10 problem(s) found in 4508 milliseconds (displaying 10 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT K='Scherzaufgabe' AND A='Keeble, John Frederick'] [download as LaTeX]
1 - P0003417
John Frederick Keeble
2206 The Problemist Fairy Chess Supplement 16, p. 173, 02/1936
(4+5) C+
h#2.5 (AP)
John Frederick Keeble
2206 The Problemist Fairy Chess Supplement 16, p. 173, 02/1936
(4+5) C+
h#2.5 (AP)
1. ... exd6ep 2. 0-0-0 dxe7+ 3. Tf8 exf8=T,D#
H.Juel: If Black may castle, last move was not made by Ke8 or Ta8, but by Pd5, so it was d7-d5, and hence White may capture en passant. 1... exd6ep 2.0-0-0 dxe7 3.Tf8 exf8=D,T# where the castling (belatedly) justifies the e.p. capture.
Not 1... exd6ep 2.Kd8? dxe7 3.Kc8 e8=D,T
AB: Another 120 retro tries (=60x2 due to tolerated dual promotion) of general form 1. exd6ep 2. T~ dxc7 3. T~ c8=D,T.
No set play
H.Juel: If Black may castle, last move was not made by Ke8 or Ta8, but by Pd5, so it was d7-d5, and hence White may capture en passant. 1... exd6ep 2.0-0-0 dxe7 3.Tf8 exf8=D,T# where the castling (belatedly) justifies the e.p. capture.
Not 1... exd6ep 2.Kd8? dxe7 3.Kc8 e8=D,T
AB: Another 120 retro tries (=60x2 due to tolerated dual promotion) of general form 1. exd6ep 2. T~ dxc7 3. T~ c8=D,T.
No set play
Keywords: a posteriori (AP) (Type Petrovic), En passant as key, Castling (sg), Promotion (D/T), Tolerated dual promotion (D/T), Valladao Task, Retro Strategy (RS)
Genre: h#, Retro
Computer test: Popeye 4.61
FEN: r3k3/2p1p3/2P1P3/2KpP3/8/8/8/8
Reprints: V. Die Schwalbe 33, p. 323, 06/1975
2001 CHM Themes 12/2000
3 Die Schwalbe 215, p. 240, 10/2005
A1 Problemkiste 169 02/2007
402 Eigenartige Schachprobleme , p. 130, 2010
14 Die Schwalbe 241, p. 374, 02/2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-06-10 more...
Genre: h#, Retro
Computer test: Popeye 4.61
FEN: r3k3/2p1p3/2P1P3/2KpP3/8/8/8/8
Reprints: V. Die Schwalbe 33, p. 323, 06/1975
2001 CHM Themes 12/2000
3 Die Schwalbe 215, p. 240, 10/2005
A1 Problemkiste 169 02/2007
402 Eigenartige Schachprobleme , p. 130, 2010
14 Die Schwalbe 241, p. 374, 02/2010
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2022-06-10 more...
1. Sb3! droht 2. Dc4+ Kxf3 3. Dd3+ Lxd3#
1. ... Lh5 2. T3xf4+ exf4 3. De2+ Lxe2#
1. ... Lf7 2. Te3+ fxe3 3. Dc4+ Lxc4#
1. ... Le8 2. Sd2+ Kd4 3. Db4+ Sxb4#
1. ... Lh5 2. T3xf4+ exf4 3. De2+ Lxe2#
1. ... Lf7 2. Te3+ fxe3 3. Dc4+ Lxc4#
1. ... Le8 2. Sd2+ Kd4 3. Db4+ Sxb4#
SCHRECKE: C+, popeye 4.87
1.Sb3! (2.Dc4+ K:f3 3.Dd3+ L:d3#)
1. ... Lh5 2.T3:f4+ e:f4 3.De2+ L:e2#
1. ... Lf7 2.Te3+ f:e3 3.Dc4+ L:c4#
1. ... Le8 2.Sd2+ Kd4 3.Db4+ S:b4# (2021-09-09)
comment
1.Sb3! (2.Dc4+ K:f3 3.Dd3+ L:d3#)
1. ... Lh5 2.T3:f4+ e:f4 3.De2+ L:e2#
1. ... Lf7 2.Te3+ f:e3 3.Dc4+ L:c4#
1. ... Le8 2.Sd2+ Kd4 3.Db4+ S:b4# (2021-09-09)
comment
Keywords: Brian Stephenson Collection (4043)
Genre: s#
FEN: 8/PBp1N3/K1n2Rb1/PQ2p3/3Nkp2/5R1P/5Pp1/6B1
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-09-13 more...
