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Subject: ::sigh:: wac 17 problem

Author: Rick Bischoff

Date: 00:18:31 10/15/04


Hello,

I am in the process of running wac at 5 minutes to make sure everything is going
well.

[D]1k5r/pppbn1pp/4q1r1/1P3p2/2NPp3/1QP5/P4PPP/R1B1R1K1 w - - 0 1

 1    -388       0          3 1. Rxe4 fxe4
 1    -278       0          6 1. Qc2 Qxc4
 1      36       0          7 1. Bf4
 2      20       0         87 1. Bf4 Kc8
 2      22       0        238 1. Ne5 Rf6
 3      34       0        637 1. Ne5 Rf6 2. Bf4
 4      32       2       4002 1. Ne5 Rf6 2. Bg5 Rff8
 5     157      14      22842 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7
 6     157      59     106794 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7
 7     153     239     407638 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Nd5
 8     153    1059    1955992 1. Ne5 Qxb3 2. Nxd7+ Kc8 3. axb3 Kxd7 4. Rxa7 Rb6
5. c4
 9     143    4668    8221011 1. Ne5 Qxb3 2. axb3 Bxb5 3. Nxg6 Nxg6 4. Ra5 c6 5.
Bb2
 9     152   13537   24646838 1. b6 axb6 2. Ne5 Kc8 3. Nxg6 hxg6 4. Qxe6 Bxe6 5.
Bf4
move b6

I do not understand why it switched to this b6 line.  Here is the position after
the PV completed:
[D]2k4r/1pp1n1p1/1p2b1p1/5p2/3PpB2/2P5/P4PPP/R3R1K1 b - - 0 5

Now, I do have code the gives a pretty big bonus for open (and half open) files
around the king, but this line opens them up on both sides, thereby negating
that effect.  Is there some "deeper" chess meaning to this line?  Or more
likely, is my engine wacked?  i.e., why did it take almost 16,000,000 nodes on
ply 9?? My move ordering surely can't be that bad!  This is giving me a
headache.



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