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Impossible check align en passant capture #14

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veloce opened this issue Apr 10, 2023 · 0 comments · May be fixed by #19
Open

Impossible check align en passant capture #14

veloce opened this issue Apr 10, 2023 · 0 comments · May be fixed by #19

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@veloce
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veloce commented Apr 10, 2023 •
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This position cannot be reached by standard chess from initial position:

id align-ep
epd 8/8/8/1k6/3Pp3/8/8/4KQ2 b - d3
perft 1 6
perft 2 121
perft 3 711

When dartchess supports optional validity requirements, it should be able to validate that perft.
@veloce veloce linked a pull request Apr 15, 2023 that will close this issue
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@veloce veloce changed the title Fix chess tricky perft Impossible check tricky perft Apr 16, 2023
@veloce veloce changed the title Impossible check tricky perft Impossible check align en passant capture Apr 16, 2023
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Impossible en passant capture that blocks a check lichess-org/dartchess
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@veloce