26 problem(s) found in 2705 milliseconds (displaying 26 problem(s)). [COMMENTDATE>=20220810 AND NOT K='fluchtfeldgebender Schlüssel' AND S='Sinfonie Scacchistiche'] [download as LaTeX]
a) 1. Sxb4 Sxc3 2. Ka5 Sxc4#
b) 1. cxb3ep Sc4 2. Sb4 Sxc3#
b) 1. cxb3ep Sc4 2. Sb4 Sxc3#
a) 1. f5 Le5 2. 0-0 Th8#
b) 1. Kd8 0-0-0 2. Te8 Lf8#
Try to deduce the diagram error, as we do have the intended solutions!
a) wRh7 is original, but cannot have escaped from cage by white cross-capture as there are too many captures needed. On the other hand, Black only has to make 4 captures so the cross-capture is ok.
b) changing the colour of Sa5 shifts the capture balance: now White can cross-capture but not Black, so White but not Black can castle.
Thus the retro-logic works with the diagram as it is, but the forward logic does not. How can we repair the diagram?
b) 1. Kd8 0-0-0 2. Te8 Lf8#
Try to deduce the diagram error, as we do have the intended solutions!
a) wRh7 is original, but cannot have escaped from cage by white cross-capture as there are too many captures needed. On the other hand, Black only has to make 4 captures so the cross-capture is ok.
b) changing the colour of Sa5 shifts the capture balance: now White can cross-capture but not Black, so White but not Black can castle.
Thus the retro-logic works with the diagram as it is, but the forward logic does not. How can we repair the diagram?
See P0000899 a companion problem.
A.Buchanan: Something odd going on here. There are numerous h#2 in both a&b. PRA not normally found in a problem with single solution for each twin. White has 8 pawns so trivially wRh7 must be original. (2018-10-13)
A.Buchanan: There are three similar problems by Brogi which are all twinned RS rather than PRA, but don't have diagram error. P0003743, P0003746 & P0003747. (2018-10-13)
VL: Nothing to do with Retro Strategy (nor with PRA). One definite castling is legal in every case. (2021-02-09)
Ladislav Packa: Cooked a) and b):
1...b8S and 2...R:h8# (2021-02-10)
A.Buchanan: I think the composer simply forgot that wPb7 can promote. Most of the cooks come from S promotions, but it's also possible to have QR. I've fixed it, rejigging the captures to make them still add up. I've posted in Discord, as I did with the partner composition, and will create entries for them here. (2022-03-15)
milan: +sLb8 sBa7=sT M.Frelih (2023-12-02)
A.Buchanan: Hi Milan - I don't think your suggestion quite works for b). In a) there are 0+2 spare captures, so Black can certainly cross-capture. But in b) there is 1+1 so neither side can cross-capture, so there is no solution. Please compare with P1399806, in which there are 1+2 & 2+1 spare captures, so both twins are sound. (2023-12-03)
milan: Hi Andrew my correction works only with 2.1... solutions, black or white knights on a5. are not important. (2023-12-03)
A.Buchanan: Hi Milan not really clear what you are doing, but if as well as the piece changes you proposed, you also change the stipulation to 2.1... then there is still only one solution. Even if you remove Sa5 entirely as well, there is no White cross-capture possible. (2023-12-04)
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A.Buchanan: Something odd going on here. There are numerous h#2 in both a&b. PRA not normally found in a problem with single solution for each twin. White has 8 pawns so trivially wRh7 must be original. (2018-10-13)
A.Buchanan: There are three similar problems by Brogi which are all twinned RS rather than PRA, but don't have diagram error. P0003743, P0003746 & P0003747. (2018-10-13)
VL: Nothing to do with Retro Strategy (nor with PRA). One definite castling is legal in every case. (2021-02-09)
Ladislav Packa: Cooked a) and b):
1...b8S and 2...R:h8# (2021-02-10)
A.Buchanan: I think the composer simply forgot that wPb7 can promote. Most of the cooks come from S promotions, but it's also possible to have QR. I've fixed it, rejigging the captures to make them still add up. I've posted in Discord, as I did with the partner composition, and will create entries for them here. (2022-03-15)
milan: +sLb8 sBa7=sT M.Frelih (2023-12-02)
A.Buchanan: Hi Milan - I don't think your suggestion quite works for b). In a) there are 0+2 spare captures, so Black can certainly cross-capture. But in b) there is 1+1 so neither side can cross-capture, so there is no solution. Please compare with P1399806, in which there are 1+2 & 2+1 spare captures, so both twins are sound. (2023-12-03)
milan: Hi Andrew my correction works only with 2.1... solutions, black or white knights on a5. are not important. (2023-12-03)
A.Buchanan: Hi Milan not really clear what you are doing, but if as well as the piece changes you proposed, you also change the stipulation to 2.1... then there is still only one solution. Even if you remove Sa5 entirely as well, there is no White cross-capture possible. (2023-12-04)
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Keywords: Castling (wgsk), Cant Castler (wgsk), Cross-capture (s,w), Superseded by (P1399806)
Genre: h#, Retro
Computer test: Popeye v4.87
FEN: 4k2r/pPp2p1R/n1pB1ppp/npP5/1P6/5PPP/2P2P2/R3K3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-12-03 more...
