Author: John Merlino
Date: 11:46:51 02/19/03
Go up one level in this thread
On February 19, 2003 at 12:00:09, Will Singleton wrote: >On February 19, 2003 at 10:20:25, martin fierz wrote: > >>On February 19, 2003 at 09:27:01, Steffen Jakob wrote: >> >>>Hi all, >>> >>>Brutus gave a pawn in the first round as black against Yace: >>> >>>[D]2rq1rk1/3nbppp/p2p4/n2Pp3/Pp2P3/4B2P/1PBNQPP1/R1R3K1 b - - 0 20 >>> >>>Here he played 20... Bg5. The current position is >>> >>>[D]3q1rk1/3n1ppp/Q2p4/n1rPp3/Pp2P3/4P2P/1PBN2P1/R1R3K1 w - - 0 23 >>> >>>Looks interesting. >> >>looks good for black to me! ...Bg5 gets rid of the bad bishop, and white is >>stuck with his - in addition, black gets control of the c-file and white a >>doubled pawn. this should easily be worth the measly pawn :-) >>if brutus wins this i'd say ...Bg5 is a good test move. if not, disregard my >>post ;-) >> >>cheers >> martin > >I tried a few programs on this, the two alternatives Nc5 and Bg5 score about the >same. Ruffian and Tao like Nc5, while Comet, Yace and Amateur will play Bg5. I >guess it depends mainly on the open file and doubled pawn scoring. > >It could be that the file isn't so important, since white can trade off the >rooks. > >Will Chessmaster 9000 plays Bg5 all the way (analysis on a P3-733): Time Depth Score Positions Moves 0:00 1/3 0.96 1095 20...Bg5 21.Qxa6 Bxe3 22.fxe3 0:00 1/4 0.81 2828 20...Bg5 21.Bxg5 Qxg5 22.Nf3 Qh6 23.Qxa6 0:00 1/5 0.59 8413 20...Bg5 21.Qxa6 Bxe3 22.fxe3 Qc7 23.Qb5 0:00 1/6 0.69 20533 20...Bg5 21.Bd3 Rxc1+ 22.Rxc1 Bxe3 23.fxe3 Nc5 24.Bxa6 Nxa4 0:01 1/7 0.69 57152 20...Bg5 21.Bd3 Rxc1+ 22.Rxc1 Bxe3 23.fxe3 Nc5 24.Bxa6 Nxa4 0:01 1/8 0.69 102044 20...Bg5 21.Bd3 Rxc1+ 22.Rxc1 Bxe3 23.fxe3 Nc5 24.Bxa6 Nxa4 0:04 1/9 0.55 275757 20...Bg5 21.Bd3 Rxc1+ 22.Rxc1 Bxe3 23.fxe3 Nc5 24.Bxa6 Nxa4 25.Rc8 Qe7 0:10 1/10 0.55 787278 20...Bg5 21.Bd3 Rxc1+ 22.Rxc1 Nc5 23.Bxa6 Bxe3 24.fxe3 Nxa4 25.Rc8 Qe7 0:25 2/11 0.45 1991441 20...Bg5 21.Bd3 Bxe3 22.fxe3 Rxc1+ 23.Rxc1 Nc5 24.Bxa6 Nxa4 25.Rc8 Qb6 26.Rxf8+ Kxf8 1:19 3/12 0.52 6340428 20...Bg5 21.Qxa6 Bxe3 22.fxe3 Nc5 23.Qe2 Ra8 24.Rf1 Qe7 25.Rf5 b3 26.Bd3 Rfc8 3:39 4/13 0.36 18273740 20...Bg5 21.Qxa6 Bxe3 22.fxe3 Rc5 23.Bd1 Qg5 24.Kf2 f5 25.Bf3 f4 26.Rxc5 Nxc5 27.Qxd6 fxe3+ 28.Kf1 10:02 5/14 0.40 50880079 20...Bg5 21.Qxa6 Bxe3 22.fxe3 Rc5 23.Bd1 Qg5 24.Qe2 Rfc8 25.Rxc5 Nxc5 26.Bc2 b3 27.Bd3 Qg3 28.Nf3 Nxd3 29.Qxd3 jm
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