Author: John Merlino
Date: 12:00:56 02/04/02
Go up one level in this thread
On February 04, 2002 at 07:41:13, Uri Blass wrote: >This position is from the ssdf games(RebelCentury4-Shredder5.32). > >[D]8/8/8/3qr2p/4k2P/3p2PK/R7/Q7 w - - 0 79 >The last move of Shredder was Ke3-e4 > >How much time does your program need to see that white wins material after >ke3-e4? >Is ke3-e4 the losing blunder in the game? > >The game continued 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Ra2 Qb5 and Shredder >had to resign at move 121 > CM8000 says that 78...Ke4 was not "losing", and it appears to see a draw after 79.Rf2 Rf5: Time Depth Score Positions Moves 0:00 1/3 -0.74 4249 79.Qe1+ Kf5 80.Qf2+ Kg6 81.Ra6+ Re6 0:00 1/3 0.60 7689 79.Ra4+ Kf5 80.Rd4 Qe6 81.Rxd3 0:00 1/4 -0.46 14432 79.Ra4+ Kf5 80.Rd4 Qe6 81.Qc1 Kf6+ 82.Kg2 0:00 2/5 -0.53 49363 79.Ra4+ Kf5 80.Rd4 Qe6 81.Qd1 Kg6+ 82.g4 Re3+ 83.Kg2 hxg4 84.Rxg4+ Kh7 0:03 2/6 -1.06 266968 79.Ra4+ Kf5 80.Rd4 Qe6 81.Qf1+ Kg6+ 82.g4 hxg4+ 83.Rxg4+ Kh5 84.Qf3 Re2 0:08 2/6 -0.41 575407 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Qa1+ Kc4 83.Qa2+ Kb5 84.Qb3+ Kc6 85.Rb2 0:17 3/7 -0.32 1325178 79.Rf2 Rf5 80.Qe1+ Kd4 81.Rb2 Qd7 82.Rb4+ Kc5 83.Qc3+ Kd6 84.Kh2 Ke7 85.Re4+ Kf8 86.Qh8+ Kf7 0:42 4/8 -0.39 3263983 79.Rf2 Rf5 80.Qe1+ Kd4 81.Qa1+ Kc5 82.Ra2 Qf3 83.Qc3+ Kd5 84.Ra5+ Ke6 85.Ra6+ Kd7 86.Ra7+ Kd6 87.Qd4+ Qd5 88.Qb6+ Qc6 89.Qd4+ Ke6 2:13 5/9 0.00 9916533 79.Rf2 Rf5 80.Qe1+ Kd4 81.Qa1+ Kc5 82.Ra2 Qf3 83.Qc3+ Kd5 84.Ra5+ Ke6 85.Ra6+ Kd7 86.Ra7+ Kd6 87.Ra6+ Kd5 88.Ra5+ 5:10 6/10 0.00 23775970 79.Rf2 Rf5 80.Qe1+ Kd4 81.Qa1+ Kc5 82.Ra2 Qf3 83.Qc3+ Kd5 84.Ra5+ Ke6 85.Ra6+ Kd7 86.Ra7+ Kd6 87.Ra6+ Kd5 88.Ra5+ I should also note, though, that the default personality DOES play 78...Ke4 after thinking for about 30 seconds on my PIII-600 (it prefers Qe6+ before then): Time Depth Score Positions Moves 0:00 1/3 -0.92 3064 78...Qe6+ 79.Kg2 Qc6+ 80.Kg1 Qd5 0:00 1/4 -0.66 16994 78...Qe6+ 79.Kh2 Qd6 80.Qg1+ Ke4 81.Ra4+ Kf5 82.g4+ Kf6 0:01 2/5 -0.47 67826 78...Qe6+ 79.Kh2 Qd6 80.Qg1+ Ke4 81.Ra4+ Kf5 82.Qf2+ Kg6 83.Qd2 0:02 2/6 -0.57 198663 78...Qe6+ 79.Kh2 Qd6 80.Qg1+ Ke4 81.Ra4+ Kf5 82.Qf2+ Kg6 83.Rd4 0:07 3/7 -0.29 497283 78...Qe6+ 79.Kh2 Qd6 80.Qg1+ Ke4 81.Ra4+ Kf5 82.Qf2+ Kg6 83.Rd4 Rd5 0:27 3/7 -0.41 1911964 78...Ke4 79.Rf2 Qd7+ 80.Kh2 Rf5 81.Qe1+ Kd4 82.Qa1+ Kc4 83.Qa2+ Kb5 84.Qb3+ Kc6 85.Rb2 0:48 4/8 -0.32 3480686 78...Ke4 79.Rf2 Rf5 80.Qe1+ Kd4 81.Rb2 Qd7 82.Rb4+ Kc5 83.Qc3+ Kd6 84.Kh2 Ke7 85.Re4+ Kf8 86.Qh8+ Kf7 jm
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.