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Subject: Re: How many programs can find the winning move 52...Qe3+ ?

Author: Martin Andersen

Date: 09:07:14 08/06/03

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On August 06, 2003 at 11:49:38, Martin Andersen wrote:

>Crafty 19.3 found it eventually (after 33 min).
>Redhat 8.0, Athlon 2400+
>
>Depth:       19      Nodes: 2011286901 (1008134 n/s)
>Score:    -3.97      Time:   1995.06 seconds
>1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7 4. Kf1 Ka6 5. Ke2 Ka5 6. Kxe3 Kb4 7. Kf3
>Kc3 8. Ke2 g5 9. Ke3 g4 10. Ke2 g3 11. Ke3 g2 12. Kf2 Kxd3
>
>
>Martin.

Yace 0.99.50 was a bit faster ! (found it in 6 min).

14 -1.99  1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kg2 g5 5.Kf3 Kb6 6.Kxe3 Ka5 7.Ke2
Kb4 8.Kf2 Kc3 9.d4 exd4 10.Kg3 Kxc4 11.e5 d3 12.e6 d2 13.e7 d1=Q 14.e8=R
(360.42)
14 -2.01  1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kg2 g5 5.Kf3 Kb6 6.Kxe3 Ka5 7.Ke2
Kb4 {HT} {0} (369.87)
14 -2.01  1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kg2 g5 5.Kf3 Kb6 6.Kxe3 Ka5 7.Ke2
Kb4 {HT} {0} (411.31)
15 -2.41  ++ 1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kg2 g5 5.Kf3 Kb6 6.Kxe3 Ka5
7.Ke2 Kb4 8.Kf3 Kc3 9.d4 exd4 10.Ke2 d3+ 11.Kd1 Kxc4 12.e5 g4 {HT} {160}
(442.14)
15 -2.41  1...Qe3+ 2.Qxe3 dxe3 3.axb7 Kxb7 4.Kg2 g5 5.Kf3 Kb6 6.Kxe3 Ka5 7.Ke2
Kb4 8.Kf3 Kc3 {HT} {0} (462.83)

Martin.



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