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This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2004-12-23
 Inventor: Sydney  Schultz. Threatened Pawn Chess. Pawns start in threatened positions. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Greg Strong wrote on 2019-09-02 UTC

Ok, I've found the issue.  It was the result of a recent change.  To limit explosion in the size of the search tree by quiescent search, I was only doing four full plies of qsearch after which I was considering recaptures only. The problem is that I didn't have an exception for instances where the king was in check. So if the king couldn't get out of check with a recapture it was scoring the position a mate.

ChessV now agrees that e5f6 is the best move. e5f6 h6g5 f6f7 e8f7 d3e4 c8e6 f1c4 e6c4 b3c4 a8a5