Author: James T. Walker
Date: 07:02:59 03/13/00
Hello, I have revisited an old test I ran over a year ago trying to determine the value of tablebases. Last time I ran Crafty with tablebases vs Crafty without tablebases and the result showed only about 5-10 points value for tablebases. That test was terribly flawed in that I only had a few 5 man tablebases and did not have the important KRPKR. This time I had about 4 Gig of tablebases(Compressed) available for Hiarcs 7.32. I ran 200 games with tablebases and 200 games without tablebases for Hiarcs 7.32. All games vs Chess Tiger 12.0e. Hiarcs 7.32 ran on a PII-333 with 16 M for hash tables. Chess Tiger ran on a K6-3-450 with 8 M for hash tables. All games were game/5 minutes. The results were that without tablebases Chess Tiger showed a 75 point advantage over Hiarcs 7.32 using the hardware mentioned. With no change in Hardware but Hiarcs 7.32 using the 4 Gig of tablebases available, Chess Tiger's advantage dropped to 35 points(200 games). This leaves a net improvement of about 40 points for the tablebases. I also want to mention that the hardware advantage appears to be about 35-40 points and that would make Hiarcs 7.32 and Chess Tiger 12.0e about even at G/5 min with Hiarcs 7.32 using tablebases. Of course only 400 games is not enough to be very accurate but it is enough to get a rough idea under the circumstances mentioned. I would very much like to know of other test done by anyone in this area. If you know of any please point me to the info/site. Jim Walker
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