Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Resign Score

Author: Uri Blass

Date: 06:22:43 11/20/02

Go up one level in this thread


On November 20, 2002 at 08:54:34, Uri Blass wrote:

>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

scores continues to go down and I stop the analysis

depth=14 +3.09 e1f1 d8e7 f7h8 f2b6 d2d3 e7c5 d1e1 d7d5 e4d5 f6d5 e1h4 c8e6 b1c3
c5f8 f1e1
Nodes: 262355892 NPS: 154555
Time: 00:28:17.49

After Bxf7+ Movei can see only a small advantage for white.

depth=11 -0.57 e8e7 f7d5 c6b4 b1c3 h8f8 d5b3 d7d6 g5f3 c8g4 d2d3 e7e8
Nodes: 11209785 NPS: 153685
Time: 00:01:12.94

depth=12 -0.70 e8e7 f7c4 h8f8 b1c3 c5f2 e1f2 f6e4 f2g1 e4g5 d2d4 e7e8 d1h5 g5f7
c4f7 f8f7 d4e5 d7d6 e5d6 d8d6 h5h7
Nodes: 46251526 NPS: 154171
Time: 00:05:00.00

Uri



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.