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Subject: Re: Move......Rg6........Too Risky for white...!

Author: David Dahlem

Date: 14:26:14 08/07/04

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On August 07, 2004 at 13:55:25, Rob Basham wrote:

>If this is a "good test move", then why don't some computers find it?
>Let's see what John Merlino has to say...:-)
>
>Even CM9000 will not play this! After black plays PXR, RXh6+ is not a forced
>win...IMHO.
>
>rob

CM9000 may not play Rg6 but it seems to like the Rg6 line. TheKing 3.23 engine
in Arena recommends this line up to Whites 32nd move:

29.Rgc1 Rgf8 30.Qe3 a3 31.b3 bxc3 32.Nxc3

Leading to this position:

[D]3r1r1k/3n1pp1/2p1b2p/3q3P/3P4/pPN1QP2/P7/KBR4R b - - 0 32

And gives an 0.15 advantage for White.

TheKing 3.23  UCI1:

12   02:36  0.15   32. ... Qd6 33.Ne4 Qd5 34.Rhg1 Rfe8 35.Bd3 Qxh5 36.Rh1 Qg6
37.Rxc6 Qg2 38.Nf2 Nf6

But if i play out the Rg6 line:

29.Rg6 fxg6 30.hxg6 Rge8 31.Rxh6+ Kg8 32.Rh7

leading to this position

[D]3rr1k1/3n2pR/2p1b1P1/3q4/pp1PNQ2/2P2P2/PP6/KB6 b - - 2 32

The evaluation is 1.05 for White.

TheKing 3.23  UCI1:

12   05:21  1.05   32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf8
37.Qe1 Kf7 38.dxc6 Rxd4 39.c7

That's the point of the original post, that engines can't find this better line,
even though it may not be a forced win. :-)

Regards
Dave



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