Author: Carmelo Calzerano
Date: 07:55:09 01/21/02
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On January 20, 2002 at 22:16:08, Scott Gasch wrote: > >I can't reproduce the move by inputting the PGN or just running the FEN. I also >tried running the positions in that game near the blunder with a full paranoid >build (which is about 100nps because of all the stuff it checks) and come up >with nothing. snip >I'm more than open to suggestions about what else to try -- I'd be grateful for >any ideas. Hello Scott! IIRC, Monsoon was showing a mate score the move before the blunder. If you use any tricks to stop the search before time is up in such kind of situations, that's a place where you should give a look IMHO. Possibly the PV is sometimes incorrectly stored or retrieved in such cases, or something similar... You probably already tried this; however my humble suggestion is: as a first step, try to reproduce the error using exactly the same version of Monsoon that played against Quark, and starting playing a few moves before the blunder. Of course, you should use normal search mode, not analysis; and let the engine think long enough to make sure that it actually sees the mate as it did in the real game. Trying to reproduce about the same timings both for search and ponder would be even better, of course; obviously you have no chance to reproduce the same environment, but if the problem is related to the mate score (as I hope) that shouldn't matter so much. If in these conditions the bug shows up again, it should be quite easier for you to spot it. Just my two cents ;-) Bye, Carmelo
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