Author: blass uri
Date: 14:06:53 10/17/98
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On October 17, 1998 at 13:25:20, Dirk Frickenschmidt wrote: > >Years ago I wondered why only very few of the dedicated computers were able to >play a so-called minority attack: this is a combined pawns and pieces attack >against the so-called Karlsbad pawn structure a7b7c6d5, most commonly known from >the Queen's Gambit Declined, exchange variation (examples of the below), but >also occuring elsewhere. It often is a useful attacking weapon to push the white >b-pawn to b5 to threaten to give black a hanging pawn on c6 and play on this and >the black squares (c5 etc) and the b-file (possibly 6th/7th row)afterwards. > >When after a long time I now checked two fundamental test positions, still >within the opening, with some newer programs (on MMX200 at tournament time), I >was surprised to see that not much seems to have changed: many of the programs >still play nonsense moves like Rac1 or even Rfc1 to get an half-open c-file, >which is of no big use for them. > >My question is, which of the newer programs are able to play minority attacks, >without getting the usual moves from their opening books (so you will have to >turn opening books of in my test positions)? > >Here are the two positions: > >Position 1 [D36] (Instructive sample game: Ftacnik-Ivanchuk, Moscow 1994, with a >draw but quite interesting possible variations on both sides) >1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Be7 7.e3 Nbd7 8.Bd3 0-0 >9.Nf3 Re8 10.0-0 Nf8, and which program will play >a) 11.Rab1 and after g6 >b) 12.b4 >by itself? Genius3 can find 12.b4 in this position but not 11.Rab1 It prefers a3 and after a longer time Rac1 Uri
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