Genre: s#
FEN: 8/PBp1N3/K1n2Rb1/PQ2p3/3Nkp2/5R1P/5Pp1/6B1
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-09-13 more...
1. Tc6! droht 2. Dg5+ e5 3. Dd2+ Sfxd2#
1. ... Sfe3 2. Dd1+ Sxd1 3. Sc3+ Sxc3#
1. ... Sg3 2. De4+ Sxe4 3. Sc3+ Sxc3#
1. ... e5 2. Dg2+ e4 3. Dd2+ Sfxd2#
1. ... Sfe3 2. Dd1+ Sxd1 3. Sc3+ Sxc3#
1. ... Sg3 2. De4+ Sxe4 3. Sc3+ Sxc3#
1. ... e5 2. Dg2+ e4 3. Dd2+ Sfxd2#
SCHRECKE: C+, popeye 4.85
1.Tc6! (2.Dg5+ e5 3.Dd2+ Sf:d2#)
1. ... Sfe3 2.Dd1+ S:d1 3.Sc3+ S:c3#
1. ... Sg3 2.De4+ S:e4 3.Sc3+ S:c3#
1. ... e5 2.Dg2+ e4 3.Dd2+ Sf:d2# (2020-11-03)
comment
1.Tc6! (2.Dg5+ e5 3.Dd2+ Sf:d2#)
1. ... Sfe3 2.Dd1+ S:d1 3.Sc3+ S:c3#
1. ... Sg3 2.De4+ S:e4 3.Sc3+ S:c3#
1. ... e5 2.Dg2+ e4 3.Dd2+ Sf:d2# (2020-11-03)
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Keywords: Brian Stephenson Collection (4048)
Genre: s#
FEN: 1B6/4p3/4R3/1P1k4/N1n3QR/8/BpN4p/1K3n2
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2020-11-07 more...
Genre: s#
FEN: 1B6/4p3/4R3/1P1k4/N1n3QR/8/BpN4p/1K3n2
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2020-11-07 more...
BS Problemid: 4082
Authors: Keeble, John F
Sources: Les Mille et un Mats Inverses 1907
Years: 1903
SCHRECKE: 1.Tb2!
1. ... L:b2 2.Ld4 ~ 3.Dg6+ h:g6#
1. ... T:b2 2.Lf2 ~ 3.Dg6+ h:g6#
1. ... Lg2 2.Lc7 ~ 3.Dg6+ h:g6#
1. ... f2 2.Dd3+ Le4 3.Df3+ L:f3#
1. ... a:b2 2.Lf7,La5 ...
8 Nebenlösungen: 1.Lg1, 1.Lf2, 1.Ld4, 1.Lc5, 1.La7, 1.La5, 1.Lc7, 1.Ld8
z.B.: 1.Ld8 Lf6 2.Te5+ L:e5 3.Dg6+ h:g6#
1. ... Tg2 2.Lc2+ T:c2 3.Dg6+ h:g6# (2021-07-07)
comment
1. ... L:b2 2.Ld4 ~ 3.Dg6+ h:g6#
1. ... T:b2 2.Lf2 ~ 3.Dg6+ h:g6#
1. ... Lg2 2.Lc7 ~ 3.Dg6+ h:g6#
1. ... f2 2.Dd3+ Le4 3.Df3+ L:f3#
1. ... a:b2 2.Lf7,La5 ...
