Die Schwalbe

97 problem(s) found in 5695 milliseconds (displaying 97 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT A='Gruber, Lutz-Dieter' AND K='Schlüssel = Eckzug'] [download as LaTeX]

1 - P1015862
Hans Schaffer
Das große Kreuzworträtsel-Magazin 1941
P1015862
(4+3)
s#3
1. Ka1 c2 2. La2 c3 3. Sb2 cxb2#
play all play one stop play next play all
0440
SCHRECKE: C+, popeye 4.87 (2023-03-13)
comment
Keywords: Schlüssel = Eckzug, Corner mate, Pawn mate, Miniature
Genre: s#
FEN: 8/8/8/8/N1pR4/2p5/K7/1Bk5
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Gunter Jordan, 2023-03-13 more...
2 - P1016764
Vyacheslav Kopaev
Shakhmatnaya Kompozitsiya 01-03/1992
14. Moskauer Meisterschaft
2.-3. Platz
P1016764
(12+7) C+
s#2
1. De8? Sd8 2. Dxd8 Sb3#
1. ... Sa5 2. bxa5 Sb3#
1. ... Sc5 2. bxc5 Sb3#
1. ... Sd6!
1. Dc6? Ld7!
1. Df3? Lh3!
1. Dg2? Lg4!
1. Dh1! Ld7 2. Lxd7 Sb3#
1. ... Le6 2. Txe6 Sb3#
1. ... Lf5 2. Sxf5 Sb3#
1. ... Lg4 2. Txg4 Sb3#
1. ... Lh3 2. Txh3 Sb3#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.85 (2021-04-25)
comment
Keywords: Grab, Schlüssel = Eckzug, Multiple publication
Genre: s#
FEN: k1b5/pnP5/P7/1B4P1/1P2Q2N/3pR3/1PpP4/n1K3R1
Reprints: 13628 Schweizerische Schachzeitung 05/1992
Input: Frank Müller, 2004-05-12
Last update: Marcin Banaszek, 2021-04-28 more...
3 - P1051316
Walther Horwitz
Wiener Schach-Zeitung 1948
P1051316
(11+8) C+
#5
1. Da8! c4 2. Lb7 c3 3. Lg2 hxg2 4. Kg1 gxh1=D 5. Dxh1#
play all play one stop play next play all
Bei 3.Lg2 hxg2 wirkt die wD nicht mit, also Loydsche Linienräumung. Beim nachfolgenden 5.Dxh1 wird die wD wieder benötigt. Dies ist also Loydsche Linienräumung und Turton gleichermaßen.
more ...
comment
Keywords: Brian Stephenson Collection (36355), Line opening, Zugzwang-Goal, Schlüssel = Eckzug, Promotion (d), Antiphönix, Turton (DL), Loyd clearence
Genre: n#
Computer test: SCHRECKE: Gustav 4.1d
FEN: 6bq/5prk/B4Pp1/2p3P1/6P1/5QPp/2P1PP1K/7N
Reprints: 265 Rätselvolle Schachaufgaben , p. 142, 1980
Input: Brian Stephenson, 2004-08-12
Last update: Gunter Jordan, 2023-02-05 more...
4 - P1081154
Oskar Blumenthal
3182v Schachzeitung , p. 251, 08/1871
P1081154
(9+9)
s#4
Korrektur in Deutsche Schachzeitung 10/1872
1. Th8 Lb4 2. Sc3+ Lxc3 3. Da8+ La5 4. Dg8+ Txg8#
play all play one stop play next play all
Feldräumung und Bahnung
Original mit sBh5 statt h6
Henrik Juel: many duals, e.g., 2.Se7,Dh7 (2022-11-26)
comment
Keywords: white Bristol, Schlüssel = Eckzug, corner to corner (T), Batteriematt diagonal, discovered checkmate
Genre: s#
FEN: R7/1Q6/1p3p1p/b2NpP2/4K3/3NP3/kBB3r1/r6b
Input: HBae, 2009-02-06
Last update: Gunter Jordan, 2022-11-26 more...
5 - P1087435
Norbert Geissler
Die Schwalbe 2004
Spezialpreis
191. Thematurnier
P1087435
(3+16) C+
h#5
0.1...
1. ... Ta8 2. Dd7 Th8 3. Dg7 hxg7 4. Kb6 g8=D 5. Ka5 Dd8#
play all play one stop play next play all
First T-move waiting and hiding, second T-move waiting and hiding! Tryx 1. ... Tb6? 2.D beliebig ?? 3.Dg7, as in solution, but no second white waiting move!
Yuri Bilokin: For a complex idea, it was necessary to turn into a black rook, but what to do with the possibilities of building a final faster than h#4: 1.Qd7 Rb6 2.Qg7 hxg7 3.Kxb6 g8=Q 4.Ka5 Qd8#
1.Qd7 Ra8 2.Qg7 hxg7 3.Kb6 g8=Q 4.Ka5 Qd8#
1.Qd7 Rh8 2.Qg7 hxg7 3.Kb6 g8=Q 4.Ka5 Qd8# (2022-05-07)
comment
Keywords: Schlüssel = Eckzug, Tempo Loss, Line opening, corner to corner (T), Promotion (D), Phoenix, Anti-Bristol
Genre: h#
Computer test: Popeye Windows-32Bit v4.47 (100000 KB)
FEN: 1Rq5/n1k4p/p3p1pP/1p4pr/rb4Kp/5r2/8/3b2n1
Reprints: II mpk-Blätter 143 03/2022
Input: GüBü, 2009-06-08
Last update: Gunter Jordan, 2022-03-16 more...
6 - P1088830
Ivan Soroka
S924 The Problemist 09/1983
2. ehrende Erwähnung
P1088830
(12+2) C+
s#4
1. Th1! b6 2. Dg1 bxa5 3. Da1 a4 4. Tb1 axb3#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2a, Brute Force
Umwandlungsläufer wLa7! (2022-01-29)
more ...
comment
Keywords: Round Trip, white Bristol (reziprok TD/DT), Minimal (b), Schlüssel = Eckzug, Obvious promotion
Genre: s#
FEN: 8/Bp6/8/PP6/2kPP3/PR6/KP1P4/QR6
Input: Frank Müller, 2009-07-17
Last update: Gunter Jordan, 2022-11-26 more...
7 - P1098372
Jorma Pitkänen
The Problemist 01/2001
Neujahrsgruß
P1098372
(4+9)
s#14
1. a8=D+ Sf3 2. Dxf3+ Kg1 3. Lh2+ Kxh2 4. Kb4 Kg1 5. Kxc3 Kh2 6. Kd4 Kg1 7. Ke5 Kh2 8. Kf6 Kg1 9. Kg7 Kh2 10. Kh8 Kg1 11. Se2+ Kh2 12. Dg3+ Kh1 13. Sf4 c1=D,c1=~ 14. Dg2+ Txg2#
play all play one stop play next play all
Moldenhauer: Computerprüfung: C+ Gustav 4.1d 4 Tage 6 Std. 38 Min.
Gustav hat nur im 13. Zug Se2-f4 c2-c1D. Warum nicht c2-c1T? (2022-12-15)
Olaf Jenkner: Weil es schöner aussieht.
Man sieht alle Varianten, wenn "Züge nicht zusammenfassen" aktiviert ist. (2022-12-16)
Moldenhauer: Danke!! Ein Gutes Neues auch von mir!! (2022-12-16)
more ...
comment
Keywords: Königswanderung, Schlüssel = Eckzug, Promotion key, Promotion (D), discovered checkmate, Corner mate, Batteriematt diagonal
Genre: s#
FEN: 1B6/P7/8/8/8/Kpp5/prp5/bbN3nk
Reprints: 12) idee & form 154, p. 5215, 04/2022
Input: Frank Müller, 2010-01-22
Last update: Olaf Jenkner, 2022-12-16 more...
8 - P1102620
Camillo Gamnitzer
580 Variantim 02/1997
Israel Ringturnier 1996/97
Lob
P1102620
(10+10) C+
s#6
1. La8! droht 2. Sc3+ c6 3. Dg2+ hxg2#
1. ... c5 2. bxc4 droht 3. Sd4+ cxd4 4. Dd1+ Dxd1#
2. ... Sxc2 3. Dd3+ Se3 4. Sxf2+ Kxf2 5. Dxe3+ Kf1 6. Lg2+ hxg2#
2. ... Db4 3. Sd4+ cxd4 4. f8=D,T+ Dxf8 5. Sc3+ Dxa8 6. Dg2+ hxg2#
play all play one stop play next play all
Anton Baumann: es muss heissen:
2. ... Db4 3.Sd4+ cxd4 4.f8=D,T+ Dxf8 5.Sc3+ Dxa8 6.Dg2+ hxg2# (2022-11-14)
Henrik Juel: C+ Popeye 4.61, except for the promotion dual 4.f8=DT+ (2022-11-20)
comment
Keywords: Schlüssel = Eckzug, Corner mate
Genre: s#
FEN: 8/2p2P2/8/pp1B4/q1p1N1p1/nP3kPp/2NP1p1P/5Q1K
Input: Frank Müller, 2010-04-05
Last update: Marcin Banaszek, 2022-11-27 more...
9 - P1120864
Manfred Zucker
Wochenpost 51 14/12/1979
P1120864
(4+3)
#5
1. Sh8! Lc1 2. Sg6 Lg5 3. Kb7 Lc1 4. Sxh4 ... 5. Lg2#
3. ... Ld8 4. Sf4 ... 5. Lg2#
1. ... Lc7 2. Sg6 Lg3 3. Kb7 Lb8 4. Sxh4 ... 5. Lg2#
3. ... Le1 4. Sf4 ... 5. Lg2#
play all play one stop play next play all
Unschwer ist zu sehen, daß in dieser Miniatur zwei weiße Figuren den schwarzen König erst einmal in der Ecke festhalten müssen. Folglich muß Verstärkung heran und dabei der Lf4 ausmanövriert werden. Am Ende steht ein Mustermatt.
(MZ497)
Henrik Juel: C+ Popeye 4.61 (2021-03-14)
comment
Keywords: Schlüssel = Eckzug, Miniature, Focus, Model mate
Genre: n#
FEN: K7/5N2/8/8/5b1p/5N1B/8/7k
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2023-04-26 more...
10 - P1121891
Michael McDowell
1973 Problemkiste (54) 01/1988
P1121891
(4+3) C+
#5
1. Ta1 b6 2. Le1 b5 3. La5 b4 4. Kc1 Kc3 5. Ta3#
play all play one stop play next play all
CH-LB* IM
vf: +wBe3, -sBd4, Andrei Seliwanow, 10.1997, Smena (Moskwa)
Felber, Volker: siehe dazu auch die Nachläufer unter P1121891 und P1411093 (2023-07-24)
comment
Keywords: Miniature Collection (0343097), Schlüssel = Eckzug, Miniature, Indian, pin-mate, Ideal mate
Genre: n#
Computer test: %Popeye FreeBSD-4.3-RELEASE-32Bit-Version 3.75
FEN: R7/1p6/8/8/3p4/1k1P4/3B4/1K6
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-07-24 more...
11 - P1123583
Nikolay S. Zinovyev
10694 Ideal-Mate Review 78 04/2000
P1123583
(5+2)
#4
1. a8=L Ka6 2. Ka3 Kb5 3. Lb7 Kc4 4. Sd6#
play all play one stop play next play all
SX3L IM BUL4
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-12-06)
comment
Keywords: Miniature Collection (0328371), under-promotion key, under-promotion (L), Miniature, Minimal (b), Schlüssel = Eckzug, Ideal mate, Switchback (k)
Genre: n#
FEN: 2N5/P7/1B6/1k6/8/1K1p4/3P4/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2023-12-06 more...
12 - P1126620
Manfred Zucker
8212 Schach-Echo 1, p. 14, 01/1975
P1126620
(4+3) C+
#4*
* 1. ... Kd6 2. Sg4 Kd5 3. Sxf6+ Kd6 4. Te6#

