Author: Robert Hyatt
Date: 07:20:24 01/03/98
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On January 03, 1998 at 03:34:28, Amir Ban wrote: >On January 03, 1998 at 02:37:13, Bruce Moreland wrote: > >> >>On January 03, 1998 at 01:55:11, Amir Ban wrote: >> >>>Huh ? Your PV at ply 7 shows black a rook up, yet -2.87 down ? Looks >>>like you evaluate the two passed pawns as worth almost a queen, unless I >>>am missing something. Of course, you had to do that to solve WAC #2. >>>It's quite correct in this position, and maybe the only way to handle >>>it. This would be very risky if applied too generally. What is the >>>formulation ? >> >>Bob is very speculative about passed pawn evaluation, but you don't need >>to do this to solve Wac 2 in reasonable time. >> >>bruce > >Agreed, but WAC 2 is child's play compared to this Comet position, and >Bob's heuristic really pays here. I'm impressed. I handle such positions >with searching, and have to take some bad failures sometimes. I'm not >the only one I'm sure. > >Amir Just be aware that there are risks involved. IE imagine that black has a bishop rather than a rook, and that the bishop is on the diagonal to prevent *either* pawn from advancing. There are some cases that I don't handle well, although they are not hard to fix either. But I've seen this lose games as well, although I believe it wins more than it loses because of it... Speculation is fun of course, but it is most effective against *humans*... *not* against computers, although some speculation works well against computers as well.
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