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Subject: Re: Positional test move

Author: John Merlino

Date: 11:02:51 03/27/04

Go up one level in this thread


On March 26, 2004 at 13:49:45, Kurt Utzinger wrote:

>[D]r1b1r1k1/ppq3pp/2n1pp2/3pP3/8/2PBQN2/PP3PPP/4RRK1 b - - 0 17
>
>How long needs your engine to avoid 17...fxe5? which would be
>a positonal bad move since Black remains with a passive bishop
>on c8 and a weak backward pawn on e6. Best seems to close the
>centre with 17...f5 but other moves keeping the tension are
>also stronger than 17...fxe5?

CM9000, SKR personality on a P4-2.4, stays with fxe4 for over 5 minutes. It
definitely wants to trade off a lot of wood, and spent a lot of time thinking
about Rf8?! before finally switching to it:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.33	557		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5
0:00	1/4	0.34	1473		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5 Bd7 21.f4
0:00	1/5	0.27	6368		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5 Bd7 21.f4 Rac8
0:00	1/6	0.36	18433		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
0:00	1/7	0.38	59216		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5 Rd8 21.f4 Bd7 22.Rh5
					h6
0:00	1/8	0.43	134898		17...fxe5 18.Nxe5 Nxe5 19.Qxe5
					Qxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
					Rac8 23.Rd1
0:02	1/9	0.45	425284		17...fxe5 18.Nxe5 Qxe5 19.Qxe5
					Nxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
					Rac8 23.Rd1 Red8
0:05	1/10	0.43	1109447		17...fxe5 18.Nxe5 Qxe5 19.Qxe5
					Nxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
					Rac8 23.Bb3 b6 24.Rd1
0:13	1/11	0.52	2929887		17...fxe5 18.Nxe5 Qxe5 19.Qxe5
					Nxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
					Rac8 23.Bb3 b6 24.Rd1 Red8 25.f4
0:49	1/12	0.50	10316294	17...fxe5 18.Nxe5 Qxe5 19.Qxe5
					Nxe5 20.Rxe5 Bd7 21.c4 dxc4 22.Bxc4
					Rac8 23.Bb3 Red8 24.Rd1 Kf8 25.Re4
					Ke7
3:07	1/13	0.53	37999081	17...fxe5 18.Nxe5 Qxe5 19.Qxe5
					Nxe5 20.Rxe5 Bd7 21.c4 Bc6 22.Rfe1
					Bd7 23.Kf1 dxc4 24.Bxc4 Rad8 25.R5e2
					Rc8 26.Bxe6+ Bxe6 27.Rxe6 Rxe6
					28.Rxe6
5:24	1/13	0.49	63960983	17...Rf8 18.exf6 Rxf6 19.Ng5 h6
					20.Nf3 Qf4 21.Qe2 Bd7 22.Qc2 Rc8
					23.Bg6 Qg4

jm



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