Author: Gareth McCaughan
Date: 17:14:02 10/21/01
Go up one level in this thread
Terry McCracken wrote:
> On October 21, 2001 at 17:53:03, Andrew Smith wrote:
>
> > I hope this diagram works...
> >
> > [D]r1bk3r/1pp2pp1/p2p1n1p/5q2/8/4BN2/PPPQ1PPP/3RR1K1 w - -
> >
> > How long does it take your program to find the strong move Bb6! ?
Crafty 18.12, Athlon 1GHz, 48M+10M hash:
52 minutes to fail high on Bb6; 74 minutes to resolve
the fail-high with +1.63. From about 5 minutes to 52
minutes, it likes Qb4 with a score between +0.66 and +0.74.
It's at depth 13 that it decides Bb6 is good.
PV: Bb6 Nd5; Bxc7 Kxc7; c4 Qf4; Qxd5 Be6; Qd3 Bxc4;
Rc1 b5; b3 Rae8; bxc4 Rxe1+; Rxe1 bxc4.
The critical position is after Bb6 cxb6; Qxd6 Bd7;
Qxb6 Kc8; Re5. Crafty's assessment of the position
seems very unstable:
depth time eval PV
6 0.36 +1.70 ...Qg4; Rd4 Qg6; Rc5+ Kb8
6 0.48 0.00 ...Qg6; Rc5+ Bc6; Rd8+ Rxd8
6 0.61 -0.11 ...Qf4; Rc5+ Kb8; Ne5 Rc8
7 1.10 +0.96 ...Qf4; Rc5+ Bc6; Ne5 Nd5
7 1.56 0.00 ...Qg6; Rc5+ Bc6; Rd8+ Rxd8
8 3.92 +2.76 ...Qg6; Rc5+ Bc6; Rxc6+ bxc6
8 4.94 0.00 ...Qf4; Rc5+ Bc6; Rxc6+ bxc6
9 8.47 +1.82 ...Qf4; Qd6 Qa4; Rc5+ Bc6
10 26.11 +1.22 ...Qf4; Qd6 Qa4; Rc5+ Bc6
11 39.22 +1.52 ...Qf4; Qd6 Qa4; Rc5+ Bc6
12 1:54 +2.86 ...Qf4; Qd6 Nd5; Rdxd5 Bc6
and so on.
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