Author: John Merlino
Date: 10:59:36 07/12/04
Go up one level in this thread
On July 12, 2004 at 10:14:00, Andrew Dados wrote: >Since noone posted this then maybe I am missing something obvious here... >After Diep move 30... Qd4 this position occured in the game: > >[D]1r3k1r/3b1ppp/1q1p4/3PpPP1/1pB1P3/pP4P1/P1RQ4/1K5R b - - 0 30 > >Now after 31. Qxd4 exd4 32.Rd2 white (fritz) gets simple position with a pawn >up. I am having trouble understanding why 30... Qd4 was played and 31 QxQ was >not. > >-Andrew- In the initial position, CM9_SKR on an AMD 2500 says that 30...Rc8 is best, but White has the advantage: Time Depth Score Positions Moves 0:00 1/3 0.47 424 30...Ke8 31.Be2 Ke7 0:00 1/3 0.39 683 30...Kg8 31.f6 g6 0:00 1/4 0.47 2098 30...Kg8 31.f6 h5 32.fxg7 Kxg7 33.Be2 0:00 1/4 0.34 3293 30...Rc8 31.Bd3 Kg8 32.Qh2 Rxc2 33.Bxc2 0:00 1/5 0.28 10258 30...Rc8 31.Be2 Rxc2 32.Qxc2 Ke7 0:00 1/6 0.34 30313 30...Rc8 31.f6 Rg8 32.Rxh7 Bg4 33.Be2 0:00 1/7 0.36 77933 30...Rc8 31.f6 Kg8 32.fxg7 Kxg7 33.Qf2 Qxf2 34.Rxf2 Rhd8 35.Kc2 0:01 1/8 0.25 266825 30...Rc8 31.Rcc1 Ke8 32.Rh4 g6 33.Rf1 Ke7 34.Qe2 0:02 1/9 0.41 513706 30...Rc8 31.f6 gxf6 32.gxf6 h5 33.Qg5 Rg8 34.Qh6+ Ke8 35.Qh7 Rf8 36.Qxh5 0:12 2/10 0.22 2949461 30...Rc8 31.Rcc1 Ke7 32.Rh2 h5 33.gxh6ep gxh6 34.g4 f6 35.Rxh6 0:21 2/11 0.52 5364062 30...Rc8 31.f6 gxf6 32.gxf6 h5 33.Qg5 Rg8 34.Qh6+ Ke8 35.Qxh5 Bg4 36.Qh4 Kd8 37.Rch2 0:26 2/11 0.43 6822536 30...Ke8 31.f6 gxf6 32.gxf6 h5 33.Be2 Rg8 34.Qh6 Qf2 35.Bg4 Qxg3 36.Bxd7+ Kxd7 37.Qxh5 0:38 2/11 0.40 9950671 30...Ke7 31.f6+ gxf6 32.gxf6+ Kd8 33.Qh6 Qd4 34.Qg7 Re8 35.Re1 Rc8 36.Qxf7 h6 37.Qg7 1:12 2/12 0.59 19446083 30...Ke7 31.f6+ gxf6 32.gxf6+ Kd8 33.Qg5 Qd4 34.Qg7 Re8 35.Re1 Rc8 36.Qxf7 h5 37.Qxh5 Rg8 1:20 2/12 0.48 21646604 30...Rc8 31.f6 Bg4 32.fxg7+ Kxg7 33.Qf2 Qxf2 34.Rxf2 Kg6 35.Rh4 Kxg5 36.Rxf7 h5 37.Kc2 2:40 3/13 0.48 44217598 30...Rc8 31.Qf2 Qxf2 32.Rxf2 Ke7 33.Rfh2 h6 34.f6+ gxf6 35.Rxh6 Rxh6 36.gxh6 f5 37.h7 Rh8 38.Bd3 fxe4 39.Bxe4 After 30...Qd4, The King agrees with 31.Qxd4 exd4 32.Rd2, with a much better score for White: Time Depth Score Positions Moves 0:00 1/3 1.00 693 31.Qxd4 exd4 32.Rd2 Ke7 33.Rxd4 0:00 1/4 1.00 1913 31.Qxd4 exd4 32.Rd2 Ke7 33.Rxd4 0:00 1/5 0.81 10537 31.Qxd4 exd4 32.Rd2 h5 33.gxh6ep Ke7 34.Rxd4 Rxh6 35.Rxh6 gxh6 0:00 1/6 0.87 30929 31.Qxd4 exd4 32.Rd2 Ke7 33.Kc2 f6 34.gxf6+ Kxf6 35.Rxd4 0:00 1/7 0.93 114516 31.Qxd4 exd4 32.Rch2 Rc8 33.Kc2 Ke7 34.Rxh7 Rxh7 35.Rxh7 Ba4 0:00 1/8 0.97 197778 31.Qxd4 exd4 32.Rch2 Re8 33.Bd3 h5 34.gxh6ep Rxh6 35.Rxh6 gxh6 36.Rxh6 Ke7 0:02 1/9 0.95 522696 31.Qxd4 exd4 32.Rd2 h5 33.gxh6ep Rxh6 34.Rxh6 gxh6 35.Rxd4 Bb5 36.Kc2 Rc8 0:05 2/10 0.82 1370382 31.Qxd4 exd4 32.Rd2 Ke7 33.Rxd4 f6 34.gxf6+ Kxf6 35.Kc2 g6 36.Rdd1 gxf5 0:11 2/11 0.91 3122225 31.Qxd4 exd4 32.Rd2 Ke7 33.Kc2 h5 34.gxh6ep Rxh6 35.Rxh6 gxh6 36.Rxd4 Bb5 37.Bxb5 Rxb5 38.Rc4 0:29 2/12 0.84 7979042 31.Qxd4 exd4 32.Rd2 Ke7 33.Rxd4 f6 34.gxf6+ Kxf6 35.Rh4 h6 36.Kc2 Rbc8 37.Rd1 Rhe8 1:17 3/13 0.87 21602079 31.Qxd4 exd4 32.Rd2 Ke7 33.Rdh2 h5 34.gxh6ep gxh6 35.Rxh6 Rxh6 36.Rxh6 Rg8 37.f6+ Kd8 38.Rh7 Rxg3 39.Rxf7 Rg2
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