Author: Dann Corbit
Date: 14:40:49 03/28/00
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On March 28, 2000 at 17:13:08, Ernst A. Heinz wrote: >Hi Peter, > >>[D]3qkbr1/1b1n1p1p/4pp2/rB6/P2p1B2/5N2/1P3PPP/R2Q1RK1 b - - > >Your node explosion might just be an artifact of "LambChop" >for this special position. Things like this simply happen >(e.g. because of slightly unstable evaluation scores causing >unfortunate researches at interior nodes). > >"DarkThought WCCC'99" does unlimited recapture extensions >(in Hitech style, i.e., capture bringing score close back to >root value) with a full ply increase. Yet, its effective >branching factor remains smaller than 2.5 in iteration #12. > >00:03:08 11.01 e5 Bg3 Be7 Nh4 Ba6 Bxa6 Rxa6 Qd3 Rb6 Qxh7 =-0.88 #61077398 >00:07:22 12.01 e5 Bg3 Be7 Nh4 Ba6 Bxa6 Rxa6 Qd3 Nc5 Qxh7 =-0.95 #142815058 > >That's why I like to speak of "scalable search" in connection >with "DarkThought" ... :-) Interesting question (to me anyway) -- Why doesn't anyone's program find the best move? Is it positional? Is it zugzwang? What is the real reason the best move is never found by any of the programs that examine the position? Or do some find it?
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