Genre: h#, Retro
Computer test: Popeye v4.87
FEN: 4k2r/pPp2p1R/n1pB1ppp/npP5/1P6/5PPP/2P2P2/R3K3
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2023-12-03 more...
*) 1. ... g4#
1) 1. Sxg3 Kxg3 2. g4 Tf5#
1) 1. Sxg3 Kxg3 2. g4 Tf5#
Yuri Bilokin: 1. ... g4#, white rook extra (2023-06-24)
Ladislav Packa: There is one interesting possibility, wRg3 instead of wPg3. The set play is then replaced by the second solution. Zilahi theme, C+ by Popeye v4.63
1.Sh1xg3 Kh3xg3 2.g5-g4 Rf2-f5#
1.Sh1xf2 + Kh3-g2 2.Sf2-g4 Rg3-h3# (2023-06-24)
Yuri Bilokin: Ladislav, in the proposed edition can be seen 1...Rh2 2.Sxg3 Kxg3#. There is a better implementation of the Zilahi theme for this white material P0527728 (2023-06-26)
Ladislav Packa: Zilahi is just one part of the theme, besides it contains multiple tempo play.
1. ...Rh2 (thr. 2.Kg2#) 2.Sxg3 Kxg3#
1.g4+? Rxg4 (thr. 2.Rf5#) but 2.Sxg3, Sxf2+
1.Sxg3 Kxg3 (thr. 2.Rh2#) 2.g4 Rh5#
1.Sxf2+ Kg2 2.Sg4 Rh3# (2023-06-27)
comment
Ladislav Packa: There is one interesting possibility, wRg3 instead of wPg3. The set play is then replaced by the second solution. Zilahi theme, C+ by Popeye v4.63
1.Sh1xg3 Kh3xg3 2.g5-g4 Rf2-f5#
1.Sh1xf2 + Kh3-g2 2.Sf2-g4 Rg3-h3# (2023-06-24)
Yuri Bilokin: Ladislav, in the proposed edition can be seen 1...Rh2 2.Sxg3 Kxg3#. There is a better implementation of the Zilahi theme for this white material P0527728 (2023-06-26)
Ladislav Packa: Zilahi is just one part of the theme, besides it contains multiple tempo play.
1. ...Rh2 (thr. 2.Kg2#) 2.Sxg3 Kxg3#
1.g4+? Rxg4 (thr. 2.Rf5#) but 2.Sxg3, Sxf2+
1.Sxg3 Kxg3 (thr. 2.Rh2#) 2.g4 Rh5#
1.Sxf2+ Kg2 2.Sg4 Rh3# (2023-06-27)
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Genre: h#
Computer test: (Popeye C-Version 3.52 (2048 KB))
FEN: 7N/8/7p/6pk/8/6PK/5R2/7n
Input: Ralf Krätschmer, 1998-03-30
Last update: Rainer Staudte, 2013-01-05 more...
1) 1. e2 Lc7 2. Le3 Sf6#
2) 1. Le7 Lh2 2. Dg4 Sf4#
NL:
1. e2 Txf7 2. Dg7 Se3#
1. Dg7 Txf7 2. e2 Se3#
2) 1. Le7 Lh2 2. Dg4 Sf4#
NL:
1. e2 Txf7 2. Dg7 Se3#
1. Dg7 Txf7 2. e2 Se3#
Genre: h#
FEN: B4Rq1/5r2/8/K2N2b1/1P3B2/2P1pk2/5p2/8
Input: hpr, 1999-03-11
Last update: hpr, 1999-03-11 more...
1) 1. Sxa2 Txa2 2. g1=S Th2#
2) 1. Sxd5 b4 2. g1=L Lxd5#
3) 1. Lb2 Kxb2 2. g1=T Th8#
NL:
1. Sxa2 Kxa2 2. g1=T Txh8#
2) 1. Sxd5 b4 2. g1=L Lxd5#
3) 1. Lb2 Kxb2 2. g1=T Th8#
NL:
1. Sxa2 Kxa2 2. g1=T Txh8#
Genre: h#
FEN: R6b/8/8/3P4/1n6/1P2p3/B1R3p1/1K5k
Input: Franz Pachl, 1999-03-29
Last update: hpr, 1999-12-19 more...
1. Ld2 droht 2. Dg2+ Lxg2#
1. Ld2 f3 2. De2+ fxe2#
1. Ld2 Td5 2. Dd3+ Txd3#
1. Ld2 Tb7 2. Db1+ Txb1#
1. Ld2 Tc6 2. Dc4+ Txc4#
1. Ld2 Sd5 2. Dxf4+ Sxf4#
Steigetreu Marysko 1975 = P1195611
VG Prytz 1925
1. Ld2 f3 2. De2+ fxe2#
1. Ld2 Td5 2. Dd3+ Txd3#
1. Ld2 Tb7 2. Db1+ Txb1#
1. Ld2 Tc6 2. Dc4+ Txc4#
1. Ld2 Sd5 2. Dxf4+ Sxf4#
Steigetreu Marysko 1975 = P1195611
VG Prytz 1925
Duplicate Diagram: P1195611
Keywords: dentist theme, anticipated
Genre: s#
FEN: b6q/2n5/1r6/7r/4Qpp1/8/7R/4Bk1K
Input: Frank Müller, 2011-11-12
Last update: Frank Müller, 2011-11-12 more...
