Author: James Swafford
Date: 18:19:45 03/17/04
Just what is a good eval worth? I ran Crafty on an AMD XP 2000+ (about 1.5 ghz) on ICC with a stripped down eval, then with it's regular eval to find out. Check out the summaries below (the top one is for stripped eval, of course). By "stripped down", I mean that the eval counted only material, some very crude pawn heuristics (doubled pawn, passed pawn, isolated pawn), and used pawn and knight piece square tables. That's it. I'm a bit surprised that the difference isn't a bit more; it's less than 200 points for blitz and bullet. I strongly suspect the difference would've been much greater for standard games, but I have no data to support that. Anyone done similar tests? cnt | avg | avg | base_secs | inc_secs | description -----+-----------------------+-----------------------+-----------+----------+------------- 271 | 2313.6531365313653137 | 1731.1623616236162362 | 120 | 1 | Br 2 | 2431.0000000000000000 | 1031.0000000000000000 | 300 | 3 | bu 673 | 2409.4680534918276374 | 1654.3239227340267459 | 300 | 3 | br (3 rows) cnt | avg | avg | base_secs | inc_secs | description -----+-----------------------+-----------------------+-----------+----------+------------- 246 | 2476.1422764227642276 | 1644.9471544715447154 | 120 | 1 | Br 2 | 2436.0000000000000000 | 1845.0000000000000000 | 120 | 1 | Bu 567 | 2583.1869488536155203 | 1653.4673721340388007 | 300 | 3 | br -- James
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