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Subject: Re: Test position - Does Bxh6 draw?

Author: Stuart Cracraft

Date: 18:40:39 03/06/06

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On March 06, 2006 at 21:25:01, Howard Exner wrote:

>[D] 8/6k1/6Pp/3r1P2/6K1/n3BP2/1p6/4R3 w - - 3 51 bm Bxh6;

Not sure. My program stops the Bxh6 early in the search.
I am not strong enough at chess to see why.

.sd 99
maxdepth = 99 maxtime = 9999999 timed = 0
.ts
position file? [wac.epd] tests.epd
# of test positions to test? 1
maxtime = 9999999
Interrupt current ply and return move at timeout
Testsuite: Tests/tests.epd 1 positions
*** Problem   Solution(s): 51 bm Bxh6 (3)
[D] 8/6k1/6Pp/3r1P2/6K1/n3BP2/1p6/4R3 w - - 3 51 bm Bxh6
*** Problem   Solution(s): 51 bm Bxh6 (3)
-- ** -- ** -- ** -- **
** -- ** -- ** -- BK --
-- ** -- ** -- ** WP BP
** -- ** BR ** WP ** --
-- ** -- ** -- ** WK **
BN -- ** -- WB WP ** --
-- BP -- ** -- ** -- **
** -- ** -- WR -- ** --
mv 1 stage 0, white to move, computer plays white
hash=11afe312d00b6b9
pawnhash=f23f44100f5df4d7
0 0 0 0 0 0
Alpha=2736 Beta=3537 Maxdepth=99 MaxTime=9999999 xboard=0
Itr/Max Mv   Score   Time Nodes PV
 1/ 3< e3h6 2736  0.00       37 e3h6 g7h6
 1/ 4  e3h6 -249  0.00      172 e3h6 g7h6
 2/ 7  e3h6 1  0.01      562 e3h6 g7h6 e1h1 h6g7 f3f4
 3/ 8< e3h6 -399  0.02     1533 e3h6 g7h6 e1h1 h6g7 f3f4 d5f5
 3/ 9  e3h6 -2364  0.03     2259 e3h6 g7h6 e1h1
 4/12> e3h6 -1963  0.04     3532 e3h6 g7h6 e1h1 h6g7 f3f4 d5f5 g4f5
 4/12  e3h6 -1963  0.05     5379 e3h6 g7h6 e1h1 h6g7 f3f4 d5f5 g4f5
 5/13  e1h1 -2104  0.12    14589 e1h1 h6h5 g4h5 b2b1Q h1b1 a3b1
 6/16  e1h1 -2077  0.28    37909 e1h1 b2b1Q e3h6 g7f6 h1b1 a3b1 g6g7
 7/18  e1h1 -2083  0.63    92931 e1h1 h6h5 g4h5 b2b1Q h1b1 a3b1 h5g4 g7h8
 8/21< e1h1 -2483  1.50   230472 e1h1 h6h5 g4h5 b2b1Q h1b1 a3b1 h5g4 g7f6 e3g5
f6e5 g5f4 e5d4
 8/21  e1h1 -2483  1.68   256277 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 b1b3 d5g5
g6f6 g4f4
 9/21> e1h1 -2082  2.04   309098 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 b1b3 d5g5
g6f6 g4f4 b3e6
 9/23  e1h1 -2082  3.27   496756 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 b1b3 d5g5
g6f6 g4f4 b3e6
10/26  e1h1 -2011  9.73  1447644 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 g6f6 e3d4
f6f7 d5h5
11/28  e1h1 -2410 22.32  3394887 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 g6f6 e3d4
f6e6 d5e5
12/33  e1h1 -2171 85.38 12384701 e1h1 h6h5 h1h5 b2b1Q f5f6 g7g6 h5d5 b1b4 d5d4
b4c5 d4e4 c5f5 g4g3 g
6f6 g3f2
13/35  e1h1 -2567 310.41 44571240 e1h1 h6h5 h1h5 b2b1Q f5f6 g7f6 h5d5 b1g6 d5g5
g6d3 e3f4
14/



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