2 problem(s) found in 5248 milliseconds (displaying 2 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND A='Geissler, Norbert' AND NOT G='Fairies' AND NOT K='Cant Castler' AND G='Retro' AND A='Geissler, Norbert'] [download as LaTeX]
1. f4 e5 2. Kf2 Dh4+ 3. Kf3 Df2+ 4. Kg4 h5+ 5. Kh3 h4 6. e4 d5+ 7. g4 hxg3ep#
Keywords: Unique Proof Game, En passant as mating move, En passant
Genre: Retro
Computer test: Natch 2.1 Copyright (C) 1997,98,99,2001,2002 Pascal Wassong
FEN: rnb1kbnr/ppp2pp1/8/3pp3/4PP2/6pK/PPPP1q1P/RNBQ1BNR
Input: Gerd Wilts, 1996-06-13
Last update: A.Buchanan, 2023-04-08 more...
Genre: Retro
Computer test: Natch 2.1 Copyright (C) 1997,98,99,2001,2002 Pascal Wassong
FEN: rnb1kbnr/ppp2pp1/8/3pp3/4PP2/6pK/PPPP1q1P/RNBQ1BNR
Input: Gerd Wilts, 1996-06-13
Last update: A.Buchanan, 2023-04-08 more...
1. ... e3 2. Da5 Df3 3. b6 Dxa8#
Numerous retro tries but none distinct
Numerous retro tries but none distinct
The task here is to maximize the number of necessary units in a homebase h#.
Henrik Juel: 1... e3 2.Da5 Df3 3.b6 Dxa8#
White (not Black) has no last move, so he has the move, and the stipulation is really h#2.5 (2020-09-23)
A.Buchanan: Can shift sBd7 to c7 for an entirely different mate, but alas one of sBg7h7 might be removed without losing soundness. (2020-09-24)
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Henrik Juel: 1... e3 2.Da5 Df3 3.b6 Dxa8#
White (not Black) has no last move, so he has the move, and the stipulation is really h#2.5 (2020-09-23)
A.Buchanan: Can shift sBd7 to c7 for an entirely different mate, but alas one of sBg7h7 might be removed without losing soundness. (2020-09-24)
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Keywords: Homebase (2), No legal last move for White
Genre: h#, Retro
Computer test: C+ Popeye v4.85 + retro thinking
FEN: r2qk1nr/pp1ppppp/8/8/8/8/1PPPPPP1/2BQKB2
Input: A.Buchanan, 2020-09-23
Last update: A.Buchanan, 2023-12-07 more...
Genre: h#, Retro
Computer test: C+ Popeye v4.85 + retro thinking
FEN: r2qk1nr/pp1ppppp/8/8/8/8/1PPPPPP1/2BQKB2
Input: A.Buchanan, 2020-09-23
Last update: A.Buchanan, 2023-12-07 more...
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The problems of this query have been registered by the following contributors:
Gerd Wilts (1)A.Buchanan (1)
A.Buchanan: Does anyone know a trick to find duplicate occurrences of a keyword? My only technique is to stumble across them from time to time (2022-05-07)
Henrik Juel: I cannot help you, of course, Andrew
But it is curious that the error occurred in a problem by the father of the PDB (2022-05-07)
A.Buchanan: Recent changes can be seen by clicking on the "more...", but it doesn't matter (2022-05-07)
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