92 problem(s) found in 4175 milliseconds (displaying 92 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Figurenwanderungen' AND K='Forsberg-Zwilling'] [download as LaTeX]
1 - P0501066
Henry Olof Axel Forsberg
599-603 Revista Romana de Sah 01/1935
1. Preis
Pauly Gedenkturnier 1935
(3+2) C+
h#2
b) sTa6 statt sDa6
c) sLa6 statt sDa6
d) sSa6 statt sDa6
e) sBa6 statt sDa6
Henry Olof Axel Forsberg
599-603 Revista Romana de Sah 01/1935
1. Preis
Pauly Gedenkturnier 1935
(3+2) C+
h#2
b) sTa6 statt sDa6
c) sLa6 statt sDa6
d) sSa6 statt sDa6
e) sBa6 statt sDa6
a) 1. Df6 Sc5 2. Db2 Ta4#
b) 1. Tb6 Tb1 2. Tb3 Ta1#
c) 1. Lc4 Se1 2. La2 Sc2#
d) 1. Sc5 Sc1 2. Sa4 Tb3#
e) 1. a5 Tb3+ 2. Ka4 Sc5#
b) 1. Tb6 Tb1 2. Tb3 Ta1#
c) 1. Lc4 Se1 2. La2 Sc2#
d) 1. Sc5 Sc1 2. Sa4 Tb3#
e) 1. a5 Tb3+ 2. Ka4 Sc5#
Keywords: Forsberg Twins, Aristocrat, Model mate
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/q7/8/1R4K1/k2N4/8/8
Reprints: 6 The Chess Review , p. 25, 12/1945
141 Zwillinge und Mehrlinge 1952
Schach-Echo Vol.11, p. 151, 1953
5 The Problemist 01/1962
761 Szachy 06/1965
Problemschach [Sidler] , p. 140, 1968
Problem 127-132, p. 95, 09/1969
9) feenschach 26, p. 403, 12/1974
135 FIDE Album 1914-1944/III 1975
83 Schach ohne Partner [Grasemann] 1977
feenschach 47, p. 185, 07-09/1979
XII Rex Multiplex 2, p. 38, 04-06/1982
67 100 Classics of the Chessboard 1983
Belfort , p. 75, 1994
Tim Krabbé's Website (57) 2000
E-I Probleemblad 01-02/2000
harmonie 63 09/2000
König & Turm 4, p. 13, 03/2001
986 Minimalkunst im Schach 2006
Problemkiste 163 02/2006
633 Encyclopedia of Chess Problems 2012
Input: Gerd Wilts, 1996-06-06
Last update: Dieter Berlin, 2022-02-09 more...
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 8/8/q7/8/1R4K1/k2N4/8/8
Reprints: 6 The Chess Review , p. 25, 12/1945
141 Zwillinge und Mehrlinge 1952
Schach-Echo Vol.11, p. 151, 1953
5 The Problemist 01/1962
761 Szachy 06/1965
Problemschach [Sidler] , p. 140, 1968
Problem 127-132, p. 95, 09/1969
9) feenschach 26, p. 403, 12/1974
135 FIDE Album 1914-1944/III 1975
83 Schach ohne Partner [Grasemann] 1977
feenschach 47, p. 185, 07-09/1979
XII Rex Multiplex 2, p. 38, 04-06/1982
67 100 Classics of the Chessboard 1983
Belfort , p. 75, 1994
Tim Krabbé's Website (57) 2000
E-I Probleemblad 01-02/2000
harmonie 63 09/2000
König & Turm 4, p. 13, 03/2001
986 Minimalkunst im Schach 2006
Problemkiste 163 02/2006
633 Encyclopedia of Chess Problems 2012
Input: Gerd Wilts, 1996-06-06
Last update: Dieter Berlin, 2022-02-09 more...
2 - P0501243
Vladislav Bunka
2794 Sachova skladba 10/1991
(2+13) C+
h#1
b) wTh2 statt wDh2: h#2
c) wSh2 statt wDh2: h#3
d) wLh2 statt wDh2: h#4
e) wBh2 statt wDh2: h#5
Vladislav Bunka
2794 Sachova skladba 10/1991
(2+13) C+
h#1
b) wTh2 statt wDh2: h#2
c) wSh2 statt wDh2: h#3
d) wLh2 statt wDh2: h#4
e) wBh2 statt wDh2: h#5
a) 1. Te2 Dg1#
b) 1. Te2 Tg2 2. Sf2 Tg1#
c) 1. Kd1 Sf3 2. Kc1 Se1 3. Ld1 Sd3#
d) 1. Ke2 Lf4 2. Kd3 Lxg5 3. Kc3 Lxf6 4. d3 Lxe5#
e) 1. Kf2 h4 2. Kg3 h5 3. Kh4 h6 4. Kh5 h7 5. Kh6 h8=D#
b) 1. Te2 Tg2 2. Sf2 Tg1#
c) 1. Kd1 Sf3 2. Kc1 Se1 3. Ld1 Sd3#
d) 1. Ke2 Lf4 2. Kd3 Lxg5 3. Kc3 Lxf6 4. d3 Lxe5#
e) 1. Kf2 h4 2. Kg3 h5 3. Kh4 h6 4. Kh5 h7 5. Kh6 h8=D#
Keywords: Forsberg Twins, Excelsior (s), Promotion in the mating move, Minimal (D,T,L,S,B)
Genre: h#
Computer test: C+ Gustav 4.1d
FEN: 8/8/5pp1/1K2p1q1/3p2b1/1p6/2rp2rQ/1n2k2n
Input: Gerd Wilts, 1996-06-06
Last update: A.Buchanan, 2021-07-22 more...
Genre: h#
Computer test: C+ Gustav 4.1d
FEN: 8/8/5pp1/1K2p1q1/3p2b1/1p6/2rp2rQ/1n2k2n
Input: Gerd Wilts, 1996-06-06
Last update: A.Buchanan, 2021-07-22 more...
3 - P0501246
Vladislav Bunka
Vaclav Kotesovec
6326 feenschach 104 10/1992
(2+11)
h#3
b) wLg7 statt wTg7
c) wSg7 statt wTg7
Vladislav Bunka
Vaclav Kotesovec
6326 feenschach 104 10/1992
(2+11)
h#3
b) wLg7 statt wTg7
c) wSg7 statt wTg7
a) 1. Tg5 Tf7 2. e5 Ke7 3. Kf5 Txf6#
b) 1. Th5 Kxe7 2. Kg5 Ke6 3. Lf4 Lxf6#
c) 1. Kg5 Se8 2. Kh5 Kxe7 3. Tg5 Sxf6#
b) 1. Th5 Kxe7 2. Kg5 Ke6 3. Lf4 Lxf6#
c) 1. Kg5 Se8 2. Kh5 Kxe7 3. Tg5 Sxf6#
There was an error in position, corrected.
Henrik Juel: C+ Popeye 4.61 also (2023-04-14)
more ...
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Henrik Juel: C+ Popeye 4.61 also (2023-04-14)
more ...
comment
Keywords: Forsberg Twins, Minimal
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 1b1K4/4p1R1/1n3pbq/2r5/4pkpn/8/8/8
Input: Gerd Wilts, 1996-06-06
Last update: Vaclav Kotesovec, 2023-04-14 more...
Genre: h#
Computer test: Popeye C-Version 3.52 (2048 KB)
FEN: 1b1K4/4p1R1/1n3pbq/2r5/4pkpn/8/8/8
Input: Gerd Wilts, 1996-06-06
Last update: Vaclav Kotesovec, 2023-04-14 more...
a) 1. La3 Txa3[+sLf8] 2. Sxa3[+wTa1] Txd1[+sDd8]#
b) 1. Dxb3[+wTh1] Th7 2. Lxh7[+wTh1] Txg1#
"Interessantes Circe-Geschehen, thematisch aber schwer einzuordnen. Als Minimal aber sehr gefällig." (eb)
"Eine erfrischende Circe-Aufgabe" (HMo).
Der Autor merkt zu dem Stück an: "It shows a Circe-specific tempo idea, executed by both Black and White. Under Circe, a unit on its home square can make an 'absolutely pure' tempo move if it is then captured and reborn"
"very pretty" (LV).
HJä: "1.- Th7 und 1.La3 sind wirklich geistreiche Circe-Wartezüge. Sehr schönes Minimal."
16+3.5/5P
b) 1. Dxb3[+wTh1] Th7 2. Lxh7[+wTh1] Txg1#
"Interessantes Circe-Geschehen, thematisch aber schwer einzuordnen. Als Minimal aber sehr gefällig." (eb)
"Eine erfrischende Circe-Aufgabe" (HMo).
Der Autor merkt zu dem Stück an: "It shows a Circe-specific tempo idea, executed by both Black and White. Under Circe, a unit on its home square can make an 'absolutely pure' tempo move if it is then captured and reborn"
"very pretty" (LV).
HJä: "1.- Th7 und 1.La3 sind wirklich geistreiche Circe-Wartezüge. Sehr schönes Minimal."
16+3.5/5P
A.Buchanan: This is really wonderful. and I wonder if its thematic originality and apparent simplicity maybe denied it a higher prize. Note how three Black units, which all have other day jobs, block wK from executing the White waiting move. On the other hand bRg1 can’t do the black waiting move, again for check reasons (2021-06-24)
A.Buchanan: And why have the bRg1 anyway? Well, it prevents a large number of cooks in a, because otherwise wRd1 can't be captured as it will respawn on h1. On the other hand it prevents premature check in b, and the respawn on a1 *is* an issue. Harmonious asymmetry, in both cases requiring that b1 & d1 be cleared, and that all the pieces have multiple roles. (2021-06-24)
A.Buchanan: Where a theme appears both for white and black also can be more challenging than where the theme is echoed by the same player in the twin. The position needs to be fundamentally reperceived in such a twin, and to achieve great economy is even more laudable, imho. (2021-06-25)
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A.Buchanan: And why have the bRg1 anyway? Well, it prevents a large number of cooks in a, because otherwise wRd1 can't be captured as it will respawn on h1. On the other hand it prevents premature check in b, and the respawn on a1 *is* an issue. Harmonious asymmetry, in both cases requiring that b1 & d1 be cleared, and that all the pieces have multiple roles. (2021-06-24)
A.Buchanan: Where a theme appears both for white and black also can be more challenging than where the theme is echoed by the same player in the twin. The position needs to be fundamentally reperceived in such a twin, and to achieve great economy is even more laudable, imho. (2021-06-25)
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Keywords: Circe, Forsberg Twins, Minimal, Tempo Loss
Genre: Fairies, h#
Computer test: a)+b): C+, popeye 4.85
FEN: 5b1K/8/8/8/8/1R6/1p1pnpp1/1n1q1kr1
Reprints: (125) Parallel Strategy 2004
Input: Gerd Wilts, 2003-06-29
Last update: A.Buchanan, 2021-06-24 more...
Genre: Fairies, h#
Computer test: a)+b): C+, popeye 4.85
FEN: 5b1K/8/8/8/8/1R6/1p1pnpp1/1n1q1kr1
Reprints: (125) Parallel Strategy 2004
Input: Gerd Wilts, 2003-06-29
Last update: A.Buchanan, 2021-06-24 more...
5 - P1008810
Franz Pachl
10723 Die Schwalbe 182 04/2000
(9+9)
h#2
b) wDUf1 statt wSUf1
c) wLf1 statt wSUf1
wDU,sDU=Grashüpfer
wSU=Nachtreiter
Franz Pachl
10723 Die Schwalbe 182 04/2000
(9+9)
h#2
b) wDUf1 statt wSUf1
c) wLf1 statt wSUf1
wDU,sDU=Grashüpfer
wSU=Nachtreiter
a) 1. Lxe6 Ng3 2. Lc8 Lb6#
b) 1. Sxc5 Ga1 2. Sa6 Nb6#
c) 1. Txa4 Lh3 2. Txa7 Tb6#
MR, der übrigens mit 4/II-III wertete, beschreibt das dargestellte Thema: jedem der vier wThemasteine ist ein Nachbarfeld des sK zugeordnet, welches er ganz allein deckt. In jeder Phase wird jeweils eines dieser Felder durch einen sStein geblockt, der unterwegs zufällig jene Themafigur schlägt, deren Deckungsaufgabe der in Forsberg-Manier sein Kleid wechselnde Stein auf f1 übernimmt. Der Superschnittpunkt T/L/N/(G) ist mir bereits aus einem feenschach-Serienzüger von P.A. Petkov bekannt, der mit einem ähnlich komplexen Zyklus einen Preis errang. Ich wüßte keinen Grund, warum es diesem reichhaltigen Hilfsmatt anders ergehen sollte.
EB: Die vom Autor gewohnten Linienöffnungen mit Matt- und Opferwechsel, hier mit Märchenfiguren garniert.
b) 1. Sxc5 Ga1 2. Sa6 Nb6#
c) 1. Txa4 Lh3 2. Txa7 Tb6#
MR, der übrigens mit 4/II-III wertete, beschreibt das dargestellte Thema: jedem der vier wThemasteine ist ein Nachbarfeld des sK zugeordnet, welches er ganz allein deckt. In jeder Phase wird jeweils eines dieser Felder durch einen sStein geblockt, der unterwegs zufällig jene Themafigur schlägt, deren Deckungsaufgabe der in Forsberg-Manier sein Kleid wechselnde Stein auf f1 übernimmt. Der Superschnittpunkt T/L/N/(G) ist mir bereits aus einem feenschach-Serienzüger von P.A. Petkov bekannt, der mit einem ähnlich komplexen Zyklus einen Preis errang. Ich wüßte keinen Grund, warum es diesem reichhaltigen Hilfsmatt anders ergehen sollte.
EB: Die vom Autor gewohnten Linienöffnungen mit Matt- und Opferwechsel, hier mit Märchenfiguren garniert.
SCHRECKE: C+, popeye 4.85 (2020-07-24)
Anton Baumann: Informalturnier 2000: 2. Preis (PR: Jörg Kuhlmann) (2023-09-26)
comment
Anton Baumann: Informalturnier 2000: 2. Preis (PR: Jörg Kuhlmann) (2023-09-26)
comment
Keywords: Forsberg Twins, Capture key
Pieces: = Grasshopper (G), = Nightrider (N)
Genre: Fairies
FEN: n4Kb1/Pkq5/4Rb2/1*2QBP4/*2N1r2r2/1n6/4P3/1*2q3*2N2
Reprints: 7) Rochade Europa , p. 51, 04/2001
Input: Gerd Wilts, 2003-07-01
Last update: Alfred Pfeiffer, 2020-07-23 more...
Pieces: = Grasshopper (G), = Nightrider (N)
Genre: Fairies
FEN: n4Kb1/Pkq5/4Rb2/1*2QBP4/*2N1r2r2/1n6/4P3/1*2q3*2N2
Reprints: 7) Rochade Europa , p. 51, 04/2001
Input: Gerd Wilts, 2003-07-01
Last update: Alfred Pfeiffer, 2020-07-23 more...
6 - P1008884
Achim Schöneberg
10855 Die Schwalbe 184 08/2000
(4+9) C+
h#2
b) sDd4 = sSd4
Beamtenschach
Achim Schöneberg
10855 Die Schwalbe 184 08/2000
(4+9) C+
h#2
b) sDd4 = sSd4
Beamtenschach
a) 1. f2 Sf3+ 2. e3 Txe3#
b) 1. e3 Txe3 2. f2 Sf3#
(A. Schöneberg). Vertauschte s/w Zugpaare (JB). EB: Totaler Tausch der Zugfolge mit rein äußerlich identischem Matt, durch die "Beobachtungsweise" jedoch verschieden. Nicht leicht durchschaubar! Der komplette Tausch der beiden Zugpaare wird hier märchentypisch gut begründet (AB)! MW: Verwendet sehr schöne typische Eigenheiten des Beamtenschachs! Gefällt mir gut! Phantastisch, was AS aus der scheinbar spröden Stellung und der scheinbar langweiligen Bedingung macht (WW). HJ: Reziproker Wechsel der s/w Zugpaare - einfach aber gut!
b) 1. e3 Txe3 2. f2 Sf3#
(A. Schöneberg). Vertauschte s/w Zugpaare (JB). EB: Totaler Tausch der Zugfolge mit rein äußerlich identischem Matt, durch die "Beobachtungsweise" jedoch verschieden. Nicht leicht durchschaubar! Der komplette Tausch der beiden Zugpaare wird hier märchentypisch gut begründet (AB)! MW: Verwendet sehr schöne typische Eigenheiten des Beamtenschachs! Gefällt mir gut! Phantastisch, was AS aus der scheinbar spröden Stellung und der scheinbar langweiligen Bedingung macht (WW). HJ: Reziproker Wechsel der s/w Zugpaare - einfach aber gut!
