Author: Richard Pijl
Date: 00:49:47 03/07/06
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>If one's results do not rotate approximately as described >for the four positions and you say the evaluation is an >issue, what kinds of evaluation issues have you seen that >could explain it?!? I had this problem long time ago in the Baron as well. To be able to detect these issues I created a little tool that reads a large PGN file, and for every position in the PGN file calls the static evaluation function for that position mirror the position and call static eval again. Whenever that didn't give exactly the same score for both positions, I print both fens, and continue. Usually, if there is an evaluation mirroring bug, it doesn't take long for it to find it. Richard.
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