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by Karellen
825 days ago
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> you could promote a single pawn at three files simultaneously. One by moving forward and then left and right capture. Ooh, didn't think of that, thanks. Still there's enough constraint in the legal destination squares to work around that. There's at least half the board that's inaccessible to a pawn about to promote, which should be enough to encode any of the 3 legal destination squares and 5 possible promotion targets. Edit: maybe keep the destination file as-is, and use the destination rank to encode the promotion piece? > Additionally, you could have two pawns promoting on the same square The source square should disambiguate between those though, right? |
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