Keywords: Functionary Chess, Forsberg Twins
Genre: Fairies, h#
Computer test: Popeye 4.61
FEN: 8/4K3/4p3/2bpkb2/3qpn2/5pN1/4R3/4N3
Input: Gerd Wilts, 2003-07-01
Last update: Arnold Beine, 2022-12-12 more...
Genre: Fairies, h#
Computer test: Popeye 4.61
FEN: 8/4K3/4p3/2bpkb2/3qpn2/5pN1/4R3/4N3
Input: Gerd Wilts, 2003-07-01
Last update: Arnold Beine, 2022-12-12 more...
7 - P1014777
Stepan P. Cirulik
2019 Westnik Problemista 31/12/1991
Preis
(3+4) C+
s#2
b) wL e6 nach wS e6
Stepan P. Cirulik
2019 Westnik Problemista 31/12/1991
Preis
(3+4) C+
s#2
b) wL e6 nach wS e6
a) 1. La2! b3 2. Da5 bxa2#
b) 1. Sd4! b3 2. Sc2+ bxc2#
Echomattwendung.
b) 1. Sd4! b3 2. Sc2+ bxc2#
Echomattwendung.
Keywords: Forsberg Twins, Miniature
Genre: s#
FEN: Q7/8/4B3/8/bp6/k7/1p6/1K6
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2023-10-23 more...
Genre: s#
FEN: Q7/8/4B3/8/bp6/k7/1p6/1K6
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Marcin Banaszek, 2023-10-23 more...
8 - P1014779
Valery Surkov
3696 Problemist Pribuzhya 25/12/1993
Lob
Turnier des Schachklubs Mykolajiw
(4+3) C+
s#2
b) wSf4
Valery Surkov
3696 Problemist Pribuzhya 25/12/1993
Lob
Turnier des Schachklubs Mykolajiw
(4+3) C+
s#2
b) wSf4
a) 1. Lh6+! Txh6 2. Df7+ Sxf7#
b) 1. Sg6+! Txg6 2. Dg8+ Txg8#
b) 1. Sg6+! Txg6 2. Dg8+ Txg8#
Keywords: Forsberg Twins, Aristocrat, Miniature
Genre: s#
FEN: 5k1K/7R/3nQr2/8/5B2/8/8/8
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
Genre: s#
FEN: 5k1K/7R/3nQr2/8/5B2/8/8/8
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
9 - P1014780
Valery Surkov
3714 Problemist Pribuzhya 25/12/1993
1. ehrende Erwähnung
Turnier des Schachklubs Mykolajiw
(3+4) C+
s#2
b) wLc6
c) wTc6
Valery Surkov
3714 Problemist Pribuzhya 25/12/1993
1. ehrende Erwähnung
Turnier des Schachklubs Mykolajiw
(3+4) C+
s#2
b) wLc6
c) wTc6
a) 1. Sd8? Sg6!
1. Se7? Sf7!
1. Se5! Sg6 2. Sxg6 b2#
1. ... Sf7 2. Sxf7 b2#
b) 1. Ld5? Sg6!
1. Le4? Sf7!
1. Le8! Sg6 2. Lxg6 b2#
1. ... Sf7 2. Lxf7 b2#
c) 1. Tc7? Sg6!
1. Tf6! Sg6 2. Txg6 b2#
1. ... Sf7 2. Txf7 b2#
a) Vgl. Nr. , ref{1111}.
c) Vgl. Nr. , ref{1112}.
1. Se7? Sf7!
1. Se5! Sg6 2. Sxg6 b2#
1. ... Sf7 2. Sxf7 b2#
b) 1. Ld5? Sg6!
1. Le4? Sf7!
1. Le8! Sg6 2. Lxg6 b2#
1. ... Sf7 2. Lxf7 b2#
c) 1. Tc7? Sg6!
1. Tf6! Sg6 2. Txg6 b2#
1. ... Sf7 2. Txf7 b2#
a) Vgl. Nr. , ref{1111}.
c) Vgl. Nr. , ref{1112}.
Keywords: Forsberg Twins, Miniature
Genre: s#
FEN: 7n/8/2N5/8/3R4/kp6/p7/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
Genre: s#
FEN: 7n/8/2N5/8/3R4/kp6/p7/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
10 - P1014781
Valery Surkov
3718 Problemist Pribuzhya 25/12/1993
2. Lob
Turnier des Schachklubs Mykolajiw
(4+3)
s#2
b) wSb2
Valery Surkov
3718 Problemist Pribuzhya 25/12/1993
2. Lob
Turnier des Schachklubs Mykolajiw
(4+3)
s#2
b) wSb2
a) 1. Tb1 L beliebig 2. Db5+ cxb5#
b) 1. Sc4 L beliebig 2. Dxc6+ Lxc6#
Im Original stand "b) wSc4", was aber sicherlich "b) wSb2" heißen sollte.
b) 1. Sc4 L beliebig 2. Dxc6+ Lxc6#
Im Original stand "b) wSc4", was aber sicherlich "b) wSb2" heißen sollte.
Keywords: Forsberg Twins, Miniature
Genre: s#
FEN: KB6/8/k1p5/2Q5/8/8/1R6/7b
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
Genre: s#
FEN: KB6/8/k1p5/2Q5/8/8/1R6/7b
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Rainer Staudte, 2023-10-28 more...
a) 1. Db6 Kc2 2. Db2+ axb2#
b) 1. Df2 Kb3 2. Db2+ axb2#
b) 1. Df2 Kb3 2. Db2+ axb2#
Keywords: Forsberg Twins
Genre: s#
FEN: 8/8/5Q2/8/3R4/p1k5/P7/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
Genre: s#
FEN: 8/8/5Q2/8/3R4/p1k5/P7/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
a) 1. Tb1 Kd3 2. Td1+ Kc2 3. Sb2 cxb2#
b) 1. De1 Kd3 2. Se5+ Kc2 3. Tb2+ cxb2#
Opfer- und Deckungswechsel zwischen Springer und Turm.
b) 1. De1 Kd3 2. Se5+ Kc2 3. Tb2+ cxb2#
Opfer- und Deckungswechsel zwischen Springer und Turm.
Keywords: Forsberg Twins
Genre: s#
FEN: 8/8/8/4R3/1RN5/2p5/B1k5/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
Genre: s#
FEN: 8/8/8/4R3/1RN5/2p5/B1k5/K7
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
a) 1. Se4 Kd1 2. Sf2+ Kc2 3. De1 b2#
b) 1. Lb4 Kd1 2. De1+ Kc2 3. Df1 b2#
Rückkehr des schwarzen Königs.
b) 1. Lb4 Kd1 2. De1+ Kc2 3. Df1 b2#
Rückkehr des schwarzen Königs.
Keywords: Forsberg Twins
Genre: s#
FEN: 8/8/3N4/8/8/1p2Q3/p1k5/Kb6
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
Genre: s#
FEN: 8/8/3N4/8/8/1p2Q3/p1k5/Kb6
Input: Selbstmatt-Miniaturen/Reflexmatt-Miniaturen, 2004-05-01
Last update: Olaf Jenkner, 2012-08-26 more...
a) 1. b4 Kd5? 2. g8=L+ Kd4 3. Dc8 Dxf6#
1. b4 Dxf6 2. Sc6+ Dxc6 3. c3+ Dxc3 4. Dxb6+ Dc5 5. Df6+ De5 6. g8=L Dxf6#
b) 1. Dc3+ Kd5 2. g8=D+ Kd6 3. Dd8+ Ke6 4. Dcc8+ Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
a) ist die Originalaufgabe von JH, b) wurde von FF gefunden und in der Lösungsbesprechung 03/1991, Seite 42, angefügt.
Cook: b) Dual 4. Dh3+ Lf5 5. Dd7+ Kxf6 6. Df7+ Kxf7#
4. ... Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
1. b4 Dxf6 2. Sc6+ Dxc6 3. c3+ Dxc3 4. Dxb6+ Dc5 5. Df6+ De5 6. g8=L Dxf6#
b) 1. Dc3+ Kd5 2. g8=D+ Kd6 3. Dd8+ Ke6 4. Dcc8+ Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
a) ist die Originalaufgabe von JH, b) wurde von FF gefunden und in der Lösungsbesprechung 03/1991, Seite 42, angefügt.
Cook: b) Dual 4. Dh3+ Lf5 5. Dd7+ Kxf6 6. Df7+ Kxf7#
4. ... Kf7 5. Le8+ Kf8 6. Lg7+ Lxg7#
SCHRECKE: b) hat einen Dual:
4.Dh3+ Lf5 5.Dd7+ K:f6 6.Df7+ K:f7#
4. ... Kf7 5.Le8+ Kf8 6.Lg7+ L:g7# (2021-03-23)
comment
4.Dh3+ Lf5 5.Dd7+ K:f6 6.Df7+ K:f7#
4. ... Kf7 5.Le8+ Kf8 6.Lg7+ L:g7# (2021-03-23)
comment
Keywords: Forsberg Twins, Pure Round Trip (d)
Genre: s#
FEN: 1N5K/2Q3P1/1p3B2/1B2q2R/3kb2R/1P6/2PP4/8
Input: Frank Müller, 2010-04-29
Last update: Rainer Staudte, 2023-07-24 more...
Genre: s#
FEN: 1N5K/2Q3P1/1p3B2/1B2q2R/3kb2R/1P6/2PP4/8
Input: Frank Müller, 2010-04-29
Last update: Rainer Staudte, 2023-07-24 more...
a) 1. Sc8 Ka4 2. Ka2 Ka5 3. b4+ Ka4 4. Sb6#;
b) 1. Lb8 Ka4 2. Ka2 Ka5 3. Lc7+ Ka4 4. b3#
b) 1. Lb8 Ka4 2. Ka2 Ka5 3. Lc7+ Ka4 4. b3#
Keywords: Miniature Collection (0347446), Forsberg Twins, Miniature
Genre: n#
FEN: 8/N7/8/8/8/Pk1B4/1P6/K7
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
Genre: n#
FEN: 8/N7/8/8/8/Pk1B4/1P6/K7
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
16 - P1116143
Sergii I. Tkachenko
121 Intellektualnyje Igry 6 1992
Spezialpreis
(5+1)
#2
b) wTa6; c) wLa6; d) wSa6
Sergii I. Tkachenko
121 Intellektualnyje Igry 6 1992
Spezialpreis
(5+1)
#2
b) wTa6; c) wLa6; d) wSa6
a) 1. a7! (Zugzwang) ... Ka5 2. a8D;
b) 1. Tab6! ... Ka5 2. Ta3;
c) 1. Lc5! ... Ka5 2. Ta3;
d) 1. Sc5+! ... Ka5 2. Le1
b) 1. Tab6! ... Ka5 2. Ta3;
c) 1. Lc5! ... Ka5 2. Ta3;
d) 1. Sc5+! ... Ka5 2. Le1
FP-4
vf: Sergei I. Tkatschenko, 04.1993, Smena (Moskwa), (nur a)?)
Henrik Juel: C+ Popeye 4.61 (2022-08-06)
comment
vf: Sergei I. Tkatschenko, 04.1993, Smena (Moskwa), (nur a)?)
Henrik Juel: C+ Popeye 4.61 (2022-08-06)
comment
Keywords: Miniature Collection (0193016), Forsberg Twins
Genre: 2#
FEN: 8/8/P7/P7/k7/1R6/K4B2/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/8/P7/P7/k7/1R6/K4B2/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. e8=L;
b) 1. e8=S
b) 1. e8=S
Keywords: Miniature Collection (0311038), Forsberg Twins
Genre: 2#
FEN: kn5R/p3P3/P7/8/8/K7/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2023-03-30 more...
Genre: 2#
FEN: kn5R/p3P3/P7/8/8/K7/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2023-03-30 more...
18 - P1120263
Aleksandr Oleynik
Problemist Pribuzhya 27/10/1999
Marandjuk-50 10. Lob
(4+2)
#4
b) wSc8
Aleksandr Oleynik
Problemist Pribuzhya 27/10/1999
Marandjuk-50 10. Lob
(4+2)
#4
b) wSc8
a) 1. Kb8 Kd6 2. d8=D+ Ke5 3. Dh4 Kd6 4. Df6#;
b) 1. d8=T
b) 1. d8=T
BUT4 FP SO-K-T m
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. d8T Kc7 2. Td6 Kxc8 3. Kb6 Kb8 4. Td8# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. d8T Kc7 2. Td6 Kxc8 3. Kb6 Kb8 4. Td8# (2022-08-07)
comment
Keywords: Miniature Collection (0347535), Forsberg Twins, Minimal (b)
Genre: n#
FEN: 2B5/K2P4/2k5/2p5/2P5/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-08-08 more...
Genre: n#
FEN: 2B5/K2P4/2k5/2p5/2P5/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Gunter Jordan, 2022-08-08 more...
a) 1. La3? (2. Db4) ... a5 2. Tb1, ... c5!;
1. Lc3? ... c5 2. Tb1, ... a5!;
1. Tc1? ... a5/Ka5 2. Dc4/Tc5, ... c5!;
1. Tb1! (Zugzwang) ... a5/c5 2. La3/Lc3, ... Ka5/Kc5 2. Lc3/La3;
b) 1. b3! ... a5/c5 2. Dc4/Da4, ... Ka5/Kc5 2. Da4/Dc4
1. Lc3? ... c5 2. Tb1, ... a5!;
1. Tc1? ... a5/Ka5 2. Dc4/Tc5, ... c5!;
1. Tb1! (Zugzwang) ... a5/c5 2. La3/Lc3, ... Ka5/Kc5 2. Lc3/La3;
b) 1. b3! ... a5/c5 2. Dc4/Da4, ... Ka5/Kc5 2. Da4/Dc4
Keywords: Miniature Collection (0244845), Forsberg Twins
Genre: 2#
FEN: 8/K7/p1p5/1k6/4Q3/8/1B6/3R4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/K7/p1p5/1k6/4Q3/8/1B6/3R4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Lf5 Kd4 2. Ld3 Kd5 3. Lc4+ Kd4 4. e3#;
b) 1. d8S Kd4 2. Se6+ Kd5 3. Sf4+ Kd4 4. e3#
b) 1. d8S Kd4 2. Se6+ Kd5 3. Sf4+ Kd4 4. e3#
BsL2 BsS2 BUS4 FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. d8S! Kd4 2. Se6+ Kd5 3. Sf4+ Kd4 4. e3# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. d8S! Kd4 2. Se6+ Kd5 3. Sf4+ Kd4 4. e3# (2022-08-07)
comment
Keywords: Miniature Collection (0328233), Forsberg Twins, Miniature
Genre: n#
FEN: 8/3B1N2/8/1K1k4/8/5P2/3PP3/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
Genre: n#
FEN: 8/3B1N2/8/1K1k4/8/5P2/3PP3/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
a) 1. c7? ... Le5!
1. Kc4! droht 2. Dd5#
1. ... Le5 2. Dd7#
b) 1. Kc4? ... Td8!
1. c7! droht 2. c8=S#
1. ... Td8 2. cxd8=D#
1. Kc4! droht 2. Dd5#
1. ... Le5 2. Dd7#
b) 1. Kc4? ... Td8!
1. c7! droht 2. c8=S#
1. ... Td8 2. cxd8=D#
Keywords: Miniature Collection (0008661), Forsberg Twins, Miniature
Genre: 2#
FEN: 3B3b/8/2Pk4/1K3Q1p/8/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2021-05-03 more...
Genre: 2#
FEN: 3B3b/8/2Pk4/1K3Q1p/8/8/8/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2021-05-03 more...
