Author: John Merlino
Date: 14:34:59 10/03/00
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On October 03, 2000 at 14:09:18, Uri Blass wrote: >These positions are from the latest match chessmaster8000-Crafty17.13 that was >posted here. >My impression from the match is that crafty has king safety problems and lost >some games by king attacks. > >1)[D]4bb1k/4qn1p/5p2/2Q1p1p1/1r2P3/1BN2P2/5BPP/3R2K1 w - - 0 1 >In this position chessmaster8000 played Qd5 instead of Qxe7 that wins a pawn and >drew the game. > >I am interested to know how much time does chessmaster8000 need to find Qxe7. >I tried Chessmaster6000 and after 2 hours that it did not find Qxe7 and I gave >up. >Later I gave it the moves Qxe7 Bxe7 and it needed some minutes to find the >obvious Bxf7. > I'm not sure that this is "obvious", given the time control (and the fact that neither of us know how much time CM had on its clock). After 1.Qxe7 Bxe7 2.Bxf7 Bxf7 3.Rd7 Rb3 4.Rxe7 Rxc3 5.Rxf7 Rc1+ 6.Be1 Rxe1+ 7.Kf2, White definitely wins a pawn. And, yes, it does seem obvious to me, too. But, oddly enough, the eval after the 15 plies necessary to calculate this is only about 0.4 higher than what it was at this position. CM8000 does consider Qxe7 briefly, but then switches to Qd5 at depth 8 at 0:06. It still believes Qd5 is the best move at depth 11 (nowhere near depth 15), after 3:11. jm
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