Author: Vasik Rajlich
Date: 09:54:48 12/28/05
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On December 28, 2005 at 03:52:47, Sandro Necchi wrote: >On December 28, 2005 at 03:12:23, Vasik Rajlich wrote: > >>Interesting game. I didn't like .. h6 and .. g5 by Rybka in the opening (as I >>suspect most human players won't), and there were a few moments in the endgame >>where better resistance could have been put up - but these are relatively minor >>points. >> >>The biggest issue was the incorrect sacrifice of the h6 pawn. The Rybka static >>eval incorrectly gives the following position (and others of a similar type) as >>roughly equal: >> >>[D] 8/1b2b1k1/pp1ppp2/nPq5/P1P1P3/2QRNPP1/8/1N2KB1r b - - 0 27 >> >>I'll keep to myself my proposed solution. It's a tricky issue and won't be >>handled until after the Rybka 1.2 release. If anybody wants to share here, I am >>all ears :-) >> >>Vas > >Hi Vas, > >here a quick game analyse with comments. > >Ciao >Sandro > >1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5?! {it is not as >good as most people think} 5. dxc5! O-O 6. a3 Bxc5 7. Nf3 >Nc6?! {I believe this move to be weak} 8. Bg5 b6?! {the >problem of this variation is the pawn left in d7 which will make >it hard to play for most programs} 9. Rd1!? Bb7 10. e4 >h6? {better Be7} 11. Bh4 g5?! {weakening the king } >12. Bg3 Nh5?! {black should counter attack in the center >and not look for exchanging the knight versus the bishop} >13. b4! {Shredder gives here a good advantage to white as >black will get more compressed} Be7 14. b5?! {it should be >stronger Qd2 to prepare to attack the king side} Na5 >15. Ne5 d6 16. Ng4 Qc7?! {Rc8 should be stronger} >17. Nxh6+ Kg7 18. Ng4 Nxg3 19. hxg3 Rh8 20. Rxh8 Rxh8 >21. Nb1 Qc5 22. Qc3+ f6 23. f3 Rh1 24. Ne3! a6 25. a4 g4 >26. Rd3! gxf3 27. gxf3 Qg5 28. g4 Kg6 $2 29. Nd2 Qe5 >30. Qd4 Qxd4? {changing the most active piece gives white >advantage} 31. Rxd4 Rh8 32. f4! {Shredder gives white >half a piece ahead while Rybka evaluate the position about >even...I think Shredder is correct} Sandro, I agree with this. Not sure about .. Qxd4, I think it´s already difficult .. Vas
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