Author: martin fierz
Date: 14:45:45 03/28/02
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On March 28, 2002 at 15:55:15, Roy Eassa wrote: > >[d] rn1qkbnr/pbpp2pp/1p2p3/5P2/2PP4/3B4/PP3PPP/RNBQK1NR b KQkq - 0 4 > >The GM annotator to a game says that White wins as follows if Black plays >5...Bxg2, but Fritz does not agree: > >"5...Bxg2 6.Qh5+ g6 7.fxg6 Bg7 8.gxh7+ Kf8 9.Bg5!! Nf6 10.Qh4 Bxh1 11.Ne2 >planning Nf4, and even a rook down, White's attack is too strong." > >Fritz thinks Black is better here, with 11...Na6 or 11...Kf7 being best. > >Is 5...Bxg2 really bad? If so, is this line the refutation? If so, how does >White continue i did a quick chessbase search, and this line has been played with black by people like miles and short (when he was a kid) and psakhis and shabalov. first, they took the pawn with 5...Bxg2 (miles did), later, after 9.Bg5 was discovered, they refrained from taking it, and went for 5...Bb4+ instead (miles also did). in the end, miles took the pawn again: Yermolinsky,C - Miles,A (2609) [A40] World Open Philadelphia USA (2), 28.06.1999 1.d4 e6 2.c4 b6 3.e4 Bb7 4.Bd3 f5 5.exf5 Bxg2 6.Qh5+ g6 7.fxg6 Bg7 8.gxh7+ Kf8 9.Bg5 Nf6 10.Qh4 Bxh1 11.Ne2 Bf3 12.Nf4 Nc6 13.Nd2 Bg4 14.Ng6+ Kf7 15.Ne5+ Nxe5 16.dxe5 Bf5 17.Bxf5 exf5 18.exf6 Bxf6 19.Qh5+ Kg7 20.Qh6+ Kf7 21.Qh5+ Kg7 22.Qh6+ ½-½ not many people play it though as black... your sample line after ...Kf7: 11...Kf7 12.Nf4 Nc6 13.Bg6+ Kf8 14.Nh5 Nxd4 15.Nd2 Nf5 16.Bxf5 exf5 17.Nxf6 Qe7+ 18.Kd1 Bxf6 19.Bxf6 Qxh7 -/+ i'm not sure about why miles played Bf3, but i guess it was to stop white from castling long. so i would suggest 11...Kf7 12.Nd2 (to stop Bf3 and the castling). i'm not surprised by the way that fritz sees a black advantage, fritz is more on the materialistic side as far as the programs go. someone might try gambit tiger on this? i played as white against fritz to produce the following line: 11...Kf7 12.Nd2 Nc6 13.0-0-0 Nb4 14.Bb1 Bb7 15.Rg1 c5 16.Nf4 Nxa2+ 17.Kd1 Nb4 18.Nh5 and now it sees that it's lost. note how white first calmly develops and castles and brings the rook into play, before going for Nf4-h5. it's very hard for black to do anything in this position. i think that it's already over after 13. OOO in this line, which of course, fritz does not see yet. but white just can build up a huge attack. aloha martin
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