Author: Alex Szabo
Date: 20:37:36 07/08/02
Go up one level in this thread
On July 08, 2002 at 13:58:27, Miguel A. Ballicora wrote: >On July 07, 2002 at 15:39:04, Steve Maughan wrote: > >>Mike, >> >>Is WAC 230 correct? If I remember corretly there was a discussion here a few >>months back that said that Rb4 was not such a forced win e.g. >> >>http://www.it.ro/ccc_search/ccc.php?art_id=163138 >> >>Regards, >> >>Steve > >I still think that WAC230 is a win for black. I did not have time to do an >analysis and _prove_ it but my intuition tells me so. >I reproduce the post and answer later. > >Subject : WAC 230 > >---------------------------------------------------------------------------- >Posted by : Bruce Moreland on April 13, 2001 at 04:14:13 > >This is from a post by Alex Szabo. > >#230 [Rb4 does not win. The main line is, 1... Rb4!? 2. cxb4 a4 >3. b5+ Kxb5 4. Ba3 c3 5. Re2! Kc4 6. f4 Kxd4 7. f5 exf5 8. e6 Kd3 >9. e7 Bd7 10. Kf3 d4 11. Rh2 Kc4 12. Rh8 b2 13. Rb8 d3 >14. Bxb2 cxb2 15. Rxb2 a3 16. Rb7 Be8 17. Ra7 Kb3 18. Ke3 a2 >19. Kxd3 Kb2 20. Rb7+ Kc1 21. Ra7 =] > >Ra7, Rb6, Rb5, Rd7, Rf7, Rg7, Rh7, Bd7, Kd7, Kb6, Kb5, a4, and Rc7 >are just as good as the book solution Rb4 -- they all hold the game. > >[D]2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8 b - - 0 1 > >I think this is worth thinking about. After 1. ... Rb4 2. cxb4 a5 3. b5+ Kxb5 >4. Ba3 c3 5. Re2 Kc4 6. f4, we get this: > >[D]2b5/8/4p1p1/3pP1P1/p1kP1P2/Bpp3K1/4R3/8 b - - 0 1 > >6. ... Bd7 is a possibility, but still seems like a draw. > >There is some fascinating stuff going on in the main line. > >WAC attributes this to Nimzovich, but doesn't give a game reference. > >I doubt that the position is solvable by a computer, and if anyone "finds" this, >they've got some lucky eval terms. > >bruce >------------------------------------------------------------------------------- > >The position is from the book "my system", so it is well known from there, not >from WAC. > >IIRC when I looked to this analysis, 6... Bd7 wins. I am "remembering" >blindfold, so beware. For instance, you can answer 7.f5 with Be8. There is no >need to give counterchances to white on the king side. Why doing it? White is >lost in the queen side. One thing is certain, Szabo's move 5. Re2! I is much >stronger than the "classical" PV (that came from the Nimzovich game). > >Regards, >Miguel > > >> ... I don't see a win for Black after 6... Bd7. The best line I can find is: 6... Bd7 7. f5 Be8!? 8. fxe6 Kxd4 9. e7 Kc4 10. Kf4 d4 11. Rh2 d3 12. Rh8 b2 13. Rxe8 b1=Q 14. Rf8 Rc8+ =. Please let me know if Black's play can be improved! Alex.
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