Author: Vincent Diepeveen
Date: 08:47:30 12/23/02
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On December 23, 2002 at 11:42:18, John Lowe wrote: >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? >> >>>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). > >Hi Vladimir, > >I should like to learn something along the same lines. If I talk rubbish (often >do) perhaps someone more experienced will explain. > >Your piece values seem very familiar but it strikes me that they are in decimal! > >My piece values look identical but they're in hexadecimal. The value of a pawn >becomes 0100H and bonuses come in units of 0001H > >Bishops are interesting. 0380H is cumbersome. > >I have a little scheme: > >Name: Label: value: > >Pawn 01 01 =label or 1 >Knight 02 03 =label or 1 >Bishop 03 03 (+1 if 2 bishops) =label or 1 (+) >Rook 04 05 =label or 1 >Queen 09 09 =label or 1 >King 0F Priceless! (4F sometimes) >Even number pieces do not move on diagonals - ever. > >As you only lose one at a time, two bishops become valued at 7. > >Bonuses are something else ........ is it usual to talk about "centipawns"? If >so I wonder why! > >I also wonder if everyone has dropped the convention of using bit 15 as the >colour flag - it's so efficient to test! And at what washing machine chip is this supposed to still run? 2KB ram?
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