22 - P1126118
Leonid A. Lebedew
Babruiskae zhhyzze 20/11/1998
(3+4)
#3
b) wLg1->d1; c) wLg1->h3; d) wSg1
Leonid A. Lebedew
Babruiskae zhhyzze 20/11/1998
(3+4)
#3
b) wLg1->d1; c) wLg1->h3; d) wSg1
a) 1. Lf2;
b) 1. Lf3;
c) 1. Le6;
d) 1. Sf3
b) 1. Lf3;
c) 1. Le6;
d) 1. Sf3
FP m03 A10-23- Echos
Henrik Juel: C+ Popeye 4.61 (2022-02-20)
Henrik Juel: The animation may work if captures are indicated in b) and d): Lxf3 and Sxf3 (2022-02-20)
comment
Henrik Juel: C+ Popeye 4.61 (2022-02-20)
Henrik Juel: The animation may work if captures are indicated in b) and d): Lxf3 and Sxf3 (2022-02-20)
comment
Keywords: Miniature Collection (0346759), Forsberg Twins
Genre: 3#
FEN: 5k2/5p2/1p3Q2/1K6/8/5p2/8/6B1
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 3#
FEN: 5k2/5p2/1p3Q2/1K6/8/5p2/8/6B1
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. e7 Kb4 2. e8=D Kc4 3. De4#;
b) 1. e7! Kb4 2. e8=T Ka4 3. Te4#
b) 1. e7! Kb4 2. e8=T Ka4 3. Te4#
Keywords: Miniature Collection (0327763), Forsberg Twins, Kindergarten Problem, Miniature
Genre: 3#
FEN: 8/8/1K2P3/8/k7/8/PP6/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
Genre: 3#
FEN: 8/8/1K2P3/8/k7/8/PP6/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
a) 1. Kb5 Kc7 2. Te6 Kb8 3. Kb6 Kc8 4. Te8#;
b) 1. Sd4
b) 1. Sd4
TX5 FP A12TT1 RU-KT mm
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Sd4! Kd5 2. Sb5 Kc4 3. Td8 Kb4 4. Td4#
1. ... Kd7 2. Te6 Kc8 3. Td6 Kb8 4. Td8#
2. ... Kd8 3. Kc6 Kc8 4. Te8# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Sd4! Kd5 2. Sb5 Kc4 3. Td8 Kb4 4. Td4#
1. ... Kd7 2. Te6 Kc8 3. Td6 Kb8 4. Td8#
2. ... Kd8 3. Kc6 Kc8 4. Te8# (2022-08-07)
comment
Keywords: Miniature Collection (0326924), Forsberg Twins
Genre: n#
FEN: 4R3/8/1KBk4/8/8/8/P7/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 4R3/8/1KBk4/8/8/8/P7/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Le1
b) 1. Se4
b) 1. Se4
A9-1S- FP Bc2 MW
SCHRECKE: a)+b): C+, popeye 4.87
a) 1. Le1! (Zugzwang)
1. ... Kc2 2. Sd4#
1. ... Kc4 2. Da2#
1. ... c2 2. Sa5#
b) 1. Se4! (Zugzwang)
1. ... Kc2 2. Sd4#
1. ... Kc4 2. Da2#
1. ... c2 2. Sd2# (2023-05-22)
comment
SCHRECKE: a)+b): C+, popeye 4.87
a) 1. Le1! (Zugzwang)
1. ... Kc2 2. Sd4#
1. ... Kc4 2. Da2#
1. ... c2 2. Sa5#
b) 1. Se4! (Zugzwang)
1. ... Kc2 2. Sd4#
1. ... Kc4 2. Da2#
1. ... c2 2. Sd2# (2023-05-22)
comment
Keywords: Miniature Collection (0317215), Forsberg Twins, Minimal, Miniature
Genre: 2#
FEN: 8/8/1KN5/8/8/1kp5/4PB2/Q7
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2023-05-22 more...
Genre: 2#
FEN: 8/8/1KN5/8/8/1kp5/4PB2/Q7
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2023-05-22 more...
a) 1. Sc3 b3 2. Sa2 bxa2 3. b4#;
b) 1. Ld1
b) 1. Ld1
Keywords: Miniature Collection (0343357), Forsberg Twins
Genre: 3#
FEN: 8/8/1p6/kB6/NpK5/8/1P6/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 3#
FEN: 8/8/1p6/kB6/NpK5/8/1P6/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Td3? ... Df6!;
1. Td2! (2. Lb2) ... Dc3+/Dd4+/De5+/Df6 2. Lc3/Ld4/Le5/Sb3;
b) 1. Td4! ... Sa4+/Sd3+/Sd1/Sc4 2. Ta4/Td3/Td1/Tc4
1. Td2! (2. Lb2) ... Dc3+/Dd4+/De5+/Df6 2. Lc3/Ld4/Le5/Sb3;
b) 1. Td4! ... Sa4+/Sd3+/Sd1/Sc4 2. Ta4/Td3/Td1/Tc4
Keywords: Miniature Collection (0266437), Forsberg Twins
Genre: 2#
FEN: 8/8/5B2/2K5/8/8/Bq6/k1NR4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/8/5B2/2K5/8/8/Bq6/k1NR4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Tf3 Ke5 2. e3 Ke6 3. Tf7 Ke5 4. Kd7 Kd5 5. Tf5#;
b) 1. Sc4! Ke4 2. Tf3 Kd4 3. Kd6 Ke4 4. Sd2+ Kd4 5. Td3#
b) 1. Sc4! Ke4 2. Tf3 Kd4 3. Kd6 Ke4 4. Sd2+ Kd4 5. Td3#
T12K T22S FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Sc4! Ke4 2. Tf3 Kd4 3. Kd6 Ke4 4. Sd2+ Kd4 5. Td3# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Sc4! Ke4 2. Tf3 Kd4 3. Kd6 Ke4 4. Sd2+ Kd4 5. Td3# (2022-08-07)
comment
Keywords: Miniature Collection (0330420), Forsberg Twins, Miniature
Genre: n#
FEN: 8/8/2KN4/8/3k4/6R1/4P3/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
Genre: n#
FEN: 8/8/2KN4/8/3k4/6R1/4P3/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Arnold Beine, 2022-08-07 more...
a) 1. Db1 Ka5,Ka7 2. Db5,Db7#
b) 1. Txf6 Ka5,Ka7 2. Tf4,Tf8 Ka6 3. Ta4,Ta8#
b) 1. Txf6 Ka5,Ka7 2. Tf4,Tf8 Ka6 3. Ta4,Ta8#
Keywords: Miniature Collection (0315796), Forsberg Twins
Genre: 2#, 3#
FEN: 8/8/k1K2pQ1/8/8/8/P7/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#, 3#
FEN: 8/8/k1K2pQ1/8/8/8/P7/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Se7! Kc4 2. Kc2 Kb4 3. Sc6+ Kc4 4. b3#
b) 1. Lc6! Kc4 2. Kc2 Kb4 3. Sd5+ Ka5 4. b4+ Ka6 5. Sc7#
b) 1. Lc6! Kc4 2. Kc2 Kb4 3. Sd5+ Ka5 4. b4+ Ka6 5. Sc7#
Keywords: Miniature Collection (0074582), Forsberg Twins, Miniature, Rex solus
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 8/8/8/3N4/8/2NkB3/1P3P2/3K4
Reprints: 49 Problemschach-Jahrbuch 1995 D , p. 28, 1996
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-06-30 more...
Genre: n#
Computer test: Juel: Popeye 4.61
FEN: 8/8/8/3N4/8/2NkB3/1P3P2/3K4
Reprints: 49 Problemschach-Jahrbuch 1995 D , p. 28, 1996
Input: Felber, Volker, 2010-09-11
Last update: Dieter Berlin, 2023-06-30 more...
a) 1. Sc2 Kg1 2. Ke1 Kh1 3. Sxd4 Kg1 4. Sf3+ Kh1 5. Th2#;
1. Te2
1. Te2
A12TT1 SYL FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Te2! Kg1 2. Kd2 Kf1,Kh1 3. Ke3 Kg1 4. Sf3+ Kf1 5. Tf2#
4. ... Kh1 5. Th2# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Te2! Kg1 2. Kd2 Kf1,Kh1 3. Ke3 Kg1 4. Sf3+ Kf1 5. Tf2#
4. ... Kh1 5. Th2# (2022-08-07)
comment
Keywords: Miniature Collection (0347440), Forsberg Twins
Genre: n#
FEN: 8/8/8/8/3p4/3P4/3R4/3KNk2
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/8/8/8/3p4/3P4/3R4/3KNk2
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Ta8 Kc4 2. Ta3 d3 3. Tea5 Kd4 4. T3a4#;
b) 1. ?
b) 1. ?
FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Td8! Kc4 2. Kc2 Kb4 3. Txd4+ Ka3 4. Ta5#
2. ... d3+ 3. Kb2 Kb4 4. Td4# (2022-08-07)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Td8! Kc4 2. Kc2 Kb4 3. Txd4+ Ka3 4. Ta5#
2. ... d3+ 3. Kb2 Kb4 4. Td4# (2022-08-07)
comment
Keywords: Miniature Collection (0340440), Forsberg Twins
Genre: n#
FEN: 2R5/8/8/4RP2/3p4/3k4/3B4/3K4
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 2R5/8/8/4RP2/3p4/3k4/3B4/3K4
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
33 - P1140848
Werner Speckmann
VII Deutsche Schachzeitung , p. 109, 03/1967
(4+1) C+
#2
b) wBa2, wBg2
Werner Speckmann
VII Deutsche Schachzeitung , p. 109, 03/1967
(4+1) C+
#2
b) wBa2, wBg2
a) 1. Se3+;
b) 1. Dd4
b) 1. Dd4
Q21+ ASd2 FP
Neufassung zu Wochenpost 1957 [P1159930, P1159931]
Henrik Juel: C+ Popeye 4.61 (2020-12-17)
comment
Neufassung zu Wochenpost 1957 [P1159930, P1159931]
Henrik Juel: C+ Popeye 4.61 (2020-12-17)
comment
Keywords: Miniature Collection (0015947), Forsberg Twins
Genre: 2#
Computer test: Henrik Juel (2020-12-17): C+ Popeye 4.61
FEN: 3Q4/8/8/8/8/3K4/N5N1/3k4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
Computer test: Henrik Juel (2020-12-17): C+ Popeye 4.61
FEN: 3Q4/8/8/8/8/3K4/N5N1/3k4
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Tc3! Ke4 2. Kc5 Ke5 3. Te3#
b) 1. a4! Kc4 2. Ke5 Kc5 3. Tc3#
c) 1. Sc1! Kc4 2. Tb3 Kd4 3. Tb4#
b) 1. a4! Kc4 2. Ke5 Kc5 3. Tc3#
c) 1. Sc1! Kc4 2. Tb3 Kd4 3. Tb4#
Keywords: Model mate, Forsberg Twins
Genre: 3#
FEN: 8/8/3K4/3N4/3k2P1/4R3/8/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 3#
FEN: 8/8/3K4/3N4/3k2P1/4R3/8/8
Input: Felber, Volker, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. La5! Ka7 2. Kc7 Ka8 3. Lb7+ Ka7 4. Lb6#
1. ... Ka8 2. Kc7 Ka7 3. Lb6+ Ka8 4. Lb7#
b) 1. Kxd7! Ka7 2. Kc7 Ka8 3. Lb7+ Ka7 4. Sc6#
1. ... Ka8 2. Kc7 Ka7 3. Sc6+ Ka8 4. Lb7#
c) 1. b5! Ka7 2. Kc7 Ka8 3. Lb7+ Ka7 4. b6#
1. ... Ka8 2. Kc7 Ka7 3. b6+ Ka8 4. Lb7#
1. ... Ka8 2. Kc7 Ka7 3. Lb6+ Ka8 4. Lb7#
b) 1. Kxd7! Ka7 2. Kc7 Ka8 3. Lb7+ Ka7 4. Sc6#
1. ... Ka8 2. Kc7 Ka7 3. Sc6+ Ka8 4. Lb7#
c) 1. b5! Ka7 2. Kc7 Ka8 3. Lb7+ Ka7 4. b6#
1. ... Ka8 2. Kc7 Ka7 3. b6+ Ka8 4. Lb7#
Keywords: Miniature Collection (0346906), Forsberg Twins
Genre: n#
FEN: 1kBK4/3p4/3P4/2P5/1B6/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 1kBK4/3p4/3P4/2P5/1B6/8/8/8
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Df3+ Tc3 2. Db7+ Sb5 (2... Kc2 3. Ta2+ Kc1 4. Db2#) 3. Dxb5+ Kc2 4. Db1#
HB FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Dd3+! Tc3 2. Db5+ Lb4! 3. Da4+ Kb2 4. Da2# (2022-08-08)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Dd3+! Tc3 2. Db5+ Lb4! 3. Da4+ Kb2 4. Da2# (2022-08-08)
comment
Keywords: Miniature Collection (0348126), Forsberg Twins
Genre: n#
FEN: 8/8/8/8/8/nk6/2r5/R2QKB2
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/8/8/8/8/nk6/2r5/R2QKB2
Input: Zuncke/Bruder, 2010-09-11
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Se5 Kd6 (1... Kf6 2. Le3 Ke6 3. Lg5 Kd6 4. Tc6#) 2. Tg7 Ke6 3. Lc5 Kf6 4. Tg6#;
b) 1. Le8
b) 1. Le8
IM FP e133 e128
SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force
b) 1.Le8! Kd6 2.Tg7 Ke6 3.Lc5 Kf6 4.Tg6#, 1. ... Kf6 2.Le3 Ke6 3.Lg5 Kd6 4.Tc6# (2021-01-01)
comment
SCHRECKE: a)+b): C+, Gustav 4.1d, Brute Force
b) 1.Le8! Kd6 2.Tg7 Ke6 3.Lc5 Kf6 4.Tg6#, 1. ... Kf6 2.Le3 Ke6 3.Lg5 Kd6 4.Tc6# (2021-01-01)
comment
Keywords: Miniature Collection (0328141), Forsberg Twins
Genre: n#
FEN: 8/2R5/2N1k3/8/4K3/8/8/6B1
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/2R5/2N1k3/8/4K3/8/8/6B1
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Keywords: Miniature Collection (0292480), Minimal, Miniature, Forsberg Twins
Genre: 2#
FEN: 8/8/4p3/4K3/5QNk/8/2B1P3/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/8/4p3/4K3/5QNk/8/2B1P3/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Keywords: Miniature Collection (0292481), Minimal, Miniature, Forsberg Twins
Genre: 2#
FEN: 8/8/4p3/4K3/5QNk/8/2R1P3/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/8/4p3/4K3/5QNk/8/2R1P3/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Dxd4+ Ke2 2. Sh2 Ke1 3. Te4#;
b) 1. De4
b) 1. De4
Keywords: Miniature Collection (0341205), Forsberg Twins
Genre: 3#
FEN: 8/8/4K3/3Q4/3p1R2/4kN2/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 3#
FEN: 8/8/4K3/3Q4/3p1R2/4kN2/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
41 - P1154022
Viktor Chepizhny
361 Schachmatnyje Sadatschi-Miniatjury [Tischkow, Tschepishny] , p. 104, 1987
(4+2)
#2
b) wLg4
Viktor Chepizhny
361 Schachmatnyje Sadatschi-Miniatjury [Tischkow, Tschepishny] , p. 104, 1987
(4+2)
#2
b) wLg4
a) 1. Th4! droht 2. Th8#
1. ... Sh7 2. gxh7#
1. ... Sf7 2. gxf7#
b) 1. Lf5! Sh3,Sf3,Se4,Se6 2. Le6#
1. ... Sh7 2. Le6#
1. ... Sf7 2. gxf7#
1. ... Sh7 2. gxh7#
1. ... Sf7 2. gxf7#
b) 1. Lf5! Sh3,Sf3,Se4,Se6 2. Le6#
1. ... Sh7 2. Le6#
1. ... Sf7 2. gxf7#
Keywords: Miniature Collection (0022302), Forsberg Twins
Genre: 2#
FEN: 4K1k1/8/6P1/6n1/3B2R1/8/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 4K1k1/8/6P1/6n1/3B2R1/8/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Lf1 Kh5 2. Kf5 Kh4 3. Lh6 Kh5 4. Lf4 Kh4 5. Lg5+ Kh5 6. Le2#;
b) 1. Sg1
b) 1. Sg1
A18e FP
SCHRECKE: b) 1. Sg1! Kh5 2. Kf5 Kh4 3. Kg6 Kg4 4. Lb4 Kh4 5. Le1 Kg4 6. f3# (2023-01-03)
comment
SCHRECKE: b) 1. Sg1! Kh5 2. Kf5 Kh4 3. Kg6 Kg4 4. Lb4 Kh4 5. Le1 Kg4 6. f3# (2023-01-03)
comment
Keywords: Miniature Collection (0336924), Forsberg Twins
Genre: n#
Computer test: Gustav 3.2r.
