Die Schwalbe

18 problem(s) found in 2914 milliseconds (displaying 18 problem(s)). [COMMENTDATE>=20220810 AND G='h#' AND NOT S='Polski Zwiazek Szachowy' AND K='Schachschlüssel'] [download as LaTeX]

1 - P1356948
Harald Grubert
Reinhardt Fiebig

Bulletin 2012
JT Tschumakow-70
3. Lob
P1356948
(2+10) C+
h#7
1. Ta1+ Lxa1 2. Db2+ Kxb2 3. c3+ Kxc3 4. Ld4+ Kxd4 5. e5+ Kxe5 6. Tf6 Kxf6 7. Sf7 Kxf7#
play all play one stop play next play all
Jakob Leck: cf. P1240915 (2022-12-28)
comment
Keywords: discovered checkmate, bi-coloured Bristol, Battery creation, Batteriematt diagonal, Minimal, Sacrifice of black pieces, Sacrifice key, Checking key, Schlüssel = Eckzug
Genre: h#
FEN: 7k/6qp/r3pB1n/8/1np5/4b3/r7/1K6
Input: Gunter Jordan, 2018-10-28
Last update: Gunter Jordan, 2018-10-28 more...
2 - P1381459
Christer Jonsson
Vidadi Zamanov

Gravure 30/10/2020
2. Lob
Abt. h#2 8-10 Steine
P1381459
(3+7) C+
h#2
3.1...
1) 1. Sd6-b5+ Kc5-b6 2. Kd8-c8 Te6xe8#
2) 1. Le8-d7 Te6-e7 2. Ld7-c8 Se5xc6#
3) 1. Le8-f7 Kc5xc6 2. Sd6-c8 Se5xf7#
play all play one stop play next play all
PR Igor Agapow
Yuri Bilokin: redaction Yuri Bilokin
Christer Jonsson
Vidadi Zamanov
bRb1, bBf8-f4 3kb3/8/2pnR1r1/2K1N3/5b2/8/8/1r6 (3+7) h#2 4.1…
1.Sb5 Kb6 2.Kc8 Rxe8# (MM) 1.Sf7 Rd6+ 2.Ke7 Sxg6# (MM)
1.Bd7 Re7 2.Bc8 Sxc6# (MM) 1.Bf7 Kxc6 2.Sc8 Sxf7# (MM)
Active sacrifice (black, delayed). Ambush (wR). Hideaway (bB, sacrificial)
Play on the same square (B1, 2). Play on the same square (B2, 3)
Model mate × 4 (2022-12-17)
comment
Keywords: Checking key
Genre: h#
Computer test: Popeye 4.83
FEN: 3kbb2/8/2pnR1r1/2K1N3/8/8/8/1q6
Input: Marcin Banaszek, 2020-11-01
Last update: Alfred Pfeiffer, 2020-11-03 more...
3 - P1397203
Viktor S. Zheglov
Yuri Paramonov

8283 Seven Chess Notes 164 09/2019
P1397203
(2+4) C+
h#6
2.1...
1) 1. Dc5-b6+ Sc8xb6 2. Tc4-e4+ Kb3-c3 3. Te4-e8 Kc3-d4 4. Kf6-e7 Kd4-e5 5. Ke7-f8+ Ke5-f6 6. Ld5-g8 Sb6-d7#
2) 1. Dc5-e7 Sc8xe7 2. Tc4-h4+ Kb3-c3 3. Th4-h7 Kc3-d4 4. Kf6-g7 Kd4-e5 5. Kg7-h8 Ke5-f6 6. Ld5-g8 Se7-g6#
play all play one stop play next play all
Selbstplagiat! Nochmals als vermeintliches Original in Seven Chess Notes 190, 11/2021, Nr. 9625 veröffentlicht!
Yuri Bilokin: anticipated (P1343313) (2023-01-23)
comment
Keywords: Aristocrat, Minimal (S), Miniature, Checking key (in 1), Ideal mate, Corner mate (in 2)
Genre: h#
Computer test: Gustav 4.1c
FEN: 2N5/8/5k2/2qb4/2r5/1K6/8/8
Input: Marcin Banaszek, 2021-12-17
Last update: Gunter Jordan, 2022-01-24 more...
4 - P1401191
Norbert Geissler
Raúl Jordan

