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Subject: Re: Has Shredder9 lost the tactical ability of Shredder 8?

Author: stuart taylor

Date: 05:27:14 02/09/05

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On February 08, 2005 at 12:41:45, robert flesher wrote:

>Here is a impressive clip from the chessbase site
>
>Here the move 1.Nxh7!! leads to a convincing win. For instance 1...Kxh7 2.Qh3+
>Kg8 3.f6 Nd4 4.Qh6 Ne6 5.Bxg6 fxg6 6.Rxd8 Bxg2+ 7.Kg1 Kf7 8.Qh7+ Ng7 9.Qxg7+ Ke6
>10.Qe7 mate. The theme is repeated in other black defences: 1...Nd4 2.f6+ Kxh7
>3. Qh3+ and Black is going to be mated after 3...Kg8 4.Qh6 Ne6 5.Bxg6 fxg6
>6.Rxd8 Bxg2+ 7.Kg1 Kf7 8.Qh7+ Ng7 9.Qxg7+ Ke6 10.Qe7#; or 1...Rxd3 2.Rxd3 Kxh7
>3.Qh3+ Kg8 4.Qh6 Nd4 5.fxg6 and mate to follow.

Why can black not play 1...Rh8, ? That in fact would be my first thought in over
the board play. 1...KxN is obviously a big question (after almost instant human
vision) IF black will survive.
S.Taylor

>
>The key move 1.Nxh7 was found by the previous version of Shredder on a 1 GHz
>PIII machine in 7 minutes and 20 seconds. Shredder 8 finds it in 1 minute 20
>seconds.
>
>Shredder has always been renowned for its excellent endgame technique. The
>evaluation of passed pawns is much more accurate in the new version, and
>combined with the increase in search depth this leads to the program's
>recognising pawn marches more efficiently.
>
>
>[D]3r1r2/pb3pkp/1pn2Np1/2p1PP2/8/b2BQ3/qP4PP/3R1R1K w - -



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