FEN: 5B2/8/8/4P3/5K1k/4P3/4BP2/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
Computer test: Gustav 3.2r.
FEN: 5B2/8/8/4P3/5K1k/4P3/4BP2/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. La3 Kc4 2. Lc2 Kd4 3. Ta4+ Kd5 4. Le4#
L12T FP m
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Tb5! Ka3 2. Lc2 Ka2 3. Sc4 Ka1 4. Ta5#
1. ... Ka4 2. Lc2+ Ka3 3. Sc4+ Ka2 4. Ta5# (2022-08-08)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Tb5! Ka3 2. Lc2 Ka2 3. Sc4 Ka1 4. Ta5#
1. ... Ka4 2. Lc2+ Ka3 3. Sc4+ Ka2 4. Ta5# (2022-08-08)
comment
Keywords: Miniature Collection (0349228), Forsberg Twins
Genre: n#
FEN: 8/5p2/3B1K2/R4B2/8/1k6/3P4/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/5p2/3B1K2/R4B2/8/1k6/3P4/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Kf5 Kxd3 2. Dc1 Kd4 (2... Ke2 3. Db1 Kf3 4. Df1#) 3. Dc3+ Kd5 4. Dc5#;
b) 1. Da1
b) 1. Da1
Q12- FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Da1! Kc5 2. Da5+ Kd6! 3. Da7 e2 4. De7# (2022-08-08)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Da1! Kc5 2. Da5+ Kd6! 3. Da7 e2 4. De7# (2022-08-08)
comment
Keywords: Miniature Collection (0202572), Forsberg Twins
Genre: n#
FEN: 8/8/5K2/8/3kN3/3Pp3/8/6Q1
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/8/5K2/8/3kN3/3Pp3/8/6Q1
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
45 - P1163345
Vladislav Bunka
20 Die Schwalbe 150, p. 576, 12/1994
Kompositionsturnier zum 50. Geb.
von H.-P. Rehm
Lob o. R.
(4+3)
#6
b) wSa6
Vladislav Bunka
20 Die Schwalbe 150, p. 576, 12/1994
Kompositionsturnier zum 50. Geb.
von H.-P. Rehm
Lob o. R.
(4+3)
#6
b) wSa6
a) 1. c7! Kxa6 2. c8=D+ Kb5 3. Dc3 Ka4 4. Db2 Ka5 5. Db3 Ka6 6. Db6#;
b) 1. Sac5! Ka8 2. c7 Ka7 3. c8=S+ Ka8 4. Se7 Ka7 5. Sc6+ Ka8 6. Sb6#
b) 1. Sac5! Ka8 2. c7 Ka7 3. c8=S+ Ka8 4. Se7 Ka7 5. Sc6+ Ka8 6. Sb6#
SsS1 BUS4 FP Q24- mm
Henrik Juel: duals in part a), like 2... Ka5 3.Db7 Ka4 4.Sc5+,Se5
Part b) is C+ Popeye 4.61 (2023-07-29)
comment
Henrik Juel: duals in part a), like 2... Ka5 3.Db7 Ka4 4.Sc5+,Se5
Part b) is C+ Popeye 4.61 (2023-07-29)
comment
Keywords: Miniature Collection (0324538), Forsberg Twins, Zugzwang-Goal, Miniature, Promotion (wD), under-promotion (wS)
Genre: n#
FEN: 8/k2N4/P1P5/8/8/8/6p1/6Kb
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-07-29 more...
Genre: n#
FEN: 8/k2N4/P1P5/8/8/8/6p1/6Kb
Input: Felber, Volker, 2010-09-12
Last update: Dieter Berlin, 2023-07-29 more...
a) 1. Dc8! (2. Dh8) ... T~ 2. Dh3;
b) 1. Dd4! (Zugzwang) ... Kh5 2. Dh8
b) 1. Dd4! (Zugzwang) ... Kh5 2. Dh8
Keywords: Miniature Collection (0018141), Forsberg Twins
Genre: 2#
FEN: 8/8/6p1/6p1/2Q3rk/6p1/6K1/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/8/6p1/6p1/2Q3rk/6p1/6K1/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Lh7 Kxh7 2. Kg5 Kg8 3. Kg6 Kh8 4. Lg7+ Kg8 5. Sf6#;
b) 1. Kf5
b) 1. Kf5
MA-LS LO5 BsS0 FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Kf5! Kg8 2. Ke6 Kh8! 3. Ke7 Kg8 4. Sf6+ Kh8 5. g7# (2022-08-08)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Kf5! Kg8 2. Ke6 Kh8! 3. Ke7 Kg8 4. Sf6+ Kh8 5. g7# (2022-08-08)
comment
Keywords: Miniature Collection (0340420), Forsberg Twins
Genre: n#
FEN: 7k/8/6BB/7N/6K1/8/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 7k/8/6BB/7N/6K1/8/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Sd5? ... S~/e4 2. Sf6/Sf4, ... h3!;
1. Se2? ... e4/h3 2. Sf4/Sg3, ... S~!;
1. Se4! (Zugzwang) ... h3/S~ 2. Sg3/Sf6;
b) 1. Dd3? ... e4!;
1. De1? ... Sf2!;
1. Dc1? ... Se3!;
1. Dc6? ... Sf6!;
1. Dc4! (2. Df7) ... S~ 2. Dh4
1. Se2? ... e4/h3 2. Sf4/Sg3, ... S~!;
1. Se4! (Zugzwang) ... h3/S~ 2. Sg3/Sf6;
b) 1. Dd3? ... e4!;
1. De1? ... Sf2!;
1. Dc1? ... Se3!;
1. Dc6? ... Sf6!;
1. Dc4! (2. Df7) ... S~ 2. Dh4
Keywords: Miniature Collection (0272909), Forsberg Twins
Genre: 2#
FEN: 8/6K1/8/4p2k/6np/2N2N2/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/6K1/8/4p2k/6np/2N2N2/8/8
Input: Felber, Volker, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Sd2 Kh4 2. Se4 Kh5 3. Sf6+ Kh4 4. Tg4#;
b) 1. Lf6
b) 1. Lf6
T22S FP
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Lf6! g5! 2. Se5 g4! 3. Txg4 Kh6 4. Th4# (2022-08-08)
comment
SCHRECKE: a)+b): C+, Gustav 4.2a, Brute Force
b) 1. Lf6! g5! 2. Se5 g4! 3. Txg4 Kh6 4. Th4# (2022-08-08)
comment
Keywords: Miniature Collection (0337133), Forsberg Twins
Genre: n#
FEN: 8/8/6p1/6Pk/8/5NR1/6P1/7K
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: n#
FEN: 8/8/6p1/6Pk/8/5NR1/6P1/7K
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Df2 Ka1 2. Db2#
b) 1. Td2+ Kc1 2. Dc2#
1. Td2+ Ka1 2. Df1#
b) 1. Td2+ Kc1 2. Dc2#
1. Td2+ Ka1 2. Df1#
Keywords: Miniature Collection (0312167), Forsberg Twins
Genre: 2#
FEN: 8/7K/8/5Q2/8/3N4/8/1k6
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 2#
FEN: 8/7K/8/5Q2/8/3N4/8/1k6
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. d7 Kf7 2. d8=S+ Kf8 3. Lc5#;
b) 1. Sb5
b) 1. Sb5
Keywords: Miniature Collection (0342558), Forsberg Twins
Genre: 3#
FEN: 5k1K/B7/3PR3/8/8/8/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
Genre: 3#
FEN: 5k1K/B7/3PR3/8/8/8/8/8
Input: Zuncke/Bruder, 2010-09-12
Last update: Rainer Staudte, 2022-08-06 more...
a) 1. Td8+ Kb2 2. Th5 Ka3 3. Ta8+ Kb2 4. Td5 cxd5+ 5. Kd4 c6 6. Lc2 Kxc2#
b) 1. Th2+ Kb1 2. Se4 c5 3. Tc3 c6 4. Kb3 c4+ 5. Ka3 c5 6. Txa2 Txa2#
b) 1. Th2+ Kb1 2. Se4 c5 3. Tc3 c6 4. Kb3 c4+ 5. Ka3 c5 6. Txa2 Txa2#
Keywords: Forsberg Twins
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/2p4B/2p5/2N5/2K5/3RB2R/p1k5/b7
Input: Frank Müller, 2011-01-11
Last update: Marcin Banaszek, 2021-01-24 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 8/2p4B/2p5/2N5/2K5/3RB2R/p1k5/b7
Input: Frank Müller, 2011-01-11
Last update: Marcin Banaszek, 2021-01-24 more...
53 - P1191293
Diyan Kostadinov
875 The Ural's Problemist 01-03/2011
Speziallob Miniatur
(5+2) C+
s#7
b) wSe6
Diyan Kostadinov
875 The Ural's Problemist 01-03/2011
Speziallob Miniatur
(5+2) C+
s#7
b) wSe6
a) 1. Ld7 Kf7 2. Tg7+ Kf6 3. Te6+ Kf5 4. Th6+ Te6 5. Tgh7 Kg5 6. Th5+ Kg6 7. Le8+ Txe8#
b) 1. Sc7 Kf7 2. Tg7+ Kf6 3. Sb5 Kf5 4. Sd6+ Kf6 5. Dh4+ Tg5 6. Dh6+ Tg6 7. Tgg8 Txh6#
b) 1. Sc7 Kf7 2. Tg7+ Kf6 3. Sb5 Kf5 4. Sd6+ Kf6 5. Dh4+ Tg5 6. Dh6+ Tg6 7. Tgg8 Txh6#
Keywords: Aristocrat, Forsberg Twins
Genre: s#
FEN: 4R2K/8/4Bk2/4r3/3Q4/6R1/8/8
Input: Frank Müller, 2011-03-27
Last update: Marcin Banaszek, 2020-12-09 more...
Genre: s#
FEN: 4R2K/8/4Bk2/4r3/3Q4/6R1/8/8
Input: Frank Müller, 2011-03-27
Last update: Marcin Banaszek, 2020-12-09 more...
a) 1. Dc7! Sa5 2. Dxa5 Th2#
1. ... Sc5 2. Dxc5 Th2#
1. ... Sxd6 2. Dxd6 Th2#
1. ... Sd8 2. Dxd8 Th2#
b) 1. Lh6! Sa5 2. Sxa5 Th2#
1. ... Sc5 2. Sxc5 Th2#
1. ... Sxd6 2. Sxd6 Th2#
1. ... Sd8 2. Sxd8 Th2#
1. ... Sc5 2. Dxc5 Th2#
1. ... Sxd6 2. Dxd6 Th2#
1. ... Sd8 2. Dxd8 Th2#
b) 1. Lh6! Sa5 2. Sxa5 Th2#
1. ... Sc5 2. Sxc5 Th2#
1. ... Sxd6 2. Sxd6 Th2#
1. ... Sd8 2. Sxd8 Th2#
Keywords: Grab, Forsberg Twins
Genre: s#
Computer test: SCHRECKE: a)+b): C+, popeye 4.89
FEN: 8/1n4Q1/3PNPP1/8/2N3p1/3P1kpb/5pr1/5K2
Input: Frank Müller, 2011-12-17
Last update: Dieter Berlin, 2024-01-02 more...
Genre: s#
Computer test: SCHRECKE: a)+b): C+, popeye 4.89
FEN: 8/1n4Q1/3PNPP1/8/2N3p1/3P1kpb/5pr1/5K2
Input: Frank Müller, 2011-12-17
Last update: Dieter Berlin, 2024-01-02 more...
55 - P1235550
Mike Prcic
S0136 StrateGems 04-06/2001
2. Lob
(8+3) C+
s#5*
b) wLa2: s#4*
c) wTa2: s#3*
d) wDa2: s#3*
Mike Prcic
S0136 StrateGems 04-06/2001
2. Lob
(8+3) C+
s#5*
b) wLa2: s#4*
c) wTa2: s#3*
d) wDa2: s#3*
a) * 1. ... Dxa6#
1. Se1 Kb4 2. Dd2+ Ka4 3. Dd1+ Kb4 4. Sc2+ Ka4 5. Dd5 Dxa6#
b) * 1. ... Dxa6#
1. Se1 Kb4 2. Sc2+ Ka4 3. Lb1 a2 4. Lxa2 Dxa6#
c) * 1. ... Dxa6#
1. De4+ Kb3 2. De6+ Ka4 3. Dd5 Dxa6#
d) * 1. ... Dxa6#
1. Sc1 Kb4 2. Dd2+ Ka4 3. Sa2 Dxa6#
1. Se1 Kb4 2. Dd2+ Ka4 3. Dd1+ Kb4 4. Sc2+ Ka4 5. Dd5 Dxa6#
b) * 1. ... Dxa6#
1. Se1 Kb4 2. Sc2+ Ka4 3. Lb1 a2 4. Lxa2 Dxa6#
c) * 1. ... Dxa6#
1. De4+ Kb3 2. De6+ Ka4 3. Dd5 Dxa6#
d) * 1. ... Dxa6#
1. Sc1 Kb4 2. Dd2+ Ka4 3. Sa2 Dxa6#
Keywords: Forsberg Twins
Genre: s#
FEN: 8/2PP4/R1K5/q1RQ4/k7/p2N4/P7/8
Input: Frank Müller, 2012-03-31
Last update: Marcin Banaszek, 2021-10-28 more...
Genre: s#
FEN: 8/2PP4/R1K5/q1RQ4/k7/p2N4/P7/8
Input: Frank Müller, 2012-03-31
Last update: Marcin Banaszek, 2021-10-28 more...
a) 1. Tc5 Ka4 2. De8+ Ka3 3. Tc3 bxc3 4. Db5 c2#
b) 1. Sf6 Ka4 2. Se4 Ka3 3. Sc3 bxc3 4. Th4 c2#
b) 1. Sf6 Ka4 2. Se4 Ka3 3. Sc3 bxc3 4. Th4 c2#
Keywords: Forsberg Twins, Miniature, Pawn mate, Change of Sacrifices
Genre: s#
FEN: 6Q1/8/8/7R/1p6/kp6/1p6/1K6
Input: Frank Müller, 2012-09-20
Last update: Gunter Jordan, 2023-01-27 more...
Genre: s#
FEN: 6Q1/8/8/7R/1p6/kp6/1p6/1K6
Input: Frank Müller, 2012-09-20
Last update: Gunter Jordan, 2023-01-27 more...
a) 1. Td8 Tg7,Tg8 2. La5+ Kxc5 3. Td5+ Dxd5#
1. Td8 Dg1 2. Da5+ Kxc4 3. Td4+ Dxd4#
b) 1. Lb7 Tg7,Tg8 2. Da5+ Kxc4 3. Ld5+ Dxd5#
1. Lb7 Dg1 2. La5+ Kxc5 3. d4+ Dxd4#
1. Td8 Dg1 2. Da5+ Kxc4 3. Td4+ Dxd4#
b) 1. Lb7 Tg7,Tg8 2. Da5+ Kxc4 3. Ld5+ Dxd5#
1. Lb7 Dg1 2. La5+ Kxc5 3. d4+ Dxd4#
Keywords: Forsberg Twins, reciprocal changed continuations
Genre: s#
FEN: 2R5/8/QB2PP2/2N1KP2/1kN2P2/8/3Pp1rp/4Rb1q
Input: Frank Müller, 2012-11-04
Last update: Frank Müller, 2012-11-04 more...
Genre: s#
FEN: 2R5/8/QB2PP2/2N1KP2/1kN2P2/8/3Pp1rp/4Rb1q
Input: Frank Müller, 2012-11-04
Last update: Frank Müller, 2012-11-04 more...
a) 1. Lxb8 2. Le5 3. Lxb2 4. Lh8 Dxh8#
b) 1. Txe4 2. Txb4 3. Th4 4. Th1 Dxh1#
b) 1. Txe4 2. Txb4 3. Th4 4. Th1 Dxh1#
Jeweils 2-mal Beseitigung weißer Masse und Opfer
auf dem Mattfeld (Autor).
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-14)
comment
auf dem Mattfeld (Autor).
SCHRECKE: C+, Gustav 4.2c, Brute Force (2023-04-14)
comment
Keywords: Seriesmover, Forsberg Twins, Capture key, corner to corner (D), Corner mate, Model mate, Line opening
Genre: Fairies
Computer test: %C+ lt.Autor
FEN: QR6/8/K7/8/1P2Bb2/8/pP6/k7
Input: Erich Bartel, 2012-12-21
Last update: Gunter Jordan, 2023-04-14 more...