Genre: s#
FEN: b6q/2n5/1r6/7r/4Qpp1/8/7R/4Bk1K
Input: Frank Müller, 2011-11-12
Last update: Frank Müller, 2011-11-12 more...
7 - P1365458
Antonio Garofalo
Enzo Minerva
952 Sinfonie Scacchistiche
ehrende Erwähnung
Jubilee-50 Sinfonie Scacchistiche 2015
(11+15) C+
KBP 14.5
Antonio Garofalo
Enzo Minerva
952 Sinfonie Scacchistiche
ehrende Erwähnung
Jubilee-50 Sinfonie Scacchistiche 2015
(11+15) C+
KBP 14.5
1. g3 c5 2. Lh3 Da5 3. Kf1 Dxa2 4. Kg2 Dxb1 5. Kf3 Dxc1 6. Ke4 d5+ 7. Kxd5 Dxd1 8. Kc4 Dxg1 9. Lf1 Lh3 10. Kb3 Sd7 11. Ka2 0-0-0 12. Kb1 Kb8 13. Kc1 Ka8 14. Kd1 Tb8 15. Ke1
Henrik Juel: Natch 3.1 was stopped after several hours after pos. 214000
The intended solution was found at pos. 22091 (2019-07-10)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 18 Min. 22 Sek.
Keine Lösung bei BP 13.5 und 14.0, Zeit dafür ca. 7 Min. (2022-12-23)
comment
The intended solution was found at pos. 22091 (2019-07-10)
Moldenhauer: Computerprüfung: C+ Euclide 1.11 18 Min. 22 Sek.
Keine Lösung bei BP 13.5 und 14.0, Zeit dafür ca. 7 Min. (2022-12-23)
comment
Keywords: Unique Proof Game, Round Trip (K)
Genre: Retro
Computer test: Stelvio 1.25, 5min
FEN: kr3bnr/pp1npppp/8/2p5/8/6Pb/1PPPPP1P/R3KBqR
Reprints: Sinfonie Scacchistiche 126 10-12/2016
Input: Mario Richter, 2019-07-10
Last update: Reto, 2023-05-28 more...
Genre: Retro
Computer test: Stelvio 1.25, 5min
FEN: kr3bnr/pp1npppp/8/2p5/8/6Pb/1PPPPP1P/R3KBqR
Reprints: Sinfonie Scacchistiche 126 10-12/2016
Input: Mario Richter, 2019-07-10
Last update: Reto, 2023-05-28 more...
* 1. ... Kxc5 2. Db6# 1. ... Kxe5 2. Lg7#
1. Dg5? Kxc5 2. De3# 1. ... Kxe5 2. Dg7# 1. ... Sf4!
1. Da8? Kxc5 2. Da7# 1. ... Kxe5 2. Da1# 1. ... Sc3!
1. Dh4! Kxc5 2. Dxf2# 1. ... Kxe5 2. Dh8#
1. Dg5? Kxc5 2. De3# 1. ... Kxe5 2. Dg7# 1. ... Sf4!
1. Da8? Kxc5 2. Da7# 1. ... Kxe5 2. Da1# 1. ... Sc3!
1. Dh4! Kxc5 2. Dxf2# 1. ... Kxe5 2. Dh8#
Keywords: Zagoruiko (Vierphasen-), pin-mate (achtfach), Rook sacrifice (doppelt)
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 3Q1B2/1K6/2PP4/2RnRP2/1pPkb1P1/1P3p1N/3P1p2/3N1B2
Reprints: 1744 Beispiele zur Ideengeschichte des Schachproblems , p. 354, 1982
Input: Dieter Berlin, 2022-08-28
Last update: Dieter Berlin, 2022-08-28 more...
Genre: 2#
Computer test: SCHRECKE: popeye 4.87
FEN: 3Q1B2/1K6/2PP4/2RnRP2/1pPkb1P1/1P3p1N/3P1p2/3N1B2
Reprints: 1744 Beispiele zur Ideengeschichte des Schachproblems , p. 354, 1982
Input: Dieter Berlin, 2022-08-28
Last update: Dieter Berlin, 2022-08-28 more...
1) 1. Lg1xh2 Sb5xc3+ 2. Ke4-f3 Tg5-f5#
2) 1. a6xb5 Tg5-e5+ 2. Ke4-d4 Sh2-f3#
3) 1. f6xg5 Sh2-g4 2. Ke4-f5 Sb5-d6#
2) 1. a6xb5 Tg5-e5+ 2. Ke4-d4 Sh2-f3#
3) 1. f6xg5 Sh2-g4 2. Ke4-f5 Sb5-d6#
Genre: h#
Computer test: Popeye 4.83
FEN: 8/8/p4p2/PNpP2RK/2p1k3/2p3P1/2P2PpN/6b1
Input: Marcin Banaszek, 2022-09-08
Last update: Marcin Banaszek, 2022-09-08 more...
