Author: John Merlino
Date: 12:24:42 02/17/03
Go up one level in this thread
On February 17, 2003 at 15:06:15, Steffen Basting wrote: >The position I just gave was 1 move before the one from which I gave the >analysis - fxg3+ and Nxg3 were played, so the position is: > >[D] 2bn1rk1/4r2p/p2p4/1ppPp3/8/2P2PN1/PP1Q1KBq/3R3R b - - 0 28 > >Regards, Steffen Chessmaster 9000 does not see losing the queen as being forced: Time Depth Score Positions Moves 0:00 1/3 -1.84 1560 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 0:00 1/4 -1.82 4117 28...Rxf3+ 29.Kxf3 Rf7+ 30.Nf5 Rxf5+ 31.Ke4 Rf4+ 32.Kd3 Bf5+ 33.Ke3 0:00 1/5 -2.96 14542 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Qg4+ 34.Ke3 Rxf1 35.Bxf1 0:00 1/6 -2.96 38279 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Qg4+ 34.Ke3 Rxf1 35.Bxf1 0:01 1/7 -3.41 98592 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Qg4+ 34.Ke3 Qg5+ 35.Kd3 e4+ 36.Kc2 Qxd2+ 37.Kxd2 Rxd5+ 38.Ke3 0:03 1/8 -4.95 326131 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 c4 32.Bf3 Bf5+ 33.Ke3 Bg4 34.Qf2 Rxf3+ 35.Qxf3 Bxf3 36.Rxf3 0:08 1/9 -6.13 840231 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Rh5 34.Bf3 Rh4+ 35.Kd3 e4+ 36.Kc2 exf3 0:24 1/10 -6.63 2688418 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rhf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Rh5 34.Rh1 Qg6+ 35.Ke3 Rxh1 36.Bxh1 Qh6+ 37.Kd3 Qxh1 1:05 2/11 -6.40 7163454 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Rh5 34.Rh1 Qg6+ 35.Ke3 Rxh1 36.Bxh1 Qh6+ 37.Kd3 Qh3+ 38.Qe3 Qf1+ 39.Kc2 Qxh1 2:07 3/12 -6.17 14637651 28...Rxf3+ 29.Kxf3 Rf7+ 30.Ke4 Qxg3 31.Rdf1 Bf5+ 32.Rxf5 Rxf5 33.Rf1 Rh5 34.Rh1 Rg5 35.Bf3 Rg4+ 36.Ke3 e4 37.Rf1 Qf4+ 38.Ke2 Qxd2+ 39.Kxd2 exf3 40.Rxf3 After forcing all moves up to 33.Rf1, it still does not see White losing its Queen. However, it DOES see that Black will be up at least a Knight and two passed pawns: Time Depth Score Positions Moves 0:00 1/3 -3.72 2073 33...Qg4+ 34.Ke3 Qg5+ 35.Kd3 e4+ 36.Kc2 Qxd2+ 37.Kxd2 Rxd5+ 38.Ke3 0:00 1/4 -3.72 5017 33...Qg4+ 34.Ke3 Qg5+ 35.Kd3 e4+ 36.Kc2 Qxd2+ 37.Kxd2 Rxd5+ 38.Ke3 0:00 1/4 -6.33 15016 33...Rh5 34.Bf3 Rh4+ 35.Kd3 e4+ 36.Kc2 exf3 0:00 1/5 -6.73 25356 33...Rh5 34.Rf3 Qg4+ 35.Ke3 Qg5+ 36.Ke2 Qxg2+ 37.Rf2 Rh2 0:00 1/6 -6.55 66560 33...Rh5 34.Rh1 Qg6+ 35.Ke3 Qh6+ 36.Kd3 Rxh1 37.Bxh1 Qh3+ 38.Qe3 Qf1+ 39.Kc2 Qxh1 0:01 1/7 -6.30 140917 33...Rh5 34.Rh1 Rg5 35.Bf3 Rg4+ 36.Ke3 e4 37.Qf2 Qf4+ 38.Ke2 exf3+ 39.Qxf3 Qxf3+ 40.Kxf3 0:03 1/8 -4.53 317141 33...Rh5 34.Rh1 Rxh1 35.Bxh1 Qg4+ 36.Kd3 Qh3+ 37.Ke2 Qh2+ 38.Kd3 c4+ 39.Kc2 Qxh1 40.Qg5+ Kf7 41.Qxd8 Qxd5 0:06 1/9 -6.95 738026 33...Rh5 34.Rh1 Rxh1 35.Bxh1 Nf7 36.Qc1 Kg7 37.Qe3 Qg4+ 38.Kd3 Qd1+ 39.Qd2 Qb1+ 40.Ke3 Qxh1 0:12 2/10 -6.95 1429928 33...Rh5 34.Rh1 Rxh1 35.Bxh1 Nf7 36.Qc1 Kg7 37.Qe3 Qg4+ 38.Kd3 Qd1+ 39.Qd2 Qb1+ 40.Ke3 Qxh1 0:44 3/11 -7.60 5196070 33...Rh5 34.Rh1 Rxh1 35.Bxh1 Nf7 36.a4 Kg7 37.Qe3 Qh4+ 38.Kd3 Qxh1 39.Kc2 Qg2+ 40.Kc1 bxa4 2:05 4/12 -7.60 15415374 33...Rh5 34.Rh1 Rxh1 35.Bxh1 Nf7 36.b3 Kg7 37.Qe3 Qh4+ 38.Kd3 Qxh1 39.Qg3+ Kf8 40.Ke3 Qxd5 41.Qg4 jm
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