Genre: Fairies
Computer test: %C+ lt.Autor
FEN: QR6/8/K7/8/1P2Bb2/8/pP6/k7
Input: Erich Bartel, 2012-12-21
Last update: Gunter Jordan, 2023-04-14 more...
59 - P1279665
Oleg Paradzynskyi
1964 Suomen Tehtäväniekat 10/2000
Informalturnier 2000/01
Lob
(12+6) C+
s#6
b) sSd4
Oleg Paradzynskyi
1964 Suomen Tehtäväniekat 10/2000
Informalturnier 2000/01
Lob
(12+6) C+
s#6
b) sSd4
a) 1. Sxd6 Kxd6 2. c8=S+ Kd5 3. Le8 Kxe6 4. Tc6+ Kd5 5. Tc5+ Ke6 6. Te5+ Lxe5#
b) 1. Dxa5+ Sb5 2. Dd2+ Sd4 3. Tb2 Kc4 4. Tb4+ Kd5 5. Tb5+ Kc4 6. De2+ Sxe2#
b) 1. Dxa5+ Sb5 2. Dd2+ Sd4 3. Tb2 Kc4 4. Tb4+ Kd5 5. Tb5+ Kc4 6. De2+ Sxe2#
Keywords: Forsberg Twins
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 2N5/2PB4/1P1pP1p1/p2k1pP1/N2b1K2/4PP2/2RQ4/8
Input: Frank Müller, 2013-10-29
Last update: Marcin Banaszek, 2021-01-31 more...
Genre: s#
Computer test: Gustav 4.1d, Brute Force
FEN: 2N5/2PB4/1P1pP1p1/p2k1pP1/N2b1K2/4PP2/2RQ4/8
Input: Frank Müller, 2013-10-29
Last update: Marcin Banaszek, 2021-01-31 more...
60 - P1282913
Torsten Linss
2768 Rochade Europa 12/2013
Lob
Informalturnier 2012-2013
PR Hans Gruber
(5+2) C+
s#10
b) sLc7
Torsten Linss
2768 Rochade Europa 12/2013
Lob
Informalturnier 2012-2013
PR Hans Gruber
(5+2) C+
s#10
b) sLc7
a) 1. Da4+ Kc5 2. Dd4+ Kb5 3. Tf5+ Sd5 4. f8=T Ka5 5. Tb8 Kb5 6. e8=S Ka5 7. Ka8 Ka6 8. Dc4+ Ka5 9. Db4+ Ka6 10. Sc7+ Sxc7#
b) 1. e8=L+ Kc5 2. f8=D+ Ld6 3. Df5+ Le5 4. Da6 Kd5 5. Kc8 Kc5 6. Kd8 Kd5 7. Dac8 Kd6 8. Df8+ Kd5 9. Dg8+ Kd6 10. Tf6+ Lxf6#
b) 1. e8=L+ Kc5 2. f8=D+ Ld6 3. Df5+ Le5 4. Da6 Kd5 5. Kc8 Kc5 6. Kd8 Kd5 7. Dac8 Kd6 8. Df8+ Kd5 9. Dg8+ Kd6 10. Tf6+ Lxf6#
Keywords: Allumwandlung, Forsberg Twins, konsekutive Umwandlungen 2
Genre: s#
FEN: 8/1Kn1PP2/8/1k6/5R2/8/Q7/8
Reprints: Die Schwalbe (272), p. 102, 04/2014
2768 Die Schwalbe 12/2018
Input: TLi, 2014-02-06
Last update: Marcin Banaszek, 2020-12-27 more...
Genre: s#
FEN: 8/1Kn1PP2/8/1k6/5R2/8/Q7/8
Reprints: Die Schwalbe (272), p. 102, 04/2014
2768 Die Schwalbe 12/2018
Input: TLi, 2014-02-06
Last update: Marcin Banaszek, 2020-12-27 more...
a) 1. Dd5 Ke2 2. Kf4 Sd8 3. Lf5 Se6 4. Ke4 f3#
b) 1. c1=L d5 2. Lb2 Ke3 3. Lf6 Se7 4. Ke5 f4#
b) 1. c1=L d5 2. Lb2 Ke3 3. Lf6 Se7 4. Ke5 f4#
Keywords: Chameleon Echo, Ideal mate, under-promotion key (in b), Forsberg Twins, Miniature, Pawn mate, Pawn step variations, Remote selfblock (in a), Selfblock
Genre: h#
FEN: 8/8/2Nq4/5k2/3P4/5K2/2b2P2/8
Reprints: 26 Hilfsmattvierer , p. 11, 2000
Input: TLi, 2014-02-16
Last update: Gunter Jordan, 2021-12-27 more...
Genre: h#
FEN: 8/8/2Nq4/5k2/3P4/5K2/2b2P2/8
Reprints: 26 Hilfsmattvierer , p. 11, 2000
Input: TLi, 2014-02-16
Last update: Gunter Jordan, 2021-12-27 more...
62 - P1317443
Sergey Radchenko
10322 Ideal-Mate Review 76 10-12/1999
Preis
PR Eugene Albert
(4+3)
ser-h#5
b) wLf4
Sergey Radchenko
10322 Ideal-Mate Review 76 10-12/1999
Preis
PR Eugene Albert
(4+3)
ser-h#5
b) wLf4
a) 1. Kxf1 2. Kxe2 3. Ke1 4. h1=T 5. Tf1 Te4#
b) 1. h1=L 2. Lhg2 3. Lxf1 4. Lxe2 5. f1=L Lg3#
b) 1. h1=L 2. Lhg2 3. Lxf1 4. Lxe2 5. f1=L Lg3#
Keywords: Forsberg Twins, Ideal mate, Miniature, Phoenix (in b), Round Trip (in a), Selfblock, Seriesmover, Promotion key (in b), Exchange of Promotions, under-promotion, Twin
Genre: Fairies
FEN: 8/8/8/8/5R2/8/4Pp1p/2K1kB2
Input: Gunter Jordan, 2016-02-19
Last update: Rainer Staudte, 2023-01-19 more...
Genre: Fairies
FEN: 8/8/8/8/5R2/8/4Pp1p/2K1kB2
Input: Gunter Jordan, 2016-02-19
Last update: Rainer Staudte, 2023-01-19 more...
63 - P1341579
Michel Olausson
PS224 The Problemist Supplement 12 05/1994
(3+3) C+
h#2
Circe
Umwandlung auch
b) wSUc1 statt wTLc1
wSU,sSU=Nachtreiter
wTL=Pao
Michel Olausson
PS224 The Problemist Supplement 12 05/1994
(3+3) C+
h#2
Circe
Umwandlung auch
b) wSUc1 statt wTLc1
wSU,sSU=Nachtreiter
wTL=Pao
a) 1. b1=N d8=D 2. Nd5 Dxd5[+sNd1]#
b) 1. bxc1=PA[+wNc8] d8=N 2. PAg1 Nf2#
Laut Begleittext ist in b) Umwandlung in PAO erlaubt
b) 1. bxc1=PA[+wNc8] d8=N 2. PAg1 Nf2#
Laut Begleittext ist in b) Umwandlung in PAO erlaubt
Keywords: Circe, Forsberg Twins, Promotion
Pieces: = Nightrider (N), = Pao (PA)
Genre: Fairies
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-02-26)
FEN: 6K1/3P4/8/8/8/8/1p5*2n/2*3R4k
Input: HBae, 2017-10-12
Last update: James Malcom, 2021-02-27 more...
Pieces: = Nightrider (N), = Pao (PA)
Genre: Fairies
Computer test: Henrik Juel: C+ Popeye 4.61 (2021-02-26)
FEN: 6K1/3P4/8/8/8/8/1p5*2n/2*3R4k
Input: HBae, 2017-10-12
Last update: James Malcom, 2021-02-27 more...
a) 1. Tb4-b6 Kb1-a2 2. De2-b5 Tb2-b1#
b) 1. Kf1-e1 Kb1-c1 2. De2-e5 Lb2-c3#
Cook: NL:
a) 1. De2-b5 Kb1-c2 2. Tb4-a4 Tb2-b1#
b) 1. Kf1-e1 Kb1-c1 2. De2-e5 Lb2-c3#
Cook: NL:
a) 1. De2-b5 Kb1-c2 2. Tb4-a4 Tb2-b1#
Yuri Bilokin: Correction: 5R2/2rpp2b/1B6/8/1pr3n1/8/2R2qpp/2K3k1 (4+11) h#2 b) wBc2
a) 1.R4c6 Kb2 2.Qc5 Rc1#
b) 1.Kf1 Kd1 2.Qf5 Bd3# (2021-05-22)
comment
a) 1.R4c6 Kb2 2.Qc5 Rc1#
b) 1.Kf1 Kd1 2.Qf5 Bd3# (2021-05-22)
comment
Keywords: Forsberg Twins
Genre: h#
FEN: 4R2b/1rpp4/B7/8/1r3p2/5p2/1R2qpp1/1K3k2
Input: Marcin Banaszek, 2019-11-20
Last update: Alfred Pfeiffer, 2019-11-21 more...
Genre: h#
FEN: 4R2b/1rpp4/B7/8/1r3p2/5p2/1R2qpp1/1K3k2
Input: Marcin Banaszek, 2019-11-20
Last update: Alfred Pfeiffer, 2019-11-21 more...
65 - P1380203
Alberto Armeni
2369 Problemskak 49, p. 15, 01/2020
(6+3) C+
h#2
Andernachschach
b) sSh3 statt sLh3
c) sTh3 statt sLh3
Alberto Armeni
2369 Problemskak 49, p. 15, 01/2020
(6+3) C+
h#2
Andernachschach
b) sSh3 statt sLh3
c) sTh3 statt sLh3
a) 1. Lh3-g2 h3 2. Lxh3[=wLh3] Lh3-g2#
b) 1. Sf2 g4 2. Sxg4[=wSg4] Sf6#
c) 1. Th6 d6 2. Txd6[=wTd6] Td4#
gemischtfarbiger Meeraner, Themafiguren: wL & sL (in a)
b) 1. Sf2 g4 2. Sxg4[=wSg4] Sf6#
c) 1. Th6 d6 2. Txd6[=wTd6] Td4#
gemischtfarbiger Meeraner, Themafiguren: wL & sL (in a)
Henrik Juel: Yes, the condition is Andernachschach
The danish magazine is spelled Problemskak, not Problemschack
Complete source: 2369 Problemskak no.49 p.15 01/2020
(Actually this quarterly is dated 1./2./3./4. quarter, but is usually appears in months 01/04/07/10) (2020-09-23)
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The danish magazine is spelled Problemskak, not Problemschack
Complete source: 2369 Problemskak no.49 p.15 01/2020
(Actually this quarterly is dated 1./2./3./4. quarter, but is usually appears in months 01/04/07/10) (2020-09-23)
more ...
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Keywords: Forsberg Twins (-Drilling), Meerane-Thema (in a), Switchback (in a), Andernach Chess
Genre: Fairies
FEN: 8/8/8/3P1p2/4kP2/4P1Pb/4K2P/8
Input: Gunter Jordan, 2020-09-23
Last update: Gunter Jordan, 2021-02-26 more...
Genre: Fairies
FEN: 8/8/8/3P1p2/4kP2/4P1Pb/4K2P/8
Input: Gunter Jordan, 2020-09-23
Last update: Gunter Jordan, 2021-02-26 more...
66 - P1380720
Mirko Degenkolbe
Franz Pachl
Problem-Echo 2004
6. Lob
22. Thematurnier
(5+10) C+
h#2
b) wLe5 statt wSe5
c) wTe5 statt wSe5
Mirko Degenkolbe
Franz Pachl
Problem-Echo 2004
6. Lob
22. Thematurnier
(5+10) C+
h#2
b) wLe5 statt wSe5
c) wTe5 statt wSe5
a) 1. Sd7 dxc7+ 2. Lxc7 Sc6#
b) 1. Td7 dxe7+ 2. Kxe7 Lxf6#
c) 1. Sc6 d7 2. Kxd7 Td5#
b) 1. Td7 dxe7+ 2. Kxe7 Lxf6#
c) 1. Sc6 d7 2. Kxd7 Td5#
(MD243)
Dreifaches Hineinziehungs-Opfer des weißen Bauern auf der siebenten Reihe im Forsberg-Drilling.
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Dreifaches Hineinziehungs-Opfer des weißen Bauern auf der siebenten Reihe im Forsberg-Drilling.
more ...
comment
Keywords: Forsberg Twins, Drag-in sacrifice
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 1nrkq3/2r1p1K1/3P1p2/b1P1NPnb/8/8/8/8
Input: Felber, Volker, 2020-10-06
Last update: Felber, Volker, 2022-01-01 more...
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 1nrkq3/2r1p1K1/3P1p2/b1P1NPnb/8/8/8/8
Input: Felber, Volker, 2020-10-06
Last update: Felber, Volker, 2022-01-01 more...
a) 1. Dd4 Sb1 2. Kc4 Ke1 3. Kd3 Lf1# abc
b) 1. Kd4 Ke1 2. Kc3 Lf1 3. Ld4 Sb1# acb
http://superproblem.ru/archive/probl/H3/Kirichenko-h3-2020.gif
b) 1. Kd4 Ke1 2. Kc3 Lf1 3. Ld4 Sb1# acb
http://superproblem.ru/archive/probl/H3/Kirichenko-h3-2020.gif
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye 4.61
FEN: 8/8/8/2k5/1q2P3/1p2bP2/1ppN2B1/5K2
Input: James Malcom, 2020-10-17
Last update: Alfred Pfeiffer, 2020-10-19 more...
Genre: h#
Computer test: Popeye 4.61
FEN: 8/8/8/2k5/1q2P3/1p2bP2/1ppN2B1/5K2
Input: James Malcom, 2020-10-17
Last update: Alfred Pfeiffer, 2020-10-19 more...
68 - P1382055
Jacques Rotenberg
Dominique Forlot
7852 Phénix 273-274 05-06/2017
(3+3) C+
h#4
b) sLg7 statt sBg7
Jacques Rotenberg
Dominique Forlot
7852 Phénix 273-274 05-06/2017
(3+3) C+
h#4
b) sLg7 statt sBg7
a) 1. Se5-f7 Tc6-c8 2. Kd5-e6 Tc8-a8 3. Ke6-e7 Lh2-b8 4. Ke7-f8 Lb8-d6#
b) 1. Kd5-d4 Tc6-c8 2. Se5-d3 Lh2-c7 3. Kd4-c3 Ka1-a2 4. Lg7-d4 Lc7-a5#
b) 1. Kd5-d4 Tc6-c8 2. Se5-d3 Lh2-c7 3. Kd4-c3 Ka1-a2 4. Lg7-d4 Lc7-a5#
Jacques Rotenberg: Dominique Forlot is co-author
Themes :
Indian, critical moves, echo model mates (2020-11-20)
comment
Themes :
Indian, critical moves, echo model mates (2020-11-20)
comment
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye 4.83
FEN: 8/6p1/2R5/3kn3/8/8/7B/K7
Input: Marcin Banaszek, 2020-11-18
Last update: Alfred Pfeiffer, 2020-11-26 more...
Genre: h#
Computer test: Popeye 4.83
FEN: 8/6p1/2R5/3kn3/8/8/7B/K7
Input: Marcin Banaszek, 2020-11-18
Last update: Alfred Pfeiffer, 2020-11-26 more...
a) No permitted moves
b) 1. fxg6ep+ Kxg6 2. Dg5#
The end position is dead if Black's last move was R: 1. ... g6-g5+ (stalemate is inevitable) but not if it was R: 1. ... g7-g5+ which allows for e.p. Looking at the position prior to the last move:
a) the position with sB on g6 is not dead regardless since the sD can intervene instead of the bP move. This makes the e.p. invalid which would force 1. Dxg5+ Txg5=
b) the position with sB on g6 is already dead so the sB must have come from g7 allowing white to win by 1. fxg6ep+
b) 1. fxg6ep+ Kxg6 2. Dg5#
The end position is dead if Black's last move was R: 1. ... g6-g5+ (stalemate is inevitable) but not if it was R: 1. ... g7-g5+ which allows for e.p. Looking at the position prior to the last move:
a) the position with sB on g6 is not dead regardless since the sD can intervene instead of the bP move. This makes the e.p. invalid which would force 1. Dxg5+ Txg5=
b) the position with sB on g6 is already dead so the sB must have come from g7 allowing white to win by 1. fxg6ep+
AB: So what happens in a)? We can't know from the position, even with DP. If White can ep, he wins; if he can't the position is newly dead but still legal (as the alternative last move Qe3 would have kept the game alive). The ep convention specifically resolves the permissibility of the ep itself, but it's too narrow to claim (as at one point I did) that it fails to resolve the permissibility of the contingent Qg5+. So there are no permitted moves.
