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5 problem(s) found in 6951 milliseconds (displaying 5 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND NOT S='Problem Paradise' AND K='Synthetisches Problem'] [download as LaTeX]

1 - P0005353
John A. Lewis
5141 The Fairy Chess Review 17 04/1942
P0005353
(16+16)
Play a game in which no knight attacks another, White captures QB, and ends with 5. ... Black S capturing unmoved R, mate
1. Sc3 Sh6 2. Sd5 Sg4 3. Sxe7 Sxf2 4. Sxc8 Dh4 5. g4 Sxh1
play all play one stop play next play all
Henrik Juel: "Play a game with S's" does not fit well with 4... Dh4 5.g4 (2020-12-23)
A.Buchanan: I think it's simply a constraint whereby knights can't attack one another. There is no requirement to actually move any horsies. I will remove an errant comma from the stip. I am not a fan of synthetics, have to say (2020-12-23)
comment
Keywords: Synthetic problem
Genre: Retro
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-12-23 more...
2 - P0005367
Ted Brandhorst
3500 British Chess Magazine 12/1973
P0005367
(0+0)
BP in which both sides get their pieces all on squares of the same colour?
(AL: 12,5)
1. a3 a5 2. c3 b6 3. d4 d6 4. e3 e5 5. f4 f6 6. g3 g5 7. h4 h6 8. Sd2 Ta7 9. Kf2 Lg7 10. De1 Kf8 11. Lh3 Lxh3 12. Txh3 Se7 13. Th2
play all play one stop play next play all
Hauke Reddmann: Beim Vorfuehren (im Club vor voellig problemunerfahrenen
Patznasen) kam einer auf
folgende Idee:

1.c3 e5 2.a3 Bxa3 3.Nxa3 a5 4.e3 b6 5.f4 d6 6.g3
Ne7 7.h4 f6 8.Bh3 Bxh3 9.Rxh3 Ra7 10.Rh2 Kf8 11.Kf2 h6 12.Qe1

2 Halbzüge gespart! (2002-11-19)
Ryan McCracken: It's possible to do this faster with a good capturing scheme:
1.e3 d6 2.Ba6 Bh3 3.Bxb7 Bxg2 4.Bxa8 Bxh1 5.Be4 Bf3 6.Bxh7 Bxd1 7.Bxg8 Bxc2 8.Nc3 Bb3 9.Bxf7+ Kxf7 10.axb3 Kf6 11.b4 reaching a monochrome position in a mere 10.5 moves. (2004-10-01)
A.Buchanan: I don't think this "cooked". It's not even unsound: just the author's effort to solve a synthetic challenge, and twice the solution has been superseded, that's all. (2020-11-03)
comment
Keywords: Synthetic problem, Superseded by (P1381496), Non-Unique Proof Game, Ornament
Genre: Retro
FEN: 8/8/8/8/8/8/8/8
Input: Gerd Wilts, 1995-06-03
Last update: A.Buchanan, 2020-11-04 more...
3 - P1347219
François Labelle
RIFACE 2017
3. Lob
P1347219
(16+16) C+
Move a black rook to c2 in 6 moves
Längstzüger
Schwarzer Ohneschlag
1. c4 Sc6 2. Dc2 Sd4 3. Dxh7 Sb5 4. Dh4 Th5 5. cxb5 Tc5 6. Dg5 Tc2
play all play one stop play next play all
Joost de Heer: 1. c4 Sc6 2. Qc2 Sd4 3. Qh7 Sb5 4. Qh4 Rh5 5. cxb5 Rc5 6. Qg5 Rc2 (2021-01-04)
comment
Keywords: Synthetic problem, No-capture chess (s), Maximummer, RIFACE Retro Composition Tourney (2017), Homebase
Genre: Retro, Fairies
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Reprints: Phénix 279-280, p. 10968, 11-12/2017
Input: A.Buchanan, 2018-02-24
Last update: James Malcom, 2023-07-04 more...
4 - P1381496
Ryan McCracken
PDB Website 01/10/2004
P1381496
(0+0)
BP in which both sides get their pieces all on squares of the same colour?
1. e3 d6 2. La6 Lh3 3. Lxb7 Lxg2 4. Lxa8 Lxh1 5. Le4 Lf3 6. Lxh7 Lxd1 7. Lxg8 Lxc2 8. Sc3 Lb3 9. Lxf7+ Kxf7 10. axb3 Kf6 11. b4
play all play one stop play next play all
A.Buchanan: Improves on P0005367 (2020-11-03)
comment
Keywords: Synthetic problem, Non-Unique Proof Game, Ornament, Superseded by (P1381525)
Genre: Retro
FEN: 8/8/8/8/8/8/8/8
Input: A.Buchanan, 2020-11-03
Last update: A.Buchanan, 2020-11-04 more...
5 - P1386410
Andrew Buchanan
chess.stackexchange.com 11/02/2021
P1386410
(16+16)
Find a diagram which can recur a maximum number of times, such that it also has a unique KBP (shortest proof game) to its first occurrence.
a) with 3-fold repetition & 50-move rules
b) with 5-fold repetition & 75-move rules
a) e.g. 1. a4 e5 2. a5 e4 3. a6 Sxa6 4. f4
b) e.g. 1. e3 a5 2. La6 e6 3. Se2
play all play one stop play next play all
a) 22 occurrences possible, with 44.5 moves, so no issue with 50-move rule even if it were mandatory.
b) 37 occurrences possible, with 74.0 moves + 0.5 for 3. Se2 in proof game.
The theoretical maximum of 42 is impossible, because it would take 84.5 moves, breaching the mandatory 75-move rule.
Other shortest unique SPGs are possible, but need:
(1) both sides have at least 2 of K,R & R able to move.
(2) both sides must have officer to triangulate.
(3) (for player on the move) triangulating officer must be B or Q.
(4) (for 3+50 case only) e.p. set up.
A.Buchanan: Without German KBP in the stip the animation won't work (2021-02-12)
comment
Keywords: Construction task (non-unique), Synthetic problem, 50 move rule, 75 move rule, Draw by repetition, En passant, Castling, Homebase
Genre: Retro
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
Input: A.Buchanan, 2021-02-12
Last update: A.Buchanan, 2024-03-19 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (2)
A.Buchanan (3)