Author: Robert Hyatt
Date: 20:48:56 10/11/00
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On October 11, 2000 at 02:21:40, Jim Monaghan wrote: >[D] 2k5/2p5/1q1p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 w - - 0 1 > >A. Petrosian - Hazai, 1970 As Dr. Nunn states in his annotations Black's >position is quite bad and he tried Qa7-b6 last move and White couldn't resist >snapping off the queen ... and drawing. The correct scheme is to reject the >"gift" and play Qd2, Kb3, Nc3, Ka4, Na2-c1-b3 and Qxa5 with Black just watching. > I gave this to Crafty 17.13 ... > >20 4:33 5.32 1. Nxb6+ cxb6 2. h4 gxh4 3. Qc1 h3 > 4. gxh3 h4 5. Kb3 Kd7 6. Kc3 Bf2 7. > Kd3 Ke7 8. Qd2 Bg3 9. Qc2 <HT> > >Is there a program that "understands" the idea of a blockade, or is this still a >tough area for programmers ... where ply depth doesn't really help but something >in it's evaluation function? From a human standpoint the concept is not that >complex although A. Petrosian stumbled ... > >Cheers, > >Jim I really don't deal with this case, because there is practically no chance that anyone could force crafty into a position like this, as it tries _so_ hard to prevent leverless positions.
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