1. Sh1! Kd6 2. Sg3 Kd5 3. Le6+ Kd6 4. Sf5#
play all play one stop play next play all
(MZ359)
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-03-10)
comment
Keywords: Miniature, Model mate, Schlüssel = Eckzug (S)
Genre: n#
FEN: 8/1p6/1K3p2/3k1B2/4R3/8/5N2/8
Input: Felber, Volker, 2010-09-11
Last update: James Malcom, 2021-03-10 more...
13 - P1131309
Albert S. Schachnasarjan
1775 Kudesnik 78 04/2003
P1131309
(5+2)
#3
1. Sa8 Kb5 2. Sc7+ Kc5 3. b4#
2. ... Ka4 2. b3#
1. ... Kd5 2. Sc7+ Kc5 3. b4#
play all play one stop play next play all
A10BB+ mm
SCHRECKE: C+, popeye 4.87 (2023-04-10)
comment
Keywords: Miniature Collection (0326259), Minimal (b), Miniature, Pawn mate, Schlüssel = Eckzug, Flight-giving key
Genre: 3#
FEN: 8/8/1Np5/2k5/2N5/2K2P2/1P6/8
Input: Felber, Volker, 2010-09-11
Last update: Gunter Jordan, 2023-04-10 more...
14 - P1137010
Gunter Jordan
1385 Rochade Europa 07/1997
P1137010
(4+2) C+
#10
Köko
1. Sa1 Kxa1 2. Lxa2 Kb1 3. Lc4 Kc2 4. Sc5 Kc3 5. Lb5 Kb4,Kd4 6. Sb7 Ka4,Kc4 7. Kc7 Kb4 8. La6 Kb5 9. Sd8 Ka5 10. Sc6#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.85 (2020-10-09)
comment
Keywords: Miniature Collection (0074230), Schlüssel = Eckzug, Köko
Genre: Fairies
FEN: 2K3B1/8/8/8/8/1N1N4/p7/1k6
Input: Felber, Volker, 2010-09-11
Last update: Marcin Banaszek, 2020-10-12 more...
15 - P1150197
Knud H. Hannemann
1606 Skakbladet 10/1918
P1150197
(5+2) C+
#3
1. Ta1! Kh4 2. Th1 Kg5 3. h4#
1. ... h4 2. Tg1+ Kh5 3. Lg6#
play all play one stop play next play all
B3f mm
vf: Wladimir Swergunow, 1993, Wodnik Kareli
more ...
comment
Keywords: Miniature Collection (0329571), Minimal (b), Miniature, corner to corner (T), Pawn mate, Model mate, Schlüssel = Eckzug
Genre: 3#
Computer test: SCHRECKE: popeye 4.89
FEN: R5N1/8/8/5Bkp/4K3/8/7P/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Dieter Berlin, 2024-03-06 more...
16 - P1151198
Wolfgang Alexander Bruder
2805 Rhein-Neckar-Zeitung 24/12/2005
P1151198
(5+1) C+
#4
1. Ta1! Kb4 2. Kd4 Kb3 3. Sc4 Kb4 4. Tb1#
3. ... Kc2 4. La4#
1. ... Kb6 2. Kd6 Kb7 3. Lc6+ Kb8,Kc8 4. Ta8#
3. ... Kb6 4. Sc4#
play all play one stop play next play all
PB-d4
more ...
comment
Keywords: Miniature Collection (0330429), Aristocrat, Miniature, Rex solus (s), Symbol problem (Weihnachtsbaum), Schlüssel = Eckzug, Switchback (k)
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/3B4/8/2k1K3/8/8/1N3N2/3R4
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2022-11-19 more...
17 - P1156211
Viktor S. Kolpakov
1093 Temp-64 20/07/1995
P1156211
(3+3)
#4*
* 1. ... Kh1 2. Lf1 Kh2 3. Sxf3+ Kh1 4. Lg2#
1. Lg4 Kh1 2. Lxf3+ Kh2 3. Lg2 f3 4. Sxf3#
play all play one stop play next play all
SfL
SCHRECKE: C+, Gustav 4.2e, Brute Force (2024-01-16)
comment
Keywords: Miniature Collection (0345781), Miniature, Schlüssel = Eckzug (im *), Switchback (k), Exchange of roles (L-S)
Genre: n#
FEN: 8/8/8/8/5p2/5p1B/5K1k/6N1
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2024-01-16 more...
18 - P1167378
Ladislav Salai
4138 Problem 194-197 12/1979
P1167378
(6+1)
#2
1. Dh8
play all play one stop play next play all
A14DB
SCHRECKE: C+, popeye 4.87
1.Dh8! (Zugzwang)
1. ... K:d7,K:f7 2.e8D#
1. ... K:e7 2.De8#
1. ... Kd5 2.De5# (2022-07-25)
comment
Keywords: Miniature Collection (0312222), Rex solus (s), Miniature, Schlüssel = Eckzug
Genre: 2#
FEN: 4Q3/3PPN2/4k3/6K1/8/8/8/2R5
Input: Zuncke/Bruder, 2010-09-12
Last update: Gunter Jordan, 2022-07-25 more...
19 - P1174315
Bernhard Schauer
629 Die Welt 28/05/1960
P1174315
(4+2)
#4
1. Tf1? Lf7!

1. Ta1! Lc6 2. Tf1 Lf3 3. e6 La8 4. Tf8#
play all play one stop play next play all
D27a ROn-L
vf: a1<>h1, Bernhard Schauer, 08.12.1988, STERN 50/88, #1238
Henrik Juel: C+ Popeye 4.61, except for some mate duals (2022-11-18)
comment
Keywords: Miniature Collection (0087601), Miniature, Minimal (l), Schlüssel = Eckzug, Corner mate, Logical Problem
Genre: n#
FEN: 4b2k/7P/7K/4P3/8/8/8/4R3
Input: Felber, Volker, 2010-09-12
Last update: Gunter Jordan, 2022-11-19 more...
20 - P1186033
Leonid Ivanovich Kubbel
source? 1911
P1186033
(11+6) C+
s#3
1. La8 Db7,Dxa8 2. Df4+ De4 3. Sc2+ dxc2#
1. La8 Dc8,Dc7 2. Dc4+ Dxc4 3. Se2+ dxe2#
1. La8 Dxd8 2. Df4+ Se4 3. Df2+ Sxf2#
play all play one stop play next play all
more ...
comment
Keywords: Domination, Echo, Schlüssel = Eckzug
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 1q1R4/p4Q2/PpBn4/1R6/3k4/1P1p4/3P2P1/2NKN3
Input: Frank Müller, 2011-01-29
Last update: Dieter Berlin, 2024-02-21 more...
21 - P1202686
Aleksandr Kakovin
Nikolay Budkov

4547v Schach , p. 93, 03/1964
P1202686
(8+8)
s#2
1. La1! Txd8+ 2. Td7+ b2#
1. ... Te8 2. Te7+ b2#
1. ... Tf8 2. Tf7+ b2#
play all play one stop play next play all
Korrektur (-wBa3) 07/1964, Seite 220. Unter Nr. 4602 nochmals mit wBa3 erschienen.
Henrik Juel: 10 threats
the only correct variation is 1... Txd8+
after 1... Te8,Tf8 all threats work (2022-11-29)
comment
Keywords: Schlüssel = Eckzug, Critical move
Genre: s#
FEN: 3R2rk/6Rp/7N/1p6/bP1B4/1p2p3/4Pp2/3K1N2
Input: Frank Müller, 2011-09-17
Last update: Felber, Volker, 2022-11-29 more...
22 - P1225557
Erwin Reinhofer
2246 Badische Neueste Nachrichten 18/01/1986
P1225557
(6+7)
#4
1. Ta1! Kxe5 2. Lf4+ Kf5 3. Tg1
1. ... Kxg5 2. Sxg6 ... 3. Th1
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-06-28)
comment
Keywords: Schlüssel = Eckzug, corner to corner (T)
Genre: n#
FEN: 5b2/4pKp1/4p1p1/4NkB1/8/4PB2/p7/5R2
Input: Felber, Volker, 2011-11-25
Last update: Gunter Jordan, 2023-06-28 more...
23 - P1244396
Peder Andreas Larsen
Tidskrift för Schack 11/1911
2. Preis geteilt
P1244396
(10+10) C+
s#4
1. Da1! droht 2. Td4+ Lc4 3. Db2+ axb2 4. a3+ Kxa3#
1. ... Lxd5 2. Lf8+ Td6 3. Txg4+ Lc4 4. Ke1 d2#
3. ... Le4 4. Kc1 d2#
1. ... Lxd7 2. Txb5+ Lxb5 3. Db2+ axb2 4. a3+ Kxa3#
play all play one stop play next play all
more ...
comment
Keywords: Anti-Kritikus, ambush (zweifach), Schlüssel = Eckzug, Pawn mate
Genre: s#
Computer test: SCHRECKE: Gustav 4.2a
FEN: 7Q/3N4/1p2b1rB/bp1R2R1/1k4p1/p2pN1p1/P2K2P1/3B4
Reprints: 341 Versunkene Schätze , p. 143, 1998
Input: Frank Müller, 2012-07-11
Last update: Dieter Berlin, 2022-10-15 more...
24 - P1268550
Michel Olausson
7054 Springaren 12/1991
1. Lob
P1268550
(7+5) C+
s#4
1. Da8! b1=S 2. a4 Sa3 3. Da6+ Sb5,Sc4 4. axb5,Db5 c2#
1. ... b1=L 2. Dg8 La2 3. Db3 Lb1 4. Dc2+ Lxc2#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2a, Brute Force (2021-12-21)
comment
Keywords: Schlüssel = Eckzug, under-promotion B/S
Genre: s#
FEN: 8/3p4/3N4/P4N2/1P6/P1pk4/1p1p4/3K3Q
Input: Frank Müller, 2013-04-26
Last update: Marcin Banaszek, 2021-12-30 more...
25 - P1268856
Oleksandr B. Tsaplin
3255 idee & form , p. 3907, 04/2013
P1268856
(2+3) C+
h#5
1. Th1 Kd6 2. Ke2 Ke5 3. Kf1 Kf4 4. Kg1 Kg3 5. f1=L Lf2#
play all play one stop play next play all
more ...
comment
Keywords: Minimal (L), under-promotion (l), Schlüssel = Eckzug, Selfblock, Ideal mate, Remote selfblock, Miniature
Genre: h#
Computer test: Gustav 4.2a, Brute Force
FEN: 8/2K5/7r/8/8/8/5p2/3kB3
Input: Felber, Volker, 2013-04-29
Last update: Alfred Pfeiffer, 2022-08-01 more...
26 - P1291430
Jozsef Bajtay
886 Allgemeine Zeitung Chemnitz 22/07/1928
P1291430
(4+11)
s#2*
* 1. ... Lg2,Lh3 2. Dxe2+ Txe2#

