Author: odell hall
Date: 12:50:36 04/16/99
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On April 16, 1999 at 15:03:51, Paulo Soares wrote: >On April 15, 1999 at 23:15:08, odell hall wrote: > >>Hi >> >> >>The below position is taken from the Book Secrets of Chess Analysis by Jan >>timman. >> >>3q1rk1/1p3p2/r2p2pb/P1pP1n1p/2N2P2/1QPP4/6BP/1R3RK1 w - - id Geller - Spaasky; >> >> >>28. Be4!!! Timman remarks "White appreciates the strength of the strongpoint f5 >>and defers the capture on b7, which would give black the chance for a promising >>exchange sacrifice. 28. Qxb7, Rxa5 29.Nxa5, Qxa5 and now 29.Qb2(to be able to >>defend important weak points from d2 or c2). >> >> >>I tested rebel on this position and it simply could not resist the pawn on b7! >> However hiarcs6 after 82 sec Chose 28. Bh3!! which I think is about the same >>as Be4. In my opinion this is a excellent positional test for computer programs >>to see just how well they understand position. I suspect that only the strongest >>programs will be able to resist the juicy pawn on B7. I also Tested MChess 8 >>which chose Be4 after one minute thought and +76 evaluation. > > >Odell, > >PII-300 HT=32 > Move Depth Time(s) Eval(1 pawn=128) >Hiarcs7.01 Qxb7 9 317 +133 > Qxb7 10 441 + 82 > >Hiarcs7.01 when analyzing 3 moves(monitor mode): > Depth Move Eval(1 pawn=128) > 9 Qxb7 +134 > Be4 +134 > Bh3 +115 >Time: 240s(aprox.) > > >Fritz5.32 when analyzing 3 moves(infinite analysis): > Depth Move Eval > 12 Be4 +0.53 > Bh3 +0.53 > Qxb7 +0.53 >Time: 240s(aprox.) > > > As I wrote in my last post, the evaluations >are very seemed, it's difficult to conclude something in this >position. > My Hiarcs6 also considers 28.Qxb7. Your Hiarcs >is running as a Fritz engine? This could justify the differents >moves. Hi Paul No I am running The full program Hiarcs6 on cyrix 233, ofcourse I only let it think for 1 min 7 sec it comes up with Bh3 after this time period, but considers Qxb7 until then. According to Jan Timmnin Qxb7 is not good, thus he is the authority that I base my conclusions. I believe most strong masters would play be4 or bh3 instead of qxb7. Which is the point of my post. >Regards, > >Paulo Soares.
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