2241 Gaudium 250 31/10/2021
1. Preis
Abt. h#2,5-3,5
PR Manfred Rittirsch
P1401191
(5+13) C+
h#4
0.2.1...
1) 1. ... Se1+ 2. fxe1=L Kc2 3. Kf2 Kc2-d1 4. Dg2 Lxe1#,
2) 1. ... Le1 2. fxe1=S Kd2 3. Tf2+ Kd2-d1 4. Kf3 Sxe1#
play all play one stop play next play all
Schlüssel- und Mattzüge auf das gleiche Feld.
A.Buchanan: Hi Gunter thanks for your scholarship. The specified syntax for PDB is to separate phases by commas. If something only occurs in 1 phase I guess it would be e.g. "L,". It is not a good idea to have multiple occurrences of the same keyword within a problem, because that makes counting & quality-checking more difficult, and is fiendishly difficult to track. Thanks for your understanding. If you have different opinions, please express them here, in German or English. (2022-08-01)
Yuri Bilokin: more economical c1=a1, then bPc7(-bNc7) 8/2p5/3b4/p1Rpp3/p3n3/K1Prq3/NB1pk3/3br3 h#4 0.2.1…
1...Sc1+ 2.dxc1=B Ka2 3.Kd2 Kb1 4.Qe2 Bxc1# (MM)
1...Bc1 2.dxc1=S Kb2 3.Rd2+ Kb1 4.Kd3 Sxc1# (MM) (2022-08-03)
Mario Richter: Hi Andrew, can you please give an example in what sense "multiple occurrences of the same keyword within a problem" do make "counting & quality-checking more difficult", and what you mean with "is fiendishly difficult to track"! (2022-08-04)
Gunter Jordan: Lieber Yuri, wie mir die Autoren mitteilten, kannten sie die von dir angegebene Stellung (und noch weitere Versionen), doch entschieden sie sich bewusst für ihre Diagrammposition, weil darin Weiß nicht nur drei Anfangszüge hat, wovon sogar zwei lösen, sondern eine größere Auswahl in einer viel freieren Stellung. (2023-01-15)
Gunter Jordan: ... entschuldigung, verzählt. Es sind 4 Anfangszüge bei Yuri. (2023-01-15)
comment
Keywords: Exchange of roles (L-S), Koshakin Theme, Model mate, Reciprocal moves by White, Schnoebelen Theme (l,s), under-promotion (l,s), Zilahi, x pieces move to one square, x pieces capture on one square, Square vacation, Checking key (1)
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 8/4n3/5b2/2p1Rpp1/2p3n1/2K1Prq1/2NB1pk1/5br1
Reprints: E1 The Problemist , p. 164, 07/2023
Input: Gunter Jordan, 2022-05-08
Last update: Gunter Jordan, 2023-11-27 more...
5 - P1404206
Rolf Wiehagen
Christer Jonsson
Manfred Nieroba

2679V Problemskak 58, p. 12, 04-06/2022
P1404206
(3+14) C+
h#2
2.1...
1) 1. Da7+ Txa7 2. Sa6 Txh7#
2) 1. Db7+ Dxb7 2. Sc6 Dxh7#
play all play one stop play next play all
Matts auf dem gleichen Feld.

