Author: Robert Hyatt
Date: 06:02:09 03/16/01
Go up one level in this thread
On March 16, 2001 at 02:49:30, Mark Young wrote:
>New position
>[D]2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - 0 1
>
>
>Some positions as this will likely be fixed by faster hardware... before the
>programmers figure them out with a software fix. If hardware improvments keep at
>its current pace. Fun Position.
Crafty has solved this many times on fast hardware. Here is a run from a
21264/600mhz alpha, produced by Tim Mann last year:
15-> 5.04 1.88 1. ... Rh7 2. Rb1 Rh5 3. Kg4 Bb7 4.
Ba3 Kd7 5. Bc5 Rh2 6. Kg3 Rh8 7. Rb2
Rh5 8. Kf4 Rh2
16 11.66 1.88 1. ... Rh7 2. Rb1 Bb7 3. Ra1 Ba6 4.
Rb1 Rf7 5. Ba3 Rf5 6. f4 Kd7 7. Rb2
Bb5 8. Bd6 Bc6 9. Kf3
16 27.49 ++ 1. ... Rb4!!
16 41.84 2.96 1. ... Rb4 2. cxb4 a4 3. Rb1 Kb5 4.
f3 a3 5. Ra1 b2 6. Rxa3 b1=Q 7. Ra5+
Kb6 8. Bc5+ Kb7 9. Rb5+ Kc6 10. Rb6+
Kc7 11. b5 Qf5
16-> 41.84 2.96 1. ... Rb4 2. cxb4 a4 3. Rb1 Kb5 4.
f3 a3 5. Ra1 b2 6. Rxa3 b1=Q 7. Ra5+
Kb6 8. Bc5+ Kb7 9. Rb5+ Kc6 10. Rb6+
Kc7 11. b5 Qf5
Took that machine 27.5 seconds to find this...
>
>Analysis by Fritz 6:
>
>1...a4!
> -+ (-1.75) Depth: 1/2 00:00:00
>1...a4!
> -+ (-2.25) Depth: 1/2 00:00:00
>1...a4--
> -+ (-1.94) Depth: 2/5 00:00:00
>1...a4--
> -+ (-1.94) Depth: 2/5 00:00:00
>1...a4 2.Kf4 Kb5
> -+ (-2.03) Depth: 3/5 00:00:00
>1...a4 2.Kf4 Kb5 3.Ke3
> -+ (-1.84) Depth: 4/7 00:00:00
>1...a4 2.Kf4 Kb5 3.Ke3 Ra7
> -+ (-1.91) Depth: 5/10 00:00:00
>1...Rf7!
> -+ (-1.94) Depth: 5/10 00:00:00 1kN
>1...Rf7! 2.f4 a4 3.Kf3 Ra7
> -+ (-2.00) Depth: 5/10 00:00:00 1kN
>1...Rf7 2.f4 Rh7 3.Ba3 a4 4.Kf2
> -+ (-1.88) Depth: 6/10 00:00:00 2kN
>1...Rf7 2.f4 Kb5 3.Ba3 Ka4 4.Bd6 Bb7
> -+ (-2.09) Depth: 7/13 00:00:00 7kN
>1...Rf7 2.f3 a4 3.Kf2 Rf5 4.Be7 Bb7 5.Ke3
> -+ (-1.84) Depth: 8/15 00:00:00 17kN
>1...Rf7 2.Ba3 a4 3.f4 Rh7 4.Rh2 Rb7 5.Rb2 Rb8
> -+ (-2.09) Depth: 9/15 00:00:00 30kN
>1...Rf7 2.f3 a4 3.Ba3
> -+ (-2.06) Depth: 10/17 00:00:00 67kN
>1...Rf7 2.f3 Bb7 3.Ba3 Kb5 4.Kf2 Ka4 5.Bd6 Rf5 6.Be7
> -+ (-2.16) Depth: 11/19 00:00:00 200kN
>1...Rf7 2.f3 Bb7 3.Ba3 Kb5 4.Kf2 Rh7 5.Ke3 Rh5 6.Be7
> -+ (-2.00) Depth: 12/20 00:00:00 332kN
>1...a4!
> -+ (-2.03) Depth: 12/20 00:00:00 419kN
>1...Rh7!
> -+ (-2.06) Depth: 12/22 00:00:00 557kN
>1...Rh7! 2.Rb1 a4 3.Ba3 Bb7 4.Kf4 Rh4+ 5.Ke3 Rh5 6.Kf4
> -+ (-2.16) Depth: 12/23 00:00:01 764kN
>1...Rh7 2.Rb1 a4 3.Ba3 Bb7 4.Kf4 Rh4+ 5.Ke3 Rh5 6.Kf4
> -+ (-2.16) Depth: 13/25 00:00:01 1020kN
>1...Rh7 2.Rb1 a4 3.Ba3 Bb7 4.Kf4 Rh4+ 5.Ke3 Rh5 6.Kf4
> -+ (-2.16) Depth: 14/27 00:00:02 1632kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.Kf4 Rh3 5.f3 Rh2 6.Rb2
> -+ (-2.19) Depth: 15/30 00:00:03 2899kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.Kf4 Rh3 5.f3 Rh2 6.Bb2
> -+ (-2.19) Depth: 16/27 00:00:06 4952kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.Kf4 Rh3 5.f3 Rh2 6.Bb2
> -+ (-2.22) Depth: 17/32 00:00:15 11648kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.Kf4 Rh3 5.Bb2 Kb5 6.Kg4
> -+ (-2.25) Depth: 18/35 00:00:25 19580kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.Kf4 Rh3 5.Bb2 Kb5 6.Kg4
> -+ (-2.25) Depth: 19/37 00:00:43 33341kN
>1...Rh7 2.Rb1 a4 3.Ba3 Rh5 4.f4 Bb7 5.Kg2 Rh4 6.Kg3
> -+ (-2.13) Depth: 20/38 00:01:39 75647kN
>1...Rd7!
> -+ (-2.16) Depth: 20/39 00:03:07 145157kN
>1...Rd7 2.Ba3 Rh7 3.Rb1 Rh5 4.f4 a4 5.Kg2 Rh4 6.Kg3
> -+ (-2.13) Depth: 21/39 00:03:49 178556kN
>1...Rd7 2.Ba3 Rh7 3.Rb1 Rh5 4.f4 a4 5.Kg2 Rh4 6.Kg3
> -+ (-2.13) Depth: 22/41 00:05:53 274417kN
>1...Rd7 2.Ba3 Rh7 3.Rb1 Rh5 4.f4 a4 5.Kg2 Rh4 6.Kg3
> -+ (-2.13) Depth: 23/43 00:10:12 474019kN
>1...Rh7!
> -+ (-2.16) Depth: 23/43 00:12:15 567771kN
>1...Rb4!
> -+ (-2.19) Depth: 23/43 00:18:48 876142kN
>1...Rb4!
> -+ (-2.50) Depth: 24/45 00:30:56 1442923kN
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