1) 1. e7-e5 Lb3-e6 2. b4-b3 Sf7-g5#
2) 1. e7-e6 d6-d7 2. e6-e5 Sf7-d6#
3) 1. e7xf6 Lb3-a4 2. f6-f5 La4-c6#
4) 1. e7xd6 Lb3-c4 2. d6-d5 Lc4-d3#
2) 1. e7-e6 d6-d7 2. e6-e5 Sf7-d6#
3) 1. e7xf6 Lb3-a4 2. f6-f5 La4-c6#
4) 1. e7xd6 Lb3-c4 2. d6-d5 Lc4-d3#
Genre: h#
Computer test: Popeye 4.83
FEN: 8/4pN2/3P1P2/8/1p2k3/1Bp1P3/2P1K3/8
Input: Marcin Banaszek, 2022-11-30
Last update: Marcin Banaszek, 2022-11-30 more...
1. De4? Txe4! 1. De3? Texe3!
1. Df3! droht 2. f8=D,T Sxf8 3. Dxf8#,Df6#
1. ... Lxf3 2. Le4 Txe4 3. Sc6# 2. ... Lxe4 3. e7#
1. ... Txf3 2. Te3 Texe3 3. Lxb6# 2. ... Lxe3 3. e7#
1. Df3! droht 2. f8=D,T Sxf8 3. Dxf8#,Df6#
1. ... Lxf3 2. Le4 Txe4 3. Sc6# 2. ... Lxe4 3. e7#
1. ... Txf3 2. Te3 Texe3 3. Lxb6# 2. ... Lxe3 3. e7#
Keywords: vornehmer Nowotny, Kritische Lenkung, Sacrifice key, Pawn mate, Sacrifice of white pieces (D, T, L)
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 1N1k3K/Bb1P1PNn/1p1PP1p1/8/8/Rr1Q4/5b2/nB2r3
Reprints: D120 Knobeln Sie auch gern? [Pachl] , p. 86, 2009
Input: Dieter Berlin, 2022-12-08
Last update: Dieter Berlin, 2022-12-08 more...
Genre: 3#
Computer test: Juel: Popeye 4.61
FEN: 1N1k3K/Bb1P1PNn/1p1PP1p1/8/8/Rr1Q4/5b2/nB2r3
Reprints: D120 Knobeln Sie auch gern? [Pachl] , p. 86, 2009
Input: Dieter Berlin, 2022-12-08
Last update: Dieter Berlin, 2022-12-08 more...
1. Da7! Kf6 2. Df7+ Ke5 3. De6#
1. ... Kd6 2. Lf4+ Kd5 3. Dd4#
1. ... Ke4 2. De3+ Kf5 3. De6#
2. ... Kd5 3. Dd4#
1. ... Kd5 2. Dd4#
1. ... Kf5 2. De7 droht 3. De6#
2. ... Kg6 3. Df7#
1. ... c5 2. De7+ Kd5 3. De6#
2. ... Kf5 3. De6#
1. ... Kd6 2. Lf4+ Kd5 3. Dd4#
1. ... Ke4 2. De3+ Kf5 3. De6#
2. ... Kd5 3. Dd4#
1. ... Kd5 2. Dd4#
1. ... Kf5 2. De7 droht 3. De6#
2. ... Kg6 3. Df7#
1. ... c5 2. De7+ Kd5 3. De6#
2. ... Kf5 3. De6#
1. Lg7+! Kc5 2. Lf8+ Te7 3. Tc6+ Kb4 4. Tc7 Ka4 5. Lc6+ Kb4 6. Td7 Kc5 7. La4 Kb4 8. Lc2 Kc5 9. Dd4+ Kc6 10. Le4+ Txe4 11. Da4+ Txa4#
Cook: NL 1. Lb2+! Kc5 2. La3+ Tb4 3. Dg3 Kc4! 4. Tc6+ Kd4 5. Td6+ Kc4! 6. Lf1+ Kc5 7. Lh3 Kc4 8. Dd3+ Kc5 9. Td7 Kc6 10. Dc2+ Tc4 11. Da4+ Txa4# (SCHRECKE 2023-01-01)
Cook: NL 1. Lb2+! Kc5 2. La3+ Tb4 3. Dg3 Kc4! 4. Tc6+ Kd4 5. Td6+ Kc4! 6. Lf1+ Kc5 7. Lh3 Kc4 8. Dd3+ Kc5 9. Td7 Kc6 10. Dc2+ Tc4 11. Da4+ Txa4# (SCHRECKE 2023-01-01)
Keywords: Aristocrat, Minimal (t), Miniature, Checking key
Genre: s#
FEN: 8/8/K6R/3k4/3Br3/3Q4/6B1/8
Input: Rainer Staudte, 2023-01-01
Last update: Marcin Banaszek, 2023-01-04 more...
Genre: s#
FEN: 8/8/K6R/3k4/3Br3/3Q4/6B1/8
Input: Rainer Staudte, 2023-01-01
Last update: Marcin Banaszek, 2023-01-04 more...