1. Dh1! Lg2,Lh3 2. Dxe1+ dxe1=D#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-11-16)
comment
Keywords: Schlag Satzmattfigur, Schlüssel = Eckzug, discovered checkmate, Batteriematt diagonal, Changed continuation, Fata Morgana (Typ Weber)
Genre: s#
FEN: 8/8/8/3ppp1Q/4p3/4K3/1p1ppB2/1Bbkrb2
Input: Felber, Volker, 2014-11-25
Last update: Gunter Jordan, 2023-11-16 more...
27 - P1291656
Rudolf Forsberg
14162 Tidskrift för Schack 03-04/1982
P1291656
(7+9) C+
s#2
1. Sa1! droht 2. Db3+ cxb3#
1. ... Te2 2. Dxc4+ Dxc4#
1. ... Sd4 2. Dxc4+ Lxc4#
1. ... Sd3 2. Sc5+ Sxc5#
play all play one stop play next play all
more ...
comment
Keywords: Schlüssel = Eckzug, discovered checkmate
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/PN6/KP6/5n2/k1p1rq2/p1B5/Q1N2np1/5b2
Input: Frank Müller, 2014-11-29
Last update: Marcin Banaszek, 2024-02-16 more...
28 - 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...
29 - P1372732
Zlatko Mihajloski
H4257 The Problemist 27-4, p. 153, 07/2019
2. Lob
Abt. h#n
PR Viktoras Paliulionis
P1372732
(2+4) C+
h#8
0.1.1...
1. ... La1 2. Th7+ Kg8 3. Lh8 Lg7 4. Sh5 Kf7 5. Kf4 Ke6 6. Kg5 Lf6+ 7. Kh6 Kf5 8. Lg7 Lg5#
play all play one stop play next play all
Yuri Bilokin: you can see 1.Rh7+ Kg8 2.Bh8 Bg7 3.Sh5 Kf7 4.Kf4 Ke6 5.Kg5 Bf6+ 6.Kh6 Kf5 7.Bg7 Bg5# (2023-01-02)
comment
Keywords: Aristocrat, Minimal (L), Miniature, Schlüssel = Eckzug
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 7K/6r1/8/8/5n2/2b1k3/1B6/8
Input: Felber, Volker, 2020-02-17
Last update: Gunter Jordan, 2023-03-09 more...
30 - P1379507
Torsten Linss
1533 Julias Fairies 29/08/2020
3. Lob, JF II/2020 (Hans Gruber)
P1379507
(4+2) C+
hs#11.5
1. ... La1 2. f4 Kb2 3. Kf6 Kb3+ 4. Kg5 Ld4 5. f5 Kc4 6. f6 Kd5 7. f7 Le5 8. f8=D Ke6 9. Dc5 Kf7 10. h7 Lh8 11. Kh6 Kf6 12. Dh5 Lg7#
play all play one stop play next play all
James Malcom: Is this longest known hs#? It's the longest I found on PDB. (2021-01-01)
Vitaly Medintsev: Take a look at P1388768 :) (2021-07-11)
SCHRECKE: See P1384353 (2021-07-11)
comment
Keywords: Excelsior white (D), Round Trip (b linear), Critical move, Schlüssel = Eckzug, Model mate, Indian, Check Protection, Liniensperrung, Minimal (l), Promotion, corner to corner (l), Selfblock, Miniature
Genre: Fairies
FEN: 8/4K1b1/7P/8/4R3/8/5P2/2k5
Input: TLi, 2020-08-30
Last update: TLi, 2022-06-12 more...
31 - P1380169
Vasily I. Chernykh
37 64-Shakhmatnoe obozreniye 05/2020
P1380169
(5+1) C+
#2
1. Tc8? Kd7 2. Dh3# 1. ... Kf7!
1. Tg8? Kf7 2. Dd5# 1. ... Kd7!

1. Da8! Kf7 2. Dg8#
1. ... Kd7 2. Dc8#
1. ... Kf5 2. De4#
play all play one stop play next play all
more ...
comment
Keywords: Rex solus (s), Schlüssel = Eckzug, corner to corner (D), Miniature
Genre: 2#
Computer test: Popeye 4.61
FEN: 7R/4B3/3Pk3/8/8/3K4/8/7Q
Input: Rainer Staudte, 2020-09-22
Last update: Alfred Pfeiffer, 2020-09-23 more...
32 - P1382584
Reinhardt Fiebig
PS3535 The Problemist Supplement 166, p. 79, 05/2020
P1382584
(2+7) C+
h#5
0.1.1...
1. ... Db2-h8 2. Ld8 Dxf8 3. Le7 Db8 4. Kg7 Db2+ 5. Kf8 Db2-h8#
play all play one stop play next play all
Meeraner, Urform, Themafigur: wD
Henrik Juel: Roundtrip by Db2 (2020-11-29)
comment
Keywords: Minimal (D), Schlüssel = Eckzug, Round Trip (D-4+1), Meerane-Thema, Klasinc theme (D-k), Model mate, Remote selfblock, Kniest Theme
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 5n2/5p2/3n2k1/b1p4p/8/8/1Q6/K7
Input: Felber, Volker, 2020-11-29
Last update: Gunter Jordan, 2021-04-15 more...
33 - P1383311
Jochen Schröder
18225 Die Schwalbe 303 06/2020
P1383311
(4+7) cooked
hs#9 0.1;1.1;...
1. ... La8 2. Kf2 Kb7 3. Kf3 hxg3 4. Ke4 Ka7+ 5. Kxd4 Lh1 6. Kc5 g2 7. Kc6 g1=D+ 8. Kc7 La8 9. Lc5+ Dxc5#
play all play one stop play next play all
SCHRECKE: 1. ... La8 2.Kf2 Kb7 3.Kf3 h:g3 4.Ke4 Ka7+ 5.K:d4 Lh1 6.Kc5 g2 7.Kc6 g1D+ 8.Kc7 La8 9.Lc5+ D:c5#
Nebenlösungen (von den Schwalbe-Lösern KHS+WW gefunden):
1. ... La8 2.g4 Kb7 3.Kh1 h3 4.g5 h2 5.g6 a5 6.g:f7 Sd7 7.Lc5 Sf6 8.f8D Sg4 9.Dc8+ K:c8#
1. ... Se5 2.La3 Sc4 3.d:c4 La8 4.c5 Se6 5.c6 Sf4 6.c7 Kb7 7.Lc5 h:g3 8.Kh1 Se2 9.c8D+ K:c8# (2020-12-26)
comment
Keywords: Promotion (d), corner to corner (l), Schlüssel = Eckzug, Indian, Switchback (l), Rücknahme Schlüsselzug
Genre: Fairies
FEN: 2k2n2/5n2/p2B4/8/3p3p/3P2P1/8/6Kb
Input: Gerd Wilts, 2020-12-23
Last update: Gunter Jordan, 2020-12-27 more...
34 - P1384273
Zlatko Mihajloski

JT Aleksey Borisenko-80 2017
2. Preis
P1384273
(2+12)
h#6
1. Dh1 Ld8 2. Kg2 Ke7 3. Kf3 Kf6 4. Ke4 Kg5 5. Ke5 Le7 6. De4 Lf6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2020-12-27)
comment
Keywords: black Bristol, white Bristol, Klasinc theme (L-K, d-k), Minimal (L), Switchback (Ld), Schlüssel = Eckzug, Selfblock, Tempo Loss
Genre: h#
FEN: 7n/3K4/3ppBp1/3p4/3pq3/1n1rp3/5b2/6k1
Input: Gunter Jordan, 2020-12-27
Last update: Alain Brobecker, 2021-10-22 more...
35 - P1385407
Jan Weininger
Sachove umeni 2015
P1385407
(9+7)
#12
1. Ta8! a2 2. Txa2+ bxa2 3. Kxc2 droht 4. Dd1#
3. ... Txf3 4. g8=D droht 5. Dg1#
4. ... Tg3 5. Dxa2+ Kxa2 6. fxg3 Ka1 7. g4 Ka2 8. g5 Ka1 9. g6 Ka2 10. g7 Ka1 11. g8=T Ka2 12. Ta8#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2021-01-16)
comment
Keywords: corner to corner (T), Excelsior white, Phoenix, Schlüssel = Eckzug, Siegfried Theme (t), Promotion (D), under-promotion (T)
Genre: n#
FEN: 7R/2p3P1/2P5/8/3p4/pp1P1Q1r/1PpP1P2/k1K5
Input: Gunter Jordan, 2021-01-16
Last update: Rainer Staudte, 2021-02-27 more...
36 - P1385912
Leonid Ivanovich Kubbel
Deutsche Schachzeitung 1910
P1385912
(6+5) C+
#5
1. Ta1! Ka8 2. Ka4 Ka7 3. Ka3 ... 4. Ka2 ... 5. Kb1#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-01-27)
comment
Keywords: discovered checkmate, white Bristol, Batteriematt vertikal, Königsbatterie, Model mate (Gnaden-), Schlüssel = Eckzug
Genre: n#
Computer test: C+, Gustav 4.1d, Brute Force
FEN: 8/k1p5/2p1p3/K1p1P3/R1P5/1R6/1P6/8
Reprints: 6 Die Schwalbe 288A, p. lxxx, 12/2017
Input: Gunter Jordan, 2021-01-27
Last update: Gunter Jordan, 2021-01-27 more...
37 - P1386489
Aurel M. Karpati
Adrian Storisteanu
Yuri Bilokin
Hans-Jürgen Manthey
Viktoras Paliulionis
Andrew Buchanan

PDB Website 15/02/2021
AK, correction AS, YB, HJM, VP & AB
P1386489
(7+4) C+
h#5
1. b2xa1=S Sc4 2. Sxb3 Se3 3. Sd4 Lc4 4. Sdf3 Lf1 5. Sg1 Lg2#
play all play one stop play next play all
corrects and simplifies P0552475
A.Buchanan: Please forgive me but I think “under-promotion” is only meaningful for directmates and studies. That’s why I had put in promotion as a keyword, not under-promotion. In helpmates, promotions need to be distinguished of course, and we can put in the officer type in the parameter slot. Under-promotion would still need such a parameter because it’s inexact itself: the worst of all worlds. Even for directmates and studies of course some people consider knight promotion not to be an under-promotion at all, but I wouldn’t go that far myself. There are far too many keywords covering promotion, and at some time we should clean them up, but in the mean time I am open to considering another opinion if it is explained to me. Thank you. (2021-02-15)
more ...
comment
Keywords: Promotion (s), Schlüssel = Eckzug, Promotion key (s), Corner mate, Selfblock, Model mate, Entblockung
Genre: h#
Computer test: Popeye v4.85
FEN: 8/8/1N6/3P4/8/1Pp5/BpP4n/NK5k
Input: A.Buchanan, 2021-02-15
Last update: A.Buchanan, 2021-02-18 more...
38 - P1386591
Manfred Ernst
Valery Barsukov

