh6ep! ... Df6#
play all play one stop play next play all
Proof concerning the double.step of the black pawn in the last move uses the Madrasi condition.
Microweb: http://www.jurajlorinc.com/chess/madrep.htm#uloha7
Henrik Juel: C+ Popeye 4.61
One solution in four parts: last move was b7-b5, c7-c5, f7-f5, or h7-h5 (2020-08-08)
comment
Keywords: Madrasi, En passant as key (4x), Capture key, Checking key, Partial Retro Analysis (PRA)
Genre: Retro, 2#, Fairies
Computer test: Popeye 4.61
FEN: K2B4/8/k5N1/PppPPpPp/p1B4Q/2P1R3/N7/8
Reprints: Chess Composition Microweb 01/07/2002
Input: James Malcom, 2020-08-08
Last update: James Malcom, 2020-08-08 more...
28 - P1378868
Jan Papousek

2. Lob
ZK Kotva, 1963
P1378868
(3+3) C+
#2
1. a4! droht 2. Da8#
1. ... bxa3ep 2. Da4#
1. ... Ka7 2. Db7#
play all play one stop play next play all
more ...
comment
Keywords: En passant
Genre: 2#
Computer test: popeye 4.85
FEN: 8/2K5/k7/2p5/1p2Q3/8/P7/8
Input: Rainer Staudte, 2020-08-08
Last update: Alfred Pfeiffer, 2020-08-08 more...
29 - P1378879
Bruce Leverett
Steven B. Dowd

Chessbase India 2020
P1378879
(6+4)
#4
Can be done as miniature by removing wBa5c4 & sBa6, shifting sBc5 to a5, but lose the set play
Henrik Juel: C+ Popeye 4.61
Set play 1... cxb4 2.Sxb4+ Ka1 3.c5 a2 4.Sc2#
Solution
1.Se3 Ka1 2.Sd5 cxb4 3.Sxb4 a2 4.Sc2
2.Ka2/a2 3.Sc3+/Se3 (2020-08-08)
comment
Keywords: Pure Round Trip (S4)
Genre: n#
FEN: 8/8/p7/P1p5/KPP5/pR6/k1N5/8
Reprints: Facebook 04/08/2020
Input: A.Buchanan, 2020-08-08
Last update: A.Buchanan, 2020-08-08 more...
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The problems of this query have been registered by the following contributors:

Ralf Krätschmer (1)
Thomas Maeder (1)
Selbstmatt-Miniaturen/Reflexmatt-Miniaturen (2)
Brian Stephenson (2)
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