Author: Robin Smith
Date: 20:51:12 03/04/06
In the following obscure opening Rybka comes up with a TN pawn sac that seems highly dubious to me: 1.d4 Nf6 2 c4 e5 3 dxe5 Ng4 4 Nf3 Bc5 5 e3 Nc6 6 Be2 O-O 7 O-O Re8 8.Qd5 [D] r1bqr1k1/pppp1ppp/2n5/2bQP3/2P3n1/4PN2/PP2BPPP/RNB2RK1 b - - 0 8 Here Rybka wants to play 8...d6?! but it doesn't seem to me that Black has enough compensation for the pawn. Of perhaps more theoretical interest, after 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 [D] rn1qkb1r/p1pp1ppp/bp2pn2/8/2PP4/5NP1/PP2PP1P/RNBQKB1R w KQkq - 0 5 Rybka for a while considers 5.Nc3?! (later dropping this move to its second choice, but still seeing a slight white advantage if you force 5.Nc3). How can Rybka be so successful in engine tournaments conducted with small opening books if it is so willing to enter into dubious sacs? Or am I missing something and these sacs are actually sound? -Robin
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