8 Nebenlösungen: 1.Lg1, 1.Lf2, 1.Ld4, 1.Lc5, 1.La7, 1.La5, 1.Lc7, 1.Ld8
z.B.: 1.Ld8 Lf6 2.Te5+ L:e5 3.Dg6+ h:g6#
1. ... Tg2 2.Lc2+ T:c2 3.Dg6+ h:g6# (2021-07-07)
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Keywords: Brian Stephenson Collection (4082)
Genre: s#
FEN: 8/3N3p/QB5P/5k1K/7P/pB3p1N/r7/bR2R2b
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2015-01-14 more...
Genre: s#
FEN: 8/3N3p/QB5P/5k1K/7P/pB3p1N/r7/bR2R2b
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Frank Müller, 2015-01-14 more...
BS Problemid: 4091
Authors: Keeble, John F
Sources: Les Mille et un Mats Inverses 1907
Years: 1904
SCHRECKE: C+, popeye 4.85
1.Tb7! (Zugzwang)
1. ... f3 2.Tc7 Le4/Ld5/Lc6/Lb7 3.S:e4/S:d5/T:c6/T:b7 f:e2#
1. ... L:b7 2.D:b7+ f3 3.Dg7 f:e2# (2021-06-25)
comment
1.Tb7! (Zugzwang)
1. ... f3 2.Tc7 Le4/Ld5/Lc6/Lb7 3.S:e4/S:d5/T:c6/T:b7 f:e2#
1. ... L:b7 2.D:b7+ f3 3.Dg7 f:e2# (2021-06-25)
comment
Keywords: Brian Stephenson Collection (4091)
Genre: s#
Computer test: popeye 4.85
FEN: b7/p3R1Q1/P4N2/8/5p2/8/2PpPp1p/3KbRnk
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-06-29 more...
Genre: s#
Computer test: popeye 4.85
FEN: b7/p3R1Q1/P4N2/8/5p2/8/2PpPp1p/3KbRnk
Reprints: Les Mille et un Mats Inverses 1907
Input: Brian Stephenson, 2004-08-12
Last update: Marcin Banaszek, 2021-06-29 more...
1. Te7! f3 2. Sxe5+ Ke3 3. Sg4+ Kd3 4. Dxd2+ Dxd2#
1. ... Db8 2. Sxe5+ Dxe5 3. Df3+ De3 4. Tb7 c3 5. Tb3 Dxf3#
1. ... Db5 2. Sxe5+ Ke3 3. Sxc4+ Kd3 4. Scb2+ Dxb2 5. Dxd2+ Dxd2#
1. ... c3 2. Sc5+ Kc4 3. De2+ d3 4. Sxe5+ Kd4 5. Sb3+ Dxb3#
Cook: Dual: 1. ... Db8 2. Sf2+ Ke3 3. Txe5+ Dxe5 4. Sg4+ Kd3 5. De2+ Dxe2#
1. ... Db8 2. Sxe5+ Dxe5 3. Df3+ De3 4. Tb7 c3 5. Tb3 Dxf3#
1. ... Db5 2. Sxe5+ Ke3 3. Sxc4+ Kd3 4. Scb2+ Dxb2 5. Dxd2+ Dxd2#
1. ... c3 2. Sc5+ Kc4 3. De2+ d3 4. Sxe5+ Kd4 5. Sb3+ Dxb3#
Cook: Dual: 1. ... Db8 2. Sf2+ Ke3 3. Txe5+ Dxe5 4. Sg4+ Kd3 5. De2+ Dxe2#
Genre: s#
FEN: 2R1B3/7R/8/p2pb3/N1pp1pN1/P2k4/1q1p2Q1/B2K4
Reprints: 703 Les Mille et un Mats Inverses 1907
Input: HBae, 2009-02-06
Last update: Marcin Banaszek, 2021-05-19 more...
