Author: Laurence Chen
Date: 06:30:14 02/25/01
Go up one level in this thread
On February 25, 2001 at 06:09:58, Ernst Walet wrote: >On February 24, 2001 at 19:20:48, Sune Larsson wrote: > >> >> [D]8/7P/8/5Bk1/P7/8/1b4K1/8 b - - 0 1 >> >> This position arose from a game of mine vs CM8K. >> Black is on the move and has an easy draw. >> How do your programs evaluate this position? >> >> Sune > >Fritz6e on a PIII-500E with 100MB hash and all 3+4+5 men tablebases, cannot find >a draw after completing a 30 ply search. > >Ernst. > > >New position >8/7P/8/5Bk1/P7/8/1b4K1/8 b - - 0 1 > >Analysis by Fritz 6: > >1...Kxf5-- > +- (2.44) Depth: 1/2 00:00:00 >1...Kxf5-- > +- (2.44) Depth: 1/2 00:00:00 >1...Kxf5 2.a5 > +- (2.69) Depth: 2/5 00:00:00 >1...Bh8! > +- (2.66) Depth: 2/5 00:00:00 >1...Bh8! 2.Be6 > +- (2.59) Depth: 2/5 00:00:00 >1...Bh8 2.Be6 Kf6 > +- (2.47) Depth: 3/4 00:00:00 >1...Kxf5! > +- (2.44) Depth: 3/4 00:00:00 >1...Kxf5! > +- (1.97) Depth: 4/7 00:00:00 >1...Kxf5-- > +- (#18) Depth: 5/5 00:00:00, tb=1 >1...Kxf5-- > +- (#18) Depth: 5/5 00:00:00, tb=2 >1...Bh8! > +- (5.56) Depth: 5/5 00:00:00, tb=2 >1...Bh8! 2.Bc2 Kf6 3.a5 Ke5 > +- (2.84) Depth: 5/8 00:00:00 1kN, tb=2 >1...Bg7! > +- (2.81) Depth: 5/8 00:00:00 1kN, tb=2 >1...Bg7-- > +- (3.12) Depth: 6/9 00:00:00 2kN, tb=2 >1...Bg7-- > +- (3.12) Depth: 6/9 00:00:00 3kN, tb=2 >1...Bh8! > +- (3.09) Depth: 6/9 00:00:00 3kN, tb=2 >1...Bh8! 2.Bc2 Kf6 3.a5 Ke5 4.Kf3 > +- (3.00) Depth: 6/9 00:00:00 3kN, tb=2 >1...Bh8-- > +- (3.31) Depth: 7/10 00:00:00 6kN, tb=5 >1...Bh8-- 2.a5 Bd4 3.a6 Kxf5 4.a7 Bxa7 5.h8Q > +- (5.72) Depth: 7/10 00:00:00 8kN, tb=6 >1...Bd4! > +- (5.69) Depth: 7/12 00:00:00 11kN, tb=15 >1...Bd4! 2.a5 Kh6 3.a6 Kg7 4.Kf3 Kh8 > +- (3.47) Depth: 7/12 00:00:00 13kN, tb=16 >1...Bd4 2.a5 Kh6 3.Kf3 Kg5 4.Ke4 Bh8 5.a6 > +- (3.69) Depth: 8/12 00:00:00 17kN, tb=28 >1...Kh6! > +- (3.66) Depth: 8/12 00:00:00 19kN, tb=30 >1...Kh6! 2.a5 Kg7 3.a6 > +- (3.62) Depth: 8/12 00:00:00 20kN, tb=30 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 > +- (3.59) Depth: 9/12 00:00:00 27kN, tb=53 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.66) Depth: 10/13 00:00:00 39kN, tb=118 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Bf2 6.Ke5 > +- (3.72) Depth: 11/15 00:00:00 70kN, tb=250 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Bf2 6.Ke5 > +- (3.72) Depth: 12/15 00:00:00 114kN, tb=439 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.72) Depth: 13/17 00:00:01 198kN, tb=776 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.75) Depth: 14/17 00:00:01 310kN, tb=1311 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.72) Depth: 15/19 00:00:02 509kN, tb=2419 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.72) Depth: 16/21 00:00:03 782kN, tb=3810 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.72) Depth: 17/21 00:00:05 1252kN, tb=6660 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.87) Depth: 18/22 00:00:08 1872kN, tb=10072 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (4.03) Depth: 19/23 00:00:14 3293kN, tb=17713 >1...Kh6! > +- (3.72) Depth: 20/24 00:00:28 6440kN, tb=31490 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Kh8 5.Ke4 Ba7 6.Ke5 > +- (3.84) Depth: 21/24 00:00:39 9130kN, tb=43491 >1...Kh6-- > +- (4.16) Depth: 22/26 00:00:46 10648kN, tb=54937 >1...Kh6-- > +- (4.16) Depth: 22/37 00:08:56 232927kN, tb=97244 >1...Kh6! > +- (3.84) Depth: 23/30 00:10:14 250195kN, tb=166010 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.94) Depth: 24/30 00:11:39 269564kN, tb=238815 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.91) Depth: 25/32 00:14:51 315617kN, tb=417955 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.91) Depth: 26/34 00:20:15 396686kN, tb=705016 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.87) Depth: 27/34 00:30:23 553804kN, tb=1270998 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.87) Depth: 28/34 00:45:11 783668kN, tb=2118835 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.84) Depth: 29/35 01:19:22 1303244kN, tb=4061451 >1...Kh6 2.a5 Kg7 3.a6 Bd4 4.Kf3 Ba7 5.Ke4 Kh8 6.Kd5 > +- (3.78) Depth: 30/38 02:17:13 2192212kN, tb=7575338 The PV which Fritz 6e gives is a draw. The problem lies in the evaluation score. It sees that white has 2 passed pawn and there could be bonus points for passed points which is the reason for the high evaluation. Regards, Laurence
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