Author: Tord Romstad
Date: 10:37:41 09/15/03
Go up one level in this thread
On September 14, 2003 at 06:21:23, Sune Larsson wrote:
>
> [D]3r1rk1/4R3/5p1p/pQ2p2b/3pPq2/PP1P4/5PB1/5RK1 w - - 0 1
>
> This is a position from Shields,G - Schön,W, corr-2003.
>
> White played 32.Qxa5? and lost quickly after 32.-Bf3 33.Bxf3 Kh8!
> 34.Bg2 Rg8 35.Ra1 Qg4 36.Kf1 Qxg2+ 37.Ke2 Qg4+ 38.Kd2 Rc8 39.Rc7 Rxc7
> 40.Qxc7 Rc8 0-1.
>
> Much better was to keep black occupied on the 7th with 32.Qc4+ Bf7
> 33.Qc7 or 32.Qb7. ("And black has nothing serious" - Schön.)
>
>
> Test: Avoid 32.Qxa5 and instead choose one of the moves mentioned above.
Ouch. This was terrible. Gothmog 0.3.0 still does not avoid Qxa5 even
after 3900 seconds (1h 5m) on an Athlon MP 2.0 GHz. And the branching
factor is catastrophic. Finishing 11 plies takes 97 seconds, while
finishing 12 plies takes 3900 seconds.
I clearly have something to look at. Thanks a lot for the position!
Tord
>
>
> /S
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