Author: Chessfun
Date: 09:45:39 05/06/02
Go up one level in this thread
On May 06, 2002 at 09:27:55, Jeroen van Dorp wrote: >>GambitTiger 2 aggressive just had played Qe3-a3+ with +8.32/10. So he saved the >>game as WIN for white. >>In opposite Gandalf saved the game as DRAW because of an eval of 0.00 since >>several moves. >>So I continued the game manually to see which of both is right. Guess who was >>it. :-) > >I agree with Gandalf (and with Dan). I think it's at least a drawish position. >It's not the evaluation that wasn't right, but it went wrong with the move >84..Kg3 by Gandalf. This is where it seems the problem is. Gandalf takes too long to get off 84...Kg3. 84...Kf3 also looks drawish with the line posted by Gandalf. TB 1400 mhz all 3,4 and 5 piece tablebases. 7q/7P/8/5pp1/2Q2k2/8/8/3K4 b - - 0 1 Analysis by Fritz 7: 1...Kg3-- ² (0.44) Depth: 12/32 00:00:12 3577kN, tb=579 1...Ke3! ² (0.41) Depth: 12/32 00:00:18 6144kN, tb=921 1...Ke3! = (0.25) Depth: 12/32 00:00:21 7789kN, tb=1320 1...Ke3! 2.Qe2+ Kf4 3.Qc4+ = (0.00) Depth: 12/32 00:00:23 8808kN, tb=1731 1...Ke3 2.Qe2+ Kf4 3.Qc4+ = (0.00) Depth: 13/32 00:00:30 11640kN, tb=2887 1...Ke3 2.Qe2+ Kf4 3.Qc4+ = (0.00) Depth: 14/35 00:01:30 27680kN, tb=7296 7q/7P/8/5pp1/2Q2k2/8/8/3K4 b - - 0 1 Analysis by Crafty 18.14: 15...Kg3 16.Qg8 Qd4+ 17.Kc2 Qc5+ 18.Kd3 Qd6+ 19.Kc4 Qc6+ 20.Kd4 ± (1.16) Depth: 13/31 00:01:06 23974kN, tb=10253 15...Ke3 16.Qg8 Qd4+ 17.Kc2 Qd3+ 18.Kb2 Qd4+ 19.Kb3 Qb6+ 20.Kc4 Qc6+ 21.Kb4 Qb6+ 22.Kc4 = (0.00) Depth: 13/31 00:02:30 54362kN, tb=17883 Gandalf 5.1 00:02:42.1 -0.57 13 18404881 Kg3 Qg8 Qd4+ Ke2 Qe4+ Kd2 Qb4+ Kd3 Qd6+ Kc4 Qc6+ Kd4 Qd6+ Kc4 00:05:23.4 -0.86 13 27982872 Kg3 Qg8 Qd4+ Kc2 Qc5+ Kd3 Qd6+ Kc4 Qc6+ Kd4 Qd6+ Qd5 Qb6+ Qc5 Qd8+ Kc4 Qh8 Qxf5 g4 Qd3+ Kh4 00:08:10.6 -0.86 13 53377793 Kf3 00:10:41.7 -0.51 13 91017258 Kf3 Qg8 Qd4+ Kc2 Qe4+ Kc3 Qe5+ Kc4 Qc7+ Kd5 Qd7+ Ke5 Qe7+ Kxf5 Qe4+ Kf6 Qd4+ Kg6 Qd6+ Kg7 Qd4+ Kh6 Qf6+ Qg6 Sarah. >After 84...Kg3 85. Qg8 black can't contain the white king to prevent it running >to the other side of the board, either attacking the black pawns or hiding with >it's queen. > >With Ke3 the black queen has coverage after Qg8 Qd4+ Kc2 Qd3+. But maybe you >knew this already. Correct me if I'm wrong. Nevertheless, I think endgame study >is much more interesting than opening lines :) Thanks for posting it and make me >crunch my braincells. (yuk) :) > >J. > >70... Ka6-b5 >71. Qa3-b3+ Kb5-c5 >72. Qb3-e3+ Kc5-d5 >73. Kf3-g2 Qf6-h8 >74. Qe3-e7 Qh8-b2+ >75. Kg2-f1 Qb2-a1+ >76. Qe7-e1 Qa1-h8 >77. Qe1-a5+ Kd5-e4 >78. Qa5-a4+ Ke4-e3 >79. Qa4-b3+ Ke3-f4 >80. Kf1-e2 Qh8-e5+ >81. Ke2-d2 Qe5-d4+ >82. Qb3-d3 Qd4-b2+ >83. Kd2-d1 Qb2-h8 >84. Qd3-c4+ Kf4-g3
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