Author: Dave Gomboc
Date: 22:10:02 06/25/98
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On June 24, 1998 at 06:49:49, Dave Gomboc wrote: >You can call it luck, but I'm not sure it is luck. > >I remember during the prototype Rebel-Crafty NPS game (not match, as it turned >out :) that there was some discussion over whether solving something >positionally was really "solving it", because if some weights were tinkered with >the software might no longer solve the position correctly. > >There are a lot of positions that I "solve" at the board, not because I see all >the tactics in the position, but because I have a reasonable idea of what is >likely to be the better alternative, based upon some chess criteria that isn't >specific to the position being analyzed. For instance, it could be that a move >does a better job than others at preventing defenders from returning to the area >of attack. > >It is clear that a tactical analysis of the entire situation is going to >guarantee the best assessment possible, but if software has the right rules of >thumb (and that includes when the rule is applicable!) I think that the software >will do much better than the equivalent software without such small bonuses and >penalties. Both versions will be able to calculate the knockout blow, but I >suspect that the latter version will be finding that blow for the opponent >player more often than for itself, if you get my meaning. > >The situation with the actual problem being discussed above is a little >different, but my thinking is along the same lines. Something in your >search/eval causes your program to like Bh6 more than Re6, and it has to do with >what positions you reach when searching the subtrees, and how you assess them. >Other programs don't share Ferret's preference. Your program is making the >correct decision here, and it could be just luck, but it probably isn't. > >Dave Gomboc Of course, the fact that Qd3 shows up later means that there is always further progress to be made! :-) But computer chess wouldn't be any fun if that wasn't the case. Dave Gomboc
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