Author: Robin Smith
Date: 17:28:31 06/11/00
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On June 09, 2000 at 20:12:54, Bruce Moreland wrote: >On June 09, 2000 at 19:33:08, Robin Smith wrote: > >>This game and position reminds me very much of one I just finished in the US >>correspondence chess championship. In the following position: >> >>[D]8/4kpp1/1pQ4p/p7/P2q4/3P2P1/2P2P1P/6K1 b >> >>black played 34. ... Qd6? and lost after 35.Qxd6+ Kxd6 36.Kf1 b5 37.Ke2 bxa4 >>38.Kd2 and white easily stops the a pawn and wins. After the game I was >>surprised to find that even after very long "thinks" programs seem to >>want to avoid playing 35.Qxd6, even though it is not at all hard (for a human)to >>see that white can stop the a-pawns, and after that white's connected c & d >>pawns are unstopable. The only exception I found was Fritz6a, which finds Qxd6 >>fairly quickly. >> >>Maybe this position would make a good test position? >> >>Robin Smith > >I think the position is too hard to really test anything. I bet that programs >want to play c4 right away as white in order to stop from "losing" the a-pawn. > >A good to test might be where white chooses to "lose" the pawn. > >bruce For whatever reason, Fritz6a DOES want to play 35.Qxd6, along with the CORRECT PV (as played in the game). Fritz6a seems to understand that the connected c&d pawns are stonger than blacks outside passed a pawn(s). So this position is NOT too hard for at least ONE program. Robin Smith
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