Author: Robert Hyatt
Date: 09:06:14 06/25/98
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On June 25, 1998 at 06:35:40, Vincent Diepeveen wrote: > >On June 25, 1998 at 04:54:02, Roberto Waldteufel wrote: > >> >>Here's another question about Hsu's chess chip. I seem to recall reading some >>time ago that Hsu was considering a commercial release of his chip. Does anyone >>know anything more about this? If the chip were to become available, how could I >>use it in conjunction with a PC? would the fixed depth not be "out of sync" for >>the speed of, eg a Pentium 333Mhz if it was designed to work with a >>supercomputer, or can the fixed depth be adjusted to redo the balancing act in >>the new environment? If it were possible, I would be very interested in >>experimenting with this sort of hardware coupling. I assume that it would extend >>the depth to which a program could search by something like 4 extra plies within >>the same time. This would surely improve the strength of the PC ches programs >>quite a lot! >> >>Roberto > >You see it wrong. If you do 4 ply searches without hash etc, then >2.5 million drops quickly to say 300k nodes a second. > >So in fact you're playing against a kind of fritz5, which DOES search >all leafs fullwidth, which gives you some extra tactics, so commercial against >programs which are only tested at the same hardware and are only >busy with outbooking and trying to finish the game by means of tactics, >you beat with big numbers then, but it will play horrible. > >Vincent what are you talking about here? their chess processor most definitely has a hash table, and it most definitely has a good evaluation. And a 4 ply search without hash *does not* cut the speed by a factor of 10, except perhaps in a simple ending. In the middlegame it is not a factor of 2. 4 ply searches don't have many transpositions anyway.
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