14 - P1407071
Aleksey Ivunin
366 Sinfonie Scacchistiche 147 01-03/2022
(3+3)
h#2
b) wSe2->d1
c) wSe2<->sKh1
d) wLe2
Aleksey Ivunin
366 Sinfonie Scacchistiche 147 01-03/2022
(3+3)
h#2
b) wSe2->d1
c) wSe2<->sKh1
d) wLe2
a) 1. f2-f1=S Le1-f2 2. Sf1-h2 Se2-g3#
b) 1. f2-f1=T Le1-g3 2. Tf1-g1 Sd1-f2#
c) 1. g2-g1=S Le1-d2 2. Sg1-f3 Sh1-g3#
d1) 1. f2-f1=S Le1-g3 2. g2-g1=L Le2-f3#
d2) 1. g2-g1=L Le1xf2 2. Lg1-h2 Le2-f3#
b) 1. f2-f1=T Le1-g3 2. Tf1-g1 Sd1-f2#
c) 1. g2-g1=S Le1-d2 2. Sg1-f3 Sh1-g3#
d1) 1. f2-f1=S Le1-g3 2. g2-g1=L Le2-f3#
d2) 1. g2-g1=L Le1xf2 2. Lg1-h2 Le2-f3#
Henrik Juel: C+ Popeye 4.61 also (2023-01-04)
Henrik Juel: '2 solutions' should be added to part d), I guess (2023-01-04)
comment
Henrik Juel: '2 solutions' should be added to part d), I guess (2023-01-04)
comment
1. Tf7! Lf6 2. Tf8! De7 3. Da6+ Ke5 4. Te8! Dxe8 5. De2+ Kd6,K~ 6. Dxe8 1-0
1. ... Le7 2. Db4+ Kd7 3. Db5+ Ke6 4. Dc4+ Kd7 5. Th7! Db6 6. Dg4+ De6 7. Da4+ Kd8 8. Th8+ Kc7 9. Dxa7+ Kd6 10. Th6+! Lf6 11. Da6+ Kd5,Ke5 12. Txf6,Th5+ 1-0
1. ... Le7 2. Db4+ Kd7 3. Db5+ Ke6 4. Dc4+ Kd7 5. Th7! Db6 6. Dg4+ De6 7. Da4+ Kd8 8. Th8+ Kc7 9. Dxa7+ Kd6 10. Th6+! Lf6 11. Da6+ Kd5,Ke5 12. Txf6,Th5+ 1-0
Anton Baumann: Dual nach 1. ... Le7 2.Da6+! Kd7 3.Db5+ Ke6 4.Dc4+ ...
2. ... Ke5 3.Db5+ Kd6 4.Tf3 Dc8+ 5.Tc3 Da8 6.Dc5+ Kd7 7.Td3+ Ke8 8.Dh5+ Kf8 9.Dh8+ +_
2. ... Db6 3.Da3+ Kd5 4.Dxe7 Dg6+ 5.Kc3 Dc6+ 6.Kd2 Dh6+ 7.De3 Dd6 8.Dd3+ +_ (2024-02-06)
comment
2. ... Ke5 3.Db5+ Kd6 4.Tf3 Dc8+ 5.Tc3 Da8 6.Dc5+ Kd7 7.Td3+ Ke8 8.Dh5+ Kf8 9.Dh8+ +_
2. ... Db6 3.Da3+ Kd5 4.Dxe7 Dg6+ 5.Kc3 Dc6+ 6.Kd2 Dh6+ 7.De3 Dd6 8.Dd3+ +_ (2024-02-06)
comment
1. Sf3 Sc6 2. Se5 Sd4 3. Sxd7 Sxe2 4. Sb8 Sg1 5. Ld3 Le6 6. Lg6 Lb3 7. axb3 hxg6 8. Ta5 Txh2 9. Th5 Th4 10. Th8 Ta4 11. Dh5 Ta1 12. Dh6 gxh6 13. d4 Lg7 14. Lf4 Lf6 15. Lxc7 Lg5 16. Le5 Lc1 17. Lg7 f6 18. Lf8
Sg1<->Sb8; Ta1<->Th8; Lc1<->Lf8.
Sg1<->Sb8; Ta1<->Th8; Lc1<->Lf8.
Michel Caillaud: previously published : 46th-51st Place, 10th WCCT 2016-17 (2023-01-06)
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Keywords: Unique Proof Game, Belfort (TLStls), Interchange (Ss, Tt, Ll)
Genre: Retro
Computer test: C+ Euclide 1.01
FEN: rN1qkBnR/pp2p3/5ppp/8/3P4/1P6/1PP2PP1/rNb1K1nR
Input: Marcin Banaszek, 2023-01-05
Last update: Marcin Banaszek, 2023-01-06 more...
Genre: Retro
Computer test: C+ Euclide 1.01
FEN: rN1qkBnR/pp2p3/5ppp/8/3P4/1P6/1PP2PP1/rNb1K1nR
Input: Marcin Banaszek, 2023-01-05
Last update: Marcin Banaszek, 2023-01-06 more...
17 - P1407120
Aleksey Ivunin
Aleksandr Pankratiev
401 Sinfonie Scacchistiche 148 04-06/2022
(4+12) C+
h#3
2.1...
Aleksey Ivunin
Aleksandr Pankratiev
401 Sinfonie Scacchistiche 148 04-06/2022
(4+12) C+
h#3
2.1...
