Author: Ren Wu
Date: 12:04:26 06/16/98
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On June 16, 1998 at 04:14:16, Dezhi Zhao wrote: >I am happy that you share the same experience and results with me. >Here is the "vapor-ware" story: When I compared NegaScout to PVS, I found >the savings are virtually negligible (only hundreds of nodes per 3 millions). >I post the results to Crafty mailing list (crafty@jpunix.com) and got responses >from Dr. Hyatt and Vincent Diepveen. They had simliar test results. Vincent >mentained that PVS is the best. And Dr. Hyatt thought that the negligible >savings is not worth the additional structral complexity NegaScout imposes >to the search, and that it seems to be a "vapor ware". I think it is a >figurative >expression, even for a Chinese like me. I see, thanks. >My program is still under construction. I think it is now in Expert level. >It can easily beat average players without opening book and pondering. >Currently it searches around 100K nps on Pentium plain 133. >I have a long to-do-list. I'm not as opmistic as I was when starting this >personal project with a goal of Master level. >I am a great believer in bitboard approach. However Chinese chess >has a board of 9*10 squares instead of 8*8. I am now fighting the arcane >rules of reptition which are not easily and correctly handled as you know. That is pretty good! >Tell me something about your Chinese chess program. The best commercial >program as I know is a product of T-Time Co in Taiwan. Are you one of >the authors? No, I am not one of the author of that product. But my program can beat it without problem. I've been doing computer chess and computer chinese chess for more than 12 years. >PS: I often play at a Free Xiangqi Server, u can visit www.cchess.com. >my account is dzhao. Thanks, I may try this again. Last time i visited there, it is not very good. Do you have to operate your program manually there? >Best Regards > >Dezhi Zhao
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