Author: Robin Smith
Date: 00:48:04 07/02/99
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On July 01, 1999 at 01:01:16, Peter Kappler wrote: >On June 30, 1999 at 18:03:14, Chuck wrote: > >>rn3rk1/pp2ppbp/6p1/8/3PP1b1/5N2/q2BBPPP/1R1Q1RK1 w - - 0 1 >> >>I had Hiarcs 7.32 search the above position for several hours to a depth of 11 >>ply, and it wants to play Rxb7 scoring this +0.69. However, in looking at Fritz' >>opening book, the move is not mentioned, only Bg5, Be3, and d5. >> >>This position arises from the Grunfeld Exchange, D85 as follows: >> >>1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 >>7. Nf3 c5 8. Rb1 O-O 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. O-O Bg4 >> >>I searched the 2 million games opening database and found six occurrences with >>no names that I recognized. In the six games, White drew 3 and lost 3 (1.5-4.5), >>so that indicates the pawn should be left alone. >> >>But this brings up my point? Is Hiarcs heading for trouble? Is the pawn >>poisoned, but in such a deep line that computers can't see it in reasonable >>time? And will all computers make this mistake, if it is one? >> >>I'm interested in what other computers and other people have to say about this >>position. How about it? >> >>Chuck > > >In my opinion, White cannot afford to give up his d-pawn, even if he wins the b >& e pawns in the process. A simple variation is Rxb7 Bxf3 Bxf3 Bxd4 Rxe7 Nc6 >where White has won back his gambit pawn, but Black's minor pieces are more >active and the passed a-pawn is very dangerous. > >I think White must preserve his "big center" in this position. > >--Peter In the line above, 15.e5 threatening both Bh6 and the discovered attack on a8 looks better for white than 15.Rxe7
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