1) 1. Te3-e6 d5xe6 2. Lg1-c5 Td7xd2 3. Db6-b5 Lh1-d5#
2) 1. Lg4-e6 d5xe6 2. Kc4-c5 Lh1xb7 3. Th4-c4 Td7-d5#
2) 1. Lg4-e6 d5xe6 2. Kc4-c5 Lh1xb7 3. Th4-c4 Td7-d5#
Yuri Bilokin: more economical -bNg3 1n6/1p1R4/1q6/3P2K1/1pk3br/2p1r3/3p4/6bB (4+11) (2023-01-08)
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Genre: h#
Computer test: Popeye 4.83
FEN: 1n6/1p1R4/1q6/3P2K1/1pk3br/2p1r1n1/3p4/6bB
Input: Marcin Banaszek, 2023-01-06
Last update: Marcin Banaszek, 2023-01-06 more...
1) 1. Lc7-a5 Lg1-h2 2. Kd2-e3 b4-b5 3. La5-d2 Lh2-g1#
2) 1. Th8-h2 Lc4-d5 2. Kd2-d3 g2-g3 3. Th2-d2 Ld5-c4#
2) 1. Th8-h2 Lc4-d5 2. Kd2-d3 g2-g3 3. Th2-d2 Ld5-c4#
Yuri Bilokin: more economical bQh8(-bRh8) -bPg5 2r4q/2b5/4K3/4p3/1PB1ppp1/1P6/1Pnk2P1/6B1 (7+9) (2023-01-08)
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Genre: h#
Computer test: Popeye 4.83
FEN: 2r4r/2b5/4K3/4p1p1/1PB1ppp1/1P6/1Pnk2P1/6B1
Input: Marcin Banaszek, 2023-01-06
Last update: Marcin Banaszek, 2023-01-06 more...
19 - P1407126
Anatoly Kirichenko
Aleksandr Pankratiev
407 Sinfonie Scacchistiche 148 04-06/2022
(2+6) C+
h#4
0.2.1...
Anatoly Kirichenko
Aleksandr Pankratiev
407 Sinfonie Scacchistiche 148 04-06/2022
(2+6) C+
h#4
0.2.1...
1) 1. ... La1-c3 2. Lh1-e4 Lc3-e1 3. Le5-c3 Ke7-e6 4. Kc5-d4 Le1-f2#
2) 1. ... La1-b2 2. Le5-c3 Lb2-a3+ 3. Kc5-d4 Ke7-d6 4. Lh1-e4 La3-c5#
2) 1. ... La1-b2 2. Le5-c3 Lb2-a3+ 3. Kc5-d4 Ke7-d6 4. Lh1-e4 La3-c5#
Yuri Bilokin: more economical bRd3(-bPd3), -bPa7 8/4K3/8/2k1b3/2p5/3r4/8/B6b (2+5) h#4 0.2…
1...Bb2 2.Bc3 Ba3+ 3.Kd4 Kd6 4.Be4 Bc5#
1...Bc3 2.Be4 Ba5 3.Bc3 Ke6 4.Kd4 Bb6# (2023-01-08)
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1...Bb2 2.Bc3 Ba3+ 3.Kd4 Kd6 4.Be4 Bc5#
1...Bc3 2.Be4 Ba5 3.Bc3 Ke6 4.Kd4 Bb6# (2023-01-08)
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Genre: h#
Computer test: Popeye 4.83
FEN: 8/p3K3/8/2k1b3/2p5/3p4/8/B6b
Input: Marcin Banaszek, 2023-01-06
Last update: Marcin Banaszek, 2023-01-06 more...
1) 1. ... Da7-h7 2. Tf5-f3 Dh7xe4+ 3. Kd3xe4 Sa4xc5#
2) 1. ... Da7-c7 2. Sc5-b3 Dc7xc4+ 3. Kd3xc4 Sa4-b2#
2) 1. ... Da7-c7 2. Sc5-b3 Dc7xc4+ 3. Kd3xc4 Sa4-b2#
Yuri Bilokin: more economical wKh1-b6(-wPb6), wQa7-e8, -wPb4, bPb5-d7, -bPa6, +bQg5, +bBh6 (7+10) h#3 0.2.111
1...Qg6 2.Rf3 Qxe4+ 3.Kxe4 Sxc5#
1...Qc8 2.Sb3 Qxc4+ 3.Kxc4 Sb2#
Active sacrifice (white) × 2
Ambush (wQ) × 2
Analogy (complete)
Kniest theme × 2
Model mate × 2 (2023-01-08)
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1...Qg6 2.Rf3 Qxe4+ 3.Kxe4 Sxc5#
1...Qc8 2.Sb3 Qxc4+ 3.Kxc4 Sb2#
Active sacrifice (white) × 2
Ambush (wQ) × 2
Analogy (complete)
Kniest theme × 2
Model mate × 2 (2023-01-08)
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Genre: h#
Computer test: Popeye 4.83
FEN: 8/Q7/pP6/1pnbrr2/NPp1p1P1/2Pk2P1/3P4/7K
Input: Marcin Banaszek, 2023-01-06
Last update: Marcin Banaszek, 2023-01-06 more...
