Author: David Dory
Date: 06:27:51 03/27/02
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On March 27, 2002 at 05:28:28, Jouni Uski wrote: >[D]8/B5pp/4k3/P7/6n1/8/P6P/7K b - - 0 41 > >Crafty as black played Nxh2!!(??). Yes the game ended draw so the move is >probably correct, but I doubt, that Crafty's evaluation really understand this. >E.g. if white plays a6 then black has no way to a8 square... I don't see that. Black king is INSIDE the "square" of the a5 pawn after you add one more move because the White bishop has to get out of the way of the pawn. It may LOOK crazy, but just count the squares and moves up! What does Crafty 17.14 like as a move for Black in this position?? Does it do any better? If Nxh2 was such a bad move, Yace would have immediately jumped on a6 and won!! But it didn't, so although it looks bad perhaps, to humans, it's a good move. With White pawns on both edges of the board, the Bishop would certainly be favored to win against a Knight. I haven't seen any matches where 17.14 was better than 18.14, have you? Since you have them both, why don't you run a match with standard time controls and see how each one does? Be fair about hash table size and book! >Crafty 18.14 is clever endgame player, but still I am disappointed, when >version 17.14 solves 4 positions more in my 40 position endgame test and also >17.14 is on average about 30% faster in all postions! Test suites are crap for comparing engine to engine strength OTB. IMHO. Very crude indicators, only. I think your enthusiasm is great, but knowledge is just not something you can readily see and measure easily in a chess program. Not like NPS. My belief is forget the NPS, forget the test suites. Play a match or three, VERY FAIRLY! ** Then you'll know **. I'll be surprised if 18.14 is worse than 17.14. Dave
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