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Subject: Re: Small Bug in Chest UCI

Author: Heiner Marxen

Date: 06:53:58 05/24/04

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On May 23, 2004 at 18:24:40, Drexel,Michael wrote:

>[D] 2rq1k1r/2pb1p2/3p2p1/3Pp3/4P3/2N1QpP1/PPP2P2/R4RK1 b - - 0 19
>
>New game,
>2rq1k1r/2pb1p2/3p2p1/3Pp3/4P3/2N1QpP1/PPP2P2/R4RK1 b - - 0 1
>
>Analysis by ChestUCI Ver.3.5:
>
>19...Qf6
>  -+  (-#6)   Depth: 6   00:00:11  2404kN
>19...Qf6 20.Qh6+ Rxh6 21.Rab1 Qh8 22.a3 Rh1#
>  -+  (-#6)   Depth: 6/6   00:00:11  4103kN
>
>The mainline is a mate in 4.

Yes, that is incorrect, 20.Qh6+ is inferior.  Neither Chest 3.19 nor my
current development version exhibit this bug:

2rq1k1r/2pb1p2/3p2p1/3Pp3/4P3/2N1QpP1/PPP2P2/R4RK1 b - - acn 4103219; acs 17; bm
 Qf6; ce 32756; dm 6; pv Qf6 Na4 Bh3 Qh6+ Rxh6 Nb6 cxb6 g4 Bg2 g5 Rh1#;

Franz?  Any idea what's going on?

>Michael

Thanks for pointing out!

Cheers
Heiner

• Re: Small Bug in Chest UCI F. Huber 07:15:34 05/24/04
  • Re: Small Bug in Chest UCI Heiner Marxen 07:54:21 05/24/04
    • Re: Small Bug in Chest UCI: cannot be repaired easily Heiner Marxen 13:10:36 05/26/04

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