Vergleiche: P1404295
more ...
comment
Keywords: Checking key, Liniensperrung, Unpinning, pin-mate, Exchange of roles (D-T), Model mate, x pieces capture on one square, Pelle move, Critical move
Genre: h#
Computer test: C+ Popeye 4.61
FEN: Kn6/6qp/5p2/5pp1/R3Q1nk/5br1/rp2p3/6b1
Input: Gunter Jordan, 2022-09-09
Last update: A.Buchanan, 2022-09-16 more...
6 - P1408001
Uwe Karbowiak
51 Schach in Schleswig-Holstein 2016
Preis
P1408001
(7+13) C+
#10
1. Lg8+! Kh8 2. Lb3+ Kh7 3. Tc3 Txc3 4. Lg8+ Kh8 5. Ld5+ Kh7 6. Kxg3 f1=S+
7. Kh3 Sg3 8. Lg8+ Kh8 9. Sh4 ... 10. Sg6#
play all play one stop play next play all
more ...
comment
Keywords: Staggered preplans, under-promotion (sS), Checking key
Genre: h#
Computer test: SCHRECKE: Gustav 4.2c
FEN: 3n1R2/2r4k/5P1p/3B3p/3p1P2/3Rp1nK/2ppppN1/2b5
Input: Dieter Berlin, 2023-02-28
Last update: Dieter Berlin, 2023-02-28 more...
7 - P1408770
Marko Ylijoki
H4671 The Problemist 29-2, p. 63, 03/2023
P1408770
(3+12) C+
h#6
0.2.1...
1) 1. ... b8=D+ 2. Kg4+ Df4+ 3. Kh5 Dd2 4. Le3 fxe3 5. Kg4 Dd1 6. Kg3 Dg1#
2) 1. ... b8=T 2. b2+ Txb2 3. d2+ Kxc2 4. d1=S Kd3 5. Se3 Te2 6. Sf5 Te4#
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Yuri Bilokin: you can see 1.h2 b8=Q+ 2.Kg4+ Qf4+ 3.Kh3 Qe3 4.Bf6 Qxf3#
1.h2 b8=Q+ 2.Kg4+ Qf4+ 3.Kh3 Qe3 4.Be7 Qxf3#
1.h2 b8=Q+ 2.Kg4+ Qf4+ 3.Kh3 Qe3 4.Bd8 Qxf3#
1.Bf6 b8=Q+ 2.Kg4 Qxb3 3.h2 Qd5 4.Kh3 Qxf3# (2024-02-29)
comment
Keywords: Checking key (in 1), Promotion key (in 1), under-promotion key (in 2), under-promotion (ts in 2), konsekutive Umwandlungen 2 (ts in 2), bi-coloured Bristol (in 1), Cross check (in 1), Discovered check (in 1), selfpinning (in 1), Unpinning (in 1), Switchback (k in 1), Model mate (in 1), Exchange of Promotions
Genre: h#
FEN: 5n1n/1P6/8/6b1/5k1p/pppp1p1p/2p2P2/2K5
Input: Gunter Jordan, 2023-04-10
Last update: Felber, Volker, 2023-10-15 more...
8 - P1408897
Marko Ylijoki
H1852 Probleemblad 1/23 01-03/2023
Onerva gewidmet
P1408897
(3+15) C+
h#6
0.2.1...
1) 1. ... d8=T+ 2. Kc4+ Td3 3. Lg8 Txb3 4. Sc7 Txe3 5. Dc2+ Kxc2 6. Sd5 Te4#
2) 1. ... d8=L 2. Lf5 Lf6 3. Lh3 Lxb2 4. Kd2 Lf6 5. Ke1 Kc1 6. Lf1 Lh4#
play all play one stop play next play all
Yuri Bilokin: you can see h#3 1.c4 d8=Q+ 2.Rd5 Qxa5 3.c3 Qxd5# (2023-04-19)
comment
Keywords: under-promotion key (t,l), under-promotion (t,l), Checking key (in 1), Cross check (in 1), Discovered check (in 1), Königsbatterie (in 1), selfpinning (in 1), Unpinning (in 1), Line opening (in 1), Selfblock, Switchback (L in 2), Model mate (in 2)
Genre: h#
FEN: 8/3P3b/n7/rrp5/qp3p2/pp1kpP2/1p2p3/bK6
Input: Gunter Jordan, 2023-04-15
Last update: Gunter Jordan, 2023-07-25 more...
9 - P1409569
Eberhard Schulze
17242 Schach , p. 78, 07/2011
P1409569
(6+5)
h#2
2.1...
1. Te3+ Kd6 2. Kd4 Th4#
1. Td6+ Kf5 2. Kd5 Lg8#
play all play one stop play next play all
Yuri Bilokin: In each of the solutions, one white rook is extra
1.Te3+ Kd6 2.Kd4 Th4# (-wRd8)
1.Td6+ Kf5 2.Kd5 Lg8# (-wRh5) (2023-05-12)
Henrik Juel: C+ Popeye 4.61 also (2023-05-12)
more ...
comment
Keywords: Checking key
Genre: h#
Computer test: Gustav 4.2
FEN: 3R4/1p5B/4K3/1Pp4R/2k5/2pr4/8/6B1
Input: Eberhard Schulze, 2023-05-12
Last update: Felber, Volker, 2023-06-23 more...
10 - P1409573
Eberhard Schulze
Heilbronner Stimme 27/08/2011
Wolf Böhringer gewidmet
P1409573
(4+5)
h#2
b) wKa6->a2
a) 1. Ke5+ Dd6+ 2. Ke4 Sg3#
b) 1. Ke5+ Dd5+ 2. Kf4 g3#
play all play one stop play next play all
Abzugs- und Gegenschachs, Matts von g3 aus mit wS und wB
Henrik Juel: C+ Popeye 4.61 also (2023-05-12)
more ...
comment
Keywords: Twin, Königsbatterie, Checking key, Exchange of roles (S-B), Discovered check
Genre: h#
Computer test: Gustav 4.2
FEN: 6b1/8/K3k2r/8/6p1/3Qp3/6P1/7N
Input: Eberhard Schulze, 2023-05-12
Last update: Gunter Jordan, 2023-05-12 more...
11 - P1409578
Eberhard Schulze
feenschach 15/01/2012
P1409578
(4+9)
h#3
b) +sBd5
a) 1. Dxf6+ Ke4 2. Db6 cxb3 3. Sc6 Td5#
b) 1. Dxd4+ Kf5 2. Dc4 Lh4 3. Kd4 Lf2#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 also (2023-05-12)
Yuri Bilokin: more economical -bPf3 3n4/4p3/5B2/2k1K3/1p1R3q/1pb5/2Pp4/8 (4+8) h#3 b) bPb4-d5
a) 1.Qxf6+ Ke4 2.Qb6 cxb3 3.Sc6 Rd5#
b) 1.Qxd4+ Kf5 2.Qc4 Bh4 3.Kd4 Bf2# (MM)

