Author: Dieter Buerssner
Date: 14:48:30 01/04/04
Go up one level in this thread
On January 03, 2004 at 10:40:40, Dan Andersson wrote:
>r5k1/3b2b1/1qn4p/p1p1pr1P/Pp1pN1Qp/1P1P4/2PB2BK/1R3R2 b - - 1 29
> This might be a better take on it. Avoid 29. .. Rxf1 since 30. Qxd7 Rf7 31. Qe6
>looks bad for black.
Not many answers until now. One might suspect, that it is difficult even for the
top commercial programs. After a very long search, I got:
2309959934 2:46:46 0.45 17. 29...Rxf1 30.Qxd7 Rf7 31.Qe6 Qc7 32.Bxh6 Nd8
33.Qg6 Kf8 34.Bxg7+ Rxg7 35.Rf1+ Nf7 {HT} {230}
1119662261 3:56:48 0.00 18t 29...Rxf1 30.Qxd7 Rf7 31.Qe6 Qc7 32.Bxh6 Nd8
33.Qg6 Kf8 34.Nf6 e4+ 35.Kh1 Qc6 36.Bxg7+ Rxg7
37.Nh7+ Kg8 38.Nf6+ Kf8 39.Nh7+H Kg8H 40.Nf6+H
Kf8HR {230}
3713705449 12:05:16 0.01 18t+ 29...Ne7 30.Nxc5 Bc8 31.Qxh4 Rxf1 32.Rxf1 Ra7
33.Ne4 Nf5 34.Qg4 Rf7 35.Qg6 Qxg6 36.hxg6 Rc7
37.Bh3 Ne3 38.Rf8+ Bxf8 39.g7
3063875558 18:58:59 0.03 18t 29...Ne7 30.Qxh4 Rxf1 31.Rxf1 Nf5H 32.Qg4H Rf8H
33.Ng3H Qf6H 34.Bxh6H Qxh6H 35.Nxf5H Rxf5H
36.Rxf5H {HT} {-150}
There was still no negative score after Rxf1. I looked a bit into the line, and
at the next depth, the score would most probably be negative.
Regards,
Dieter
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