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Subject: Re: Endgame test.

Author: Gareth McCaughan

Date: 01:57:22 10/07/01

Go up one level in this thread


Slater Wold wrote:

> Here is a position from a game I played recently.
>
> How long does it take other engines to get this move?
>
> [D]8/1kbQ2NK/4p2p/8/1p1p1P2/8/4q3/8 w - - 0 1
>
> Solution is Qxd4! and the game draws.

Crafty 18.11, Athlon 1GHz, takes about 15 1/2 hours
to switch from Nxe6 to Qxd4. It doesn't think it's
drawing (eval is about -2.6).

At the moment (nearly 60 hours in) it's working on
ply 20 and doesn't have an eval or a PV yet.
The PV at the end of ply 19 is:

1. Qxd4 Qc2+ 2. Kxh6 b3 3. Nxe6 b2
4. Nc5+ Kc6 5. Qd7+ Kb6 6. Na4+ Qxa4
7. Qxa4 b1=Q 8. Qd4+ Kc6 9. Qc4+ Kd6
10. Qd4+ Ke6 11. Qc4+ Kd7 12. Qf7+
Kc8 13. Qg8+ Bd8 14. Qe6+ Kc7 15. Qe5+
Kd7 16. Qd5+ Ke7 17. f5

(gosh! 33 ply.)

Crafty is alleged to be good at endgames, but if you're
right that Qxd4 draws then it could clearly do with some
improving...

--
g



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