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Subject: Re: 14 distinct checkmate or mate in 1 positions after 3 plies (fool's mate)

Author: Andreas Stabel

Date: 00:27:09 06/22/99

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On June 21, 1999 at 15:20:39, Dann Corbit wrote:

>The complete categorization of "fool's mate":
>rnbqkbnr/pppp1ppp/4p3/8/5PP1/8/PPPPP2P/RNBQKBNR b KQkq f3
>rnbqkbnr/pppp1ppp/4p3/8/5PP1/8/PPPPP2P/RNBQKBNR b KQkq g3
>rnbqkbnr/pppp1ppp/4p3/8/6P1/5P2/PPPPP2P/RNBQKBNR b KQkq -
>rnbqkbnr/pppp1ppp/4p3/8/6P1/5P2/PPPPP2P/RNBQKBNR b KQkq g3
>rnbqkbnr/pppp1ppp/8/4p3/5PP1/8/PPPPP2P/RNBQKBNR b KQkq f3
>rnbqkbnr/pppp1ppp/8/4p3/5PP1/8/PPPPP2P/RNBQKBNR b KQkq g3
>rnbqkbnr/pppp1ppp/8/4p3/6P1/5P2/PPPPP2P/RNBQKBNR b KQkq -
>rnbqkbnr/pppp1ppp/8/4p3/6P1/5P2/PPPPP2P/RNBQKBNR b KQkq g3
>rnbqkbnr/pppp1ppp/4p3/8/5P2/7P/PPPPP1P1/RNBQKBNR b KQkq -
>rnbqkbnr/pppp1ppp/4p3/8/5P2/7P/PPPPP1P1/RNBQKBNR b KQkq f3
>rnbqkbnr/pppp1ppp/4p3/8/8/5P1P/PPPPP1P1/RNBQKBNR b KQkq -
>rnbqkbnr/pppp1ppp/8/4p3/5P2/7P/PPPPP1P1/RNBQKBNR b KQkq -
>rnbqkbnr/pppp1ppp/8/4p3/5P2/7P/PPPPP1P1/RNBQKBNR b KQkq f3
>rnbqkbnr/pppp1ppp/8/4p3/8/5P1P/PPPPP1P1/RNBQKBNR b KQkq -

I don't understand how this can be right. My program count all terminations
in the usual way of generating the move tree and there are only eight
move sequences that lead to a mate in the first four plies. Which clearly
don't give fourteen distinct positions.

Regards
Andreas Stabel

• Re: 14 distinct checkmate or mate in 1 positions after 3 plies (fool's mate) Dann Corbit 00:44:13 06/22/99
  • Re: 14 distinct checkmate or mate in 1 positions after 3 plies (fool's mate) Dann Corbit 00:50:06 06/22/99
    • Re: 14 distinct checkmate or mate in 1 positions after 3 plies (fool's mate) Dann Corbit 01:15:02 06/22/99

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