Author: Rafael Andrist
Date: 23:10:35 10/21/01
Go up one level in this thread
On October 21, 2001 at 18:22:26, Jon Dart wrote: >Recently Arasan had this position against Postmodernist: > >[D] 8/6P1/2B2n2/p4P2/P2k4/1pp5/1K6/8 w - - > >White played Kc1 and lost after ... c2 64. Kd2 Kc4 65. Bb5+ Kb4 66. Bd3 Kxa4 >67. Bc4 Ka3 68. Kc1. > >I think White is dead after Kc1 and has to play Kxb3 here. But it seems to be >extraordinarily difficult for a number of programs, including mine, to see that >this is bad. > Analysis by Wilhelm prefers Kxb3 1 0s 1.99 38 97 Kb2xb3! Kd4-d3 2 0s 2.00 313 467 Kb2xb3! Kd4-d3 Bc6-f3 3 1s 1.98 854 656 Kb2xb3! Kd4-d3 Bc6-b5+ Kd3-d4! Bb5-c4 4 1s 1.69 3344 1699 Kb2xb3! Kd4-d3 Bc6-b5+ Kd3-d2! Kb3-c4 c3-c2 5 1s 1.69 10546 4450 Kb2xb3! Kd4-d3 Bc6-b5+ Kd3-d2! Bb5-c4 c3-c2 g7-g8Q 6 4s 1.42 48610 15366 Kb2xb3! Kd4-d3 Bc6-b5+ Kd3-d2! Bb5-c4 c3-c2 g7-g8Q c2-c1Q 7 12s 1.69 161445 49026 Kb2xb3! Kd4-d3 Bc6-b5+ Kd3-d2! Bb5-c4 c3-c2 g7-g8Q c2-c1N+ Kb3-b2! Nf6xg8 If I clear Hashtables and move Kc1: 1 0s -0.37 16 43 c3-c2 2 0s -1.69 121 189 Kd4-e5 Kc1-d1 3 0s -1.73 643 734 Kd4-e5 Bc6-f3 Ke5xf5 4 0s -1.70 2894 1513 Kd4-e5 Bc6-f3 Ke5xf5 Kc1-d1 5 1s -1.98 14313 8314 c3-c2 Kc1-d2 Kd4-e5 Bc6-f3 Ke5xf5 6 7s -0.41 74333 42623 c3-c2 Kc1-d2 Kd4-e5 Bc6-d7 Nf6-e4+ Kd2-c1! Ne4-f6 7 27s -0.38 307435 174942 c3-c2 Kc1-d2 Kd4-e5 Bc6-d7 Ke5-f4 Bd7-e6 Nf6-e4+ regards Rafael B. Andrist
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