2033v Gaudium 228 15/07/2020
P1386591
(7+4)
s#6
Längstzüger
1) 1. Se4! Lh8 2. Ta5+ Kxb4 3. Th5 La1 4. Sc3+ Kxc3 5. Th2 Lb2 6. Tc2+ dxc2#
2) 1. Kxa1! d2 2. Td4 d1=S,d1~ 3. Txd1 Kxb4 4. Sd3+ Kc3 5. Tf4 Kc2 6. Sb2 axb2#
play all play one stop play next play all
Dies ist die optimierte Fassung, welche den vorherigen Einspänner ersetzt. Veröffentlicht in G 240, 30.04.21. Der Ko-Autor VB kam neu hinzu.
Henrik Juel: 2 solutions is missing in the stipulation (2022-06-11)
Henrik Juel: C+ Popeye 4.61 (2022-06-11)
comment
Keywords: Batterietransformation (in 1), Maximummer, Switchback (Tl), corner to corner (l in 1), Discovered check, Pawn mate, Model mate, Schlüssel = Eckzug (in 2), Capture key (in 2)
Genre: Fairies
Computer test: Popeye Windows-64Bit v4.79 (4096 KB)
FEN: 8/8/8/5R2/kP3RP1/p2p4/P4N2/bK6
Input: Gunter Jordan, 2021-02-18
Last update: Gunter Jordan, 2022-06-11 more...
39 - P1386911
Manfred Zucker
6626 Schach , p. 189, 06/1971
In memoriam Kurt Galke (8.7.1891-28.3.1971)
P1386911
(3+3) C+
s#8
Längstzüger
1. h8=T+! Kb7 2. Dc7+ Ka6 3. Dc8+ Sb7 4. Th3 Kb6 5. Db8 a5 6. Ta3 Kc5 7. De5+ Kb6 8. Dc5+ Sxc5#
play all play one stop play next play all
Ein reizender Sechssteiner mit T-Unterverwandlung, Damenopfer und Idealmatt
(MZ239)
Henrik Juel: Popeye 4.61 with 'opt non 0 1' found no flaws (2021-03-01)
Henrik Juel: Actually C+ Popeye 4.61 (1 hour) (2021-03-01)
comment
Keywords: Miniature, Maximummer, Queen sacrifice, Ideal mate, under-promotion key (T), Schlüssel = Eckzug, Checking key
Genre: Fairies
FEN: k7/p6P/8/n7/K7/8/7Q/8
Input: Felber, Volker, 2021-03-01
Last update: Marcin Banaszek, 2021-03-07 more...
40 - P1388370
Erich Bartel
323 Hobelspäne (3) 09/04/2021
P1388370
(2+6) C+
h#3
1. Lc5 Lh8 2. Ke3 Sg7 3. Kd4 Sf5#
play all play one stop play next play all
totale Bahnüberschreitung a1h8
more ...
comment
Keywords: Indian, Schlüssel = Eckzug, corner to corner (L), Selfblock, discovered checkmate, Batteriematt diagonal, Battery creation, Illegal position (no wK)
Genre: h#
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-04-10)
FEN: 8/8/4N3/3p4/2p1p3/3p4/3k4/B5b1
Input: Erich Bartel, 2021-04-10
Last update: A.Buchanan, 2023-12-11 more...
41 - P1388581
Mikhail Chernushko
8590 Seven Chess Notes 2020
1. ehrende Erwähnung
P1388581
(3+4) C+
#5
1. La1 Kxa1 2. h8=D+ Kb1 3. Dh1+ Kb2 4. Dc1+ Kb3 5. Dc3#
1. ... a3 2. h8=T Kxa1 3. Kc3 d2 4. Th1+ d1=D 5. Txd1#
play all play one stop play next play all
more ...
comment
Keywords: Exchange of Promotions (D-T), Miniature, Schlüssel = Eckzug, Flight giving sacrifice key, under-promotion (T), Promotion (D), corner to corner (D), Epaulettenmatt, Corner mate, Model mate (Gnaden-)
Genre: n#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-04-15)
FEN: 7B/7P/8/8/p7/3p4/p2K4/1k6
Input: Rainer Staudte, 2021-04-15
Last update: Alfred Pfeiffer, 2021-07-09 more...
42 - P1388589
Vladimir N. Kovalenko
8957 Seven Chess Notes 2020
6. Preis
P1388589
(4+3) C+
#4
1. Dh1! droht 2. Db7 droht 3. Db4+ Kd3 4. De4#
2. ... Kd4 3. De4+ Kc5 4. Db4#
1. ... Kb3 2. Db1+ Kc4 3. Db4+ Kd3 4. De4#
2. ... Ka4 3. Db4#
2. ... Ka3 3. Lb4+ Ka4 4. Lc6#
1. ... Kb5 2. De1 ... 3. Db4+ Ka6 4. Db6#
play all play one stop play next play all
more ...
comment
Keywords: Miniature, Schlüssel = Eckzug
Genre: n#
Computer test: SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-04-15)
FEN: B5b1/8/8/B6Q/2k3p1/6K1/8/8
Input: Rainer Staudte, 2021-04-15
Last update: Alfred Pfeiffer, 2021-07-09 more...
43 - P1388859
Volker Gülke
18326 Die Schwalbe 305 10/2020
2. Lob
PR Wassyl Djatschuk
P1388859
(11+13) C+
s#3
1. Da8! droht 2. Tc6+ Kd5 3. Txc4+ Tb7#
1. ... gxf5 2. Td7+ Ke6 3. Da6+ Tb6#
1. ... Sf7 2. Tb6+ Sd6 3. Tb5+ Txb5#
1. ... Shxf5 2. Txf6+ Sd6 3. Te6+ Kxe6#

1. ... fxg5 2. Td7+ Kf6 3. Da6+ Tb6#
play all play one stop play next play all
Gunter Jordan: Ein 2. Lob für dieses Meisterwerk ist eher peinlich. (2024-01-19)
comment
Keywords: Motivinversion (simultan), Schlüssel = Eckzug, Battery play, Discovered check, Black correction, Batteriematt diagonal, discovered checkmate, Königsbatterie
Genre: s#
Computer test: Popeye 4.83
FEN: 1N5b/2B5/3R1ppn/p3kBP1/2p4N/2KpnQP1/rr1PR3/qb6
Input: Schwalbe, 2021-04-21
Last update: Gunter Jordan, 2024-01-19 more...
44 - P1388876
Ulrich Voigt
18346v Die Schwalbe 305 10/2020
4. Preis
Abt. h#3,5-n
PR Fadil Abdurahmanovic
P1388876
(2+8) C+
h#7
0.1.1...
1. ... La1 2. Db8 Kb2 3. La7 Kc3 4. Tb6 Kd4 5. Sd6 Ke5 6. Kh8 Kf6 7. Lg8 Kg6#
play all play one stop play next play all
Wurde ursprünglich als h#6 mit wLa1 veröffentlicht (1.Db8 usw.).
more ...
comment
Keywords: Aristocrat, Minimal (L), Batteriematt diagonal, Battery creation, discovered checkmate, Corner mate, blocking of a piece, Liniensperrung, Check Protection, corner to corner (L), Schlüssel = Eckzug
Genre: h#
Computer test: H. Juel: popeye 4.61
FEN: r5kB/5n2/7r/3b4/1n6/8/5b1q/1K6
Input: Schwalbe, 2021-04-21
Last update: Olaf Jenkner, 2023-10-15 more...
45 - P1391691
Eduard Kadourek

P1391691
(6+3) C+
s#2
1. Dh8! (Zugzwang)
1. ... Lxg2 2. Ta2 Lxf3#
1. ... Lxe2 2. g4+ Lxf3#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2021-07-13)
comment
Keywords: Schlüssel = Eckzug
Genre: s#
FEN: K7/B7/8/7Q/8/5B2/4R1Pb/5b1k
Reprints: 32 Straz Lidu 15/05/1949
Input: Mario Richter, 2021-07-13
Last update: Marcin Banaszek, 2021-07-15 more...
46 - P1392464
Valery Surkov
G39-42 feenschach 232 10/2018
P1392464
(5+2) C+
s#10*
1. ... Kd6 2. Sce8+ Kc5 3. Dd3! Kc6 4. Dc2+ Tc4 5. Da4+ Txa4#

