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Subject: Re: Junior's Tactical Blind Spot?!?

Author: Len Eisner

Date: 08:36:10 01/10/99

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On January 10, 1999 at 06:26:53, Amir Ban wrote:

>On January 10, 1999 at 01:32:03, Len Eisner wrote:
>
>>I reached this position in a game against Junior 5 and Junior played hxg? which
>>loses to Qf5!.  How did Junior miss fxg holding the position?  It seems like an
>>obvious tactical mistake.
>>
>>1rq1r1k1/2p1bpp1/p1Qp4/3Np3/1PP3b1/P2PP1p1/3B1P1P/R1R3K1 w - - 0 1
>>
>>Len
>
>
>It's not that obvious, is it ? I see the continuation (1. hxg3) 1...Qf5 2. Qxc7
>Bf8 3. e4 Qh5 4. f3 Bxf3 5. Ne3 and black is better, but not winning. The black
>pieces on the back rank are very passive, and if white gets a rook on f1 or h1,
>he'll make trouble.
>
>I don't think Qf5 is specifically difficult for a computer. A human would have
>to think about Qf5 very carefully too.
>
>Amir


Amir,

Thanks for taking a look at the position.  After Qxc7 I thought that Bf3! was
winning for Black.

By the way, Junior is a GREAT program.  Sometimes us humans get lucky!

Len



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