Author: Uri Blass
Date: 08:01:06 12/23/02
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On December 23, 2002 at 10:41:03, Vladimir Medvedev wrote: >>Movei can solve it without bonus for passed pawns and without bonus for >>connected passed pawns. > >At which depth? Is it due to good pawn extensions, or due to some other [secret] >technique? I remember that latest tested version solved it at depth 12 or 13 dependent on size of hash tables. I used verified null move pruning(otherwise it needed depth 14 and more time because I do not extend pawn pushes that are not pawn to the 7th). I use also check extensions. > >>Based on your words: >>If your target is to be better in test suites then use 350 >>If your target is to be better in games use 275 > >Yes, this seems to me reasonable. > >>other programmers may use different evaluation for rook,bishop,knight >>and different piece square table and different mobility evaluation. > >In the sources I have read these values are quite typical (100-300-350-500-900, >plus or minus 10...50 centipawns). plus minus 10...50 centipawns+different piece square table may change. I also do not know your piece square table for pawn in the 6th and in the 7th. These difference together can be 75 between programs(only the difference between +50 and -50 is more than 75). Uri
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