22 problem(s) found in 5347 milliseconds (displaying 22 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Mustermatt' AND K='Blockwechsel'] [download as LaTeX]
1. De4? Sh6! 1. Da4? Th6!
1. Kg1! droht 2. Txg4+ Kxg4 3. De4#
1. ... Th6 2. De4
1. ... Sh6 2. Da4
1. Kg1! droht 2. Txg4+ Kxg4 3. De4#
1. ... Th6 2. De4
1. ... Sh6 2. Da4
Keywords: Brian Stephenson Collection (38419), changed blocks, Blocknutzung, Zugzwang-Goal
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 6n1/7p/5p2/p1p2Ppr/2R3pk/6p1/2Q1P1P1/7K
Reprints: 119 Das logische Schachproblem , p. 100, 1965
119 Das logische Schachproblem , p. 102, 1980
42 200 Schachrätsel [Lossa] 1984
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-01-02 more...
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 6n1/7p/5p2/p1p2Ppr/2R3pk/6p1/2Q1P1P1/7K
Reprints: 119 Das logische Schachproblem , p. 100, 1965
119 Das logische Schachproblem , p. 102, 1980
42 200 Schachrätsel [Lossa] 1984
Input: Brian Stephenson, 2004-08-12
Last update: Dieter Berlin, 2023-01-02 more...
1. Sxb3+? Kc4!
1. g8=D! ... 2. Tc6+ Kxc6 3. Da8+ Kc5 4. Da7+ Kc6 5. Da6+ Kc5 6. Sxb3 Sxb3#
1. g8=D! ... 2. Tc6+ Kxc6 3. Da8+ Kc5 4. Da7+ Kc6 5. Da6+ Kc5 6. Sxb3 Sxb3#
Keywords: changed blocks
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/6P1/R2P1N2/K1k1B3/P7/1p6/2pN4/n7
Input: Frank Müller, 2004-11-01
Last update: Marcin Banaszek, 2021-02-12 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/6P1/R2P1N2/K1k1B3/P7/1p6/2pN4/n7
Input: Frank Müller, 2004-11-01
Last update: Marcin Banaszek, 2021-02-12 more...
1. De5? ist zu früh
1. Da1! La7 2. Sb4 Kb8 3. Sa6+ Ka8 4. Dh8+ Lb8 5. De5 La7 6. Sxc7+ Kb8 7. Tb1+ Lb6 8. Lg1 Ka7 9. Ta1+ Kb8 10. Sa8+ Lc7 11. Dd6 Lxd6#
1. Da1! La7 2. Sb4 Kb8 3. Sa6+ Ka8 4. Dh8+ Lb8 5. De5 La7 6. Sxc7+ Kb8 7. Tb1+ Lb6 8. Lg1 Ka7 9. Ta1+ Kb8 10. Sa8+ Lc7 11. Dd6 Lxd6#
Keywords: changed blocks
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: kb5Q/2p5/2P5/2B5/8/7B/N5pK/6Rb
Input: Frank Müller, 2010-03-14
Last update: James Malcom, 2020-10-02 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: kb5Q/2p5/2P5/2B5/8/7B/N5pK/6Rb
Input: Frank Müller, 2010-03-14
Last update: James Malcom, 2020-10-02 more...
4 - P1214451
Helmer Ludvig Ternblad
664 Springaren 03/1950
Weihnachtsturnier 1949
3. Preis
(5+3)
s#3*
Helmer Ludvig Ternblad
664 Springaren 03/1950
Weihnachtsturnier 1949
3. Preis
(5+3)
s#3*
* 1. ... Dxb2#
1. Dd7 Kc2,Kxc1 2. Tc4+ Kb1 3. Da4 Dxb2#
1. Dd7 Kc2,Kxc1 2. Tc4+ Kb1 3. Da4 Dxb2#
Keywords: changed blocks, Deckungswechsel
Genre: s#
FEN: 8/8/8/8/R7/K7/pP6/qkNQ4
Input: Frank Müller, 2011-10-11
Last update: Frank Müller, 2011-10-11 more...
