Author: Mogens Larsen
Date: 03:02:09 04/28/00
Go up one level in this thread
On April 28, 2000 at 05:47:14, Enrique Irazoqui wrote: >I posted before about two matches Fritz 6a - Crafty 17.10 that I played >yesterday with ponder on, tablebases and same opening book. On 2 identical >machines and game/1 minute, Fritz won 15-5. On the same machine and 50% CPU time >for each engine, game/2 minutes, Fritz won by the same 15-5. This is consistent >with Chessfun's results, which seems to indicate that ponder on/off is not >harming Crafty more than Fritz. The result that doesn't fit with all this is the >SSDF match, although the 15-10 of the SSDF seems much more real to me than the >75% scored by Fritz in the other matches. 75% means a difference of 200 Elo >points, and in no way Crafty is 200 points weaker than Fritz. A bit messy >altogether. Forgive my persistence, but I have to try and explain again. You conducted a match on _two_ computers with ponder _on_, which is fine. Chessfun matches are on _one_ computer with ponder _off_, which is equally fine. But since she hasn't released games played on two computers with ponder on to my knowledge, I faile to see your basis of comparison. You can't compare your results with the ones obtained by either SSDF or Chessfun. When Chessfun concludes her tests on two computers, then there might be an opportunity for speculation. I agree with your comments about the rating difference. >Anyway, what interests me now is not the relative strength of Fritz and Crafty, >but the effect of ponder off/on and the difference in performance between blitz >and slow games. As I said, the matches of Chessfun and my own are consistent and >seem to proof that between these two specific engines results are similar at all >time controls, with or without ponder on. But... The questions of ponder and blitz vs. standard are interesting, but there's not sufficient or comparable material to suggest anything yet. Best wishes... Mogens
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