Author: Russell Reagan
Date: 19:34:40 12/29/03
Go up one level in this thread
On December 29, 2003 at 20:44:06, Sune Fischer wrote: > >[D]8/6pk/4Q2p/3P1P1q/8/6P1/4rP2/2R3K1 w - - 0 56 > >In the actual game Frenzee played d6!? and went on to win. > >In post mortem analysis it switches to Re1 with a bit more time, still >sacrificing the queen. > >I've been playing a little bit with the eval scores for passed pawns >and not surprisingly the position is very sensitive to these changes. > >Any other engines who wants to sacrifice the queen here, is it sound >or a lucky punch? > >-S. Here is what Fritz 8 thinks after about a 20 minute think on a 2GHz Athlon. Analysis by Fritz 8: 1.Qg6+ Qxg6 2.fxg6+ Kxg6 3.Rd1 Re7 4.f4 Kf5 +- (1.59) Depth: 7/13 00:00:00 31kN 1.Qg6+ Qxg6 2.fxg6+ Kxg6 3.Rd1 Kf6 4.Kf1 Re7 5.f4 +- (1.66) Depth: 8/15 00:00:00 61kN 1.Qd7! +- (1.69) Depth: 8/18 00:00:00 73kN 1.Qd7 Qf3 2.Rf1 Re5 3.d6 Rxf5 4.Qe8 Rd5 +- (1.81) Depth: 8/18 00:00:00 84kN 1.Qd7 Qf3 2.Rf1 Re5 3.d6 Rxf5 4.Qc8 Rf8 5.d7 +- (2.06) Depth: 9/22 00:00:00 234kN 1.d6! +- (2.09) Depth: 9/22 00:00:00 301kN 1.d6! +- (2.25) Depth: 9/22 00:00:00 323kN 1.d6-- +- (1.97) Depth: 10/34 00:00:00 460kN 1.d6 Rxe6 2.fxe6 Kg6 3.e7 ² (0.28) Depth: 10/40 00:00:00 610kN 1.Qd7! ² (0.31) Depth: 10/40 00:00:01 651kN 1.Qd7! ² (0.47) Depth: 10/40 00:00:01 656kN 1.Qd7! ± (0.78) Depth: 10/40 00:00:01 666kN 1.Qd7! +- (1.41) Depth: 10/40 00:00:01 696kN 1.Qd7 Qf3 2.Rf1 Re5 3.f6 Qxf6 4.f4 Re7 5.Qc6 Qxc6 6.dxc6 Kg6 +- (1.53) Depth: 10/40 00:00:01 809kN 1.Qg6+! +- (1.56) Depth: 10/40 00:00:02 1228kN 1.Qg6+ Qxg6 2.fxg6+ Kxg6 3.Rd1 Re7 4.f3 Rd7 5.Kf2 Kf5 6.Ke3 +- (1.66) Depth: 10/40 00:00:02 1243kN 1.Qg6+ Qxg6 2.fxg6+ Kxg6 3.Rd1 Re7 4.f3 Rd7 5.Kf2 Kf5 6.Ke3 Ke5 +- (1.50) Depth: 11/21 00:00:02 1439kN 1.Qd7! +- (1.53) Depth: 11/24 00:00:02 1648kN 1.Qd7-- ± (1.25) Depth: 12/26 00:00:05 3664kN 1.Qd7 Qf3 2.Rf1 ± (1.25) Depth: 12/35 00:00:06 4148kN 1.Qg6+! ± (1.28) Depth: 12/35 00:00:06 4167kN 1.Qg6+! +- (1.44) Depth: 12/35 00:00:06 4171kN 1.Qg6+ Qxg6 2.fxg6+ Kxg6 3.Rd1 Re7 4.f3 Rd7 5.d6 Kf5 +- (1.50) Depth: 12/35 00:00:06 4247kN 