Genre: s#
FEN: 8/8/8/8/R7/K7/pP6/qkNQ4
Input: Frank Müller, 2011-10-11
Last update: Frank Müller, 2011-10-11 more...
1. Lc5! c3 2. Le3 c2 3. Lf4 c1=D 4. Df3+ Sxf3#
1. ... cxd3 2. Lf2 d2 3. Lh4 d1=D 4. Dh3+ Sxh3#
1. ... cxd3 2. Lf2 d2 3. Lh4 d1=D 4. Dh3+ Sxh3#
Keywords: changed blocks
Genre: s#
FEN: B7/4B3/2r5/4PPKP/2p3N1/3P4/8/5Qnk
Input: Frank Müller, 2011-10-24
Last update: Marcin Banaszek, 2022-03-10 more...
Genre: s#
FEN: B7/4B3/2r5/4PPKP/2p3N1/3P4/8/5Qnk
Input: Frank Müller, 2011-10-24
Last update: Marcin Banaszek, 2022-03-10 more...
1. Th4! c6 2. De8 c5 3. Dh5 c4 4. Tf1 c3 5. Dd1+ Sd3#
1. ... c5 2. Dd8 c4 3. Dg5 c3 4. Tf1 c2 5. Dd2+ Sd3#
1. ... c5 2. Dd8 c4 3. Dg5 c3 4. Tf1 c2 5. Dd2+ Sd3#
Keywords: Pawn step variations, changed blocks
Genre: s#
Computer test: Gustav 4.1d
FEN: 1Q3BB1/N1pP4/4r3/3knR2/R7/8/8/4K3
Input: Frank Müller, 2012-10-17
Last update: Marcin Banaszek, 2021-06-29 more...
Genre: s#
Computer test: Gustav 4.1d
FEN: 1Q3BB1/N1pP4/4r3/3knR2/R7/8/8/4K3
Input: Frank Müller, 2012-10-17
Last update: Marcin Banaszek, 2021-06-29 more...
7 - P1259692
Steven B. Dowd
Mirko Degenkolbe
1306 Schach in Schleswig-Holstein 01/2013
Lob
(7+5) C+
s#11*
Steven B. Dowd
Mirko Degenkolbe
1306 Schach in Schleswig-Holstein 01/2013
Lob
(7+5) C+
s#11*
1. Dd3+ Kg2 2. Th2+ Kg1 3. De3 Kf1 4. Th1+ Kg2 5. Le4+ Tf3 6. Th2+ Kf1 7. De2+ Kg1 8. De1+ Tf1 9. Tg2+ Kh1 10. Tc2+ Kg1 11. Kc1! Txe1#
1. .. Tf1#
1. Dh1+? Tg2 und es geht nicht weiter.
1. .. Tf1#
1. Dh1+? Tg2 und es geht nicht weiter.
Keywords: Changed mates, changed blocks
Genre: s#
FEN: 8/8/4p1p1/4P1P1/5B1R/2p2k2/2B2r2/3K1Q2
Input: Frank Müller, 2013-01-17
Last update: Olaf Jenkner, 2020-11-10 more...
Genre: s#
FEN: 8/8/4p1p1/4P1P1/5B1R/2p2k2/2B2r2/3K1Q2
Input: Frank Müller, 2013-01-17
Last update: Olaf Jenkner, 2020-11-10 more...
8 - P1264340
Bertil Einar Gedda
11296 British Chess Magazine 1978
Informalturnier 1977/78
1. Preis
(11+5)
s#5
Bertil Einar Gedda
11296 British Chess Magazine 1978
Informalturnier 1977/78
1. Preis
(11+5)
s#5
1. Db8! g3 2. Sd4+ cxd4 3. Tc5+ bxc5 4. Db3 g2 5. Se5+ Sxe5#
1. ... gxh3 2. Ta2 h2 3. Sdb4+ cxb4 4. Kb3 Kxb5 5. Sd4 Sxd4#
1. ... gxh3 2. Ta2 h2 3. Sdb4+ cxb4 4. Kb3 Kxb5 5. Sd4 Sxd4#
Keywords: changed blocks, Echo
Genre: s#
FEN: 5B2/R7/1pk1P3/1Rp5/2K3p1/3N1nQP/1PN5/7B
Input: Frank Müller, 2013-03-15
Last update: Marcin Banaszek, 2021-09-20 more...