1. Sa8! Kd6 2. De2! Kc5! 3. Dd3! Kc6 4. Dc2+ Kd6! 5. De4! Kc5 6. Sc7! Kd6 7. Sce8+ Kc5 8. Dd3! Kc6 9. Dc2+ Tc4 10. Da4+ Txa4#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.1d, Brute Force (2021-08-04)
comment
Keywords: Minimal (t), Aristocrat, Miniature, Schlüssel = Eckzug, Rücknahme Schlüsselzug, Switchback (DSk), Model mate, Round Trip (Dk)
Genre: s#
FEN: 8/2N5/K4N2/2k5/1r2Q3/B7/8/8
Input: Rainer Staudte, 2021-08-04
Last update: Marcin Banaszek, 2021-08-06 more...
47 - P1392541
Valery Dubrovsky
758 Leninski Sawet 204 10/02/2011
P1392541
(3+3)
#3
1. Dh8! droht 2. Dxe8+ Sd8 3. Dxd8#
1. ... Sbd6 2. Dh1+ Se4 3. Dxe4#
2. ... Sb7 3. Dxb7#
1. ... Sd8 2. Dh1+ Sb7 3. Dxb7#
2. ... Sc6 3. Dxc6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2021-08-07)
comment
Keywords: Miniature, Corner mate, Schlüssel = Eckzug, corner to corner (D)
Genre: 3#
FEN: k3n3/Pn6/1K6/8/8/8/8/Q7
Input: Rainer Staudte, 2021-08-07
Last update: Gunter Jordan, 2021-08-07 more...
48 - P1392870
Sebastian Mühltaller
Illustrierter Beobachter 25, p. 987, 18/06/1936
P1392870
(6+6)
#3
1. Ta1! d5 2. Ke6 dxc4 3. Sf5#
1. ... d6 2. Ta4 d5 3. Sf5#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2021-08-16)
comment
Keywords: Schlüssel = Eckzug
Genre: 3#
FEN: 8/3p1K2/8/2p5/2Nkp3/3pN3/1P1p4/1R1B4
Input: Rainer Staudte, 2021-08-16
Last update: Gunter Jordan, 2024-02-08 more...
49 - P1394489
Michael Schreckenbach
2148 Gaudium 239 31/03/2021
Lob
Abt. Drei- und Mehrzüger
PR Hans Gruber
P1394489
(8+4)
#3
4.1...
* 1. ... Kxe4 2. Tb4+ Sc4 3. Txc4#
1) 1. Lb1! a5 2. Tc2 Ke4 3. Tc4#
2) 1. La8! a5 2. Tb7 Ke4 3. Tb4#
3) 1. Lh1! a5 2. Tg2 Ke4 3. Tg4#
4) 1. Lh7! a5 2. Tg6 Ke4 3. Tg4#
play all play one stop play next play all
Für alle 4 Lösungsphasen gilt: 2.Td2? S~ 3.Td4#, aber 2. .. Sg4! [Autor]
Henrik Juel: C+ Popeye 4.61 also (2021-10-10)
more ...
comment
Keywords: discovered checkmate, Battery creation, Battery mates, double-check mate, Indian (4-fach), Läuferstern, Schlüssel = Eckzug (in 2+3)
Genre: 3#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 6R1/p7/4K3/7p/P3Bk1P/4n3/1R2P3/2B5
Input: Gunter Jordan, 2021-10-08
Last update: Gunter Jordan, 2023-07-09 more...
50 - P1396641
Bosko Miloseski
C322 SuperProblem (Website) 04/10/2021
2. Lob
Abt. #7 - #n
PR Waleri Kirillow
P1396641
(4+8)
#10
1. Th1+ Kg7 2. Lc1! Kf6 3. Te1 Kf5 4. Te6 Kg4 5. Tf6 Kg3 6. Le2! Kg2 7. Tg6+ Kh1 8. Lf3+ Kh2 9. Lf4+ Kh3 10. Th6#
play all play one stop play next play all
Anton Baumann: DL: 7. ... Kh2 8.Lf3,Lf4 Kh3 9.Lf4,Lf3 nebst 10.Th6#
sowie 6. ... Kh3 7.Tg6 Kh4 8.Lf3,Lf4 Kh3 9.Lf4,Lf3 10.Th6# (2022-05-25)
comment
Keywords: corner to corner (k), Checking key, Schlüssel = Eckzug
Genre: n#
FEN: 7k/8/8/8/1pB5/bp6/prpB4/KbR5
Input: Gunter Jordan, 2021-12-05
Last update: Gunter Jordan, 2021-12-05 more...
51 - P1398030
Zoltan Laborczi
SuperProblem (Website) 20/12/2021
7. Platz TT-263
P1398030
(2+6) C+
h#7
0.1.1...
1. ... Kg7-h8 2. Sb4-a6 b3-b4 3. De3-e2 b4-b5 4. Tf3-c3 b5xa6 5. e4-e3 a6-a7 6. Lh7-c2 a7-a8=D 7. Kd4-d3 Da8-d5#
play all play one stop play next play all
Yuri Bilokin: you can see 1.Sa6 b4 2.Qe2 b5 3.Rc3 bxa6 4.e3 a7 5.Bc2 a8=Q 6.Kd3 Qd5#
1.Sc2 b4 2.Ke5 b5 3.Kf4 b6 4.Qg1+ Kf6 5.Se3 b7 6.Qg4 b8=Q#
1.Sc2 b4 2.Ke5 b5 3.Kf4 b6 4.Qg1+ Kf6 5.Qg4 b7 6.Se3 b8=Q#
1.Sc2 b4 2.Ke5 b5 3.Kf4 Kf6 4.Qg1 b6 5.Se3 b7 6.Qg4 b8=Q# (2023-08-15)
comment
Keywords: Minimal (B), Schlüssel = Eckzug, Promotion (D), Model mate, Epaulettenmatt, Entblockung, Tempo Loss
Genre: h#
Computer test: Gustav 4.1c
FEN: 8/6Kb/8/8/1n1kp3/1P2qr2/8/8
Input: Marcin Banaszek, 2022-01-07
Last update: Gunter Jordan, 2022-01-07 more...
52 - P1400469
Zlatko Mihajloski
2229 Gaudium 249 30/09/2021
P1400469
(2+4) C+
h#7
0.1.1...
1. ... La8! 2. Sc8 Kb7 3. Kb5 Kxc7 4. Ka6 Lxc6 5. Ka7 Lb5 6. Ka8 La6 7. Sa7 Lb7#
play all play one stop play next play all
Jakob Leck: cf. P1402335 (2022-12-29)
comment
Keywords: Corner mate, Ideal mate, Klasinc theme (L-K, L-k, s-k), Miniature, Minimal (L), Interchange (L-k), Switchback (s), Round Trip (L-5), Schlüssel = Eckzug, Selfblock, Tempo Loss
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 8/nBp5/K1p5/8/2k5/8/8/8
Input: Gunter Jordan, 2022-04-09
Last update: Gunter Jordan, 2022-04-09 more...
53 - P1401456
Claus Grupen
2132 Problem Observer 03/2011
2. ehrende Erwähnung
P1401456
(2+7)
#3
1. Dh1! (Z) f3 2. Dxh8 f2 3. Dxe5#
1. ... Lf6 2. Dc6 ... 3. Dc3#
2. ... e4 3. Dxf6#
1. ... Lg7 2. Db7 ... 3. Db2#
2. ... e4 3. Dxg7#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 also (2023-10-21)
comment
Keywords: corner to corner (D), Corner mate, Line opening, Changed mates, Model mate (Gnaden-), Schlüssel = Eckzug, Minimal (D)
Genre: 3#
Computer test: Gustav 4.1 a
FEN: 7b/8/8/4p3/5p2/8/p1p5/kbK3Q1
Input: Gunter Jordan, 2022-05-24
Last update: Gunter Jordan, 2023-10-21 more...
54 - P1401903
Rudolf Svoboda
302 Tabor 24/03/1939
P1401903
(3+3)
h=2
1. Lh8 Lg5 2. Kg7 Sf6=
play all play one stop play next play all
in 'Tabor' als "Pomocný samopat" (Weiß zieht an, Schwarz setzt patt) gespiegelt/farbvertauscht (FEN=8/8/8/8/3nB3/6P1/8/3bk1K1)
SCHRECKE: C+, popeye 4.87 (2022-06-15)
comment
Keywords: Miniature, Schlüssel = Eckzug
Genre: Fairies
FEN: 3BK1k1/8/6p1/3Nb3/8/8/8/8
Input: Mario Richter, 2022-06-15
Last update: Gunter Jordan, 2022-06-15 more...
55 - P1402349
Wilhelm E. Jensen
6 Jemtlands Tidning 31/10/1885
P1402349
(5+7) C+
#2
1. Da1! (Zugzwang)
1. ... Lf2 2. Dg7#
1. ... La5,Lb4,Lc3,Ld2 2. Dg1#
1. ... f2 2. Dg7#
1. ... Kf2 2. Dxe1#
1. ... Kg4 2. Dg7#
play all play one stop play next play all
zum Autor heißt es in 'Jemtlands Tidning': W. Jensen, Köpenhamn
SCHRECKE: C+, popeye 4.87 (2022-06-30)
comment
Keywords: Schlüssel = Eckzug, Zugzwang-Goal
Genre: 2#
Computer test: popeye 4.87
FEN: 8/8/2p5/2p2P1p/2K2p1N/5pk1/1Q6/4b2R
Input: Mario Richter, 2022-06-30
Last update: Dieter Berlin, 2022-07-02 more...
56 - P1402583
Roman Fedorovich (Zalokotsky)
131 Smena (Moskwa) 12/1997
P1402583
(4+3)
#2
1. Dh1! droht 2. Da8#
1. ... Dxh1 2. Txh1#
1. ... Dh2 2. Dxh2#
1. ... Dh7 2. Dxh7#
1. ... Dh6+ 2. Dxh6#
1. ... Dh5 2. Dxh5#
1. ... Dh4+ 2. Dxh4#
1. ... g3 2. Dxh3#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2022-07-09)
comment
Keywords: Schlüssel = Eckzug, Sacrifice key, Pinning, corner to corner (d), Miniature
Genre: 2#
FEN: 7k/6R1/5K2/8/6p1/7q/8/5RQ1
Input: Mario Richter, 2022-07-09
Last update: Gunter Jordan, 2022-07-09 more...
57 - P1402656
Vitaly S. Kovalenko
3884 Shakhmatnaya Kompozitsiya 67 2005
P1402656
(3+4)
#3
1. Th1! Se1+ 2. Kf1 ... 3. Th8#
1. ... Se3+ 2. Kg1 ... 3. Th8#
1. ... f3+ 2. Kg3 ... 3. Th8#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2022-07-12)
comment
Keywords: Provoked check, Miniature, Schlüssel = Eckzug, corner to corner (T)
Genre: 3#
FEN: 2k5/5R2/8/8/4pp2/8/2n3K1/2R5
Input: Rainer Staudte, 2022-07-12
Last update: Gunter Jordan, 2022-07-12 more...
58 - P1402695
Walter Freiherr von Holzhausen
44 Armeezeitung 26 12/05/1904
P1402695
(5+3) C+
#4
1. La1! Kc4 2. Txb5 Kb3 3. Tc5 Ka3 4. Tc3#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2022-07-14)
comment
Keywords: Zugzwang-Goal, Schlüssel = Eckzug
Genre: n#
Computer test: HJ: Popeye 4.61
FEN: 8/3p4/1R1P1B2/Kpk5/1N6/8/8/8
Reprints: 44 Das Schachproblem , p. 43, 1937
Input: Dieter Berlin, 2022-07-14
Last update: Rainer Staudte, 2022-07-14 more...
59 - P1404944
Stephan Dietrich
18937 Die Schwalbe 314 04/2022
Norbert Geissler zum
64. Geburtstag gewidmet
P1404944
(5+3)
ser-s#13
Alphabetschach
Breton adverse
1. a8=L 2. b8=L 3. Lf3 4. La7 5. Lg1 6. d8=S 7. Se6 8. Sg5 9. e8=S 10. Sf6 11. Lg4 12. Sh5 13. Ld4 Sxg4 [-wLd4]#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-03-12)
comment
Keywords: Seriesmover, Schlüssel = Eckzug, under-promotion key, under-promotion (LS), under-promotion B/S, konsekutive Umwandlungen 4 (LLSS), Corner mate, Selfblock, Ideal mate
Genre: Fairies
FEN: 7k/PP1PP3/7K/4n3/7n/8/8/8
Input: Stefan Höning, 2022-10-07
Last update: Gunter Jordan, 2023-03-11 more...
60 - P1405215
Niels Høeg
Deutsches Wochenschach 1907
P1405215
(11+4) C+
#4
1. La1! a4 2. Tc3 Kd4 3. Sb2 Kxc3 4. Se2#
1. ... axb4 2. Kg6 bxa3 3. Kf5 a2 4. Sf1#
play all play one stop play next play all
more ...
comment
Keywords: Indian, Rook sacrifice, Drag-in sacrifice, Schlüssel = Eckzug
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/7K/2p2B2/p1P5/1P2PP2/PR1Nk1N1/3p4/3B4
Reprints: 294 Versunkene Schätze , p. 127, 1998
Input: Dieter Berlin, 2022-10-13
Last update: Dieter Berlin, 2022-10-13 more...
61 - P1405767
György Bakcsi
688 Neue Osnabrücker Zeitung 20/06/1992
P1405767
(9+6) C+
#2
1. Dh8! droht 2. Sxd6#
1. ... Sxe4 2. Dd8#
1. ... Sf5 2. Sc5#
1. ... Sxc4 2. Sc3#
1. ... Kd3 2. Sc5#
1. ... Te1 2. Td2#
play all play one stop play next play all
more ...
comment
Keywords: pin-mate, discovered checkmate, Deckungsverlust, Batterienutzung, mehrfache, Schlüssel = Eckzug
Genre: 2#
Computer test: Juel: Popeye 4.61
FEN: n2Q4/4pP1B/3n4/4p3/1KPkNR2/8/1R3P2/3r4
Reprints: 160 Problemschach-Jahrbuch 1992 D , p. 80, 1992
Input: Dieter Berlin, 2022-11-11
Last update: Dieter Berlin, 2022-11-11 more...
62 - P1406124
Alois Johandl
Themes-64 1967
1. Preis
P1406124
(6+11) C+
#7
1. Sh8! Kxe5 2. Sf7+ Kf4 3. Lxf2 Sc4 4. Th4+ Kf3 5. Se5+ Sxe5 6. Th3+ Kf4 7. Le3#
play all play one stop play next play all
more ...
comment
Keywords: Flight-giving key, Switchback (S), Knight sacrifice, Blocknutzung, Pure mate, Model mate, Schlüssel = Eckzug, Rücknahme Schlüsselzug
Genre: n#
Computer test: SCHRECKE: Gustav 4.2b
FEN: 8/5N2/4pN1p/n3Pp2/1p3k1B/1p5R/qp3p2/2n2K2
Reprints: 1760 Beispiele zur Ideengeschichte des Schachproblems , p. 356, 1982
Input: Dieter Berlin, 2022-11-24
Last update: Dieter Berlin, 2022-11-24 more...
63 - P1406711
P. A. Orlimont
11783 Deutsches Wochenschach 23/11/1913
C. Kockelkorn gewidmet
zum 70. Geburtstag
P1406711
(8+7) C+
#5
1. Th1! Sf1 2. Tg2 Sxd2 3. Ta1 Sb3 4. Tb2 axb2 5. a3#
play all play one stop play next play all
more ...
comment
Keywords: ambush, Rook sacrifice, Pawn mate, Schlüssel = Eckzug, corner to corner (T), Model mate
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 6KR/6R1/1p3B2/bPp5/1kp5/p1N3n1/P2P4/8
Reprints: 752 Beispiele zur Ideengeschichte des Schachproblems , p. 159, 1982
Input: Dieter Berlin, 2022-12-14
Last update: Dieter Berlin, 2022-12-14 more...
64 - P1406907
Viktor Shcherbina
Zhiguliovskiye zori 2022
2. Preis
P1406907
(4+3)
#4
1. Dh8! Kb1 2. Dxh3 Ka1 3. Dh8 Kb1 4. Dh1#
1. ... h2 2. Lc2 h1=D 3. Dxh1+ Kxa2 4. Da8#
3. ... b1=D 4. Dxb1#
2. ... h1=S 3. Dxh1+ Kxa2 4. Da8#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2b, Brute Force (2022-12-29)
comment
Keywords: Miniature, Schlüssel = Eckzug, corner to corner (D), Round Trip (D-3), Promotion (d), under-promotion (s)
Genre: n#
FEN: Q7/8/8/8/8/1B2K2p/Pp6/k7
Input: Rainer Staudte, 2022-12-29
Last update: Gunter Jordan, 2022-12-29 more...
65 - P1407348
Andreas Thoma
14828 Springaren 158 6/2021
P1407348
(2+3) C+
h#6
1. a1=L Kg6 2. Ka2 Kf5 3. Lb2 Ke4 4. La3 Kd3 5. d1=T Kc2 6. Ta1 Ld5#
play all play one stop play next play all
Yuri Bilokin: possibly wBg2-a4 8/7K/8/8/B7/8/pk1p4/8 (2+3) h#6
1.a1=B Kg6 2.Ka2 Kf5 3.Bb2 Ke4 4.Ba3 Kd3 5.d1=R+ Kc2 6.Ra1 Bb3# (IM)

