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Subject: Re: Complicated position ...

Author: Vincent Lejeune

Date: 13:02:23 10/15/98

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On October 15, 1998 at 15:46:17, Ernst A. Heinz wrote:

>On October 15, 1998 at 14:29:35, Moritz Berger wrote:
>
>>I tried the position with Junior 5 on PII-450 (256 MB RAM, 128 MB hash tables).
>>I wouldn't trust any computer analysis in this position, though, it's very
>>complicated even for the best programs on fast hardware ...
>>
>>Moritz
>>
>>Initial position:
>>r1b3k1/pp2n1r1/2n1p2Q/3pPpNB/2p2q1P/P7/2P2PP1/R3R1K1 b - h3 0 1
>>
>>Analysis by Junior 5.0:
>>
>>20...c3 21.Re3 Bd7 22.Rae1 Qd4 23.Nxe6 Bxe6 24.Qxe6+ Kh7 25.Qf6
>>  -+  (-1.78)   depth: 14   00:00:38  13662kN
>>20...c3 21.Re3 Nxe5 22.g3 Ng4 23.Qxg7+ Kxg7 24.gxf4 Nxe3 25.fxe3 Ng6 26.Bxg6
>>Kxg6 27.Kf2
>>  ³  (-0.40)   depth: 16   00:01:53  41026kN
>>20...Nd8 21.Re3 Nec6 22.c3 d4 23.g3 Qxg5 24.hxg5 dxe3 25.fxe3 Nxe5 26.Rd1
>>  µ  (-1.32)   depth: 16   00:02:18  50099kN
>>20...Bd7 21.Rad1 c3 22.g3 Qa4 23.Nxe6 Bxe6 24.Qxe6+ Kh7 25.Qd7 Qxh4 26.Qxb7 Rh8
>>27.Bf3 f4
>>  -+  (-1.51)   depth: 16   00:03:35  77026kN
>>20...Qd4 21.Rad1 Qb2 22.Qf6 Nd8 23.Bf7+ Nxf7 24.Qxe7 Bd7 25.Nxe6 Bxe6 26.Qxe6
>>Rg4 27.Rxd5 Rxh4 28.Qxf5
>>  -+  (-1.70)   depth: 16   00:04:49  105737kN
>>20...Qd4 21.Rad1 Qb2 22.Qf6 Nd8 23.Bf7+ Nxf7 24.Qxe7 Bd7 25.Nxe6 Bxe6 26.Qxe6
>>Rg4 27.Rxd5 Rxh4 28.Qxf5
>>  -+  (-1.70)   depth: 16   00:04:49  105888kN
>>20...Qd4 21.Rad1 Qb2 22.Qf6 Nd8 23.Bf7+ Nxf7 24.Qxe7 Bd7 25.Nxe6 Bxe6 26.Qxe6
>>  -+  (-1.70)   depth: 17   00:06:31  143522kN
>>20...Qd4 21.Rad1 Qb2 22.Qf6 Nd8 23.Bf7+ Nxf7 24.Qxe7 Bd7 25.Nxe6 Bxe6 26.Qxe6
>>  -+  (-1.70)   depth: 17   00:07:51  167586kN
>>20...Qd4 21.Rad1 Qb2 22.Qf6 Nd8 23.Bf7+ Rxf7 24.Nxf7 Nxf7 25.Qxe7 Nxe5 26.Qg5+
>>Kf7 27.Qh5+ Ng6 28.Qh7+ Qg7 29.Qxg7+ Kxg7
>>  -+  (-1.42)   depth: 18   00:13:44  293349kN
>>20...Bd7 21.Rad1 c3 22.g3 Qa4 23.Nf7 Rxf7 24.Bxf7+ Kxf7 25.Qh7+ Kf8 26.Qh6+ Kg8
>>  -+  (-1.48)   depth: 18   00:17:11  367476kN
>>20...Bd7 21.Rad1 c3 22.g3 Qa4 23.Nf7 Rxf7 24.Bxf7+ Kxf7 25.Qh7+ Kf8 26.Qh6+ Kg8
>>  -+  (-1.48)   depth: 18   00:20:01  419756kN
>>20...Bd7 21.Rad1
>>  µ  (-1.18)   depth: 19   00:30:13  627583kN
>>20...Bd7 21.Rad1
>>  µ  (-1.18)   depth: 19   00:43:36  903055kN
>>20...Bd7 21.Rab1 b5 22.Re3 Rf8 23.g3 Qd4 24.Nxe6 Bxe6 25.c3 Qb6 26.Qxe6+ Kh7
>>27.Bd1 f4 28.Bc2+ Ng6 29.Bxg6+ Rxg6
>>  µ  (-1.27)   depth: 20   01:37:24  2081206kN
>>20...Bd7 21.Rab1 b5 22.Re3 Rf8 23.g3 Qd4 24.Nxe6 Bxe6 25.c3 Qb6 26.Qxe6+ Kh7
>>27.Bd1 f4 28.Bc2+ Ng6 29.Bxg6+ Rxg6
>>  µ  (-1.27)   depth: 20   02:00:00  2531581kN
>
>"DarkThought" switches to Qd4 after 1 min on a 600MHz Alpha-21164a and then
>wavers between Qd4 and Bd7 for a while. In the end it locks onto Bd7 as well.
>
>It scores the position after Bd7 as roughly +1.2 for Black (similar to
>Junior 5, see above).
>
>=Ernst=

Can I get the pv please ?
the previous seems to be not accurate ...

thanks



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