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PostPosted: Sun May 14, 2017 07:53 
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Joined: Tue Aug 14, 2012 22:24
Posts: 128
Real name: Catherine Bourneuf
Hi all,

I thought since a week about a theory:

If an engine B use the same eval function than an other A.
If the win margin of A against engine C is almost 15%
and win margin of B against C is almost 40%

Please, Is it possible to have the same eval function and don't have the same strenght? Thank

Catherine.


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PostPosted: Sun May 14, 2017 12:15 
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Joined: Wed Apr 14, 2004 16:04
Posts: 1559
Catherine wrote:
Hi all,

I thought since a week about a theory:

If an engine B use the same eval function than an other A.
If the win margin of A against engine C is almost 15%
and win margin of B against C is almost 40%

Please, Is it possible to have the same eval function and don't have the same strenght? Thank

Catherine.


Of course, because strength = search + eval. If search of A is worse than B, then B would be stronger.


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PostPosted: Mon May 15, 2017 04:41 
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Joined: Tue Aug 14, 2012 22:24
Posts: 128
Real name: Catherine Bourneuf
Rein Halbersma wrote:
Catherine wrote:
Hi all,

I thought since a week about a theory:

If an engine B use the same eval function than an other A.
If the win margin of A against engine C is almost 15%
and win margin of B against C is almost 40%

Please, Is it possible to have the same eval function and don't have the same strenght? Thank

Catherine.


Of course, because strength = search + eval. If search of A is worse than B, then B would be stronger.


Hi,

Thank, this is clear now.
So the search speed it's an important factor in the strenght of an engine.
I asked this because if i take into account the BMI2 of Joost that apparently increase search speech, Argus 1.0A6x64 is very fast some tests are been done on core i5 with 8Go of Ram Windows 8.1

PS: this it's just to have answer to my question about the relationship between search speed and stregnht.

Blitz game beetween Scan 2.0 , Kingsrow 1.58, Argus 1.0A6 and Argus 10A7
1min/90 moves
hash size 512
no endgame database
no pondering
no opening book

1rst 20 test games: Kingsrow 1.58 versus Argus 1.0A7 that seem have same strenght than Scan 2.0
Attachment:
KVA7_1-3_nobookegdb_1min[1].pdn [21.77 KiB]
Downloaded 31 times


2nd 20 test games: Kingsrow 1.58 versus Argus 1.0A6 that seem to be very fast
Attachment:
KVA6_0-15_nobookegdb_1min[1].pdn [22.08 KiB]
Downloaded 27 times


3rd 20 test games: Kingsrow 1.58 versus Scan 2.0
Attachment:
KVS_1-3_nobookegdb_1min[1].pdn [21.77 KiB]
Downloaded 33 times


4th 20 test games: Scan 2.0 versus Argus 1.0A6
Attachment:
SVA6_0-9_nobookegdb_1min[1].pdn [21.48 KiB]
Downloaded 32 times




158 dxpgames 2 ballots game beetween Scan 2.0 , Kingsrow 1.58, Argus 1.0A6
10min/90 moves
hash size 512
no endgame database
no pondering
no opening book

1rst 158 dxpgame: Kingsrow 1.58 versus Argus 1.0A6
Attachment:
KVA_5-24_nobookegdb_10min[1].pdn [183.83 KiB]
Downloaded 29 times


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PostPosted: Mon May 15, 2017 04:51 
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Joined: Tue Aug 14, 2012 22:24
Posts: 128
Real name: Catherine Bourneuf
2nd 158 dxpgame: Kingsrow 1.58 versus Scan 2.0
Attachment:
KVS_3-9_nobookegdb_10min[1].pdn [175.81 KiB]
Downloaded 37 times


--Catherine


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PostPosted: Tue May 16, 2017 08:16 
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Joined: Thu Jun 20, 2013 17:16
Posts: 558
Real name: Krzysztof Grzelak
Specify what are the results of matches between programs and improve the configuration of some programs.


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