1. Sc3 Sf6 2. Sd5 Se4 3. Sxe7 Sxd2 4. Sg8 Sb1 5. Lg5 De7 6. f4 De3 7. Ld8 Dc1 8. e3 h5 9. La6 b5 10. Se2 Lb7 11. Tg1 Lxg2 12. Lc8 Lf1 13. Txg7 Th6 14. Th7 Tg6 15. Th8 Tg1 16. Sg3 Th1
Sb1<->Sg8 Lc1<->Dd8 Lf1<->Lc8 Th1<->Th8
Sb1<->Sg8 Lc1<->Dd8 Lf1<->Lc8 Th1<->Th8
Michel Caillaud: previously published : 43th-45th Place, 10th WCCT 2016-17 (2023-01-08)
more ...
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Genre: Retro
FEN: rnBBkbNR/p1pp1p2/8/1p5p/5P2/4P1N1/PPP4P/RnqQKb1r
Input: Marcin Banaszek, 2023-01-07
Last update: A.Buchanan, 2023-01-08 more...
1. c8=D? Ke5+! 2. Ke8 Dd5 3. Dc3+ Kd6! 4. Df6+ Kc7! 5. Df4+ Kc8 6. Kf8 Dc5! 7. Kf7 Dh5+! 8. Kf8
6. Dg4+ Kc7! 5. Kf8 Dc5!
3. Kf8 Df3+! oder
2. ... Kf6 3. Dc6+,Da6+ Kg7!
1. e8=D! Kc5+ 2. Kc8! Dd5 3. De3+! Kd6 4. Db6+ Ke7 5. Db4+ Ke8 6. Kb8 De5 7. Kb7 Dd5+ 8. Kb6 De6+ 9. Ka7! Kd7 10. Db7! Da2+ 11. Kb8! Dh2 12. Dd5+ gewinnt, zum Beispiel Ke7 13. Dd4 Dg3 14. Dc5+ Ke8 15. Kb7 Dg7 16. Db5+ Kf8 17. Dd5 Db2+ 18. Kc6 Ke7 19. Dc5+ Kf7 20. c8=D
2. ... Dc3 3. Dg8
2. ... Kb6 3. De6+ Ka7 4. Db3,Dc4 Dg2 5. Da4+ Kb6 6. Dd4+ Kc6 7. Kb8 Dh2 8. Dc3+ Kb5 9. Db3+ Ka5 10. Db7 Ka4 11. Ka8
6. ... Ka6 7. Kd7 Dh3+ 8. Kd8 Kb7 9. Db4+
4. ... Ka6 5. Db7+ Ka5 6. Kb8 Df4 7. Ka8
6. Dg4+ Kc7! 5. Kf8 Dc5!
3. Kf8 Df3+! oder
2. ... Kf6 3. Dc6+,Da6+ Kg7!
1. e8=D! Kc5+ 2. Kc8! Dd5 3. De3+! Kd6 4. Db6+ Ke7 5. Db4+ Ke8 6. Kb8 De5 7. Kb7 Dd5+ 8. Kb6 De6+ 9. Ka7! Kd7 10. Db7! Da2+ 11. Kb8! Dh2 12. Dd5+ gewinnt, zum Beispiel Ke7 13. Dd4 Dg3 14. Dc5+ Ke8 15. Kb7 Dg7 16. Db5+ Kf8 17. Dd5 Db2+ 18. Kc6 Ke7 19. Dc5+ Kf7 20. c8=D
2. ... Dc3 3. Dg8
2. ... Kb6 3. De6+ Ka7 4. Db3,Dc4 Dg2 5. Da4+ Kb6 6. Dd4+ Kc6 7. Kb8 Dh2 8. Dc3+ Kb5 9. Db3+ Ka5 10. Db7 Ka4 11. Ka8
6. ... Ka6 7. Kd7 Dh3+ 8. Kd8 Kb7 9. Db4+
4. ... Ka6 5. Db7+ Ka5 6. Kb8 Df4 7. Ka8
Anton Baumann: 15.Ka7 führt etwas schneller zur 2.Dame:
15.Ka7 Dg7 16.Db5+ Kf8 17.Db8+ Kf7 18.c8=D +_ (2024-01-09)
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15.Ka7 Dg7 16.Db5+ Kf8 17.Db8+ Kf7 18.c8=D +_ (2024-01-09)
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Keywords: Symmetrical position, Asymmetrical solution, Minimal (d), Miniature, Promotion key, Promotion (D), Discovered check
Genre: Studies
FEN: 8/2PKP3/8/3k4/8/8/3q4/8
Input: Rainer Staudte, 2024-01-08
Last update: Rainer Staudte, 2024-01-12 more...
Genre: Studies
FEN: 8/2PKP3/8/3k4/8/8/3q4/8
Input: Rainer Staudte, 2024-01-08
Last update: Rainer Staudte, 2024-01-12 more...
1. Sd6 Kc6 2. Kf6 Kd5 3. Le4#
2. ... Kd7 3. La4#
2. ... Kd7 3. La4#
Keywords: Rex solus (s), Aristocrat, Miniature
Genre: 3#
FEN: 8/5N2/4N3/2Bk1K2/8/8/2B5/8
Input: Rainer Staudte, 2024-01-08
Last update: Gunter Jordan, 2024-01-08 more...
Genre: 3#
FEN: 8/5N2/4N3/2Bk1K2/8/8/2B5/8
Input: Rainer Staudte, 2024-01-08
Last update: Gunter Jordan, 2024-01-08 more...