Place exchange (bB/bK)
Promotion (rb)
Ideal mate (2023-01-22)
Henrik Juel: This is no ideal mate, as b3 is guarded both by Kc2 and Ld5 (2023-01-22)
Gerald Ettl: Hallo Henrik, bezüglich des Idealmatts: in seiner Version steht der wL zum Schluss auf b3. (2023-01-22)
comment
Keywords: konsekutive Umwandlungen 2 (lt), Minimal (L), Schlüssel = Eckzug, Selfblock, under-promotion (tl), under-promotion key
Genre: h#
Computer test: Gustav 4.1 i
FEN: 8/7K/8/8/8/8/pk1p2B1/8
Input: Gunter Jordan, 2023-01-19
Last update: Gunter Jordan, 2023-01-19 more...
66 - P1407400
Oswaldo Faria
Caetano Belliboni

2836 Thema Danicum 10/1984
P1407400
(3+3) C+
s#5
Längstzüger
Circe
1. Th1! Th7 2. Txh7[+sTa8]+ Kg8 3. Ta7 Tf8 4. Ta8 Txa8[+wTh1] 5. Tb1 Txa2#
play all play one stop play next play all
Gunter Jordan: Ein herrliches, vergnügliches Problem! (2023-01-22)
comment
Keywords: Circe, Maximummer, Switchback, Schlüssel = Eckzug, Opferbahnung, corner to corner (T), Round Trip (T-5), Selfblock, Rücknahme Schlüsselzug, Pinning, Corner mate, Model mate
Genre: Fairies
Computer test: Popeye Windows-32Bit v4.79
FEN: 7k/8/8/1p6/8/8/P6r/KR6
Input: HBae, 2023-01-22
Last update: Gunter Jordan, 2023-01-22 more...
67 - P1408269
Pietro Pitton
SuperProblem (Website) 15/02/2017
31. Platz
181. Thematurnier
P1408269
(5+2)
#3
1. h8=D! Ka2 2. Dg8+ Ka1 3. b4#
1. ... Sb5 2. Da8+ Sa3 3. Dxa3#
2. ... Sa7 3. Dxa7#
1. ... Sc6 2. Da8+ Sa5 3. Dxa5#
2. ... Sa7 3. Dxa7#
1. ... Sc8 2. Dg8 ... 3. b4#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-03-15)
comment
Keywords: Minimal (s), Miniature, Promotion key, Promotion (D), Schlüssel = Eckzug, Corner mate, discovered checkmate, Batteriematt diagonal, corner to corner (D)
Genre: 3#
FEN: 8/n6P/3P4/8/8/2B5/1P6/k1K5
Input: Rainer Staudte, 2023-03-15
Last update: Gunter Jordan, 2023-03-16 more...
68 - P1408272
Knud H. Hannemann
Skakbladet 1919
P1408272
(3+2)
#2
1. Da1
play all play one stop play next play all
Henrik Juel: dual efter 1... Se3,Se7,Sd6 (2023-03-15)
comment
Keywords: Aristocrat, Minimal (s), Schlüssel = Eckzug
Genre: 2#
FEN: 5N2/8/8/5n1k/Q4K2/8/8/8
Reprints: 18 The Problemist 28-11, p. 450, 09/2022
Input: Felber, Volker, 2023-03-15
Last update: Gunter Jordan, 2023-03-16 more...
69 - P1408485
Joseph Dahmen
48 Westdeutsche Landeszeitung 27/11/1927
P1408485
(7+1)
#3
1. Lh8! (Zugzwang)
1. ... Kxe4 2. Tf6 Kxd4 3. Tf4#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-03-24)
comment
Keywords: Schlüssel = Eckzug, Rex solus (s)
Genre: 3#
FEN: 8/6B1/6R1/8/1PPPPk2/8/4K3/8
Input: Mario Richter, 2023-03-24
Last update: Gunter Jordan, 2023-03-24 more...
70 - P1408553
Joselito Marcos
Tia Belau News 20/03/1923
P1408553
(6+1) cooked
#3
1. Dh8! Kxc4 2. De5 Kd3 3. Dd4#
1. ... Ke4 2. De5+ Kd3 3. Dd4#
play all play one stop play next play all
Cook: 2. Se3 ... 3. Dd4#
Henrik Juel: first variation is OK
second is dualistic: 1... Ke4 2.De5+,Se3 (2023-03-29)
comment
Keywords: Flight taking, Schlüssel = Eckzug
Genre: 3#
FEN: 8/8/8/8/2N5/2Pk2K1/6PQ/3B4
Input: Rainer Staudte, 2023-03-29
Last update: Gunter Jordan, 2023-03-29 more...
71 - P1408712
George P. Sphicas
8122 Phénix 2017
3. Preis
PR Tadashi Wakashima
P1408712
(10+3)
ser-s#21
1. a8=L 2. Lb7 3. La6 4. c7 5. c8=S 6. Sd6 7. d8=D 8. Df6 9. Sf5 10. g6 11. g7 12. g8=T 13. Tg1 14. Tc1 15. Ke1 16. Dd1 17. Le2 18. d2-d3 19. Kd2 20. Le1 21. Se3+ dxe3#
play all play one stop play next play all
paul: Cooked with Jacobi: 1.d3 2.Kd2 3.Be1 4.Qd1 5.g6 6.c7 7.g7 8.a8=R 9.c8=B 10.d8=S 11.Ra1 12.Rc1 13.Bg4 14.Be2 15.Se6 16.g8=Q 17.Qg7 18.Qf6 19.Sg7 20.Sf5 21.Se3+ dxe3#

I used this code:
forsyth 8/P2P4/2P5/2bk2PQ/3p4/2P5/2PPKB2/8

stip ser-dia 21
pieces white Kd2 Qd1f6 Rc1 Be1e2 Se3 Pc2c3d3 black Kd5 Bc5 Pd4 (2023-05-09)
comment
Keywords: Allumwandlung, Antiphönix, Pawn mate, Entblockung, Remote selfblock, Skittles setup (im Mattbild), konsekutive Umwandlungen 4 (LSDT), Liniensperrung, Model mate, Check Protection, Schlüssel = Eckzug, Selfblock, Seriesmover, Promotion (D), under-promotion (TLS), under-promotion key
Genre: Fairies
FEN: 8/P2P4/2P5/2bk2PQ/3p4/2P5/2PPKB2/8
Input: Gunter Jordan, 2023-04-05
Last update: Gunter Jordan, 2023-04-05 more...
72 - P1408895
Sjoerd Hoekstra
H1850 Probleemblad 1/23 01-03/2023
P1408895
(3+10) C+
h#6
0.1.1...
1. ... Th1 2. Tg1 Th2+ 3. g2 Th1 4. Sg3 Th2 5. Tf1 Th1 6. g1=S Th2#
play all play one stop play next play all
Yuri Bilokin: you can see h#5 1.Qe2 Rh1 2.Se3 Rh2 3.Kf1 Rxg2 4.f2 Rh2 5.Sg2 Rh1#
get rid of Exchange e1 e3 1K6/6r1/1n6/8/7p/4bppP/5krR/4qn2 (3+10) (2023-04-19)
comment
Keywords: under-promotion (s), Schlüssel = Eckzug, Switchback (T), Rücknahme Schlüsselzug, Selfblock, changed blocks, Interchange (t-s-b zyklisch)
Genre: h#
FEN: 1K6/6r1/1n6/8/7p/4qppP/5krR/4bn2
Input: Gunter Jordan, 2023-04-15
Last update: Gunter Jordan, 2023-07-24 more...
73 - P1409476
Friedhelm Schwieger
12/93 Stern 18/03/1993
P1409476
(11+10) C+
#5
1. Da8! Lb6 2. Lh2 Ld8 3. Dxd8 Kxb2 4. Le5+ Kxa3 5. Da5#
play all play one stop play next play all
more ...
comment
Keywords: Zugzwang-Goal, Grab, corner to corner (D), Schlüssel = Eckzug
Genre: n#
Computer test: SCHRECKE: Gustav 4.2c
FEN: 8/b3p3/4P3/2p1B1p1/2P3Pp/Np1Pp2P/pP1pP3/k2K3Q
Reprints: 204 Problemschach-Jahrbuch 1993 D , p. 96, 1993
Input: Dieter Berlin, 2023-05-09
Last update: Gunter Jordan, 2023-05-09 more...
74 - P1409568
Eberhard Schulze
Die Schwalbe 01/06/2011
Lob Informalturnier 2011
P1409568
(8+6) C+
h#2
b) wKd8->a7
a) 1. Dh1 Sc6+ 2. Kxe4 Dxh1#
b) 1. Lg5 Txc4+ 2. Kxe5 Dxg5#
play all play one stop play next play all
more ...
comment
Keywords: Schlüssel = Eckzug (in a), Twin
Genre: h#
Computer test: Gustav 4.2
FEN: 2BK4/8/5P2/4N3/2pkN1pQ/1pR1b1P1/8/3q4
Input: Eberhard Schulze, 2023-05-12
Last update: Gunter Jordan, 2023-05-12 more...
75 - P1409837
? ?

