Author: Uri Blass
Date: 23:42:49 08/29/00
Go up one level in this thread
On August 30, 2000 at 00:31:24, Ricardo Gibert wrote: >On August 29, 2000 at 23:19:59, Robert Hyatt wrote: > >>On August 29, 2000 at 19:18:17, Alexander Kure wrote: >> >>>On August 29, 2000 at 13:58:52, Graham Laight wrote: >>> >>>>Firstly, apologies to everyone for dashing off after the last game in the WMCCC. >>>> >>>>It enabled me to get an extra day's holiday with my girlfriend, though, which >>>>was well worthwhile! >>>> >>> >>>Well deserved, Graham! >>>Thanks again for your work. >>> >>>[...] >>> >>>This game clearly showed that Fritz plays in a different league than Crafty! In >>>fact I think this was one of the best games of the WMCCC. >>> >>>Greetings >>>Alex >> >> >>My take on this game is a bit different. I do _not_ want my program to make >>such a sacrifice and then see the eval steadily go _down_ over the next few >>moves. It means one of two things for it to win such a game: >> >>1. The eval is bogus. It is saying "this is bad" when in reality "this is >>good". I don't want that sort of evaluation. > >But this is unavoidable. Otherwise computer programs would only need to do a 1 >ply search. > >> >>2. The program was lucky. A little luck doesn't hurt. But it doesn't win >>tournaments very often. > >Again, unavoidable. Have crafty play against itself and you will still have >decisive games. The games are won due to luck, since they have the same eval. >The question is, "did Fritz make a good gamble?" > >> >>Either the eval was wrong, or it was lucky. Neither one leave me feeling like >>"fritz is in a different league than Crafty..." > >Of course, but that is pretty much how _all_ games are decided isn't it? No There are games when one side get advantage and slowly increase the advantage without having a worse position. > >> >>I suspect white has better moves that might have justified the pessimistic eval >>Fritz had... The right program might have made that sacrifice look as ugly as >>this game made it look brilliant... > >Better moves may exist, but you have to _find_ them. Crafty could find Nxe6. Crafty played too fast in london and Bob does not know the reason for it. It may be a misunderstanding with the operator or another problem with the machine. Uri
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