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Subject: Re: Who is right here? Man or machine

Author: Uri Blass

Date: 07:45:13 05/10/03

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On May 10, 2003 at 09:08:37, Drexel,Michael wrote:

>>
>>You said that Fritz also likes white.
>>
>>I also think that 0.41 is not a big advantage for white so if the position is
>>equal than it is not a big mostake(espacially when I remember that shredder's
>>scores are higher than the scores of the opponent and it often say +2 in
>>positions that another program says +1
>>
>>Uri
>
>IMO the position is already slightly better for black e.g. Black should at least
>get a draw here and should win against top programs because they dont understand
>the position and probably wont find the best defence.
>When black is developed and the pawns in the center begin to march over the
>board they take away good squares for the white pieces.
>What do you think about my little experiment regarding mobility?

I do not know.
I also do not understand the position.

Can you show me errors of the top programs when you play against them.

If mobility is not important there then
I need exact definitions to explain it.

I suspect that pawns in the centre is not enough and there may be positions when
mobility is more important.

What if you give white only one tempo

[D]rnbqkb1r/pp1np1pp/4p3/2pp4/3P4/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 0 6




>
>[D] rnbqkb1r/pp1np1pp/4p3/2pp4/3P4/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 6
>
>Shredder 7.04   depth 1/2 (0.41)
>Ruffian 1.01    depth 1/2 (-0.71)
>Crafty 19.03    depth 1/7 (-0.32)
>Yace Paderborn  depth 1   (-0.44)
>
>[D] rn1qk2r/ppbnpbpp/4p3/2pp4/3P4/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 6
>
>Shredder 7.04   depth 1/2 (-0.49)
>Ruffian 1.01    depth 1/2 (-1.01)
>Crafty 19.03    depth 1/8 (-0.69)
>Yace Paderborn  depth 1   (-0.83)
>
>Difference:
>
>Shredder 7.04    0.92
>Ruffian 1.01     0.32
>Crafty 19.03     0.37
>Yace Paderborn   0.39
>
>Michael

Latest Movei agree with Shredder
Movei scores are dependent not only on the leaf position and they may be wrong
at depth 1 so here is comparison at depth 2:
+0.31 for the first position
-0.66 for the second position

depth 7:
+0.30 for the first position
-0.66 for the second position

Uri



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