Author: Dann Corbit
Date: 10:12:40 01/17/03
Go up one level in this thread
On January 17, 2003 at 04:39:34, Harald Faber wrote: >On January 17, 2003 at 03:51:55, Dann Corbit wrote: > >>On January 17, 2003 at 03:23:20, Harald Faber wrote: >> >>>On January 17, 2003 at 03:21:03, Dann Corbit wrote: >>> >>>>On January 17, 2003 at 03:16:06, Harald Faber wrote: >>>> >>>>>On January 17, 2003 at 02:33:37, Dann Corbit wrote: >>>>> >>>>>>> r1r2b1k/1bq2p1p/p1npp1p1/2nB2P1/4P1NQ/2p1B2R/PPP2P1P/2KR4 b - - >>>>>>> Depth Time Score Best line >>>>>>> 13/38 11:59 3.37 ... h5 Nf6 Bg7 bxc3 Qa5 Qxh5+ gxh5 Rxh5+ Bh6 Rxh6+ >>>>>>> Kg7 Rh7+ Kf8 g6 Ne5 Bxc5 dxc5 g7+ Ke7 Bxb7 Qa3+ Kb1 >>>>>>> Kxf6 Bxa8 Rxa8 >>>>>>> 13... 14:52 5/37 f5 >>>>>> >>>>>>cxb2 is definitely fool's gold. But it looks like h5 wins (also according to >>>>>>Chessmaster 9000): >>>>>> >>>>>>Time Depth Score Positions Moves >>>>>>9:26 2/11 -3.69 68760452 1...h5 2.Nf6 Bg7 3.bxc3 exd5 4.Qxh5+ >>>>>> gxh5 5.Rxh5+ Bh6 6.Rxh6+ Kg7 7.Rh7+ >>>>>> Kf8 8.Rh8+ Ke7 9.Nxd5+ Kd7 10.Nxc7 >>>>>> Kxc7 11.Rh7 >>>>> >>>>> >>>>>What about 1...h5 2.Nf6 Bg7 3.Qg4!? >>>>>E.g.: 3...Bxf6 4.Rxh5!! Kg8 (4...Kg7 is #7; 4...gxh5 5.Qxh5 also #7) 5.gxf6 >>>>>cxb2+ 6.Kb1 +-. It is hardly possible to find a defense against 6.Rh8+ Kxh8 >>>>>7.Qh4+ and soon mate. 5...Qb6 does not save: 6.b3 and still the threat on h8/g7 >>>>>decides. >>>>>The only way seems to be 3...Qb6, e.g. 4.bxc3 Bg7 5.Qxh5+ gxh5 6.Rxh5+ Bh6 >>>>>7.Rxh6+ Kg7 8.Rh7+ Kf8 9.Bxc5 Qxc5 10.Nd7+ and now draw by 10...Kg8 11.Nf6+ or >>>>>unjustified try to play for a win with 10...Ke7 11.Nxc5. But wait, 5.Qg4 in this >>>>>variation also seems to be quiet strong with similar variations as above. >>>>> >>>>>So finally I do not see any defense for the plan Qg4 and Rxh5. Do you? >>>> >>>>ChessMaster 9000 still sees an advantage for black after Qg4 (see my follow-up >>>>to the original CM listing). >>> >>> >>>Yes, but CM does not have 4.Rxh5+!! in his PV. What is CMs opinion after you >>>force this move on your board? >> >>Good question. It may also be that the pawn capture is awakened again. I think >>this position is awfully complicated, and it will take a lot of effort to come >>to sure conclusions. > > >At the moment I am absolutely convinced that 1...h5 in your line is kind of >blunder and loses the game. >So 1...f5 and 1...cxb2+ have to be analyzed more detailed. From the posted starting position, Chess Tiger 14 does not find the best move (as is clear from the negative score): [D]r1r2b1k/1bq2p1p/p1npp1pN/2nB2P1/1p2P2Q/2N1B1R1/PPP2P1P/2KR4 w - - ce -148; acd 17; acs 14400; pv Bxc5 dxc5 Bxc6 Bxc6 Nb1 Bb5 Rh3 Be2 Ng4 h5 Rg1 a5 Nf6 Bd6 Nd2 Bf4 Re1 Bc4 e5;|Be3c5 From the "position in question" it appears that the pawn capture may be the best move, but a deeper search will be needed I am sure. [D]r1r2b1k/1bq2p1p/p1npp1p1/2nB2P1/4P1NQ/2p1B2R/PPP2P1P/2KR4 b - - ce 468; acd 14; pv cxb2+ Kb1 h5 Nf6 Bg7;|cb2
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