Author: Steven J. Brann
Date: 21:18:22 12/29/03
Go up one level in this thread
On December 29, 2003 at 21:35:19, John Merlino wrote: >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. > >Chessmaster 9000, default personality on a P4-2.4, waffles quite a bit on the >position. And it does, between 1:03 and 1:41, select Re1. At 2:29, it finally >sees d6 and sticks with it: > >Time Depth Score Positions Moves >0:00 1/7 1.66 89140 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Rd5 > 59.Re1 Rxf5 >0:00 1/8 1.37 157219 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Rxf5 > 59.Qc8 Rh5 60.Qc2+ Kg8 >0:02 2/9 1.17 508475 56.Qd7 Qf3 57.Rf1 Re5 58.f6 Qxf6 > 59.Qb5 Qf5 60.Rd1 Qc2 61.Rd4 Re7 >0:04 2/9 1.26 912577 56.Qb6 Qxf5 57.Qd4 Re4 58.Qd2 Re5 > 59.d6 Rd5 60.Qb4 Kg6 >0:09 3/10 1.00 1984480 56.Qb6 Rd2 57.Qa5 Qe2 58.Qc5 Qe5 > 59.Qb6 Qxf5 60.d6 Qg6 61.Rc6 Qf6 >0:11 3/10 1.19 2436013 56.Qd7 Qf3 57.Rf1 Re5 58.f6 Qxf6 > 59.Qb5 Qf5 60.Rd1 Qf3 61.Qb1+ Rf5 > 62.Qc2 >0:19 4/11 0.85 4483919 56.Qd7 Qf3 57.Qa7 Rd2 58.Qe3 Qxd5 > 59.Qe6 Qxe6 60.fxe6 Re2 61.Rc6 > Kg6 62.Kf1 >0:23 4/11 0.93 5484487 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 > 59.Qxf5+ Rxf5 60.fxg7 Rf7 61.f4 > Kxg7 62.Kf2 h5 63.Ke3 >0:45 5/12 0.94 10615245 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 > 59.Qxf5+ Rxf5 60.fxg7 Rf7 61.Rc4 > Rxg7 62.Rf4 Rd7 63.Kg2 Kg6 >1:03 5/12 1.82 15249674 56.Re1 Rxe6 57.fxe6 Kg8 58.d6 Kf8 > 59.Rc1 g6 60.e7+ Kf7 61.Re1 Qb5 > 62.e8=Q+ Qxe8 63.Rxe8 Kxe8 64.Kg2 > Kd7 >1:09 6/13 0.60 17011768 56.Re1 Rxe6 57.fxe6 Kg8 58.d6 Kf8 > 59.Rc1 g6 60.Rc8+ Kg7 61.d7 Qd1+ > 62.Kh2 Qh5+ 63.Kg2 Qd5+ 64.f3 Qa2+ > 65.Kg1 Qa1+ 66.Kh2 Qa2+ 67.Kh1 >1:41 6/13 0.96 24543465 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 > 59.fxg7 Qxb1 60.Rxb1 Kxg7 61.Rb7+ > Kf6 62.Rb6+ Kg7 63.f4 h5 64.Kf2 > Kf7 65.Rb7+ Ke6 >2:29 6/13 2.78 37513299 56.d6 Rxe6 57.fxe6 Qg5 58.Rf1 Qe5 > 59.e7 h5 60.Rd1 Qe2 61.Rd4 Qe1+ > 62.Kg2 h4 63.d7 h3+ 64.Kxh3 Qe6+ > 65.Kg2 >3:02 7/14 3.01 46466620 56.d6 Rxe6 57.fxe6 Qg5 58.Rf1 Qe5 > 59.e7 h5 60.Rd1 Qe2 61.Rd4 h4 62.d7 > Qe1+ 63.Kg2 h3+ 64.Kxh3 