Exchange of functions (wRd4/wBf6, Captured / Mate)
Zilahi (passive, RB, 2) (2023-05-14)
comment
Keywords: Twin, Checking key, Capture key
Genre: h#
Computer test: Gustav 4.2
FEN: 3n4/4p3/5B2/2k1K3/1p1R3q/1pb2p2/2Pp4/8
Input: Eberhard Schulze, 2023-05-12
Last update: Gunter Jordan, 2023-05-12 more...
12 - P1409619
Eberhard Schulze
Problem-Forum 01/09/2014
3. Lob Informalturnier 2014
P1409619
(7+5) C+
h#2
b) wBf3->f5
a) 1. Txc5+ Sd3 2. Tb5 Sf4#
b) 1. Lxc5+ Se4 2. Le7 Sc3#
play all play one stop play next play all
Selbstfessefung des weißen (Matt-)Springers nach schwarzem Schachgebot. Mustermatt durch diesen weißen Springer nach schwarzer Rückkehr.
more ...
comment
Keywords: Fesselungsspiel (211110110), Switchback (t,l), Capture key, Checking key
Genre: h#
Computer test: Gustav 4.2
FEN: 2R1r3/4bN2/b7/1rPk4/8/5P2/4KN2/6B1
Input: Eberhard Schulze, 2023-05-14
Last update: Gunter Jordan, 2023-06-28 more...
13 - P1410382
Marko Ylijoki
Mirko Degenkolbe

