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Subject: Re: PostModernist exchange sacs

Author: Andrew Williams

Date: 14:26:08 04/05/02

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This is what PM thought at the time:

 1>    27     0        16   16...c5
 1b    57     0        33   16...e5
 1b    61     0        86   16...Nc6
 1=    63     0       217   16...Nc6
 2=    63     0       352   16...Nc6
 3=    33     0       945   16...Nc6 17.Qd3
 4>    26     0      3363   16...Bc5 17.Bg5 Rb8
 4=    28     0      3464   16...Bc5 17.Bg5 Rb8
 5=    19     0      9957   16...Bc5 17.Bg5 Rb8 18.e5
 6>    12     0     28344   16...Rxf3 17.gxf3 Nxh2
 6=    12     0     29385   16...Rxf3 17.gxf3 Nxh2
 7=    12     0     73297   16...Rxf3 17.gxf3 Nxh2
 8>    12     1    179888   16...Nc6 17.h3 Nge5 18.Nxd4 Nxc4 19.bxc4 Nxd4
                            20.Rxd4 Bh2
 8=    17     3    569458   16...Nc6 17.h3 Nge5 18.Nxd4 Nxc4 19.bxc4 Nxd4
                            20.Rxd4 Bh2
 9=    17    10   1580142   16...Nc6 17.h3 Nge5 18.Ncxe5 Bxe5 19.Bg5 Rb8
                            20.Qd3 Qd6
10>    10    38   5794151   16...Rxf3 17.gxf3 Nxh2 18.a3 Nc6 19.Kg2
10=    16    39   5844924   16...Rxf3 17.gxf3 Nxh2 18.a3 Nc6 19.Kg2

NODES PER SECOND 147200

So it switched back and forth between Rxf3 and Nc6 and for several moves it
didn't see anything particularly wonderful in the position.

Looking at the log of the game, PM seemed to think that 21.Rd3 was dubious.
It was expecting 21.e5

I've noticed a few games recently where PM has opened up the h-file or g-file
against Sjeng and then gone on to lose the game if Sjeng survives the attack. In
fact, I've been thinking of modifying my code which rewards attacks on g8/h8 by
a Rook or Queen (assuming there's more Rooks/Queens to back up the attack)
simply because I've watched a couple against Sjeng where PM has badly
over-estimated an attack. I know it's not logical to make changes just because
I happen to be watching when something goes wrong, but it's very tempting
sometimes.

Cheers

Andrew





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