Author: Amir Ban
Date: 13:27:48 07/17/02
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On July 17, 2002 at 11:44:26, K. Burcham wrote: > >You show below that the two programs play 36.Qb6, not axb5. > >You are actually strengthening Kasparov's question "how could Deep Blue fail to >play 36.Qb6 ?". 5 years later, I've yet to see a program that plays 36.axb5. > >Amir > > > >Deep Blue >Game 2 move 36 > >Fritz 7 on 1533 mhz amd with 432 hash, will play 36.axb5 between 39 minutes > and up to 70 minutes in eval, (see below). > >like I said the three positions after blacks move 40 seem equal. both programs >threaten the same as Deep Blue and will play >without human interference the moves Be4 and axb5. the newer programs accomplish >same objective by playing axb5, just not first move in this line. > >kburcham > It is needed to understand what the fuss was about here. 36.Qb6 wins a pawn. Other moves don't. Kasparov expected the natural Qb6 and planned in response to give away two more pawns for an attack, which would have given him some chances. Kasparov did not believe any computer can see the merit of giving up these three pawns. So, when Deep Blue instead played 36.axb5, he asked why. There's nothing special about 36. axb5. If you decide not to take the pawn with Qb6, then this is a natural second choice. If the answer to Kasparov's question is that Deep Blue saw the line Kasparov considered and evaluated it properly, then the question is answered and hooray for Deep Blue. Otherwise it's still unanswered. Amir
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