Genre: s#
FEN: 5B2/R7/1pk1P3/1Rp5/2K3p1/3N1nQP/1PN5/7B
Input: Frank Müller, 2013-03-15
Last update: Marcin Banaszek, 2021-09-20 more...
1. c4+ Ke6 2. Tf2 Th1#
1. c4+ Ke4 2. Df2 Th1#
1. c4+ Ke4 2. Df2 Th1#
Keywords: changed blocks
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/2R5/8/1N1k1p2/1p3P1Q/1PP2R1p/2P3pr/6K1
Input: Frank Müller, 2013-03-31
Last update: Dieter Berlin, 2024-01-16 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 8/2R5/8/1N1k1p2/1p3P1Q/1PP2R1p/2P3pr/6K1
Input: Frank Müller, 2013-03-31
Last update: Dieter Berlin, 2024-01-16 more...
1. Sf3! droht 2. T4b5+ Kc4 3. T5b7+ Kc5 4. Txc7+ Txc7 5. Tb5+ Kc4 6. Tb4+ Kc5 7. Da7+ Txa7#
1. ... Se8 2. T4b5+ Kc4 3. Tb3+ Kc5 4. Txc3+ dxc3 5. Tb5+ Kc4 6. Tb3+ Kc5 7. Txc3+ Lxc3#
1. ... Lxd5 2. T4b5+ Kc4 3. Tc5+ Kxc5 4. Tb5+ Kc4 5. Tb4+ Kc5 6. Tc4+ Lxc4 7. Db6+ cxb6#
1. ... Se8 2. T4b5+ Kc4 3. Tb3+ Kc5 4. Txc3+ dxc3 5. Tb5+ Kc4 6. Tb3+ Kc5 7. Txc3+ Lxc3#
1. ... Lxd5 2. T4b5+ Kc4 3. Tc5+ Kxc5 4. Tb5+ Kc4 5. Tb4+ Kc5 6. Tc4+ Lxc4 7. Db6+ cxb6#
Keywords: Batterie Typ Popandopulo, Batterie Typ Siers, Batterietransformation, Beseitigung hinderlicher Masse, changed blocks
Genre: s#
FEN: 1R5b/2pr1rn1/Q2pb3/K1kP4/PR1pP3/2p5/2PN4/8
Input: Frank Müller, 2013-06-28
Last update: Marcin Banaszek, 2020-11-24 more...
Genre: s#
FEN: 1R5b/2pr1rn1/Q2pb3/K1kP4/PR1pP3/2p5/2PN4/8
Input: Frank Müller, 2013-06-28
Last update: Marcin Banaszek, 2020-11-24 more...
* 1. ... Th8#
1. b5 Kc5 2. Tc6+ Kd5 3. Lg6 Th8#
1. b5 Kc5 2. Tc6+ Kd5 3. Lg6 Th8#
Keywords: Deckungswechsel (c5), changed blocks (g6)
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 4K3/4P1pr/6Rp/3kn2R/1P6/2PB4/8/8
Input: Mario Richter, 2015-04-24
Last update: Dieter Berlin, 2023-11-21 more...
Genre: s#
Computer test: SCHRECKE: popeye 4.89
FEN: 4K3/4P1pr/6Rp/3kn2R/1P6/2PB4/8/8
Input: Mario Richter, 2015-04-24
Last update: Dieter Berlin, 2023-11-21 more...
