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Old July 7th 12, 08:08 AM posted to
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Default ChessMaster 9000 EGDB - black pawn on a7 problem (FEG 3.03c)

The following position occurred during a recent game against a friend.

8/p7/8/P7/4k3/2K5/3n4/8 b - - 0 1

The Chess Coach in ChessMaster 9000 (v1.0.0; The King v3.23; 3, 4 and 5-man EGDB generated using FEG 3.03c) reported "Nf3 Safeguards - Game is Drawn", when actually Nf3 as the only winning move, all others draw.

After black plays Nf3 the Chess Coach's advice is "Kc4 Black mates in 26", which is correct.

The problem appears to be with the black pawn on a7.

e.g. 4k3/p7/8/8/8/8/8/4K3 b - - 0 1 when the Chess Coach incorrectly reports "Kd7 - Black mates in 9".

It only appears with the black pawn on a7, and with black to move.

Does this reproduce on other people's machines?

I generated the 3, 4 and 5 piece endings using the makeall batch file in FEG 3.03c.

What am I doing wrong?

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