Author: Robert Hyatt
Date: 15:23:50 05/21/01
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On May 21, 2001 at 13:06:51, Andreas Schwartmann wrote: >I received an e-mail today asking me for help on GS 2930 test suite position >#13. My chess abilities are not good enough, I am afraid, but what do you think >about this? Here comes the mail: > >Andreas, > >I have been using the GS 2930 test suite to estimate the rating for the >Deep Blue system. This is for use in a paper we are preparing. I >downloaded the test suite from your web site. There are three problems >that the system does not solve in 20 minutes. One of them in particular, >#13, is not solved even for very deep searches. The given move is Bxg7, >but Deep Blue Jr. gives a different move that has a somewhat higher score >than Bxg7. The PV follows. Do you have any opinion on this? Thank you. > >Regards, > >Murray > >Rh5 Qc2 Qe7 Qb2 Ne5 Rc1 g4 Rf1 Kf1 Qb1 Kg2 Qe4 Kh3 Qb1 Rf5 Qf1 Kh4 Qg2 h3 >Qa8 Rf7 +1.49 > >-- > >Any comments? >Andreas Here is the FEN for the position: 2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - Suggested best move is Bxg7. I have run this one before on Crafty. Just tried it again to see what it thinks... After 11 plies, 2 minutes, it likes Qe4 with a score of +.40, In watching Crafty search at depth=12, Bxg7 has popped up to the number 2 position in terms of nodes searched for the previous iteration. But it doesn't replace Qe4 as the best move at 12... I will try to run it a long while later... Would be nice to see them post things like this or write it up, so that we have real positions to compare with them. I certainly can't get a score that high from depth=12, which will take at least 5 mins to complete, and depth=13 is unlikely to pop up before 10 minutes at best. At least we have a test position, a score, and a partial PV to look at... Bob
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