24 - P1414395
Steven B. Dowd
Luis Echemendia
849 Sinfonie Scacchistiche 01-03/2024
(5+2)
#7
2 Lösungen
Steven B. Dowd
Luis Echemendia
849 Sinfonie Scacchistiche 01-03/2024
(5+2)
#7
2 Lösungen
1. Ld7 Kd5 2. Kd3 Kc5 3. Se3 Kb4 4. Kc2 Kxa5 5. Lc7+ Kb4 6. Ld6+ Ka5 7. Sc4#
4. ... Ka3 5. Ld6+ Ka2 6. Le6+ Ka1 7. Le5#
4. ... Kc5 5. Le5 Kb4 6. Ld6+ Kxa5 7. Sc4#
1. Sd4 Kd5 2. Lc2 Kc5 3. Ld1 Kd5 4. Lf3+ Kc5 5. Sb3+ Kb5 6. Ld6 Ka4 7. Lc6#
4. ... Ka3 5. Ld6+ Ka2 6. Le6+ Ka1 7. Le5#
4. ... Kc5 5. Le5 Kb4 6. Ld6+ Kxa5 7. Sc4#
1. Sd4 Kd5 2. Lc2 Kc5 3. Ld1 Kd5 4. Lf3+ Kc5 5. Sb3+ Kb5 6. Ld6 Ka4 7. Lc6#
25 - P1416005
Anatoly Stepochkin
473 Sinfonie Scacchistiche 2022
1. Preis
PR Daniele Gatti
(11+11)
s#16
Anatoly Stepochkin
473 Sinfonie Scacchistiche 2022
1. Preis
PR Daniele Gatti
(11+11)
s#16
1. Lg3! droht 2. Sc1+ Kc3 3. Tc2+ Lxc2#
1. ... Kc3 2. Le5+ Kb3 3. Lf4 Kc3 4. Ld2+ Kb3 5. Lh6 Kc3 6. Lxg7+ Kb3 7.
Lf8 Kc3 8. h8=D+ Kb3 9. g7 Kc3 10. g8=S+! Kb3 11. Sf6 Kc3 12. Se4+ Kb3 13. Dc3+! bxc3 14. Sd2+! cxd2 15. Sxc5+ Kc3 16. Tc2+ Lxc2#
1. ... Kc3 2. Le5+ Kb3 3. Lf4 Kc3 4. Ld2+ Kb3 5. Lh6 Kc3 6. Lxg7+ Kb3 7.
Lf8 Kc3 8. h8=D+ Kb3 9. g7 Kc3 10. g8=S+! Kb3 11. Sf6 Kc3 12. Se4+ Kb3 13. Dc3+! bxc3 14. Sd2+! cxd2 15. Sxc5+ Kc3 16. Tc2+ Lxc2#
Frank Richter: Angesichts Aufgaben wie der P1415726 oder P1391762 mit derselben schwarzen Matrix und ähnlicher Grundidee ist die hohe Auszeichnung zumindest verwunderlich. (2024-03-22)
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Keywords: Discovered check, Antiphönix, konsekutive Umwandlungen 2 (DS), Logical Problem, Switchback (k), Promotion (D), under-promotion (S)
Genre: s#
FEN: r7/2b2BpP/2Nn2P1/qpp4P/bpp3P1/1k1N4/R3P3/1K2B3
Input: Gunter Jordan, 2024-03-22
Last update: Gunter Jordan, 2024-03-22 more...
Genre: s#
FEN: r7/2b2BpP/2Nn2P1/qpp4P/bpp3P1/1k1N4/R3P3/1K2B3
Input: Gunter Jordan, 2024-03-22
Last update: Gunter Jordan, 2024-03-22 more...
1. ... Kh6 2. De7 Lg4 3. De5 Kg5 4. e3 Kh4 5. Ke4 Kh3 6. d5 Kxg2 7. d4 Lf3#
Yuri Bilokin: you can see 1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Rg5 Ke7 5.Sc2 Kd6 6.Sd4 Bd5#
1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Rg5 Ke7 5.Sc6+ Kd6 6.Sd4 Bd5#
1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Qh1 Ke7 5.Sc2 Kd6 6.Sd4 Bd5#
1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Qh1 Ke7 5.Sc6+ Kd6 6.Sd4 Bd5# (2024-04-02)
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1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Rg5 Ke7 5.Sc6+ Kd6 6.Sd4 Bd5#
1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Qh1 Ke7 5.Sc2 Kd6 6.Sd4 Bd5#
1.Be8 Kxg8 2.e3 Bf7+ 3.Ke4 Kf8 4.Qh1 Ke7 5.Sc6+ Kd6 6.Sd4 Bd5# (2024-04-02)
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Keywords: Unpinning, Liniensperrung, Minimal (L), Model mate, Check Protection, Selfblock
Genre: h#
FEN: 6r1/3p1bnK/8/3k1p1B/1n2pp1q/3p4/5pr1/8
Input: Gunter Jordan, 2024-03-30
Last update: Gunter Jordan, 2024-03-30 more...
Genre: h#
FEN: 6r1/3p1bnK/8/3k1p1B/1n2pp1q/3p4/5pr1/8
Input: Gunter Jordan, 2024-03-30
Last update: Gunter Jordan, 2024-03-30 more...
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