Author: Dann Corbit
Date: 07:29:18 03/06/02
Go up one level in this thread
On March 06, 2002 at 00:55:15, Uri Blass wrote: >On March 05, 2002 at 23:19:39, Terry McCracken wrote: > >>On March 05, 2002 at 15:27:58, Dann Corbit wrote: >> >>>On March 05, 2002 at 13:35:06, Uri Blass wrote: >>> >>>>On March 05, 2002 at 11:43:35, Dann Corbit wrote: >>>> >>>>>On March 04, 2002 at 17:43:29, Albert Silver wrote: >>>>> >>>>>>The following position occurred in Spassky-Beliavsky, Reykjavik, 1988 >>>>>> >>>>>>2b1qrk1/5p1p/pBn3p1/1p2p3/4P2N/bBP1Q3/P4PPP/3R2K1 w - - >>>>>> >>>>>>Spassky found a tremendous move 25.Nxg6!! and won the game. I don't think any >>>>>>engines will have much luck with it but feel free to try it. I've analyzed it in >>>>>>detail and can verify that it is the strongest move and correct, so as a further >>>>>>challenge, see if you can find the *strongest* continuation after the possible >>>>>>defense: 25...hxg6 26.Qh6 Be6!? >>>> >>>> >>>>This defence was discussed by albert silver and by me >>>> >>>>25.Nxg6 hxg6 26.Qh6 Be6 27.Rd3 f5 >>>>28.Rg3 Rf6 29.Rh3 Kf7 30.Qh7+ Kf8 31.exf5 Bxb3 32.axb3 >>>>seems to be decisive for white >>>> >>>>Yace proved 1.20 pawns for white in the root position for Nxg6 based on some >>>>analysis that is based mainly on this line. >>> >>>The two lines (first the yace line, then the crafty 1 hr analysis:) >>>W B W B W B W >>>Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rg3 Rf6 Rh3 Kf7 Qh7+ Kf8 exf5 Bxb3 axb3 c0 "seems to >>>be decisive for white"; >>>Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rh3 Kf7 Qh7+ Kf6 Qh4+ Kg7 Bxe6 Qxe6 exf5 Qg8 Qh6+ Kf6 >>>fxg6 Ke6 Rd3 Qh8 Qd2 Kf6 >>> >>>Agree out to Rg3 verses Rh3. So I went to Rg3 and analyzed what would happen >>>there: >>>[D]4qrk1/8/pBn1b1pQ/1p2pp2/4P3/bBP3R1/P4PPP/6K1 b - - acd 14; acn 546692901; acs >>>1001; c0 "after Nxg6 hxg6 Qh6 Be6 Rd3 f5 Rg3"; ce 82; pv Rf6 Rh3 Kf7 Bd5 Ke7 c4 >>>Bb4 Qg7+ Qf7 Qh8 Qf8 Bxc6 Qxh8 Rxh8 Bxc4; >>> >>>I remain unconvinced that this line is better. >> >>Really? Without the use of a computer and bieng a bit of a tactician, and >>looking over the evidence by computers as well, I feel confident Nxg6!! is >>without a doubt the strongest continuation. >> >>I'm confident I could win with White after the tactical shot Nxg6!! against >>anyone!:o) >> >>Terry > >I only feel sure that Nxg6 is a clear advantage for white but I do not feel sure >that white has no alternative good move. > >Nxg6 seems to be the best move based on computer's analysis because it wins at >least a pawn. > >I do not feel sure that I could win the game after Nxg6 against the best >defence because being a pawn up is not enough to win and you need also to play >well later(there are cases when even playing well later does not help against >the best defence). Yes. I was not clear in my meaning. I did not mean to say that Nxg6 was not a good move. Only that I am not yet convinced it is better than all of the alternatives. In particular, Nf3 and c4 are both very promising.
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