P1409837
(4+3)
#2
1. Da8! (Zugzwang)
1. ... Kg4 2. Dg2#
1. ... Kg6 2. Dg8#
1. ... Ld1,Le2,Lf3,Lg4 2. Dg8#
1. ... Le8,Lf7,Lg6 2. Dg2#
play all play one stop play next play all
beim Nachdruck in den 'Straßburger neuesten Nachrichten' falsch wLh5; außerdem war dem Blatt der "Verfasser unbekannt" - eine Bitte an die Leserschaft, entsprechende Informationen berreitzustellen, blieb erfolglos.
Henrik Juel: C+ Popeye 4.61 (2023-05-19)
comment
Keywords: Miniature, Schlüssel = Eckzug
Genre: 2#
FEN: 8/8/4P2p/4K1kb/8/8/7R/7Q
Reprints: 18 Straßburger neueste Nachrichten 04/05/1941
Input: Mario Richter, 2023-05-19
Last update: Gunter Jordan, 2023-05-19 more...
76 - P1410539
Claus Grupen
3596 Kieler Nachrichten 06/2001
P1410539
(8+8)
#2
1. Da8! droht 2. Sc6#
1. ... Sb4 2. f4#
1. ... Lxd4 2. Sxd3#
1. ... Kxd4 2. Da1#
1. ... Le8 2. Sf3#
1. ... f5 2. Dh8#
1. ... exd5 2. Dxd5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 alxo (2023-06-26)
udo.de: steingetreu vorweggenommen durch D.M. Howard, Problem Observer, 3, Mai 2000 (2023-06-27)
comment
Keywords: Block, corner to corner (D), Square vacation, Line opening, Schlüssel = Eckzug
Genre: 2#
Computer test: Gustav 4.1 a
FEN: 8/2p5/2Qppp2/2bBk2b/3NP3/3n2K1/5P2/2NR4
Input: Gunter Jordan, 2023-06-26
Last update: Rainer Staudte, 2023-06-26 more...
77 - P1410580
Eduard Nagovitsyn
8568 Kudesnik 258 2023
P1410580
(5+2)
#2
b) sLd1->a5
a) 1. Ta1? droht 2. b7#
1. ... Lf3 2. Lb8#
1. ... La4!

1. Lb8! droht 2. b7#
1. ... Lf3 2. Ta1#

b) 1. Lb8? droht 2. b7#
1. ... Lxb6!

1. Ta1! Le1,L~ 2. b7#
1. ... Lxb6 2. Lxb6#
play all play one stop play next play all
SCHRECKE: a)+b): C+, popeye 4.87 (2023-06-29)
comment
Keywords: Reversal 1, Minimal (l), Miniature, Schlüssel = Eckzug (in b)
Genre: 2#
FEN: k1K5/B7/1P2P3/8/8/8/8/2Rb4
Input: Rainer Staudte, 2023-06-29
Last update: Gunter Jordan, 2023-06-29 more...
78 - P1410592
Henry Turton

P1410592
(6+4)
#3
1. Ta1! (Zugzwang)
1. ... a6 2. La2 Kxa4 3. Lc4#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-06-29)
comment
Keywords: Schlüssel = Eckzug, Indian, Batteriematt vertikal, discovered checkmate, Knight sacrifice
Genre: 3#
FEN: 8/pK6/8/pk1B1p2/N4P2/R1P5/8/8
Reprints: 7 St. Catharines Constitutional 06/04/1865
Input: Mario Richter, 2023-06-29
Last update: Gunter Jordan, 2023-06-29 more...
79 - P1410731
A. Ja. Chalamaiser
126 Smena (Moskwa) 09/1939
P1410731
(6+1)
#3
1. Ta1! Kb5 2. Kc7 Ka4,K~ 3. Lc4#
1. ... Kb7 2. Ld5+ Kb8 3. Ta8#
play all play one stop play next play all
SCHRECKE: C+, popeye 4.87 (2023-07-04)
comment
Keywords: Rex solus (s), Miniature, Schlüssel = Eckzug
Genre: 3#
FEN: 3K4/8/2k5/2P5/3P4/2P5/B7/4R3
Input: Rainer Staudte, 2023-07-04
Last update: Gunter Jordan, 2023-07-04 more...
80 - P1410870
Peter Rolf Orlik
Saarbrücker Zeitung 24/12/1993
P1410870
(12+10) C+
#3
1. La8! h1=D 2. Txh1 Kb2 3. Db4# 2. ... c3 3. Dxc1#
1. ... gxh3 2. Lh1 Kb2 3. Db4# 2. ... c3 3. Tb4#
1. ... c3 2. Dh1 Kb2 3. Db7# 2. ... gxh3 3. Tb4#
play all play one stop play next play all
more ...
comment
Keywords: corner to corner (L), Switchback (L), Epaulettenmatt, Line opening, white Bristol, Schlüssel = Eckzug
Genre: 3#
Computer test: SCHRECKE: popeye 4.87
FEN: 5B2/8/p4P1P/P6p/P1p3pR/P5PR/p1p2K1p/rkb1Q2B
Reprints: 672 Problemschach-Jahrbuch 1993 D , p. 340, 1994
Input: Dieter Berlin, 2023-07-11
Last update: Gunter Jordan, 2023-07-11 more...
81 - P1410881
Roman Gostynski
3 Promien 15/05/1928
P1410881
(7+1)
#3
1. Da1! (Zugzwang)
1. ... Kf5,Kd5 2. Da6 Ke4 3. De6#
1. ... Ke3 2. Dd1 ... 3. Dd3#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-07-12)
comment
Keywords: Rex solus (s), Schlüssel = Eckzug
Genre: 3#
FEN: 8/8/8/1P6/4kP2/2P3K1/1QP1P3/8
Input: Mario Richter, 2023-07-12
Last update: Gunter Jordan, 2023-07-12 more...
82 - P1410943
Claus Grupen
3827 Kieler Nachrichten 10/12/2005
P1410943
(4+7) C+
#4
1. Da1! fxg2! 2. Da5+ Kd4 3. Dd2+ Ke5 4. Tc5+ Kf6 5. Dg5#
play all play one stop play next play all
sBb3 = Wiesel
Stefan Felber: Forderung korrigieren! (2023-07-16)
comment
Keywords: Asymmetrical solution, Flight taking, Schlüssel = Eckzug, Symbol problem (Kreuz), Symmetrical position
Genre: n#
Computer test: Gustav 4.1 a
FEN: 8/1K3p2/2R1p3/3k4/2p1p3/1p3p2/6B1/7Q
Input: Gunter Jordan, 2023-07-16
Last update: Gunter Jordan, 2023-07-16 more...
83 - P1411131
Baldur Kozdon
13222 Probleemblad 01/23 01-03/2023
P1411131
(3+13)
#13
1. Ta1! droht 2. Ta2+ Kh1 3. Kg3 c4 4. Txa7 ... 5. Ta1#
1. ... Sf6! 2. Ta2+ Kh1 3. Kg3 ... 4. Ta1#
3. ... Sh5+ 4. Kxh3 Sf4+ 5. Kg3 Sh5+ 6. Kf3 ... 7. Ta1+ Kh2 8. Tg2+ Kh3 9. Th1#
6. ... Sf4 7. Ta1+ Kh2 8. Tgg1 ... 9. Th1#
8. ... g4+ 9. Txg4 ... 10. Tgg1 ... 11. Th1#
9. ... Ld7 10. Txf4 ... 11. Th4+ Lh3 12. Txh3+ Kxh3 13. Th1#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-07-25)
comment
Keywords: Schlüssel = Eckzug, Opferminimal
FEN: 4br2/b4p1n/3p3p/1ppp2p1/6R1/5K1p/7k/6R1
Input: Gunter Jordan, 2023-07-25
Last update: Gunter Jordan, 2023-07-25 more...
84 - P1411276
Kabe Moen
SS029 The Hopper Magazine I02 25/06/2022
P1411276
(10+6) C+
#2
b) sKd3<->wBe3
a) 1. Db8! droht 2. Db3#
1. ... Kxe3 2. Dg3#
1. ... Td6 2. Sc1#

b) 1. Dh8! droht 2. Dh3#
1. ... Kxd3 2. Dc3#
1. ... Sf4 2. Sf1#
play all play one stop play next play all
more ...
comment
Keywords: Schlüssel = Eckzug (in b), Twin
Genre: 2#
Computer test: a)+b): C+, popeye 4.87
FEN: 3Q4/3RRp2/2p1r3/2pn4/2P3B1/3kP3/1K1NN3/4B3
Input: Rainer Staudte, 2023-07-27
Last update: A.Buchanan, 2023-07-27 more...
85 - P1411397
Boris Shorokhov

1. Preis
Abt. h#3,5-n
Andrej Seliwanow 55-JT
PR Andrej Seliwanow
P1411397
(6+14)
h#5
1. Ta1 Kg7! (K~?) 2. Ta8 Ta1 3. Th8 Ta8 4. Txh3 Th8 5. Th1 Txh1#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-07-29)
comment
Keywords: Schlüssel = Eckzug, corner to corner (Tt), Umnov, Line opening, Square vacation
FEN: 7K/3p4/3p4/3P4/2P2p2/5pbP/1pPpppn1/1rRrqk2
Input: Gunter Jordan, 2023-07-29
Last update: Gunter Jordan, 2023-07-29 more...
86 - P1411430
Daniel Novomesky
2441 Gaudium 274 31/01/2023
nach Dikusarow
P1411430
(3+5)
s#17
1. Da8+! Kb6 2. Tc6+ Kb5 3. Da6+ Kb4 4. Tc4+ Kb3 5. Da4+ Kb2 6. Tc2+ Kb1 7. Db3+ Ka1 8. Da3+ Kb1 9. Tb2+ Kc1 10. Dc3+ Kd1 11. Td2+ Ke1 12. De3+ Kf1 13. Tf2+ Kg1 14. Kg3 g4 15. De2 g5 16. Txh2 Txh2 17. Dg2+ Txg2#
play all play one stop play next play all
Ideengeber: P1098749, vergleiche auch P1409493.
Henrik Juel: Popeye 4.61 with 'opt non 0 1' found no flaws (2023-07-30)
comment
Keywords: Königswanderung, Sacrifice of white pieces, Checking key, Schlüssel = Eckzug, Symmetrical end position, Round Trip (D-9)
Genre: s#
FEN: 2R5/k7/6p1/6p1/6K1/8/6Qp/7r
Input: Gunter Jordan, 2023-07-30
Last update: Gunter Jordan, 2023-07-31 more...
87 - P1411436
Antal Miskolczy
Magyar Sakkujsag 1911
1. Preis
P1411436
(13+10)
#3
1. Dh1! Se6 2. Td5+ Kxd5 3. Kg4# 2. ... Kc6 3. Td6#
1. ... Lc1 2. Kg3 Kxe5 3. Kh4#
play all play one stop play next play all
Henrik Juel: dual 1... Kc6 2.Kg3,Kf4+ (2023-07-31)
comment
Keywords: ambush key, Rook sacrifice, discovered checkmate, Schlüssel = Eckzug
Genre: 3#
FEN: 5n2/7p/PP1k1PpP/p1p1R1P1/P1p5/2PppK1B/2Pb3B/3Q4
Reprints: XXVI Ungarische Schachproblem Anthologie , p. 65, 1983
Input: Dieter Berlin, 2023-07-30
Last update: Gunter Jordan, 2023-07-31 more...
88 - P1411620
Lörinc Bata
Magyar Sakkelet 1953
P1411620
(6+7) C+
#8
1. Ta1! d4 2. La2 d5 3. Lb1 Le3 4. Lc2+ Lg1 5. Ld1 Le3 6. Le2+ Lg1 7. Lf1 Le3 8. Lg2#
play all play one stop play next play all
more ...
comment
Keywords: double-check mate, Zig Zag Path (L), Schlüssel = Eckzug, Discovered check, Unpinning, Corner mate
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 8/8/3pB3/3p4/p4p2/P2P1P1K/7p/4R1bk
Reprints: 190 Ungarische Schachproblem Anthologie , p. 176, 1983
Input: Dieter Berlin, 2023-08-05
Last update: Gunter Jordan, 2023-08-06 more...
89 - P1411629
Petrasin Petrasinovic
8590 Kudesnik 259 29/07/2023
P1411629
(6+1)
#2
b)-Bg2 alles eine Linie nach rechts
a) 1. Db3? Ke4 2. Dd3#
1. ... Kg4 2. Dh3#
1. ... Kf6 2. Df7#
1. ... Kxg6!

