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Subject: Re: Testposition - Tactics

Author: Dieter Buerssner

Date: 18:55:51 06/21/01

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On June 21, 2001 at 17:15:59, Sune Larsson wrote:

> 4k2r/rp5p/pR4p1/4qp2/3pp1PQ/8/2P4P/R5K1 w k - 0 28
[...]
>  Test 1: Can your program find the move 28.Ra5!! - evals?

Yace cannot find this within 5 minutes

>  Test 2. After 28.Ra5!! Qxa5 can your program find 29.Qf6! - evals?

Neither this. After 29. Qf6 I get the following:

     nodes  time    score depth
  10633446  1:32.0  11.97 10.  29...Qe1+ 30.Kg2 Qe2+ 31.Kg1 Qxg4+ 32.Kf1 Qd1+
                               33.Kg2 Qxc2+ 34.Kh3 Qd3+ 35.Kh4 {980}

score is obviously from the point of view of the side to move (black).

When I do the suggested moves, the scores "approach" zero with time. E.G. after
more then ten moves, the score is around 3 (I have done all the suggested moves
after rather short time - few second). I have no hope, that Yace would
understand this with any reasonable time. Only at move 49, Yace shows
drawing score fast (=within seconds).

Regards,
Dieter




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