1. Sc3 2. Sd5 3. Sxe7[+sBd5] 4. Sxg8[+sSe7] 5. Sf6#
Henrik Juel: C+ Popeye 4.61 also
Nice find, especially that 5... gxf6[+sSg7] does not prevent the mate (2021-02-17)
comment
Nice find, especially that 5... gxf6[+sSg7] does not prevent the mate (2021-02-17)
comment
Keywords: Homebase (s), Seriesmover, Circe (Platzwechsel-), changed blocks, Smothered mate
Genre: Fairies
Computer test: %Popeye FreeBSD-9.1-RELEASE-amd64-64Bit v4.59
FEN: rnbqkbnr/pppppppp/8/8/8/8/8/1N6
Input: Erich Bartel, 2021-02-17
Last update: Alfred Pfeiffer, 2021-08-11 more...
Genre: Fairies
Computer test: %Popeye FreeBSD-9.1-RELEASE-amd64-64Bit v4.59
FEN: rnbqkbnr/pppppppp/8/8/8/8/8/1N6
Input: Erich Bartel, 2021-02-17
Last update: Alfred Pfeiffer, 2021-08-11 more...
1. Kf8 Sf6 2. Tg7 dxe8=D#
1. Kf7 d8=D 2. Tg8 Df6#
1. Kf7 d8=D 2. Tg8 Df6#
Keywords: changed blocks
Genre: h#
FEN: 4b3/3P2k1/8/6r1/6N1/8/3K4/8
Input: Rainer Staudte, 2022-04-25
Last update: Rainer Staudte, 2022-04-25 more...
Genre: h#
FEN: 4b3/3P2k1/8/6r1/6N1/8/3K4/8
Input: Rainer Staudte, 2022-04-25
Last update: Rainer Staudte, 2022-04-25 more...
1. Txg3! droht 2. Tg8
1. ... Lc4 2. Sxb7 ... 3. Sxd6#
1. ... Sc4 2. exd7 ... 3. Le6#
1. ... Lc4 2. Sxb7 ... 3. Sxd6#
1. ... Sc4 2. exd7 ... 3. Le6#
Keywords: Intersection Theme, changed blocks
Genre: 3#
Computer test: HJ: Popeye 4.61
FEN: 3N2RB/1r1p1B1p/2PpP2P/1p1p1k1P/5n2/n2P2p1/b1P3P1/5RK1
Reprints: 190 Das schwarze Schnittpunktgefüge [Klinke] , p. 99, 1924
Input: Dieter Berlin, 2022-07-17
Last update: Dieter Berlin, 2022-07-17 more...
Genre: 3#
Computer test: HJ: Popeye 4.61
FEN: 3N2RB/1r1p1B1p/2PpP2P/1p1p1k1P/5n2/n2P2p1/b1P3P1/5RK1
Reprints: 190 Das schwarze Schnittpunktgefüge [Klinke] , p. 99, 1924
Input: Dieter Berlin, 2022-07-17
Last update: Dieter Berlin, 2022-07-17 more...
1. Sxd5! e3 2. Sc3+ Kf1 3. Dxf3+ Kg1 4. De2 Kh1 5. Le5 Kg1 6. Dh2+ Kf1 7. Se2 Ke1 8. Lb2 Kf1 9. Sg3+ Ke1 10. Dd2+ exd2#
1. ... Kf1 2. Dh1+ Ke2 3. Sc3+ Ke3 4. Le5 Kf2 5. Sd1+ Ke2 6. Dg1 f2 7. Dg2 Ke1 8. Lc3+ Ke2 9. Ld2 e3 10. Sb2 exd2#
1. ... Kf1 2. Dh1+ Ke2 3. Sc3+ Ke3 4. Le5 Kf2 5. Sd1+ Ke2 6. Dg1 f2 7. Dg2 Ke1 8. Lc3+ Ke2 9. Ld2 e3 10. Sb2 exd2#
Anton Baumann: 1. ... Kf1 2.Dh1+ ... 6.Dg1 e3 7.Sb2 f2 8.Dg2 Ke1 9.Lc3+ Ke2 10.Ld2 exd2#
C+ Gustav 4.2a (2023-05-02)
comment
C+ Gustav 4.2a (2023-05-02)
comment
Keywords: Capture key, Pawn mate, changed blocks, Change of Sacrifices
Genre: s#
FEN: 8/8/8/3p3Q/4p3/4NpB1/p1P1k3/R1K5
Input: Felber, Volker, 2022-11-21
Last update: Gunter Jordan, 2022-11-21 more...
