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Subject: WAC018 position and WCrafty-17-12.exe

Author: Larry Griffiths

Date: 10:59:59 01/09/01

[D]R7/P4k2/8/8/8/8/r7/6K1 w - -

Hopefully this position will show up visually.

I have been testing my minmax again and using Crafty's perft command to verify
the possible moves at each ply.  I entered this WAC018 position using setboard
in crafty.  Crafty and I match until ply 5.

Crafty gets...

White(1): perft 1
total moves=9  time=0.00
White(1): perft 2
total moves=147  time=0.00
White(1): perft 3
total moves=2335  time=0.00
White(1): perft 4
total moves=39892  time=0.03
White(1): perft 5
total moves=731140  time=0.58
White(1):

My program gets...

Ply ---CAPTURES-- -----MOVES----- -----TOTAL-----
  1             0               9               9
  2            11             136             147
  3            31           2,304           2,335
  4         1,934          37,958          39,892
  5        12,323         718,979         731,302

Bob, have you discovered any move generation bugs in crafty since 17.12?
I will be looking at my move generation code for bugs, but I wonder if anyone
else can confirm if 731,140 or 731,302 is correct.

Thanks in advance,
Larry.

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