Author: Antonio Dieguez
Date: 05:44:57 09/09/00
Go up one level in this thread
On September 09, 2000 at 02:13:19, Ricardo Gibert wrote: >On September 08, 2000 at 19:05:20, Antonio Dieguez wrote: > >>just for fun, can you do a search with your program in the initial position? >> >>[D]rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 >> >>here is for amyan, unrealistic evals? 1/3 of a pawn just for one piece more >>developed hum... may be better something a bit exponential? >> >>[2] -0.01 87 e2e4 e7e5 >>[3] +0.35 426 e2e4 g8f6 b1c3 >>[4] -0.01 2021 d2d4 d7d5 g1f3 g8f6 >>[5] +0.32 7746 e2e4 e7e5 g1f3 g8f6 b1c3 >>[6] +0.12 24010 e2e4 e7e5 g1f3 g8f6 f1c4 b8c6 >>[7] +0.30 63896 e2e4 e7e5 g1f3 g8f6 b1c3 b8c6 d2d4 e5d4 f3d4 >>[8] +0.16 282830 e2e4 e7e5 g1f3 g8f6 f1c4 f6e4 d2d3 e4d6 f3e5 >>[9] +0.27 1086340 e2e4 e7e6 b1c3 g8f6 g1e2 f8b4 e4e5 f6d5 d2d4 >> >>just me. hello >Theoretically it should be about 1/6th of a pawn. If White is 1/3rd of a pawn >better than "even", then Black is 1/3rd of a pawn worse than "even" or in other >words, White is 2/3rds of a pawn better than Black, which can't be right. no, +1/3 for white means white is 1/3 of a pawn better than black. very ugly speak this way about chess anyway :) >With White being 1/6th of a pawn better than "even", then Black is 1/6th of a >pawn worse than even, so now White is now 1/3rd of a pawn better than Black, >which is what you would expect. I remember some guy on ICC reported .17 with one >of the commercial programs, which is consistent with 1/6th of a pawn. .17 doens't seem rare, i will implement an exponential function for development and also for king danger patterns. May be the average between x and x^2, or something like that. >With the eval oscillating with odd or even depth, you should be getting a ½ >tempo better on odd ply and zero on even ply. You're showing instead about 1 >tempo better on even ply and about a ½ tempo better on odd ply. hey, in the initial position white plays and wins! ok I get it but is not so simple. >All this assumes a pawn is worth 3 tempos, but some would say it is worth only >2½ pawns. Take your pick. mmmh...
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