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Subject: Re: Deep Sjeng - Movei

Author: Uri Blass

Date: 11:31:57 07/07/04

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On July 07, 2004 at 08:48:06, Joachim Rang wrote:

>On July 07, 2004 at 08:45:14, Luis Smith wrote:
>
>>Would someone mind posting the position and an evaluation from an engine from
>>this game?  I don't have the resources to do it at the moment.
>
>
>
>Deep Sjeng - Movei [B07]
>WCCC 2004 Bar-Ilan (4), 07.07.2004
>[Wccc2004]
>
>1.e4 c6 2.d4 d6 3.Sc3 Sf6 4.f4 Da5 5.Ld3 e5 6.Sf3 exd4 7.Sxd4 Le7 8.Sf3 0-0
>9.0-0 Sbd7 10.Le3 Sc5 11.Dd2 Te8 12.Tab1 Sxd3 13.cxd3 b6 14.Tbc1 Sg4 15.Sd1 La6
>16.Dxa5 bxa5 17.Se1 c5 18.Ld2 Lf6 19.Lxa5 Ld4+ 20.Kh1 Txe4 21.dxe4 Lxf1 22.Sf3
>Ld3 23.Sxd4 cxd4 24.Tc6 Lxe4 25.Tc4 f5 26.Txd4 d5 27.Kg1 Kf7 28.Lc3 Td8 29.Sf2
>Td7 30.Sxg4 fxg4 31.Ta4 Tc7 32.Kf2 Kg6 33.g3 Kf5 34.Ke3 Te7 35.Ta6 Lf3+ Line
>
>slight advantage for white, but looks very drawish.
>
>regards Joachim

I can say that humans simply do not know to evaluate positions with
opposite colour bishops and they tend too much to evaluate them as a draw.

I remember that in the israeli league Rebel rejected  a draw offer from an FM
and won opposite colour bishop endgame when rooks were on the board.

With no rooks it is right to claim that it is often a draw.
I prefer to claim nothing when rooks are on the board.

I analyzd even theposition before 32...Kg6 and it is hard for black to defend it

It is possible that movei blundered by Nxg4
I will check later but maybe reducing the panelty for doublepawns from 0.2 pawns
to 0.15 pawns caused movei to blunder.

I did it because I noticed that other programs have smaller panelty and results
in tests against itself were slightly positive for panelty of 0.15 pawns but I
am not sure if it was justified.

Uri



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