Genre: s#
FEN: 8/8/8/3p3Q/4p3/4NpB1/p1P1k3/R1K5
Input: Felber, Volker, 2022-11-21
Last update: Gunter Jordan, 2022-11-21 more...
1. ... Th1 2. Tg1 Th2+ 3. g2 Th1 4. Sg3 Th2 5. Tf1 Th1 6. g1=S Th2#
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
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...
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...
1. ... Sxc3 2. e2 Sd5 3. Lb4 Sxe7 4. e1=T Sf5 5. Lf8 Kc8 6. Te7 Sd6#
Anirudh: Should be h#5.5 for a unique solution -
1...Sxc3 2.e2 Sd5 3.Bb4 Sxe7 4.e1=R Sf5 5.Bf8 Kc8 6.Re7 Sd6# (2023-08-08)
Joost de Heer: That's what it says already: h#6 0.1. is an old way of writing h#5.5 (2023-08-08)
A.Buchanan: Guess the pawn grabbing is thematic: -sBc3, wSb1/d1 is still unique (2023-08-08)
comment
1...Sxc3 2.e2 Sd5 3.Bb4 Sxe7 4.e1=R Sf5 5.Bf8 Kc8 6.Re7 Sd6# (2023-08-08)
Joost de Heer: That's what it says already: h#6 0.1. is an old way of writing h#5.5 (2023-08-08)
A.Buchanan: Guess the pawn grabbing is thematic: -sBc3, wSb1/d1 is still unique (2023-08-08)
comment
Keywords: Minimal (S), Miniature, Line opening, Switchback (S), under-promotion (t), Selfblock, Ideal mate, Line closing, changed blocks, Square vacation
Genre: h#
Computer test: Gustav 4.2
FEN: 4k3/1K2p3/8/3N4/8/2p1p3/8/4b3
Input: Eberhard Schulze, 2023-08-08
Last update: Felber, Volker, 2023-12-13 more...
Genre: h#
Computer test: Gustav 4.2
FEN: 4k3/1K2p3/8/3N4/8/2p1p3/8/4b3
Input: Eberhard Schulze, 2023-08-08
Last update: Felber, Volker, 2023-12-13 more...
1. La2? axb4#
1. ... Kc2!,Kd2!
1. De1+? Kd3 2. Te4! Kc2 3. La2! Kd3 4. De2+ Kc3 5. Tb4! axb4#
1. ... Kc2!
1. Tb2! Kd4 2. La2! Kd3 3. De2+ Kd4! 4. Tb5! Kc3 5. Tb4 axb4#
2. ... Kc3 3. De2! Kd4 4. Tb5! Kc3 5. Tb4! axb4#
2. ... Kc5 3. Tb5+ Kd4 4. De2! Kc3 5. Tb4! axb4#
1. ... Kd3 2. Db6! Kc3 3. Le4! Kc4 4. Ta2! Kc3 5. Db4+ axb4#
1. ... Kc2!,Kd2!
1. De1+? Kd3 2. Te4! Kc2 3. La2! Kd3 4. De2+ Kc3 5. Tb4! axb4#
1. ... Kc2!