1.Re1! +- (1.53) Depth: 12/35 00:00:10 7903kN 1.Re1! +- (1.69) Depth: 12/35 00:00:10 8008kN 1.Re1! +- (2.00) Depth: 12/35 00:00:11 8164kN 1.d6! +- (2.03) Depth: 12/35 00:00:11 8794kN 1.d6! +- (2.19) Depth: 12/35 00:00:12 8917kN 1.d6! +- (2.50) Depth: 12/35 00:00:12 9248kN 1.d6-- +- (2.22) Depth: 13/34 00:00:13 9736kN 1.d6 Rxe6 2.fxe6 Qg5 3.Rc4 Qh5 4.d7 Qd1+ 5.Kh2 Qh5+ 6.Rh4 Qd1 7.f4 Qc2+ 8.Kh3 Qc7 +- (1.41) Depth: 13/37 00:00:14 10884kN 1.Re1! +- (1.44) Depth: 13/37 00:00:14 11295kN 1.Re1! +- (1.59) Depth: 13/37 00:00:15 11494kN 1.Re1! +- (1.91) Depth: 13/37 00:00:15 11848kN 1.Re1! +- (2.53) Depth: 13/37 00:00:17 13400kN 1.Re1 Rxe6 2.fxe6 Kg8 3.d6 Qa5 4.Re2 Qa1+ 5.Kh2 Qf1 6.e7 Qxe2 +- (2.56) Depth: 13/42 00:00:18 14622kN 1.Re1-- +- (2.28) Depth: 14/35 00:00:23 18598kN 1.Re1 Rxe6 2.fxe6 Kg8 3.d6 Qa5 4.Re2 Qa1+ 5.Kh2 Qf1 6.d7 +- (2.00) Depth: 14/36 00:00:24 19453kN 1.Re1! +- (2.28) Depth: 15/42 00:00:43 35440kN 1.Re1! +- (2.56) Depth: 15/42 00:00:46 38608kN 1.Re1 Rxe1+ 2.Qxe1 Qxf5 3.d6 Qc8 4.Qe4+ Kg8 5.Qe7 Qc1+ 6.Kg2 Qc6+ 7.Kh3 Qf3 8.Qe6+ Kh7 9.d7 Qh5+ 10.Kg2 +- (2.84) Depth: 15/42 00:00:57 47853kN 1.Re1! +- (3.13) Depth: 16/44 00:01:32 76227kN 1.Re1 Rxe1+ 2.Qxe1 Qxf5 3.d6 Qc8 4.Qe4+ Kg8 5.Qe7 Qc1+ 6.Kg2 Qc6+ 7.Kh3 h5 8.Kh4 Qh1+ 9.Kg5 Qd5+ 10.Kg6 Qd3+ +- (3.38) Depth: 16/44 00:02:00 100208kN 1.Re1! +- (3.66) Depth: 17/42 00:03:31 175345kN 1.d6! +- (3.69) Depth: 17/51 00:05:46 289532kN 1.d6! +- (3.84) Depth: 17/51 00:06:34 330351kN 1.d6-- +- (3.56) Depth: 18/46 00:07:06 359908kN 1.d6 Rxe6 2.fxe6 Kg6 3.d7 Qd5 4.Re1 Qd2 5.Re5 Qc1+ 6.Kg2 Qc6+ 7.Kf1 Qh1+ 8.Ke2 Qa1 9.f4 +- (1.44) Depth: 18/48 00:07:45 394354kN 1.Re1! +- (1.47) Depth: 18/48 00:08:05 411588kN 1.Re1! +- (1.63) Depth: 18/49 00:08:15 421345kN 1.Re1! +- (1.94) Depth: 18/49 00:08:34 438485kN 1.Re1! +- (2.56) Depth: 18/49 00:09:15 472186kN 1.Re1 Rxe6 2.fxe6 Kg8 3.d6 Qa5 4.Rb1 Qa8 5.d7 Kf8 6.Rc1 Qd8 7.Rc8 Ke7 8.Rxd8 +- (3.66) Depth: 18/54 00:11:19 567968kN 1.Re1 Rxe6 2.fxe6 Kg8 3.d6 Qa5 4.Rb1 Qa8 5.d7 Kf8 6.Rc1 Qd8 7.Rc8 Ke7 +- (3.66) Depth: 19/53 00:20:18 984956kN
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