Author: Aaron Tay
Date: 23:17:21 08/30/02
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On August 30, 2002 at 18:01:02, Dann Corbit wrote: >On August 30, 2002 at 16:21:26, Uri Blass wrote: > >>On August 30, 2002 at 14:45:43, Arturo Ochoa wrote: >> >>>Hello: >>> >>>I post now the final results for the Match Yace + My Modified Book Vs. Yace + >>>NoBoook. >>> >>>I haven't analyzed the games but the result is clear: 13.5 - 6.5 for Yace + My >>>Modified Book. >> >>If not having book cause the program to lose on time then there is no doubt that >>book help. >> >>Yace no book lost 2 games on time(games 9 and 12). >> >>one after 1.c4 and one in a clearly drawn position. >>If we do not include the c4 game and include the second game >>that yace(no book) lost on time as a draw >>the result is only 12-7 for Yace with book. Yace loses on time? That's strange. It doesn't lose on time even at very fast time controls. >>From looking at the games I found that in most of the cases yace(no book) got >>equal position and there were only few cases when yace >>fell into traps. >>I believe that more time and better hardware can help >>programs to avoid more traps and to expose holes >>in the book so I expect the difference to be smaller at >>120/40 time control with faster hardware. > >From my experiments, I expect the difference to be larger at longer time >controls. At very fast time control (e.g. G/1 or G/2 minutes) there is very >little repeatable difference. At G/30 and above, the difference becomes very >clear. > >I have no idea why it turns out this way, because I should expect that the book >would matter more when you cannot think about the right move very long, since >the book moves should be pretty good, at least. Well i'll bet if you compare games at fast time control versus those that are at lower time control, you will find that using faster time controls, games are thrown out of book much earlier. This reduces any advanatage of having a book.. Do you have any way to keep track of the average number of moves the engines stay in book? I suspect being thrown out of book earlier is pretty much harmless if both sides are indentical, and the opening book doesn't cover how to refurte this early deviation. For example 1. d3 and I bet (actually I have some results) that it's going to be close to 50% results (for the games starting with 1.d3) if both sides are indentical except for opening books.
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