1. Dh8-h1!
Alfred Pfeiffer: Sind John Friedrich Keeble und John Frederick Keeble die selbe Person? (2016-05-25)
Gerald Ettl: Ich kenne auch nur John Frederick Keeble. Vermutlich ist Friedrich die deutsche Fassung. (Passt auch gar nich zu greatbritain) Wer belehrt mich eines Besseren? (2016-05-25)
A.Buchanan: Yes this is surely the same guy, publishing in same magazines at same time. Sometimes, two similar names are due to father & son. But as Gerald says here it's just a German representation of an English forename. I will fix it now. (2021-10-09)
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Gerald Ettl: Ich kenne auch nur John Frederick Keeble. Vermutlich ist Friedrich die deutsche Fassung. (Passt auch gar nich zu greatbritain) Wer belehrt mich eines Besseren? (2016-05-25)
A.Buchanan: Yes this is surely the same guy, publishing in same magazines at same time. Sometimes, two similar names are due to father & son. But as Gerald says here it's just a German representation of an English forename. I will fix it now. (2021-10-09)
more ...
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Genre: 2#
Computer test: C+ Popeye 4.61
FEN: r1b1N2Q/p1BN4/kb6/2R5/P1p5/6p1/6B1/6K1
Input: Felber, Volker, 2011-11-08
Last update: A.Buchanan, 2021-10-10 more...
oder Globe Democrat
Damals wurde die Figur Chancelor (Kanzler) genannt
Anton Baumann: 1.KAe4! Zzw.
1. ... L~ 2.KAxe3#
1. ... Lc1 2.KAxc3#
1. ... e2 2.KAxd2#
1. ... Sa~ 2.KAxc5#
1. ... Sc~ 2.KAe7#
1. ... Sxd6+ 2.KAxd6#
1. ... f4 2.KAxg5#
1. ... fxe4 2.c4#
1. ... Kxe4 2.Lc6#
abgesehen vom Dual minor nach 1.-Lc3 C+ (Alybadix) (2023-09-09)
comment
Damals wurde die Figur Chancelor (Kanzler) genannt
Anton Baumann: 1.KAe4! Zzw.
1. ... L~ 2.KAxe3#
1. ... Lc1 2.KAxc3#
1. ... e2 2.KAxd2#
1. ... Sa~ 2.KAxc5#
1. ... Sc~ 2.KAe7#
1. ... Sxd6+ 2.KAxd6#
1. ... f4 2.KAxg5#
1. ... fxe4 2.c4#
1. ... Kxe4 2.Lc6#
abgesehen vom Dual minor nach 1.-Lc3 C+ (Alybadix) (2023-09-09)
comment
1. TSxc3 Ka7 2. TSb5+ Ka6 3. Sxc4 Sg3#
Auf c2 soll wohl eine Kombinatiosfigur T+S stehen. Originalnotation Ros
Anton Baumann: T+S = Empress (Kaiserin)
1.TSxc3 droht 2.TSxc4+ Ka6 3.Te7 Sg3#
2. ... Kb7 3.TSc8 Sg3#
2. ... Ka7 3.TSb2,TSb4,TSd6 Sg3#
1. ... Ka5 2.TSb5+ Kxa4/Ka6 3.Te4/Sxc4 Sg3#
1. ... Ka7? widerlegt die Drohung nicht: 2.TSxc4, TSb5+ (2023-11-04)
comment
Anton Baumann: T+S = Empress (Kaiserin)
1.TSxc3 droht 2.TSxc4+ Ka6 3.Te7 Sg3#
2. ... Kb7 3.TSc8 Sg3#
2. ... Ka7 3.TSb2,TSb4,TSd6 Sg3#
1. ... Ka5 2.TSb5+ Kxa4/Ka6 3.Te4/Sxc4 Sg3#
1. ... Ka7? widerlegt die Drohung nicht: 2.TSxc4, TSb5+ (2023-11-04)
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Genre: Fairies
FEN: 4R3/8/1k6/8/P1p5/N1p1p3/2*2N1BpP1/5K1n
Input: Frank Müller, 2015-02-22
Last update: Frank Müller, 2015-02-22 more...