1. Tb2! Kd4 2. La2! Kd3 3. De2+ Kd4! 4. Tb5! Kc3 5. Tb4 axb4#
2. ... Kc3 3. De2! Kd4 4. Tb5! Kc3 5. Tb4! axb4#
2. ... Kc5 3. Tb5+ Kd4 4. De2! Kc3 5. Tb4! axb4#
1. ... Kd3 2. Db6! Kc3 3. Le4! Kc4 4. Ta2! Kc3 5. Db4+ axb4#
1. Dh3+ Ke4 2. Tg4+ Kd5,Kf5 3. Lf8 Ke5 4. Th4 Kd5 5. Dd7+ Ke5 6. Te6+ Kf5 7. Tg6+ Ke5 8. Dd4+ Kf5 9. Lh6 hxg6#
Keywords: changed blocks
Genre: s#
FEN: 8/7p/3B2RR/5k1K/7Q/8/8/8
Input: Rainer Staudte, 2023-11-30
Last update: Rainer Staudte, 2023-11-30 more...
Genre: s#
FEN: 8/7p/3B2RR/5k1K/7Q/8/8/8
Input: Rainer Staudte, 2023-11-30
Last update: Rainer Staudte, 2023-11-30 more...
1) 1. ... Th4 2. Le6 Lxa6 3. Td5 Tc4#
2) 1. ... Th6 2. Td4 Txa6 3. Ld5 Ld6#
19.902 (Richter) I) 1… Th4 2.Le6 L:a6 3.Td5 Tc4 matt; II) 1… Th6 2.Td4 T:a6 3.Ld5 Ld6 matt (3 P.). „Nicht voll harmonisch, aber 4-fache Schnittpunktüberschreitung um auf den kritischen Feldern blocken (mit Blockwechsel) oder mattsetzen zu können. Schwarzer Funktionswechsel und weißer zyklischer Funktionstausch der drei beteiligten Figuren. Starke Thematik“ (GJ). „Filigrane Arbeit“ (HR).
2) 1. ... Th6 2. Td4 Txa6 3. Ld5 Ld6#
19.902 (Richter) I) 1… Th4 2.Le6 L:a6 3.Td5 Tc4 matt; II) 1… Th6 2.Td4 T:a6 3.Ld5 Ld6 matt (3 P.). „Nicht voll harmonisch, aber 4-fache Schnittpunktüberschreitung um auf den kritischen Feldern blocken (mit Blockwechsel) oder mattsetzen zu können. Schwarzer Funktionswechsel und weißer zyklischer Funktionstausch der drei beteiligten Figuren. Starke Thematik“ (GJ). „Filigrane Arbeit“ (HR).
Yuri Bilokin: more economical bQa6(-bPa6), bRf7(-bPf7), -bPd7, then a1=a2 2B2r2/q2r4/2k5/2b5/3B4/8/6KR/8 (4+5) h#3 0.2.1…
1...Rh5 2.Be7 Bxa7 3.Rd6 Rc5# (MM)
1...Rh7 2.Rd5 Rxa7 3.Bd6 Bd7# (MM) (2024-02-09)
comment
1...Rh5 2.Be7 Bxa7 3.Rd6 Rc5# (MM)
1...Rh7 2.Rd5 Rxa7 3.Bd6 Bd7# (MM) (2024-02-09)
comment
Keywords: Intersection Theme, changed blocks, Exchange of roles
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/2Bp1p2/p2r4/2k5/2b5/3B4/8/6KR
Input: Felber, Volker, 2024-02-02
Last update: Felber, Volker, 2024-02-02 more...
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/2Bp1p2/p2r4/2k5/2b5/3B4/8/6KR
Input: Felber, Volker, 2024-02-02
Last update: Felber, Volker, 2024-02-02 more...
* 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#
1. h8=T! Kc3 2. Th1! Kc4 3. Ta1! Kc3 4. Ta3+ Kc4 5. Tb5! axb5#
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...
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...
* 1. ... Kc6 2. De7! Kd5 3. Dd7+ Kc5 4. Lb6+ axb6#
1. Td4+! Kc6 2. Df4! Kc5 3. Td7! Kc6 4. Da4+ Kc5 5. Lb6+ axb6#
1. Td4+! Kc6 2. Df4! Kc5 3. Td7! Kc6 4. Da4+ Kc5 5. Lb6+ axb6#
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