Suggested position evaluation in orthodox problem chess (OPC) (sketch):
1) What legal moves are there? ("legal" as per FIDE)
2) If 0 legal moves, then is there check? Yes/No => Mate/Pat.
Otherwise there is at least 1 legal move.
If an ep is legal set flag
3) Has this position occurred before? Yes/No => 3Rep/continue.
Is this RETRO? Yes/No => continue/play any legal move.
4) 50.0 moves since last capture or pawn move? Yes/No => 50M/continue
5) Check the child nodes recursively until find which mate. Success/Fail? => play any legal move)/Dead
Henrik Juel: 1.Dxg5+ Txg5= seems to secure half a point in both twins
So there is probably some DP trickery, which Andrew will explain soon... (2020-12-03)
Yoav Ben-Zvi: The end position is dead if Black's last move was -1...bPg6-g5 (Stalemate is inevitable) but not if it was -1...bPg7-g5 which allows for e.p. Looking at the position prior to the last move: in a) it is not dead regardless since the bQ can intervene instead of the bP move (this makes the e.p. invalid forcing 1.wQxg5) but in b) the position with bP on g6 is already dead so the bP must have come from g7 allowing white to win by 1.wPf5xg6 e.p. (2020-12-04)
A.Buchanan: Suggested principle for orthodox problem chess (OPC): playing forwards chess should always be on the basis (at least conceptually) of knowing the full gamestate (castling, e.p.). One can then run the forwards chess for each combination. Call this a "scenario" Some combinations can be rejected as illegal, and we can then hand over to the castling/ep conventions to clear things up.
In a), this results in game over. This makes sense, because under DP the drawing 1.Qg5+ is only playable if the living 1.fxg6ep+ is also playable. So the ep convention nixes both.
And how does the game end exactly? The same thing can happen in a simpler position: 8/k7/2p5/KpP5/1P6/8/8/8 WTM. There are two retro-possibilities, one is pat and the other keeps on going. It's nothing to do with DP rule.
Under RS: The ep convention ends the game, but we can't assume that the history of the game was not the double pawn move! We are just not *permitted* to make this move. We have "draw by ep convention".
Under PRA: our solution comprises one twin, and in that twin, we can assume that ep is actually illegal (or it should be if the conventions were worded properly!) and the position is pat.
The goal here is to codify OPC properly so that it can serve as foundation for retro fairies.
OPC allows for the variations in the castling/ep conventions & protocols. It merely hands off the results of each gamestate scenario. (2022-01-19)
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comment
Suggested position evaluation in orthodox problem chess (OPC) (sketch):
1) What legal moves are there? ("legal" as per FIDE)
2) If 0 legal moves, then is there check? Yes/No => Mate/Pat.
Otherwise there is at least 1 legal move.
If an ep is legal set flag
3) Has this position occurred before? Yes/No => 3Rep/continue.
Is this RETRO? Yes/No => continue/play any legal move.
4) 50.0 moves since last capture or pawn move? Yes/No => 50M/continue
5) Check the child nodes recursively until find which mate. Success/Fail? => play any legal move)/Dead
Henrik Juel: 1.Dxg5+ Txg5= seems to secure half a point in both twins
So there is probably some DP trickery, which Andrew will explain soon... (2020-12-03)
Yoav Ben-Zvi: The end position is dead if Black's last move was -1...bPg6-g5 (Stalemate is inevitable) but not if it was -1...bPg7-g5 which allows for e.p. Looking at the position prior to the last move: in a) it is not dead regardless since the bQ can intervene instead of the bP move (this makes the e.p. invalid forcing 1.wQxg5) but in b) the position with bP on g6 is already dead so the bP must have come from g7 allowing white to win by 1.wPf5xg6 e.p. (2020-12-04)
A.Buchanan: Suggested principle for orthodox problem chess (OPC): playing forwards chess should always be on the basis (at least conceptually) of knowing the full gamestate (castling, e.p.). One can then run the forwards chess for each combination. Call this a "scenario" Some combinations can be rejected as illegal, and we can then hand over to the castling/ep conventions to clear things up.
In a), this results in game over. This makes sense, because under DP the drawing 1.Qg5+ is only playable if the living 1.fxg6ep+ is also playable. So the ep convention nixes both.
And how does the game end exactly? The same thing can happen in a simpler position: 8/k7/2p5/KpP5/1P6/8/8/8 WTM. There are two retro-possibilities, one is pat and the other keeps on going. It's nothing to do with DP rule.
Under RS: The ep convention ends the game, but we can't assume that the history of the game was not the double pawn move! We are just not *permitted* to make this move. We have "draw by ep convention".
Under PRA: our solution comprises one twin, and in that twin, we can assume that ep is actually illegal (or it should be if the conventions were worded properly!) and the position is pat.
The goal here is to codify OPC properly so that it can serve as foundation for retro fairies.
OPC allows for the variations in the castling/ep conventions & protocols. It merely hands off the results of each gamestate scenario. (2022-01-19)
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Keywords: En passant, Forsberg Twins, Dead Position
Genre: Retro
FEN: 6r1/5p1p/5P1k/5Pp1/6pK/8/3Q4/6q1
Input: A.Buchanan, 2020-12-03
Last update: A.Buchanan, 2022-01-19 more...
Genre: Retro
FEN: 6r1/5p1p/5P1k/5Pp1/6pK/8/3Q4/6q1
Input: A.Buchanan, 2020-12-03
Last update: A.Buchanan, 2022-01-19 more...
70 - P1383111
Andriy Sergiyenko
134 Schach , p. 51, 09/2020
Corona Kompositionsturnier 2020
(5+2) C+
#2
b) wTf3 statt wLf3
Andriy Sergiyenko
134 Schach , p. 51, 09/2020
Corona Kompositionsturnier 2020
(5+2) C+
#2
b) wTf3 statt wLf3
a) 1. c8=T! Ka6 2. Ta8#
b) 1. c8=L! Ka8 2. Ta3#
b) 1. c8=L! Ka8 2. Ta3#
Keywords: Forsberg Twins, under-promotion key (T,L)
Genre: 2#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/k1P1n1R1/8/2K1B3/8/5B2/8/8
Input: Felber, Volker, 2020-12-18
Last update: Alfred Pfeiffer, 2020-12-19 more...
Genre: 2#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/k1P1n1R1/8/2K1B3/8/5B2/8/8
Input: Felber, Volker, 2020-12-18
Last update: Alfred Pfeiffer, 2020-12-19 more...
a) 1. Tc4? Lh2,L~ 2. Ta4#
1. ... La7 2. Sc7#
1. ... Lc7!
1. Tc6! Lh2,L~ 2. Ta6#
1. ... La7 2. Sc7#
b) 1. Tc6? Ka7,L~ 2. Ta6#
1. ... La7!
1. b6! Lh2,L~ 2. Ta5#
1. ... La7 2. b7#
1. ... La7 2. Sc7#
1. ... Lc7!
1. Tc6! Lh2,L~ 2. Ta6#
1. ... La7 2. Sc7#
b) 1. Tc6? Ka7,L~ 2. Ta6#
1. ... La7!
1. b6! Lh2,L~ 2. Ta5#
1. ... La7 2. b7#
Keywords: Miniature, Forsberg Twins, Aristocrat (in a)
Genre: 2#
FEN: kbK5/8/8/1NR5/8/8/8/8
Input: Rainer Staudte, 2021-01-05
Last update: Felber, Volker, 2021-01-09 more...
Genre: 2#
FEN: kbK5/8/8/1NR5/8/8/8/8
Input: Rainer Staudte, 2021-01-05
Last update: Felber, Volker, 2021-01-09 more...
72 - P1385119
Aleksandr Pankratiev
Aleksey Ivunin
The Royal Moroccan Chess Federation (FRME) 12/2020
Lob
6. Turnier FRME
Sektion h#2,5-3
(3+8) C+
h#3
b) wSe6 statt wBe6
c) wLe6 statt wBe6
d) wTe6 statt wBe6
Aleksandr Pankratiev
Aleksey Ivunin
The Royal Moroccan Chess Federation (FRME) 12/2020
Lob
6. Turnier FRME
Sektion h#2,5-3
(3+8) C+
h#3
b) wSe6 statt wBe6
c) wLe6 statt wBe6
d) wTe6 statt wBe6
a) 1. Le8-a4 e6-e7 2. La4-c2 e7-e8=D 3. Lc2-d3 De8-a4#
b) 1. Kc4-d3 Se4-c3 2. Kd3-d2 Se6-d4 3. Kd2-e1 Sd4-f3#
c) 1. Kc4-d3 Kg1-f2 2. d5-d4 Le6-a2 3. c5-c4 La2-b1#
d) 1. Kc4-b3 Se4-c3 2. Kb3-b2 Te6-e2+ 3. Kb2-a1 Te2-a2#
Judge Kenneth Solja
b) 1. Kc4-d3 Se4-c3 2. Kd3-d2 Se6-d4 3. Kd2-e1 Sd4-f3#
c) 1. Kc4-d3 Kg1-f2 2. d5-d4 Le6-a2 3. c5-c4 La2-b1#
d) 1. Kc4-b3 Se4-c3 2. Kb3-b2 Te6-e2+ 3. Kb2-a1 Te2-a2#
Judge Kenneth Solja
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye 4.83
FEN: 4b3/8/3pP1rn/2pp2p1/2k1N3/8/8/6K1
Input: Marcin Banaszek, 2021-01-07
Last update: Marcin Banaszek, 2021-01-08 more...
Genre: h#
Computer test: Popeye 4.83
FEN: 4b3/8/3pP1rn/2pp2p1/2k1N3/8/8/6K1
Input: Marcin Banaszek, 2021-01-07
Last update: Marcin Banaszek, 2021-01-08 more...
a) 1. Le3! Lh4+ 2. Lf2 Ld8 3. Tf6 La5#
b) 1. Se4! La3 2. Sf2 Lf8 3. Lb4 Lxb4#
* 1. ... Lh4#
b) 1. Se4! La3 2. Sf2 Lf8 3. Lb4 Lxb4#
* 1. ... Lh4#
Keywords: Miniature, Forsberg Twins, Maximummer
Genre: Fairies
Computer test: popeye 4.85
FEN: 8/4b3/3R4/8/8/5p2/k2Bp3/4K3
Input: Felber, Volker, 2021-01-11
Last update: Felber, Volker, 2021-01-16 more...
Genre: Fairies
Computer test: popeye 4.85
FEN: 8/4b3/3R4/8/8/5p2/k2Bp3/4K3
Input: Felber, Volker, 2021-01-11
Last update: Felber, Volker, 2021-01-16 more...
a) 1. Kf4 Sc5 2. Ke5 Tf6#
b) 1. Kf4 Lg4+ 2. Ke5 Td6#
c) 1. Kf4 Kf5 2. Ke5 Td4#
Gleiche schwarze Züge.
b) 1. Kf4 Lg4+ 2. Ke5 Td6#
c) 1. Kf4 Kf5 2. Ke5 Td4#
Gleiche schwarze Züge.
Keywords: Aristocrat, Forsberg Twins, Köko, Rex solus (s), Miniature
Genre: Fairies
Computer test: Popeye 4.61
FEN: 8/3N4/2R5/8/4K3/5k2/8/8
Input: Gunter Jordan, 2021-04-04
Last update: Arnold Beine, 2021-04-05 more...
Genre: Fairies
Computer test: Popeye 4.61
FEN: 8/3N4/2R5/8/4K3/5k2/8/8
Input: Gunter Jordan, 2021-04-04
Last update: Arnold Beine, 2021-04-05 more...
75 - P1390611
Alexander Fica
18407 Die Schwalbe 306-1 12/2020
(4+8) C+
h#3,5
b) sBf2->d7
c) ferner sTd7 statt sBd7
d) ferner sSa4 statt sBa4
e) ferner -sBe4
Alexander Fica
18407 Die Schwalbe 306-1 12/2020
(4+8) C+
h#3,5
b) sBf2->d7
c) ferner sTd7 statt sBd7
d) ferner sSa4 statt sBa4
e) ferner -sBe4
a) 1. ... Le6 2. Kc5 d4+ 3. Kd6 d5 4. c5 Lh2#
b) 1. ... Ld4 2. d5 Lxf6 3. Kc5 d4+ 4. Kd6 Le5#
c) 1. ... Le3 2. Td3 Le6 3. Tc3 dxc3+ 4. Ka3 Lc1#
d) 1. ... d4 2. Td6 Lg4 3. Kc4 Ld1 4. Kd5 Lb3#
e) 1. ... Lc5+ 2. Kb5 d4 3. Ta7 Lf5 4. Ta5 Ld3#
b) 1. ... Ld4 2. d5 Lxf6 3. Kc5 d4+ 4. Kd6 Le5#
c) 1. ... Le3 2. Td3 Le6 3. Tc3 dxc3+ 4. Ka3 Lc1#
d) 1. ... d4 2. Td6 Lg4 3. Kc4 Ld1 4. Kd5 Lb3#
e) 1. ... Lc5+ 2. Kb5 d4 3. Ta7 Lf5 4. Ta5 Ld3#
Keywords: Forsberg Twins
Genre: h#
Computer test: Gustav 4.1d, Brute Force
FEN: 2B5/4p3/2p2p2/7b/pk2p3/8/3P1p2/6BK
Input: Die Schwalbe, 2021-06-08
Last update: Alfred Pfeiffer, 2021-10-12 more...
Genre: h#
Computer test: Gustav 4.1d, Brute Force
FEN: 2B5/4p3/2p2p2/7b/pk2p3/8/3P1p2/6BK
Input: Die Schwalbe, 2021-06-08
Last update: Alfred Pfeiffer, 2021-10-12 more...
76 - P1391731
Mirko Degenkolbe
Frank Fiedler
Bulletin 07/2021
1. Platz, Abteilung Orthodox
Victory-Thematurnier zum virtuellen Sachsentreffen 2021
PR: Die Teilnehmer des TT.
(5+2) C+
#5
b) wBa4 statt wSa4
Mirko Degenkolbe
Frank Fiedler
Bulletin 07/2021
1. Platz, Abteilung Orthodox
Victory-Thematurnier zum virtuellen Sachsentreffen 2021
PR: Die Teilnehmer des TT.
(5+2) C+
#5
b) wBa4 statt wSa4
a) 1. Sa2! Kxa2 2. Sbc4 Ka1 3. Kxe4 Ka2 4. Sc3+ Ka1 5. Sb3#
b) 1. Sdc4+! Kb4 2. Kd4 e3 3. Sbd3+ Kxa4 4. Kc5 e2 5. Sdb2#
b) 1. Sdc4+! Kb4 2. Kd4 e3 3. Sbd3+ Kxa4 4. Kc5 e2 5. Sdb2#
(MD1510)
Formschönes „V“, Springeropfer im Gib-Nimm-Schlüssel und Mustermatt-Abschluss. (F. Fiedler)
Frank steuerte den Zwilling bei und wurde zum Mitautor.
Forderung: Konstruiere ein Schachproblem deiner Wahl (außer Märchenschach) in Gestalt eines V (=
Victory) und besiege das Coronavirus der zweiten Welle.
Das Turnier fand im Frühjahr 2021 statt. Initiator und Turnierleiter war erneut Matthias Hentschel.
Preisbericht in: Broschüre "Preisberichte C-Turnier und V-Turnier", udv (Udo Degener Verlag) 2021
Henrik Juel: C+ Popeye 4.61 (2021-07-15)
comment
Formschönes „V“, Springeropfer im Gib-Nimm-Schlüssel und Mustermatt-Abschluss. (F. Fiedler)
Frank steuerte den Zwilling bei und wurde zum Mitautor.
Forderung: Konstruiere ein Schachproblem deiner Wahl (außer Märchenschach) in Gestalt eines V (=
Victory) und besiege das Coronavirus der zweiten Welle.
Das Turnier fand im Frühjahr 2021 statt. Initiator und Turnierleiter war erneut Matthias Hentschel.