Qe6+ 65.Kh2 > Qh6+ 66.Kg2 > >The hard part is, of course, seeing that White will be a rook ahead after 18 >plies. > >jm CM9K default personality on a P4 3.0G machine has a definitive result for Re1 when SS=16. Time Depth Score Positions Moves 0:00 1/3 1.23 1500 56.Qc8 Qf3 57.Qc5 Qxf5 0:00 1/3 1.71 2524 56.Qa6 Rd2 57.Qa5 Qe2 0:00 1/4 1.72 4457 56.Qa6 Rd2 57.Qa5 Qe2 58.Qc5 0:00 1/5 1.33 11231 56.Qa6 Rd2 57.Qa5 Rd3 58.Re1 Qxf5 0:00 1/5 1.70 15621 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Qxf5 59.Qc7 0:00 1/6 1.63 26909 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Qxf5 59.Qxf5+ Rxf5 60.Rd1 Kg6 0:00 1/7 1.66 88298 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Rd5 59.Re1 Rxf5 0:00 1/8 1.37 154881 56.Qd7 Qf3 57.Rf1 Re5 58.d6 Rxf5 59.Qc8 Rh5 60.Qc2+ Kg8 0:01 1/9 1.17 494611 56.Qd7 Qf3 57.Rf1 Re5 58.f6 Qxf6 59.Qb5 Qf5 60.Rd1 Qc2 61.Rd4 Re7 0:03 1/9 1.26 907124 56.Qb6 Qxf5 57.Qd4 Re4 58.Qd2 Re5 59.d6 Rd5 60.Qb4 Kg6 0:06 1/10 1.02 1779267 56.Qb6 Rd2 57.Qa5 Qg5 58.Kf1 Rxd5 59.Qxd5 Qxc1+ 60.Kg2 Qb2 61.Qe4 Qf6 0:07 1/10 1.19 2110233 56.Qd7 Qf3 57.Rf1 Re5 58.f6 Qxf6 59.Qb5 Qf5 60.Rd1 Qf3 61.Qb1+ Rf5 62.Qc2 0:12 1/11 0.85 3542978 56.Qd7 Qf3 57.Qa7 Rd2 58.Qe3 Qxd5 59.Qe6 Qxe6 60.fxe6 Re2 61.Rc6 Kg6 62.Kf1 0:14 1/11 0.93 4387315 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 59.Qxf5+ Rxf5 60.fxg7 Rf7 61.f4 Kxg7 62.Kf2 h5 63.Ke3 0:24 1/12 0.94 7350112 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 59.Qxf5+ Rxf5 60.fxg7 Rf7 61.Rc4 Rxg7 62.Rf4 Rd7 63.Kg2 Kg6 0:41 1/13 0.94 12754005 56.Qb6 Rd2 57.Qb1 Rxd5 58.f6+ Qf5 59.Qxf5+ Rxf5 60.fxg7 Kxg7 61.Rc7+ Kf6 62.Rc6+ Kg7 63.f4 h5 64.Kf2 Rf7 65.Ke3 1:38 1/13 4.17 30087720 56.Re1 Rxe6 57.fxe6 Kg8 58.d6 Kf8 59.Rb1 Qe8 60.d7 Qd8 61.Rc1 Ke7 62.Rc8 g6 63.Rxd8 Kxd8 2:38 1/14 4.39 48968315 56.Re1 Rxe6 57.fxe6 Kg8 58.d6 Qa5 59.Rb1 Qa8 60.d7 Kf8 61.Rc1 Qd8 62.Rc8 Ke7 63.Rxd8 Kxd8 64.Kg2 Ke7 65.Kf3 4:11 1/15 4.64 78736292 56.Re1 Rxe6 57.fxe6 Kg8 58.d6 Qa5 59.Rb1 Qa8 60.d7 Kf8 61.Rc1 Qd8 62.Rc8 Ke7 63.Rxd8 Kxd8 64.Kg2 Ke7 65.Kf3 g6 66.Ke4 Steve
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.