Author: Peter Stayne
Date: 22:20:47 04/20/05
I was analyzing the 'Something to grind on' position from a thread below (the resulting analysis follows this question), and left it for an hour and a half. at around the 1:15 mark, the kn/s dropped from an average of 1200 to 46 and stayed pegged at that. I checked task manager and the cpu charts, which are usually pegged at 100% were shooting erratically up and down, with no other processes eating up any significant cpu time. Perhaps I simply exhausted my hash? (1024MB hash out of 2048MB RAM), maybe Windows was starting to page the search out to VM on the disk? Any ideas? Interesting that, very late in the game, DS9 chose b4! Pete New game, [D]5r2/ppp3k1/5r1p/7P/8/2B5/PPP5/5R1K w - - 0 1 Analysis by Deep Shredder 9 UCI: 1.Bxf6+ = (0.03) Depth: 1/2 00:00:01 1.Bxf6+ = (0.03) Depth: 2/5 00:00:01 1.Bxf6+ Rxf6 2.Kg2 = (0.11) Depth: 2/5 00:00:01 1.Kg2 = (0.12) Depth: 2/6 00:00:01 1.Kg2 b6 = (0.12) Depth: 2/6 00:00:01 1.Kg2 b6 2.Kg3 c5 3.Kg4 a6 4.Bxf6+ Rxf6 = (0.23) Depth: 3/6 00:00:01 1.Kg2 b6 2.Kg3 c5 3.Kg4 a6 4.Bxf6+ Rxf6 = (0.23) Depth: 4/6 00:00:01 1.Kg2 b6 2.Kg3 c5 3.Kg4 a6 4.Bxf6+ Rxf6 = (0.23) Depth: 5/7 00:00:01 1.Kg2 b6 2.Kg3 c5 3.Kg4 a6 4.Bxf6+ Rxf6 = (0.23) Depth: 6/13 00:00:01 19kN 1.Kg2 b6 2.Kg3 c5 3.Kg4 a6 4.Bxf6+ Rxf6 = (0.23) Depth: 7/13 00:00:01 27kN 1.Kg2 b5 2.Rf5 b4 ² (0.35) Depth: 8/14 00:00:01 68kN 1.Rf5 ² (0.36) Depth: 8/14 00:00:01 82kN 1.Rf5 c6 2.Kg2 b5 3.Kf3 a5 4.Bxf6+ Rxf6 ² (0.41) Depth: 8/14 00:00:01 91kN 1.Rf5 c6 2.Kg2 b6 3.Kf3 a5 4.Bxf6+ Rxf6 5.Ke4 Rxf5 ² (0.45) Depth: 9/14 00:00:02 114kN 1.Rf5 c6 2.Kg2 b6 3.Kf3 a5 4.Ke4 Re8+ 5.Kf4 Ree6 6.Bxf6+ Rxf6 ² (0.43) Depth: 10/14 00:00:02 155kN 1.Rf5 b6 2.Kg2 c5 3.Kf3 a6 4.Ke4 Re8+ 5.Kf4 Ree6 6.Bxf6+ Rxf6 ² (0.45) Depth: 11/18 00:00:02 281kN 1.Rf5 c6 2.Kg2 b6 ² (0.59) Depth: 12/20 00:00:03 531kN 1.Rf5 a6 2.Kg2 b6 ² (0.59) Depth: 13/21 00:00:03 758kN 1.Rf5 R8f7 2.Kg2 c6 3.Kf3 a6 ² (0.58) Depth: 14/25 00:00:04 1211kN 1.Rf5 c6 2.Kg2 a6 ² (0.58) Depth: 15/25 00:00:05 2002kN 1.Rf5 R8f7 2.Kg2 b6 ² (0.61) Depth: 16/28 00:00:06 3292kN 1.Rf5 b6 2.Kg2 c6 3.Kf3 a6 ² (0.64) Depth: 17/29 00:00:06 5255kN 1.Rf5 b6 2.Kg2 a6 3.Kf3 b5 4.Ke4 Re8+ 5.Kd5 Ree6 6.b4 c6+ 7.Kc5 Kf7 8.Bxf6 Rxf6 9.Re5 Rf2 10.c3 Rxa2 ² (0.63) Depth: 18/31 00:00:07 7373kN 1.Rf5 b6 2.Kg2 R8f7 3.Kf3 c6 4.Be5 a6 ± (0.75) Depth: 19/34 00:00:10 12565kN 1.Rf5 a6 2.Kg2 c6 3.Kf3 a5 4.Ke4 b6 5.Be5 a4 ± (0.76) Depth: 20/35 00:00:14 18661kN 1.Rf5 b6 2.Kg2 R8f7 3.Kf3 a6 ± (0.77) Depth: 21/37 00:00:20 26665kN 1.Rf5 R8f7 2.Kg2 c6 3.Kf3 a5 4.b3 b6 ± (0.85) Depth: 22/39 00:00:34 43712kN 1.Rf5 b6 2.Kg2 a6 ± (0.92) Depth: 23/39 00:01:02 81992kN 1.Rf5 R8f7 2.Kg2 a6 ± (0.93) Depth: 24/40 00:01:38 120690kN 1.Kg2 ± (0.94) Depth: 24/46 00:02:10 159425kN 1.Kg2 R8f7 ± (0.94) Depth: 24/51 00:03:38 269628kN 1.Kg2 R8f7 ± (1.19) Depth: 25/51 00:04:32 340752kN 1.Kg2 a5 2.a4 Kf7 +- (1.59) Depth: 25/51 00:08:12 626245kN 1.b4 +- (1.60) Depth: 25/51 00:08:43 655807kN 1.b4 R8f7 2.Rf5 b6 3.Kg2 +- (1.69) Depth: 25/51 00:09:30 716596kN 1.b4 R8f7 2.Kg2 Rf8 3.Rf5 c6 4.Kf2 R8f7 5.Kf3 Rf8 6.Be5 R8f7 7.Ke4 Rf8 8.c4 +- (1.70) Depth: 26/51 00:11:30 867040kN 1.b4 R8f7 2.Rf5 b6 +- (1.72) Depth: 27/51 00:12:34 950522kN 1.b4 b5 2.Rf5 +- (1.79) Depth: 28/51 00:20:22 1538650kN 1.b4 R8f7 2.Rf5 c6 3.Kg2 Rf8 +- (1.86) Depth: 29/57 00:32:39 2433662kN 1.b4 R8f7 2.Rf5 Rf8 3.Kg2 R8f7 4.Kf3 Rf8 5.Kf2 +- (1.99) Depth: 30/57 00:42:37 3164216kN 1.b4 b5 2.Rf5 a6 3.Kg2 Kf7 +- (2.03) Depth: 31/57 00:57:01 4117940kN (Milkman, home 21.04.2005)
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