1. Dh8! Ke4 2. De5#
1. ... Kg4 2. Dh3#
1. ... Kxg6 2. Ld3#
1. ... Ke6 2. De5#

b) 1. Lf2? Kg6 2. Dg7#
1. ... Kf4!

1. Lc7? Kg6 2. Dg7#
1. ... Kh4!

1. Dd4? Kxh6 2. Dg7#
1. ... Kg6 2. Dg7#
1. ... Kh4!

1. Dc3! Kf4 2. De3#
1. ... Kh4 2. Ld8#
1. ... Kxh6 2. Dg7#
1. ... Kg6 2. Dg7#
play all play one stop play next play all
SCHRECKE: a)+b): C+, popeye 4.87 (2023-08-06)
comment
Keywords: Miniature, Twin, Rex solus (s), Schlüssel = Eckzug (in a), Flight giving sacrifice key, Changed mates
Genre: 2#
FEN: 4K1Q1/8/B5N1/5k2/5P2/8/6P1/8
Input: Rainer Staudte, 2023-08-06
Last update: Gunter Jordan, 2023-08-06 more...
90 - P1411845
James Malcom
MatPlus.net Forum 15/08/2023
After David Zimbeck
P1411845
(12+12)
#15
1. a8=D+! Kxb6 2. Da7+ Kxa7 3. Ta8+ Kb6 4. b8=D+ Txb8 5. cxb8=D+ Kc6 6. Dd6+ Kxd6 7. d8=D+ Ke5 8. e8=D+ Kf4 9. Dg5+ Kxg5 10. g8=D+ Sxg8 11. hxg8=D+ Kf4 12. f8=D+ Ke3 13. Dxf3+ Kxf3 14. Dh5+ Ke3 15. Dg3#
14. ... Kf4 15. Dgg5#
10. ... Kf4 11. f8=D+ Ke3 12. Dxf3+ Kxf3 13. Dh5+ Sg4 14. Dgxg4+ Ke3 15. Dg3#,Dhh3#
11. ... Sf5 12. Dxf5+ Ke3 13. Dxf3+ Kxf3 14. Dh5+ Ke3 15. Dg3#
14. ... Kf4 15. Dgg5#
play all play one stop play next play all
Record of 8 white queen promotions
Improvement of P1201958
https://www.matplus.net/start.php?px=1692327608&app=forum&act=posts&fid=gen&tid=3061&pid=25076#n25076
Schade um das dualistische Matt. Im strengen Sinn also kein Rekord.
SCHRECKE: sTg8 gehört nach f8! (2023-08-18)
James Malcom: Fixed. (2023-08-18)
SCHRECKE: Der wSb6 ist überflüssig!! (2023-08-18)
James Malcom: That's a surprise. (2023-08-18)
comment
Keywords: Promotion (DDDDDDDD x8), Construction record, Promotion key, konsekutive Umwandlungen 8 (DDDDDDDD), Checking key, Schlüssel = Eckzug, Phoenix, Antiphönix, Switchback (k)
Computer test: Popeye 4.87 Gustav
FEN: 1R3r2/PPPPPPPP/kN5n/1pp5/1n1bp3/2r2p2/1Kbq4/7N
Input: James Malcom, 2023-08-18
Last update: Gunter Jordan, 2023-08-18 more...
91 - P1412776
Sergiy Karnatsky
C437 Problemist Ukrainy 77 07-09/2023
1. ehrende Erwähnung
P1412776
(8+6) C+
#13
1. Ta6-a1+! Kb1-c2 2. Ta1-c1+ Kc2-d3 3. Tc1-c3+ Kd3-e4 4. Tc3-e3+ Ke4-f5 5. Te3-e5+ Kf5-g6 6. Te5-g5+ Kg6-h7 7. Tg5-h5+ Kh7-g6 8. Th5-h6+ Kg6-f5 9. Th6-f6+ Kf5-e4 10. Tf6-f4+ Ke4-d3 11. Tf4-d4+ Kd3-c2 12. Td4-d2+ Kc2-b1 13. Td2-b2#
play all play one stop play next play all
Judge Yuri Gordian 10/2023
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-10-06)
comment
Keywords: Schlüssel = Eckzug, Checking key, Perpetual check, Switchback (k), Rook's Staircase
Genre: n#
Computer test: Gustav 4.1c
FEN: 6rB/1n3N2/R3P3/3b4/1K4p1/1N4P1/4pP2/1k6
Input: Marcin Banaszek, 2023-10-06
Last update: Gunter Jordan, 2023-10-06 more...
92 - P1413136
Mykola R. Vasyuchko
Mykhailo T. Halma

G947 Problemist Ukrainy 78 10-12/2023
P1413136
(2+13)
ser-h#7
1. Th1 2. T6h2 3. Lh3 4. Dg4 5. Sf5 6. Lg3 7. Se5 Th8#
play all play one stop play next play all
SCHRECKE: C+, Gustav 4.2e, Brute Force (2023-10-23)
comment
Keywords: Minimal (T), Schlüssel = Eckzug, black Bristol, Model mate, Line closing
Genre: Fairies
FEN: kb6/pp1q3R/2nnb1pr/6pr/8/8/3Kp3/8
Input: Marcin Banaszek, 2023-10-23
Last update: Gunter Jordan, 2023-10-23 more...
93 - P1414200
Yuri M. Alekseev
38 64-Shakhmatnoe obozreniye 05/2023
P1414200
(5+2)
#2
1. Db6? Kc4 2. Dd4#
1. ... Ka3 2. Da5#
1. ... Ka4!

1. Dc2? Ka3 2. Db3#
1. ... Ka5!

1. Dc1? Ka5 2. Da3#
1. ... Ka4!

1. Sc3? Ka5 2. Dxb5#
1. ... Ka3!

1. Da8! Kc4 2. De4#
1. ... Ka3,Ka4,Ka5 2. Lc5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2023-12-27)
comment
Keywords: Changed mates, Minimal (b), Miniature, Schlüssel = Eckzug
Genre: 2#
FEN: 8/B7/2Q5/1p6/1k6/8/4N3/NK6
Input: Rainer Staudte, 2023-12-27
Last update: Gunter Jordan, 2023-12-29 more...
94 - P1414381
Hieronymus Fischer
583 Bamberger Neueste Nachrichten 13/07/1890
P1414381
(3+4)

1. Da1! Tb8,Td8,Te8,Tf8 2. Tb7+,Td7+,Te7+,Tf7+ Kg8 3. Dg7#
1. ... Lf3+ 2. Tg2+ Kh7 3. Dg7#
play all play one stop play next play all
Henrik Juel: Lots of duals (2024-01-08)
Henrik Juel: stipulation missing, #3 (2024-01-08)
comment
Keywords: Battery creation, Miniature, Schlüssel = Eckzug
FEN: 2r4k/6R1/2p5/7b/8/8/8/6QK
Input: Rainer Staudte, 2024-01-08
Last update: Gunter Jordan, 2024-01-08 more...
95 - P1415039
Petrasin Petrasinovic
10825 Seven Chess Notes 216 01/2024
P1415039
(6+1)
#3
1. Dh1 Kd2 2. Sd5 Kc2 3. Dd1#
1. ... Kf2 2. Sg4+ Kxg3 3. Dh2#
1. ... Kd4 2. Sf5+ Ke5 3. De4#
2. ... Kc5 3. Sd7#
2. ... Kc3 3. Dc1#
1. ... Kf4 2. Sg4 Kxg3 3. Dh2#
2. ... Kxg5 3. Dh6#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2024-02-13)
comment
Keywords: Rex solus (s), Schlüssel = Eckzug, Flight-giving key, Miniature
Genre: 3#
FEN: 8/8/5N2/6P1/8/K3k1N1/4B1Q1/8
Input: Rainer Staudte, 2024-02-13
Last update: Gunter Jordan, 2024-02-13 more...
96 - P1415250
C. A. Boivin
178 Canadian Chess Problems , p. 180, 1890
P1415250
(6+7) cooked
#3
1. Dh1! Dxh1 2. Txg5+ Tf5 3. Txf5#
1. ... Ke5 2. Dxe4+ Kf6 3. De6#
play all play one stop play next play all
SCHRECKE: Unlösbar - 1. Dh1!? Ke5 2. Dxe4+ Kf6+! (2024-02-24)
Thomas Woschnik: wKb6 +wBa5 Dann Lösung w. o. (2024-02-26)
Gunter Jordan: Die Autorlösung (und die von TW) könnte auch einfach mit einem sLg5 erreicht werden. So oder so gibt es kleine Mattduale (z. B. nach 1. ... Tf4,Tf3 2. Txg5+). (2024-02-27)
comment
Keywords: Sacrifice key, Epaulettenmatt, Schlüssel = Eckzug, corner to corner (D)
Genre: 3#
Computer test: SCHRECKE: Unlösbar!
FEN: 5N2/1p3r2/3p3P/1K1k2rR/3pq3/3P4/8/Q7
Input: Dieter Berlin, 2024-02-24
Last update: Gunter Jordan, 2024-02-27 more...
97 - P1415353
Valery Surkov
ru_chess_art 29/02/2024
P1415353
(5+2)
s#5
* 1. ... Kc3 2. h8=D+ Kc4 3. Df8! Kc3 4. Da3+ Kc4 5. Tb5! axb5#

1. h8=T! Kc3 2. Th1! Kc4 3. Ta1! Kc3 4. Ta3+ Kc4 5. Tb5! axb5#
play all play one stop play next play all
Henrik Juel: C+ Popeye 4.61 (2024-02-29)
comment
Keywords: changed blocks, under-promotion key, under-promotion (T), Promotion (D im *), Exchange of Promotions, Schlüssel = Eckzug, Minimal (b), Pawn mate, Switchback (k), Selfblock, Antiphönix, Rook sacrifice, corner to corner (T)
Genre: s#
FEN: 8/7P/p7/P2R4/K1k5/8/3R4/8
Input: Rainer Staudte, 2024-02-29
Last update: Gunter Jordan, 2024-02-29 more...
Show statistic for complete result. Show search result faster by using ids.

https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+NOT+A%3D%27Gruber%2C+Lutz-Dieter%27+AND+K%3D%27Schl%C3%BCssel+%3D+Eckzug%27

The problems of this query have been registered by the following contributors:

Selbstmatt-Miniaturen/Reflexmatt-Miniaturen (1)
Frank Müller (9)
Brian Stephenson (1)
HBae (2)
GüBü (1)
Zuncke/Bruder (7)
Felber, Volker (11)
Gunter Jordan (17)
TLi (1)
Rainer Staudte (18)
Gerd Wilts (1)
A.Buchanan (1)
Erich Bartel (1)
Schwalbe (2)
Mario Richter (8)
Marcin Banaszek (3)
Dieter Berlin (10)
Stefan Höning (1)
Eberhard Schulze (1)
James Malcom (1)