19383 Die Schwalbe 321, p. 147, 06/2023
P1410382
(2+15)
h#7
0.1.1...
b) sBd5->c4
a) 1. ... dxe8=L 2. Ke7 Lxh5 3. Kf6 Le2 4. Kg6 Lxd3+ 5. Kh5 Lb5 6. Lc4 Kxc2 7. Dg4 Le8#
b) 1. ... dxe8=T+ 2. Kd7 Td8+ 3. Kc6 Txd3 4. Kc5 Td8 5. Dd7 Ke2 6. Kd4 Kf3 7. Kd3 Txd7#
play all play one stop play next play all
19383 (Marko Ylijoki &Mirko Degenkolbe). a) 1.– d:e8=L 2.Ke7 L:h5 3.Kf6 Le2 4.Kg6 L:d3+ 5.Kh5 Lb5 6.Lc4 K:c2 7.Dg4 Le8# (Mustermatt) b) 1.– d:e8=T+ 2.Kd7 Td8+ 3.Kc6 T:d3 4.Kc5 Td8 5.Dd7 Ke2 6.Kd4 Kf3 7.Kd3 T:d7#. „Rundlauf, Kniest, Koschakin-Thema und Mustermatt in a). Kniest und Maslar mit dem umgewandelten Turm, Bauer(Turm)-Rundlauf von d7 nach d7, Klasinc (weißer Bauer / schwarzer König) in b).“ (Autoren) BK war „verblüfft, dass es keine Nebenlösung mit der weißen Dame“ gab. JB entdeckte das folgende Detail: „In a): Der erwandelte weiße Läufer räumt das Mattfeld für den schwarzen König, die schwarze Dame blockt. In b): Der erwandelte weiße Turm räumt das Mattfeld für den schwarzen König, die schwarze Dame ist Schlagopfer.“ Insgesamt gibt es hier „eine Fülle von strategischen Themen, wie z. B. schwarze Opfer, konsekutiver Umnow, Klasinc, Kniest, Koschakin-Thema, Maslar, Platzwechsel von weißem Turm und schwarzem König, Umwandlung in Turm und Läufer bei Weiß, Rückkehr des weißen Turms, ein Mustermatt. Der hohe Aufwand an schwarzen Steinen hat sich hier gelohnt. Schwierig und schön.“ (KHS) Dazu sehen wir noch einen „Rundlauf des weißen Läufers in a).“ (TZ) „Ein großartiger Hit in Sachen Hilfsmattmehrzüger.“ (JA)
(MD1918)

Autoren:
Kniest, Rundlauf und Mustermatt in a).
Kniest und Maslar in b).
Henrik Juel: C+ Popeye 4.61 (2023-12-30)
comment
Keywords: Minimal (B), under-promotion key, under-promotion (L,T), Checking key (in b), Round Trip (L-6,T/B-5), Rückkehr nach Umwandlung (B/T in b), Kniest Theme, Maslar theme (in b), Koshakin Theme (in a), Model mate (in a), Klasinc theme (B/T-k), Interchange (B/T-k in b), Twin
Genre: h#
FEN: 3kn3/2pP4/4q2b/3p2pp/7p/1bpp4/n1rp4/3K4
Input: Felber, Volker, 2023-06-17
Last update: Gunter Jordan, 2024-01-12 more...
14 - P1411357
Carlos de la Fe Dahlin
15167 Springaren 164 12/2022
P1411357
(2+6) C+
h#5
2.1...
1) 1. Tf5+ Kxf5 2. Te6 Kxe6 3. Ld7+ Kxd7 4. Lc7 Kxc7 5. Da2 Txa2#
2) 1. Lb6 Tc5 2. Tb2 Kf6 3. Kb8 Ke7 4. La7 Kd8 5. Tb7 Tc8#
play all play one stop play next play all
Yuri Bilokin: slip of the pen wKg5 8/k7/r7/b5K1/b7/q7/2R2r2/8 (2+6) (2023-08-04)
comment
Keywords: Aristocrat, Ideal mate (in 1), Minimal (T), Sacrifice of black pieces (in 1), Checking key (in 1), Selfblock (in 2)
Genre: h#
FEN: 8/k7/r5K1/b7/b7/q7/2R2r2/8
Input: Gunter Jordan, 2023-07-28
Last update: Gunter Jordan, 2023-07-28 more...
15 - P1413776
Brian Cook
2 The Problemist 29-3, p. 101, 05/2023
BOOM 2023
P1413776
(3+5) C+
h#6
2.1...
1) 1. Kxc2 d4 2. Lc1 d5 3. Te6 dxe6 4. Lb2 e7 5. Kc1 e8=D 6. c2 De1#
2) 1. Lc5+ Kxc3 2. Te5 Kb3 3. Kd2 Kb2 4. Ke3 Kc1 5. Kd4 Kd2 6. d5 c3#
play all play one stop play next play all
Henrik Juel: the last mate is ideal (2023-11-29)
more ...
comment
Keywords: Capture key (in 1), Entblockung, Promotion (D), Selfblock, Square vacation, Switchback (k), Klasinc theme (k-l), Model mate (in 1), Checking key (in 2), Ideal mate (in 2), Remote selfblock (in 2), Tschumakow Theme, Pawn mate (in 2)
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/8/3p4/8/1K6/2pPb3/2P5/2k1r3
Input: Felber, Volker, 2023-11-29
Last update: Gunter Jordan, 2024-03-26 more...
16 - P1414064
Viktor Zaitsev

