Author: Ricardo Gibert
Date: 23:13:19 09/08/00
Go up one level in this thread
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. 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. 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. 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. All this assumes a pawn is worth 3 tempos, but some would say it is worth only 2½ pawns. Take your pick.
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