1. g3! (Zugzwang)
1. ... Sc3+ 2. Sxc3#
1. ... Sa3 2. Sc3#
1. ... Sxg3+ 2. Sxg3#
1. ... Sc3+ 2. Sxc3#
1. ... Sa3 2. Sc3#
1. ... Sxg3+ 2. Sxg3#
Keywords: Symmetrical position, Asymmetrical solution
Genre: 2#
Computer test: SCHRECKE: C+, popeye 4.85 (2021-04-29
FEN: 8/8/8/4p3/2P1k1P1/4B3/2PpKpP1/1n1NbN1n
Reprints: 23 Panorama (Leiden) 06/05/1925
70 Asymmetry 1927
Input: Mario Richter, 2021-04-29
Last update: Erich Bartel, 2021-04-29 more...
Genre: 2#
Computer test: SCHRECKE: C+, popeye 4.85 (2021-04-29
FEN: 8/8/8/4p3/2P1k1P1/4B3/2PpKpP1/1n1NbN1n
Reprints: 23 Panorama (Leiden) 06/05/1925
70 Asymmetry 1927
Input: Mario Richter, 2021-04-29
Last update: Erich Bartel, 2021-04-29 more...
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The problems of this query have been registered by the following contributors:
Gerd Wilts (1)Brian Stephenson (4)
HBae (1)
Felber, Volker (1)
Frank Müller (2)
Mario Richter (1)
VL: The first AP-problem! Thematic illegal try:
1. ... exd6ep 2.Kd8? dxe7+ 3.Kc8 e8=T(D)#?? (2007-02-11)
Mario Richter: 46 years between this Problem and P1366663 - perhaps this was not Keeble's first AP-Problem?! (2019-08-29)
Ladislav Packa: Of course I know the idea a posteriori. But let my heresy be forgiven - I do not consider it logical. In this particular example, I consider e.p. for proof that black can castling - not vice versa. (2019-08-29)
A.Buchanan: Hi Ladislav. If ep is ok, then Black just moved a pawn with double hop. That doesn't stop Black having e.g. moved bK right at the beginning of the game. So you can't prove that Black definitely can castle this way. What am I missing here? (2019-08-29)
Ladislav Packa: Your statement is perfectly fine. However, the AP condition is usually interpreted as castling is evidence of e.p. However, the second party does not have to do castling - the possibility has already been demonstrated by the existence of e.p. (2019-08-29)
A.Buchanan: Hi again Ladislav. Please try again, I am obviously being very stupid. I don't understand how 1. exd6ep is any more indicative that Black can castle than 1. K~. (2019-08-30)
Ladislav Packa: Hi, Andre!
e.p. is just a result of the d7-d5 move. Black can castle only if it was the last move of black (even without wPe5). Therefore, it does not have the logic of joining the e.p. with castling. For example, ask yourself if black is allowed to castle in the position without wPe5. (2019-08-30)
A.Buchanan: @Ladislav: ep is not "proof that black can castle", rather it is a *necessary* condition for Black to be able to castle. The logical implication is the other way round. We can castle because of the optimistic convention, and because sPd might just have moved. Without wPe, there is no solution, but whatever White plays, Black can castle (2020-12-11)
Hans-Jürgen Manthey: was heißt hier Thematisch Illegal ??
Mir völlig wurscht ob ep möglich oder nicht, nach dem weißen Zug ist natürlich Kd8 möglich !!
also ist auch 1. ... exd6ep 2. Kd8 dxe7+ 3. Kc8 e8DT# eine Lösung, sonst müßte auf die erzwungende Rochade in der Aufgabenstellung hingewiesen werden ! (2020-12-11)
A.Buchanan: Can one tolerate “tolerated dual promotion” in Valladao? Well Valladao himself did, so it must be ok (2022-03-26)
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