5. Platz
8. Belarussische Meisterschaft 2013-14
P1414064
(5+16)
h#3
b) sKf5->f4
a) 1. Sd5+ Kxd2 2. Dg6 Tc3 3. Kf6 Tf3#
b) 1. Se2+ Kc4 2. Th4 Lc3 3. Kg3 Le5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-12-14)
comment
Keywords: discovered checkmate, Battery creation, Battery mates, double-check mate, Exchange of roles (T-L), Liniensperrung, Model mate, Checking key, Check Protection, Selfblock, x pieces move to one square, Bivalve
Genre: h#
FEN: 8/2prp1q1/4pn2/5kp1/1P2p1p1/1RK3nr/1BPp1bp1/5b2
Input: Gunter Jordan, 2023-12-14
Last update: Gunter Jordan, 2023-12-14 more...
17 - P1414201
Rolf Wiehagen
1478 Problemas 44, p. 1437, 10/2023
P1414201
(4+5) C+
h#3*
1. ... g3#
1. hxg2+ Ke1 (K~?) 2. g1=S Sg3 3. Sh3 Sf5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-12-27)
comment
Keywords: changed blocks, Fata Morgana (Typ Weber), Model mate, Rückkehr nach Umwandlung, Checking key, Capture key, Selfblock, under-promotion (s)
Genre: h#
FEN: 8/8/8/7p/5Ppk/7p/6Pp/5K1N
Input: Gunter Jordan, 2023-12-27
Last update: Gunter Jordan, 2023-12-27 more...
18 - P1414434
Marko Ylijoki
5061 idee & form 160 10/2023
P1414434
(2+7) C+
h#7
0.1.1...
b) wBc2->c7
a) 1. ... c3 2. Lg1 c4 3. f2 c5 4. f1=T c6 5. Tf8 c7 6. Tb8 c8=D 7. Sd4 Da6#
b) 1. ... c8=D+ 2. Db8 Dd8 3. Lg3 Kg1 4. Lc7 Kf2 5. Kb7 Ke3 6. Kc6 Ke4 7. Db6 Dd5#
play all play one stop play next play all
Yuri Bilokin: you can see a) 1.Bg1 c4 2.f2 c5 3.f1=R c6 4.Rf8 c7 5.Rb8 c8=Q 6.Sd4 Qa6#
1.Bg1 c3 2.f2 c4 3.f1=R c5 4.Rf7 c6 5.Ra7 c7 6.Sf4 c8=Q#
1.Bg1 c3 2.f2 c4 3.f1=R c5 4.Rf7 c6 5.Ra7 c7 6.Qe1 c8=Q#
1.Bg1 c3 2.f2 c4 3.f1=R c5 4.Rf7 c6 5.Ra7 c7 6.Qf2 c8=Q#
b) 1.Qg5 Kxh2 2.Qc5 Kh3 3.Kb7 Kg4 4.Kc6 c8=Q+ 5.Kd5 Kf5 6.Bd4 Qxe6#
1.Qg5 Kxh2 2.Kb7 Kh3 3.Qc5 Kg4 4.Kc6 c8=Q+ 5.Kd5 Kf5 6.Bd4 Qxe6#
1.Qg7 Kxh2 2.Kb7 Kh3 3.Kc6 c8=Q+ 4.Qc7 Kg4 5.Bc5 Kf5 6.Kd6 Qxe6#
1.Qg7 Kxh2 2.Kb7 Kh3 3.Kc6 c8=Q+ 4.Qc7 Kg4 5.Kd6 Kf5 6.Bc5 Qxe6# (2024-01-30)
comment
Keywords: Corner mate (in a), Epaulettenmatt (in b), Excelsior white (in a), Remote selfblock (in b), konsekutive Umwandlungen 2 (tD in a), Line closing (in a), Model mate, Checking key (in b), Selfblock, Promotion (D), Promotion key (in b), under-promotion (t in a), Minimal
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: k7/8/4n3/8/8/5pq1/2P2b1n/3b3K
Input: Gunter Jordan, 2024-01-11
Last update: Gunter Jordan, 2024-01-11 more...
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The problems of this query have been registered by the following contributors:

Gunter Jordan (9)
Marcin Banaszek (2)
Dieter Berlin (1)
Eberhard Schulze (4)
Felber, Volker (2)