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Subject: Question for Prof. Hyatt

Author: Stuart Cracraft

Date: 08:33:17 02/22/06


[D]8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - -

Hi - this is WAC #2 and a position my program can't solve.
The solution is Rxb2.

How to make a program solve this problem in a way that carries over
to the similar class of positions?

In the printout below, score is in millipawns.

.ts
position file? [wac.epd] wac.epd
# of test positions to test? 1
maxtime = 99999900
Interrupt current ply and return move at timeout
Testsuite: Tests/wac.epd 1 positions
*** Problem   Solution(s): Rxb2 (bm)
-- ** -- ** -- ** -- **
** -- ** -- ** -- ** BP
-- ** -- ** -- BK -- **
** -- ** -- ** BP ** --
BP ** BP ** -- WP -- **
WP BR ** BP WP WK ** --
-- WP -- WR -- ** -- WP
** -- ** -- ** -- ** --
mv 1 stage 0, black to move, computer plays black
hash=a5e05373307344c6
0 0 0 0 0 0
Alpha=2627 Beta=3428 Maxdepth=9999999 MaxTime=99999900 xboard=0
Itr/Max  Mv Score Time    Nodes PV
 1/ 1> b3b2 3428  0.00        2 b3b2
 1/ 1  c4c3 3357  0.01       20 c4c3
 2/ 4< c4c3 2956  0.01       44 c4c3 d2d3
 2/ 4  f6g7   38  0.01      106 f6g7
 3/ 6  c4c3    8  0.02      493 c4c3 d2d3
 4/ 9  f6e7   12  0.04     1204 f6e7 f3g2 b3b6
 5/14  h7h5   21  0.08     3400 h7h5 f3f2 f6g7
 6/14> f6e6  421  0.14     6731 f6e6 f3g2 c4c3 d2d3 b3b2 g2h1
 6/14  f6e6  421  0.16     7677 f6e6 f3g2 c4c3 d2d3 b3b2 g2h1 h7h6
 7/15  c4c3   26  0.30    16084 c4c3 b2c3 b3c3 d2a2 h7h5 f3g3
 8/15> c4c3  426  0.43    23680 c4c3 b2c3 b3c3 d2a2 f6e6 h2h4 c3c4
 8/15  c4c3  934  0.60    34786 c4c3 b2c3 b3c3 d2b2 c3a3 b2b7 f6g6
 9/16< c4c3  533  0.89    51904 c4c3 b2c3 b3c3 d2b2 c3a3 b2b7 f6g6 b7b6 g6g7
b6b7 g7h8 f3g2 a3a2
 9/18  f6e7   15  1.90   116795 f6e7 d2d3 c4d3 h2h4 mtmt
10/21  b3b6   15  5.66   349319 b3b6
11/25  c4c3   25 20.19  1107635 c4c3 b2c3 b3c3 d2b2 c3a3 b2b7 f6g6 b7h7
12/29  c4c3   48 78.46  4098861 c4c3 b2c3 b3c3 e3e4 c3a3 f3e3 a3b3 d2d3 b3b2
13/33  b3b8   27 555.50 30561813 b3b8 e3e4 b8g8 f3e3 f5e4 e3e4 g8g4 d2d3 c4d3
e4d3

Thanks,

Stuart



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