Author: Robert Hyatt
Date: 12:04:53 03/24/03
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On March 24, 2003 at 14:32:19, Uri Blass wrote: >On March 24, 2003 at 13:56:15, Robert Hyatt wrote: > ><snipped> >>>>If I had to play Belle today I would _not_ take it lightly. I'd expect to win, >>>>but I'd know >>>>that Belle was very capable of beating anything in one game. >>> >>>I expect Crafty to win against it even if you use only p90. > >I responded to Belle here and not to deep thought here so your comments are not >relevant. OK. I overlooked that. Crafty on a P90 is _not_ going to do well against Belle. Belle searched about 170K nodes per second. Crafty on a P90 is going to be about 1/10th that speed. I don't think null-move will make up that much ground, since testing with and without null-move in previous years suggested that null-move was worth maybe 50-70 rating points. Crafty on a pentium-pro 200 searches about 64K nodes per second on the bench command, which I just tried to be sure that number was right. That is 2.5X faster than a pentium 133, which is about 1.6X faster than a P90. So the P90 NPS for crafty will bei n the 16K nps range, which is roughly 1/10th the speed of Belle. Belle's speed is better than three doublings, so crafty is going to have a tough time of it with that machine. Crafty on current hardware would be a totally different animal, but on a P90, it might be ugly. > >I responded only later about Deep thought and >My opinion is that you cannot take lightly Deep Thought but you can expect to >win against it because you are better in tactics(I say it for the hardware of >today and not for p90). I don't think I'm better in tactics than they were/are. I might have some advantage due to null-move, but then they have singular extensions. Evaluation is a toss-up as they were not "dumb" by any stretch, since they beat GM players handily. > >I know of no tactics of them from games that programs of today on fast hardware >have problem to find and I know about the opposite(tactical mistakes of deep >thought that programs of today have no problem to avoid). > >Uri
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