Author: Bruce Moreland
Date: 23:18:49 03/21/99
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On March 21, 1999 at 21:04:55, James T. Walker wrote: >I played 100 games with Crafty 16.5 vs Crafty 16.5 with all 3/4 man tablebases >and a few 5 man tablebases in an attempt to determine how much help the >tablebases are. Has anyone else done this and if so, what was the result? >The final score was Crafty w/tb +32 =38 -30 or 51 to 49. The first 50 games >were very different from the second 50 games even though the match was >uninterrupted for the 100 games. > First 50 Crafty w/tb +21 =15 -14 > Second 50 " " +11 =23 -16 >It looks like two different programs. Just shows that even 50 games is not a >large enough sample to prove anything. I still don't know what the ELO gain is >from tablebases ! I'm planning on a couple hundred more games later this week. >If anyone else has done this (Bob?) please post your results. >Jim Walker >P.S. These were only Game/5 minutes. I think they help but it is a little hard to quantify. I have seen lots of games end up in won KRP vs KR, but perhaps before this they were in won KRPP vs KR. I think that if you go down a piece or pawn against another program, what these tables give you is good practical swindling chances. This does happen, and it seems somewhat commonplace. Also, if you are up a pawn, or have a piece for a couple of pawns, you avoid the same low-material swindles and have a better chance of forcing a win. I doubt they help much against the typical wimpy human. bruce
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