Author: Larry Griffiths
Date: 20:02:19 01/10/01
Hi Bob, You wrote... perft has the ability to dump the entire 5-ply tree which will let you compare if you sort my output and yours and then diff the two files... What I did... I created tree-dumps in my old working code and my new broken code and then compared the results. I found many occurrences of 3 extra moves by the white rook. I checked my code and found that whenever the white pawn was being promoted it scanned through all the moves in my movelist and if the "to" square was a promotion square, then the rook was being promoted to a Knight, Bishop, Rook and Queen. I ran WAC018 to 7 plys and we both match on moves again. Thanks for your advice! Larry.
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