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Subject: Re: Resign Score

Author: Uri Blass

Date: 05:54:34 11/20/02

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On November 20, 2002 at 08:14:52, Odd Gunnar Malin wrote:

>On November 20, 2002 at 07:40:57, Darren Rushton wrote:
>
>>What do most people consider a reasonable resign score to set in a .ini file?
>>
>>I looked at a few GM games and set Fritz, Hiarcs, whoever to analyse the score
>>when resignation occured.
>>
>>I concluded that between 400 and 500 centipawns is about the point, although
>>most programmers set to 700 as a default.
>>
>
>Just a little remark.
>
>I had the following line in my book:
>1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 5.Bxf7
>
>An exotic line in a book build upon some GM games. All GM's played 5.Bxf7 here
>as White but when I lunched the engine on ICC I saw that most players would play
>5.Nxf7 instead.
>Check your engine score here and after the right 5...Bxf2! and see if it will
>resign if it play as Black.
>
>The statistics say 73% score for Black!
>
>If you also use movecount in the resign algorithm you could adjust the resign
>score based upon opponent rating instead of having it constant.
>There is two factors to consider: You don't want to resign to fast, and you
>don't want to bother your opponent so that he don't comes back to play against
>your engine.
>
>Odd Gunnar

Analysis by movei after Bxf2+

depth=11 +3.45 e1f1 d8e7 f7h8 f2h4 d2d3 d7d5 e4d5 e7c5 d1e2 c8g4 e2e3
Nodes: 8164098 NPS: 150656
Time: 00:00:54.19

depth=11 +3.45 e1f1 d8e7 f7h8 f2h4 d2d3 d7d5 e4d5 e7c5 d1e2 c8g4 e2e3
Nodes: 17416198 NPS: 154467
Time: 00:01:52.75

depth=12 +3.48 e1f1 d8e7 f7h8 f2b6 d2d3 d7d5 e4d5 e7c5 d1f3 c8g4 f3g3 c6e7
Nodes: 27342733 NPS: 156539
Time: 00:02:54.67

depth=12 +3.48 e1f1 d8e7 f7h8 f2b6 d2d3 d7d5 e4d5 e7c5 d1f3 c8g4 f3g3 c6e7
Nodes: 35572204 NPS: 155486
Time: 00:03:48.78

depth=13 +3.24 e1f1 d8e7 f7h8 f2b6 d2d3 e7c5 d1e1 d7d5 e4d5 f6d5 c4d5 c5d5 b1c3
d5d4
Nodes: 61369731 NPS: 156316
Time: 00:06:32.60

I do not plan to resign at -4 but even with resigning at -4 movei is not going
to resign as black here.

Note that movei does not have king safety evaluation and I can imagine that with
king safety evaluation the score is going to be even less optimistic for white.

Uri



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