Preisbericht in: Broschüre "Preisberichte C-Turnier und V-Turnier", udv (Udo Degener Verlag) 2021
Henrik Juel: C+ Popeye 4.61 (2021-07-15)
comment
Keywords: Symbol problem (V), Flight giving and taking key, Model mate, Minimal, Miniature, Non-standard material, Forsberg Twins, Knight sacrifice
Genre: s#
FEN: 8/8/8/8/N3p3/k3K3/1N1N4/2N5
Input: Felber, Volker, 2021-07-14
Last update: Alfred Pfeiffer, 2022-01-27 more...
Genre: s#
FEN: 8/8/8/8/N3p3/k3K3/1N1N4/2N5
Input: Felber, Volker, 2021-07-14
Last update: Alfred Pfeiffer, 2022-01-27 more...
77 - P1393755
Hans-Peter Reich
Achim Schöneberg
12496 feenschach 244, p. 69, 02-04/2021
(5+1+3)
h=3
0.1...
Virrey
b) wTh6 statt wLh6
Hans-Peter Reich
Achim Schöneberg
12496 feenschach 244, p. 69, 02-04/2021
(5+1+3)
h=3
0.1...
Virrey
b) wTh6 statt wLh6
a) 1. ... d8=nD 2. Dg8+ hxg8=nS 3. Sxf6 Lg7=
b) 1. ... h8=nT 2. Tc8 dxc8=nL 3. Lf5 Th5=
b) 1. ... h8=nT 2. Tc8 dxc8=nL 3. Lf5 Th5=
Henrik Juel: Virrey is a very artificial condition requiring pawns to promote to the officer type standing on the promotion square in the initial array, on e1/e8 to a non-royal king
Here DTLS on d8/h8/c8/g8 (2021-09-17)
comment
Here DTLS on d8/h8/c8/g8 (2021-09-17)
comment
Keywords: Allumwandlung, Forsberg Twins, Virrey Chess
Genre: Fairies
Computer test: WinChloe 3.52
FEN: 8/3-P1K1-P/5-P1B/2P1k3/4P3/4P3/8/8
Input: hpr, 2021-09-15
Last update: hpr, 2021-10-13 more...
Genre: Fairies
Computer test: WinChloe 3.52
FEN: 8/3-P1K1-P/5-P1B/2P1k3/4P3/4P3/8/8
Input: hpr, 2021-09-15
Last update: hpr, 2021-10-13 more...
a) 1. ... Lxg5 2. exf3 Le7 3. Ld3 La3 4. e4 Lc1#
b) 1. ... Txh3 2. Lxf4 Th1 3. Sgxf3 Tc1 4. Sd2 Tc3#
b) 1. ... Txh3 2. Lxf4 Th1 3. Sgxf3 Tc1 4. Sd2 Tc3#
Keywords: Sharper (TB, LB), Forsberg Twins
Genre: h#
Computer test: WinChloe 3.52
FEN: 1K6/7b/7p/4p1nP/3npPPB/4kP1p/4pp1b/8
Input: hpr, 2021-10-12
Last update: Achim Schöneberg, 2023-12-03 more...
Genre: h#
Computer test: WinChloe 3.52
FEN: 1K6/7b/7p/4p1nP/3npPPB/4kP1p/4pp1b/8
Input: hpr, 2021-10-12
Last update: Achim Schöneberg, 2023-12-03 more...
a) 1. Tb4+ Ka7 2. Kc4 Se6 3. Kb3 Ka6 4. Ka4 Sc5#
b) 1. Sb6 Se6 2. Kc4 b3+ 3. Kb5 b4 4. Ka6 Sc7#
b) 1. Sb6 Se6 2. Kc4 b3+ 3. Kb5 b4 4. Ka6 Sc7#
Keywords: Echo, Forsberg Twins, Ideal mate, Minimal (t), Selfblock, Miniature
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 1K6/8/8/8/2rN4/3k4/1P6/8
Input: Gunter Jordan, 2022-07-10
Last update: Gunter Jordan, 2022-07-10 more...
Genre: h#
Computer test: Popeye Windows-64Bit v4.85 (4096 KB)
FEN: 1K6/8/8/8/2rN4/3k4/1P6/8
Input: Gunter Jordan, 2022-07-10
Last update: Gunter Jordan, 2022-07-10 more...
a) 1. Tb5! Ke8 2. Tf6! Kd8,Ke7,Kd7 3. Dd6+ Ld7 4. Te5 Kc8 5. Da6+ Kd8,Kc7 6. Da5+ Kc8 7. Tc6+ Lxc6#
3. ... Ke8 4. Df8+ Kd7 5. Td6+ Kc7 6. Tb7+ Lxb7#
b) 1. Tb7! Ke8 2. De5+ Le6 3. Tff7! Kd8 4. Tb8+ Lc8 5. Tf6! Kd7 6. Td6+ Kc7 7. Tb7+ Lxb7#
2. ... Kd8 3. Tb8! Kd7 4. Tf7+ Kd8 5. Tf6! Kd7 6. Td6+ Kc7 7. Tb7+ Lxb7#
3. ... Ke8 4. Df8+ Kd7 5. Td6+ Kc7 6. Tb7+ Lxb7#
b) 1. Tb7! Ke8 2. De5+ Le6 3. Tff7! Kd8 4. Tb8+ Lc8 5. Tf6! Kd7 6. Td6+ Kc7 7. Tb7+ Lxb7#
2. ... Kd8 3. Tb8! Kd7 4. Tf7+ Kd8 5. Tf6! Kd7 6. Td6+ Kc7 7. Tb7+ Lxb7#
Keywords: Forsberg Twins, Aristocrat, Minimal (l), Miniature
Genre: s#
FEN: KQbk4/B4R2/8/5R2/8/8/8/8
Reprints: ru_chess_art 20/08/2022
Input: Rainer Staudte, 2022-09-08
Last update: Marcin Banaszek, 2022-09-22 more...
Genre: s#
FEN: KQbk4/B4R2/8/5R2/8/8/8/8
Reprints: ru_chess_art 20/08/2022
Input: Rainer Staudte, 2022-09-08
Last update: Marcin Banaszek, 2022-09-22 more...
81 - P1404563
Horst Böttger
Bert Kölske
18853 Die Schwalbe 313, p. 449, 02/2022
(5+12)
h#3
0.1.1...
b) wLh3 statt wTh3
Horst Böttger
Bert Kölske
18853 Die Schwalbe 313, p. 449, 02/2022
(5+12)
h#3
0.1.1...
b) wLh3 statt wTh3
a) 1. ... e7 2. Te5 Th6 3. Lb8 Sb5#
b) 1. ... dxe4 2. Tb2 Lf1 3. Sb6 Sc6#
18853 (Horst Böttger & Bert Kölske). I) 1.– e7 2.Te5 Th6 3.Lb8 Sb5#(MM), II) 1.– d:e4 2.Tb2 Lf1 3.Sb6 Sc6#(MM). „Die weißen Themasteine auf h3 müssen zur Deckung der Felder a6 & b6 (A) bzw. a6 (B) in Stellung gebracht werden, was hier in schöner Analogie jeweils nur durch linienräumende Züge beider Parteien erreicht werden kann: zunächst durchWeiß selbst im Anfangszug und dann durch die Züge von Schwarz, der dabei in seinem Erstzug zugleich den Mattstein (Sd4) entfesselt und im zweiten zugleich ein Fluchtfeld blockt. Gut!“ (HJä). Wir sehen „saubere, fast homogene Linienthematik, die den ganzen Spielplatz einbezieht – prima!“ (RJ). „Neben den differenzierten Entfesselungen glänzt diese schöne Gemeinschaftsaufgabe mit jeweils einer weißen und zwei schwarzen Linienöffnungen“ (MRit). Ähnlich FRd: „Die Öffnung schwarz/weiß maskierter Linien mit vorgeschalteter Öffnung einer weißen Linie durch Schwarz mit Vorabentfesselung des mattsetzenden Springers, schwarzen Blocks und Mustermatts hat mich überzeugt.“ Aber auch Gegensätze ziehen sich an: „Die gefällige Zwillingsbildung führt zu analogem Spiel mit diversen Linienöffnungen und Liniensperren“ (JS), denn „trotz der drastischen Zwillingsbildung läuft alles harmonisch. Auch die Vorwegdeckungen der Felder umden schwarzen König durch 2.– Lf1, 2.– Th6 fügen sich einheitlich ein“ (VZ). Nur bei KHS hielt sich die Begeisterung in Grenzen: „wLh3 und wTh3 müssen ins Spiel gebracht werden, dazu Bivalve. Strategisch war es das auch schon für den doch recht hohen Materialeinsatz. Hm.“ Zum Vergleich Horsts Vorarbeit aus dem Jahre 1981 ohne den vorgeschalteten Bauernzug (siehe Diagramm P0544107): I) 1.Sg2 Th3 2.Lb1 Sb4#, II) 1.Tg2 Lf8 2.Sb3 Sc3#.
b) 1. ... dxe4 2. Tb2 Lf1 3. Sb6 Sc6#
18853 (Horst Böttger & Bert Kölske). I) 1.– e7 2.Te5 Th6 3.Lb8 Sb5#(MM), II) 1.– d:e4 2.Tb2 Lf1 3.Sb6 Sc6#(MM). „Die weißen Themasteine auf h3 müssen zur Deckung der Felder a6 & b6 (A) bzw. a6 (B) in Stellung gebracht werden, was hier in schöner Analogie jeweils nur durch linienräumende Züge beider Parteien erreicht werden kann: zunächst durchWeiß selbst im Anfangszug und dann durch die Züge von Schwarz, der dabei in seinem Erstzug zugleich den Mattstein (Sd4) entfesselt und im zweiten zugleich ein Fluchtfeld blockt. Gut!“ (HJä). Wir sehen „saubere, fast homogene Linienthematik, die den ganzen Spielplatz einbezieht – prima!“ (RJ). „Neben den differenzierten Entfesselungen glänzt diese schöne Gemeinschaftsaufgabe mit jeweils einer weißen und zwei schwarzen Linienöffnungen“ (MRit). Ähnlich FRd: „Die Öffnung schwarz/weiß maskierter Linien mit vorgeschalteter Öffnung einer weißen Linie durch Schwarz mit Vorabentfesselung des mattsetzenden Springers, schwarzen Blocks und Mustermatts hat mich überzeugt.“ Aber auch Gegensätze ziehen sich an: „Die gefällige Zwillingsbildung führt zu analogem Spiel mit diversen Linienöffnungen und Liniensperren“ (JS), denn „trotz der drastischen Zwillingsbildung läuft alles harmonisch. Auch die Vorwegdeckungen der Felder umden schwarzen König durch 2.– Lf1, 2.– Th6 fügen sich einheitlich ein“ (VZ). Nur bei KHS hielt sich die Begeisterung in Grenzen: „wLh3 und wTh3 müssen ins Spiel gebracht werden, dazu Bivalve. Strategisch war es das auch schon für den doch recht hohen Materialeinsatz. Hm.“ Zum Vergleich Horsts Vorarbeit aus dem Jahre 1981 ohne den vorgeschalteten Bauernzug (siehe Diagramm P0544107): I) 1.Sg2 Th3 2.Lb1 Sb4#, II) 1.Tg2 Lf8 2.Sb3 Sc3#.
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: b6q/kn6/3bP3/p1p4r/2nNp1p1/3P3R/6r1/K7
Input: Felber, Volker, 2022-09-22
Last update: Felber, Volker, 2022-09-22 more...
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: b6q/kn6/3bP3/p1p4r/2nNp1p1/3P3R/6r1/K7
Input: Felber, Volker, 2022-09-22
Last update: Felber, Volker, 2022-09-22 more...
a) 1. Dh5? patt
1. Dd5! Kg6 2. De5 Kh7,Kf7 3. Dg7#
b) 1. Dd5? Kg7!
1. Dh5! Kg7 2. Ke7 ... 3. Dh7#
Judge Valery Kirillov
1. Dd5! Kg6 2. De5 Kh7,Kf7 3. Dg7#
b) 1. Dd5? Kg7!
1. Dh5! Kg7 2. Ke7 ... 3. Dh7#
Judge Valery Kirillov
Keywords: Miniature, Aristocrat, Forsberg Twins
Genre: 3#
FEN: 5B2/3K4/5k2/8/8/8/8/7Q
Input: Rainer Staudte, 2022-10-08
Last update: Felber, Volker, 2022-11-07 more...
Genre: 3#
FEN: 5B2/3K4/5k2/8/8/8/8/7Q
Input: Rainer Staudte, 2022-10-08
Last update: Felber, Volker, 2022-11-07 more...
Keywords: Forsberg Twins, Rex solus (s)
Genre: 3#, n#
FEN: 8/3Q4/8/4k1K1/8/1N2P3/8/8
Input: Rainer Staudte, 2022-12-19
Last update: Gunter Jordan, 2022-12-19 more...
Genre: 3#, n#
FEN: 8/3Q4/8/4k1K1/8/1N2P3/8/8
Input: Rainer Staudte, 2022-12-19
Last update: Gunter Jordan, 2022-12-19 more...
* 1. ... Dd1#
a) 1. f4 Dd1+ 2. Kf2 Dh5 3. Ke3 Dd1 4. Ke4 Dh5 5. Kd5 Dd1+ 6. Kc6 Dh5 7. f5+ Dxf5 8. Kb7 Db1+ 9. Ka8 Db8#
b) 1. f4 Dd1+ 2. Kf2 Dh5 3. fxe5 Dd1 4. e6 Dh5 5. exd7 Da5 6. d8=D Dh5 7. Da8 Da5 8. Dg2+ Dg5 9. Kg1 Dxg2#
a) 1. f4 Dd1+ 2. Kf2 Dh5 3. Ke3 Dd1 4. Ke4 Dh5 5. Kd5 Dd1+ 6. Kc6 Dh5 7. f5+ Dxf5 8. Kb7 Db1+ 9. Ka8 Db8#
b) 1. f4 Dd1+ 2. Kf2 Dh5 3. fxe5 Dd1 4. e6 Dh5 5. exd7 Da5 6. d8=D Dh5 7. Da8 Da5 8. Dg2+ Dg5 9. Kg1 Dxg2#
Keywords: Antiphönix (in b), Corner mate (in a), Fata Morgana, Forsberg Twins, Maximummer, Minimal (B), Switchback (d), Promotion (D in b)
Genre: Fairies
FEN: 8/3n2b1/6k1/4p2q/8/7p/5P2/5K2
Reprints: Quartz 56, p. 941, 01/2023
Input: Gunter Jordan, 2023-03-10
Last update: Gunter Jordan, 2023-03-10 more...
Genre: Fairies
FEN: 8/3n2b1/6k1/4p2q/8/7p/5P2/5K2
Reprints: Quartz 56, p. 941, 01/2023
Input: Gunter Jordan, 2023-03-10
Last update: Gunter Jordan, 2023-03-10 more...
a) 1. Da6! b5 2. Ka1! b4 3. Ta2+ Kb3 4. Sb1! a3 5. Tb2+ axb2#
b) 1. Sd5! b5 2. Ta2+ Kb3 3. Ta3+ Kxa3 4. Lc2! b4 5. Ka1! b3 6. Lb1! b2#
b) 1. Sd5! b5 2. Ta2+ Kb3 3. Ta3+ Kxa3 4. Lc2! b4 5. Ka1! b3 6. Lb1! b2#
Keywords: Forsberg Twins, Miniature
Genre: s#
FEN: 8/8/1p6/8/p7/k1NQ4/1R6/1K6
Input: Rainer Staudte, 2023-04-30
Last update: Felber, Volker, 2023-09-22 more...
Genre: s#
FEN: 8/8/1p6/8/p7/k1NQ4/1R6/1K6
Input: Rainer Staudte, 2023-04-30
Last update: Felber, Volker, 2023-09-22 more...
a) 1. Dxg3 Th6 2. Dh3+ Txh3#
b) 1. Dxe4 Le8 2. Dc6 Lxc6#
b) 1. Dxe4 Le8 2. Dc6 Lxc6#
Keywords: Forsberg Twins, Capture key
Genre: h#
Computer test: Gustav 4.2
FEN: 5r2/8/4R1R1/6p1/2p1Pqn1/5kP1/7B/5K2
Input: Eberhard Schulze, 2023-05-12
Last update: Felber, Volker, 2023-06-23 more...
