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Subject: Re: Positional test move

Author: Art Basham

Date: 11:08:38 03/26/04

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Engine: Shredder 5
by Stefan Meyer-Kahlen
position:  0 17

  4.00	 0:00 	-0.15-- 	1...Nxe5 2.Nxe5 Qb6 3.Qxb6 (1.009) 1.6
  4.00	 0:00 	-0.71-- 	1...Nxe5 2.Nxe5 b5 3.Bxb5 Qxe5 (1.097) 1.8
  4.00	 0:00 	-0.81 	1...Nxe5 2.Nxe5 Qxe5 3.Qxe5 fxe5 4.Rxe5 (1.806) 2.7
  4.00	 0:00 	-0.80++ 	1...fxe5 2.Nxe5 Nxe5 3.Bxh7+ Kxh7 4.Qh6+ gxh6 (2.607) 3.6
  4.00	 0:00 	-0.64 	1...fxe5 2.Nxe5 Nxe5 3.Qxe5 Qxe5 4.Rxe5 Bd7 (4.148) 5.2
  5.00	 0:01 	-0.86 	1...fxe5 2.Nxe5 Nxe5 3.Qxe5 Qxe5 4.Rxe5 Bd7 5.Rfe1 (8.865)
6.7
  5.00	 0:01 	-0.85++ 	1...f5 2.Qf4 Rd8 (10.442) 7.2
  5.00	 0:01 	-0.56 	1...f5 2.Qc5 Rd8 3.a3 Bd7 (15.818) 8.1
  6.00	 0:03 	-0.60 	1...f5 2.Ng5 h6 3.Nf3 Bd7 4.Rd1 (31.419) 9.8
  7.01	 0:05 	-0.69 	1...f5 2.Ng5 h6 3.Nf3 Bd7 4.Rd1 Rac8 (60.868) 11.0
  7.02	 0:06 	-0.68++ 	1...fxe5 2.Nxe5 Nxe5 3.Qxe5 Qxe5 4.Rxe5 Bd7 5.f3 (74.231)
11.5
  7.02	 0:07 	-0.64 	1...fxe5 2.Nxe5 Nxe5 3.Qxe5 Qxe5 4.Rxe5 Bd7 5.a3 Rac8
6.Rfe1 (92.456) 12.4
  8.01	 0:21 	-0.80 	1...fxe5 2.Nxe5 Nxe5 3.Qxe5 Qxe5 4.Rxe5 Bd7 5.f4 Rac8 6.g3
h6 7.Rfe1 Kf7 (269.746) 12.3
  8.02	 0:23 	-0.79++ 	1...f5 2.Ng5 h6 3.Nf3 Bd7 4.Qf4 (290.217) 12.1
  8.02	 0:25 	-0.72 	1...f5 2.Ng5 h6 3.Nf3 Bd7 4.Qc5 Rac8 5.Qd6 (315.270) 12.2
  9.01	 0:43 	-0.76 	1...f5 2.Ng5 h6 3.Nf3 Bd7 4.Rd1 Rac8 5.Be2 Rf8 (500.553)
11.5
best move: f6-f5 time: 1:03.962 min  n/s: 12.099  nodes: 773.755

Shredder 5 is "not too sure" here what to do...:-)

Art





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?



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