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Subject: Re: First mate in 2, then mate in 3

Author: Robert Hyatt

Date: 06:43:24 03/03/03

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On March 03, 2003 at 09:13:36, Albert Bertilsson wrote:

>Hi!
>
>During a recent game my engine reported that a mate in 2 was found, then after
>the next opponent move it reported that a mate in 3 was found. Does this
>indicate a bug in the engine?
>
>If it matters the opponent didn't followed the PV that engine displayed mate in
>2. But after the mate in 3 was claimed the opponent followed the PV until its
>defeat.
>
>/Regards Albert


It could be

(a) a bug in hashing, where you don't adjust the mate score before storing it,
or you
don't adjust it when you hit it in the table.

(b) your extensions make it easier to find the mate in 3 than the mate in 2 and
you quit
too soon.

• Re: First mate in 2, then mate in 3 Albert Bertilsson 07:09:46 03/03/03
  • Re: First mate in 2, then mate in 3 Ulrich Tuerke 07:52:54 03/03/03
    • Re: First mate in 2, then mate in 3, am I missunderstangin A-B? Albert Bertilsson 08:26:36 03/03/03
      • Re: First mate in 2, then mate in 3, am I missunderstangin A-B? Ulrich Tuerke 08:53:29 03/03/03
        • Re: First mate in 2, then mate in 3, am I missunderstangin A-B? Albert Bertilsson 09:03:53 03/03/03
      • Re: First mate in 2, then mate in 3, am I missunderstangin A-B? Ulrich Tuerke 08:31:29 03/03/03
    • Re: First mate in 2, then mate in 3 Uri Blass 08:21:02 03/03/03
      • you're right Ulrich Tuerke 08:51:04 03/03/03
      • Re: First mate in 2, then mate in 3 Ulrich Tuerke 08:26:27 03/03/03

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