Genre: h#
Computer test: Gustav 4.2
FEN: 5r2/8/4R1R1/6p1/2p1Pqn1/5kP1/7B/5K2
Input: Eberhard Schulze, 2023-05-12
Last update: Felber, Volker, 2023-06-23 more...
87 - P1411045
Menachem Witztum
19179 Die Schwalbe 318-1, p. 747, 12/2022
(5+10) C+
h#2
b) wTe1 statt wLe1
Menachem Witztum
19179 Die Schwalbe 318-1, p. 747, 12/2022
(5+10) C+
h#2
b) wTe1 statt wLe1
a) 1. Dxe4 Sa4 2. Td5 Lc3#
b) 1. Dxc3 Sf6 2. Tc5 Te4#
19179 (Menachem Witztum). I. 1.D:e4 Sa4 2.Td5 Lc3# (MM). II. 1.D:c3 Sf6 2.Tc5 Te4#. „Für Blocksmüssen abwechselnd weiße Springer dran glauben“ (VZ), denn „nach Schlag des wS blocken sT und sD und erlauben weiße L /T-Matts.“ (JB) „Schwarz muss einen weißen Springer zur Blockbildung schlagen und beseitigt damit die Felddeckung, die Weiß unter Freilegung des Mattfeldes kompensieren muss. Gefiel mir auch ganz gut.“ (FRd) „Funktionswechsel zwischen wSc3 und wSe4, alternierendes Opfer der beiden weißen Springer im Schlüsselzug. Mehr Inhalt sehe ich nicht. Naja.“ (KHS) „Das Motiv der blockenden Springerschläge ist auch mit (dualvermeidend antikritisch) über das zweite Blockfeld hinweg führenden Themazügen schon dagewesen, doch wurde in der Vergleichsaufgabe (s.Diagr. P1411013: 1.D:e2 Sd1 2.Te4 Dc3#, 1.D:c3 Sg1 2.Td4 De2#) zugunsten der Zweispännerschaft undeines zusätzlichen Entfesselungseffektes auf das hier gewährleistete zweite Mustermatt verzichtet.“(MRit)
b) 1. Dxc3 Sf6 2. Tc5 Te4#
19179 (Menachem Witztum). I. 1.D:e4 Sa4 2.Td5 Lc3# (MM). II. 1.D:c3 Sf6 2.Tc5 Te4#. „Für Blocksmüssen abwechselnd weiße Springer dran glauben“ (VZ), denn „nach Schlag des wS blocken sT und sD und erlauben weiße L /T-Matts.“ (JB) „Schwarz muss einen weißen Springer zur Blockbildung schlagen und beseitigt damit die Felddeckung, die Weiß unter Freilegung des Mattfeldes kompensieren muss. Gefiel mir auch ganz gut.“ (FRd) „Funktionswechsel zwischen wSc3 und wSe4, alternierendes Opfer der beiden weißen Springer im Schlüsselzug. Mehr Inhalt sehe ich nicht. Naja.“ (KHS) „Das Motiv der blockenden Springerschläge ist auch mit (dualvermeidend antikritisch) über das zweite Blockfeld hinweg führenden Themazügen schon dagewesen, doch wurde in der Vergleichsaufgabe (s.Diagr. P1411013: 1.D:e2 Sd1 2.Te4 Dc3#, 1.D:c3 Sg1 2.Td4 De2#) zugunsten der Zweispännerschaft undeines zusätzlichen Entfesselungseffektes auf das hier gewährleistete zweite Mustermatt verzichtet.“(MRit)
Keywords: Forsberg Twins
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/5p2/2q5/1r6/3kN1pp/pPNp2r1/5K2/4Bn2
Input: Felber, Volker, 2023-07-21
Last update: Felber, Volker, 2023-07-22 more...
Genre: h#
Computer test: Popeye WINDOWS98-32Bit-Version 3.77 (8192KB)
FEN: 8/5p2/2q5/1r6/3kN1pp/pPNp2r1/5K2/4Bn2
Input: Felber, Volker, 2023-07-21
Last update: Felber, Volker, 2023-07-22 more...
88 - P1414041
Eckart Kummer
Achim Schöneberg
8192 Sachova skladba 92, p. 2155, 07/2006
2. Preis
(3+9)
h#3,5
b) wLb5
Eckart Kummer
Achim Schöneberg
8192 Sachova skladba 92, p. 2155, 07/2006
2. Preis
(3+9)
h#3,5
b) wLb5
a) 1. ... Txc5 2. d6 Tc6 3. Kd5 Tb6 4. Kc5 Tb5#
b) 1. ... Lxc4 2. d5 Lb3 3. Kd3 La4 4. Kc4 Lb5#
Mattzüge auf das gleiche Feld.
b) 1. ... Lxc4 2. d5 Lb3 3. Kd3 La4 4. Kc4 Lb5#
Mattzüge auf das gleiche Feld.
Keywords: Round Trip (T und L), Kniest Theme, Forsberg Twins, x pieces move to one square
Genre: h#
Computer test: C+ Popeye 4.89
FEN: rr6/Np1p4/8/1Rp5/2ppk3/K1p5/8/8
Input: Achim Schöneberg, 2023-12-12
Last update: Gunter Jordan, 2023-12-13 more...
Genre: h#
Computer test: C+ Popeye 4.89
FEN: rr6/Np1p4/8/1Rp5/2ppk3/K1p5/8/8
Input: Achim Schöneberg, 2023-12-12
Last update: Gunter Jordan, 2023-12-13 more...
89 - P1414126
Kevin James Begley
F1347 Problem Paradise 102 2023/04
6. Lob
(4+4)
h#2
b) wRc6 statt wBc6
c) wRc6 statt wSc6
wSU=Psycho-Springer
Kevin James Begley
F1347 Problem Paradise 102 2023/04
6. Lob
(4+4)
h#2
b) wRc6 statt wBc6
c) wRc6 statt wSc6
wSU=Psycho-Springer
a) 1.Kd4 pSf1(=pB) 2.Kd5 pBf3(=pR)#
b) 1.Ke3 pSf1(=pB)+ 2.Ke2 Bb5#
c) 1.Kc4 Sb4 2.Kc3 pSe4(=pB)#
Henrik Juel: Die Schwalbe Märchenschachlexikon says
Psycho: A rotating combination of Rook, Bishop and Knight, which continually surrenders (temporarily) the power last used. Thus, there are three distinct Psycho pieces (separate pieces, not merely states, for Madrasi/Isardam purposes): Psycho-Rook (PR): B+S powers (not R) - last move was orthogonal. Psycho-Bishop (PB): R+S powers (not B) - last move was diagonal. Psycho-Knight (PS): R+B powers (not S) - last move was (2:1) leap. Upon moving, psychos immediately change into: PR after moving orthogonally, PB after moving diagonally, PS after leap. Psychos may not be used for castling. (e.g., Upon moving as Rook, a psycho-Bishop becomes a psycho-Rook, which has the powers of Bishop and Knight: pBa1-a8=pR.) Castling with a psycho is not legal. When any form of psycho is present, promotions to all forms of psycho are allowed. (2023-12-22)
Kevin Begley: FYI: The game of the psycho-Queen (a fairy condition using these units) starts with a psycho-Queen (which starts with all three powers: Rook, Bishop, and Knight, but upon moving it descends into one of the three psycho units described above (psycho-Rook, psycho-Bishop, or psycho-Knight). It can be played on an 8x8 board, though intended for a special board (8 ranks, 10 files, remove the corner squares) inspired by Frank Vigor Morley's "My One Contribution to Chess). There are various pawn promotion options, but I now favor promotion on the last square of the file (7th rank for pawns on an edge file) to psycho-Queen, Rook, Bishop, Knight (but NOT to psycho-Rook, psycho-Bishop, or psycho-Knight). (2023-12-22)
comment
Psycho: A rotating combination of Rook, Bishop and Knight, which continually surrenders (temporarily) the power last used. Thus, there are three distinct Psycho pieces (separate pieces, not merely states, for Madrasi/Isardam purposes): Psycho-Rook (PR): B+S powers (not R) - last move was orthogonal. Psycho-Bishop (PB): R+S powers (not B) - last move was diagonal. Psycho-Knight (PS): R+B powers (not S) - last move was (2:1) leap. Upon moving, psychos immediately change into: PR after moving orthogonally, PB after moving diagonally, PS after leap. Psychos may not be used for castling. (e.g., Upon moving as Rook, a psycho-Bishop becomes a psycho-Rook, which has the powers of Bishop and Knight: pBa1-a8=pR.) Castling with a psycho is not legal. When any form of psycho is present, promotions to all forms of psycho are allowed. (2023-12-22)
Kevin Begley: FYI: The game of the psycho-Queen (a fairy condition using these units) starts with a psycho-Queen (which starts with all three powers: Rook, Bishop, and Knight, but upon moving it descends into one of the three psycho units described above (psycho-Rook, psycho-Bishop, or psycho-Knight). It can be played on an 8x8 board, though intended for a special board (8 ranks, 10 files, remove the corner squares) inspired by Frank Vigor Morley's "My One Contribution to Chess). There are various pawn promotion options, but I now favor promotion on the last square of the file (7th rank for pawns on an edge file) to psycho-Queen, Rook, Bishop, Knight (but NOT to psycho-Rook, psycho-Bishop, or psycho-Knight). (2023-12-22)
comment
Keywords: Forsberg Twins, Model mate
Genre: Fairies
FEN: 8/1p6/1PR5/8/8/3k2p1/K5*2N1/7n
Input: Kevin Begley, 2023-12-22
Last update: Kevin Begley, 2023-12-22 more...
Genre: Fairies
FEN: 8/1p6/1PR5/8/8/3k2p1/K5*2N1/7n
Input: Kevin Begley, 2023-12-22
Last update: Kevin Begley, 2023-12-22 more...
90 - P1415229
Claus Grupen
Andreas Thoma
2015/60 Schach in Schleswig-Holstein 11/2015
2. ehrende Erwähnung
(2+5) C+
h#6
b) sLc2
Claus Grupen
Andreas Thoma
2015/60 Schach in Schleswig-Holstein 11/2015
2. ehrende Erwähnung
(2+5) C+
h#6
b) sLc2
a) 1. c1=L h4 2. Tg2 h5 3. Tg6 h6 4. Lg5 h7 5. Kg7 Kb2 6. Kh6 h8=D#
b) 1. Lg6 h4 2. Tf2 h5 3. Tf7 Kb2 4. a1=T hxg6 5. Th1 gxf7 6. Th7 f8=D#
b) 1. Lg6 h4 2. Tf2 h5 3. Tf7 Kb2 4. a1=T hxg6 5. Th1 gxf7 6. Th7 f8=D#
Keywords: corner to corner (t in b), Corner mate (in b), Entblockung, Excelsior white, Remote selfblock (2-fach in a), Forsberg Twins, konsekutive Umwandlungen 2 (lD,tD), Line opening, Minimal (B), Model mate, Selfblock (in b), Tempo Loss (in a), Tschumakow Theme, Promotion (D), Promotion in the mating move, under-promotion (l,t), under-promotion key (in a), Miniature
Genre: h#
Computer test: Gustav 4.1 a
FEN: 7k/8/8/8/8/1p6/prp4P/K7
Input: Gunter Jordan, 2024-02-21
Last update: Gunter Jordan, 2024-02-21 more...
Genre: h#
Computer test: Gustav 4.1 a
FEN: 7k/8/8/8/8/1p6/prp4P/K7
Input: Gunter Jordan, 2024-02-21
Last update: Gunter Jordan, 2024-02-21 more...
a) 1. Sb4! Ka4 2. Td5! Kb3 3. Tc5! Ka4 4. Sd3! Kb3 5. Sb2 axb2#
b) 1. a7 Kc2 2. a8=D! Kc1,Kb3 3. Da5! Kc2 4. Dd2+ Kb3 5. Db2+ axb2#
b) 1. a7 Kc2 2. a8=D! Kc1,Kb3 3. Da5! Kc2 4. Dd2+ Kb3 5. Db2+ axb2#
Keywords: Forsberg Twins, Change of Sacrifices (D-S), Miniature, Promotion (D in b), Antiphönix (in b), Pawn mate, Corner mate, Model mate, Switchback (k)
Genre: s#
FEN: 8/8/N7/8/3R4/pk6/p7/K3B3
Input: Rainer Staudte, 2024-03-25
Last update: Rainer Staudte, 2024-03-25 more...
Genre: s#
FEN: 8/8/N7/8/3R4/pk6/p7/K3B3
Input: Rainer Staudte, 2024-03-25
Last update: Rainer Staudte, 2024-03-25 more...
a) 1. Lc4! Kc2 2. De5 Kd2 3. Dd4+ Kc2 4. Lb3+ axb3#
b) 1. Sc5! Kc2 2. Df3 Kd2 3. Se4+ Kc2 4. Db3+ axb3#
b) 1. Sc5! Kc2 2. Df3 Kd2 3. Se4+ Kc2 4. Db3+ axb3#
Keywords: Forsberg Twins, Change of Sacrifices (D-L), Minimal (b)
Genre: s#
FEN: 8/8/B7/3Q4/p7/P1k5/K7/R7
Input: Rainer Staudte, 2024-03-25
Last update: Rainer Staudte, 2024-03-25 more...
Genre: s#
FEN: 8/8/B7/3Q4/p7/P1k5/K7/R7
Input: Rainer Staudte, 2024-03-25
Last update: Rainer Staudte, 2024-03-25 more...
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The problems of this query have been registered by the following contributors:
Gerd Wilts (6)Selbstmatt-Miniaturen/Reflexmatt-Miniaturen (7)
Frank Müller (8)
Zuncke/Bruder (22)
Felber, Volker (21)
Erich Bartel (1)
TLi (2)
Gunter Jordan (6)
HBae (1)
Marcin Banaszek (3)
James Malcom (1)
A.Buchanan (1)
Rainer Staudte (7)
Die Schwalbe (1)
hpr (2)
Eberhard Schulze (1)
Achim Schöneberg (1)
Kevin Begley (1)
Erich Bartel: weitere Nachdrucke:
13) 197 moving on 2008.---
14) Naef:Endspielstudien Hilfmattprobleme und Märchenschachaufgaben 1998,S.72.--- (2008-10-01)
Jacques Rotenberg: 5982, CHM 1995, G. Lestriguel
p.1315, Le Guide des Echecs 1993
5 p.8, The Modern Helpmate in Two, Z. Janevski & N. Stolev 1989
XIII p.151, Thèmes-64 10 (avr. 58)
XII bis p.38, Rex Multiplex 2 (avr. 82)
285, Svenska Miniatyrer I, A.Uddgren & A. Hildebrand 1996
p.76, Im Wunderland des Schachproblems, E. Ramin 1958
E-1 p.236, StrateGems 12 (oct. 00)
I33 p.1333, Phénix 14 (sept. 91)
3 p.219, Le Genre Aidé Supplément diagrammes 15 (juin 75)
161 p.241, Echecs, N. Ramini 1985
E p.14, Best Problems 21 (jan. 02)
259 p.238, Chess Problems : Introduction to an Art, M. Lipton, R.C.O. Matthews, J. Rice 1963
139, Skakopgaven 1942
135 p.31, Album FIDE 1914-44/III
9 p.403, feenschach 26 (déc. 74)
40 p.61, Europe Echecs 330 (juin 86)
p.185, feenschach 47 (juil. 79)
in WinChloe, you find also :
A p.5, Springaren 17 (mars 84)
p.50, feenschach 73 (jan. 85)
M p.171, The Problemist (sept. 81)
p.415, feenschach 97 (nov. 90)
133 p.104, Solving in Style, J. Nunn 1985
E-I p.43, Probleemblad 58/1 (jan. 00)
E-1 p.102, Probleemblad 58/3 (mai 00)
p.136, Springaren 70 (août 97)
4 p.4424, diagrammes 159 (oct. 06)
p.37, Problem-Forum 36 (déc. 08) (2012-03-10)
A.Buchanan: The position is unique (except for left-right reflection). In particular, it cannot be shifted up or down without breaking (b) and only the current location of wK makes (b) sound and (a)&(d) solvable. (2017-01-27)
Anton Baumann: in Revista de Sah 1936 soll Henry Forsberg eine weitere Möglichkeit gezeigt haben:
f) wSa6 statt sDa6: 1.Ka2 Sac5 2.Ka3 Ta4# (C+)
Ferner mit Märchenschachfiguren: vergl. P1349128 (2022-12-28)
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