Author: Christophe Theron
Date: 16:18:54 02/06/04
Go up one level in this thread
On February 06, 2004 at 13:48:48, Jaime Benito de Valle Ruiz wrote:
>This endgame study can be game following the sequence
>
>1.Bd1 g1Q 2.Bxa4 Qc1 3.Bxd7 h5 4.Be8 h4 5.Ba4 Line
>
>[d] 8/3p4/p6p/k2N3B/p7/K6p/PP4pP/8 w - - 0 1
>
>Many engines (Fritz 8, Hiarcs 8, Ruffian 1.01) cannot win this endgame, probably
>due to the well known null-move problem for extreme and rare positions such as
>this.
>
>They just don't find 5. Ba4
>
>Try your engine after 4...,h4
>
>[d]8/3p4/p6p/k2N3B/p7/K6p/PP4pP/8 w - - 0 1
>
>All the above mentioned engines play 5.Bd7 and get a draw instead of winning.
>
>Regards,
>
> Jaime
Chess Tiger X: 1.15 second on PIII-M 933MHz (Dell X200), 6Mb HT:
N14 0.33s Bd1 g1=Q Bxa4 Qc1 Bxd7 h5 Be8 h4 Bd7 Qxb2+ Kxb2 0.00
N15 0.66s Bd1 g1=Q Bxa4 Qc1 Bxd7 h5 Be8 h4 Bd7 Qxb2+ Kxb2 +0.90
N15 1.15s Bd1 g1=Q Bxa4 Qc1 Bxd7 h5 Be8 h4 Ba4 Qxb2+ Kxb2 Kxa4 Kc... +3.26
Christophe
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