Author: Laurence Chen
Date: 08:43:38 01/11/99
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On January 10, 1999 at 11:36:10, Len Eisner wrote: >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 Perhaps in the next version of Junior this tactical blindness can be corrected. It is interesting to note that Junior fails to see the threat Bf3! which Fritz 5.32 evaluates as winning for Black (-+ 2.59).
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