Author: Dave Gomboc
Date: 18:27:02 09/10/01
Go up one level in this thread
On September 10, 2001 at 05:56:21, Uri Blass wrote: >On September 10, 2001 at 05:02:43, Gian-Carlo Pascutto wrote: > >>On September 10, 2001 at 00:48:34, Dave Gomboc wrote: >> >>>>>>>>>32.Bg5 Bg7 33.Bf4 c4 34.Re2 Bd7 35.Rd1 Bb5 36.Ree1 Bxa4 37.bxa4 Rb2 >>>>>>>>>38.Rd2 Rxa2 39.Bxf5 >> >>>>>Black has better earlier on: >>>>> >>>>>Instead of 36. .. Bxa4 first 36. .. Nd3! >>> >>>It looks like White also has better earlier on: >>> >>>36.Bxe5! Nxe5 >> >>Bxe5 captures the knight, so Nxe5 is obviously impossible. I think >>you are looking at the wrong line... >> >>36.Bxe5 Bxe5 is a straight win for black > >Dave meant 36.Bxe5 Bxe5 and it is not clear > >Here is again the relevant analysis(I added * to singular moves of black that is >before move 39 and I am going to look at this position more today because I have >other things to do) > >Thanks to dave Gomboc for doing the job. >I did not look at most of the analysis for 37...Bxh2+ > >36.Bxe5! Bxe5* 37.Nc5! Bxh2+ 38.Kxh2 dxc5* 39.a4 Bc6* 40.Rd6 cxb3 41.Bd3 b2 >42.Re1 b1Q 43.Rxb1 Rxb1 44.Bxb1 is unclear, while after 40.Re6 Kf7 41.Rde1 cxb3 >42.Bd3 Bb5 43.axb5 Rxe6 44.Bc4 Rbb6 45.Bxb3 White should be able to hold the >rook ending. Meanwhile, 40.Re6 Kf7 41.Rde1 Rxd7 42.b4 cxb4 43.cxb4 Rb7 44.Bd1 >Rxb4 45.Bf3 Bxf3 46.Rxa6 Rb2 is wild!, I'll let someone with a faster machine >handle that variation (there may be good deviations for either side along the >way too). If something refutes this line, it's probably this. > >This leaves 36.Bxe5! Bxe5* 37.Nc5! dxc5 38.Rxe5 Rxa2* 39.bxc4 Bxc4 40.Rxc5 which >looks like White should be able to grovel a draw here too. > >39...Bc6 40.Rxc5 Bxg2 may be an improvement for black and I did not check this >line > >Uri I think more of the moves are singular than you are giving credit for. For instance, 38.Kxh2 is an obvious case (though perhaps you were counting that as a normal recapture-extension). My lines were long and narrow (few sidelines) because of the relatively forcing nature of the play. There are a lot of legal moves, but many of them do not seem to be within 0.25 pawns of the best one. Thanks for correcting the Nxe5. Gian-Carlo, you should be ashamed for not understanding what I meant. ;-) Dave
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