[Event "Southern California Cross Class Championship, XA section"]
[Site "Irvine, CA"]
[Date "2013.11.10"]
[Round "5"]
[White "Archit Dasika"]
[Black "Michael Cooper"]
[Result "0-1"]
[WhiteElo "1853"]
[BlackElo "2081"]
[Opening "Sicilian: Najdorf"]
[ECO "B90"]
[NIC "SI.14"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 h5 9. Qd2 Nbd7 10. O-O-O Rc8 11. g3 b5 12. Qf2 {White is trying to achieve f3-f4. Given that this is his goal, he should go ahead, as 12. f4 b4? 13. Nd5! Nxe4? 14. Qxb4 gives White excellent play. After Black's thematic Exchange sacrifice in response to the game continuation, I believe White is already clearly worse.} Rxc3 13. bxc3 Qc7 14. Kb2 Be7 15. h3 O-O 16. Bd3 Rc8 17. Qe1 {Black has patiently built up as White can do very little. Now the central pawn break, 17... d5! has been adequately prepared. White cannot then profitably achieve the dreamed-of g3-g4, as the f3-pawn cannot support both g4 and e4.} Nc5 {I think this was my only mistake in the game.} 18. Nxc5 dxc5 19. g4 {19. c4!, offering to sacrifice a pawn back, was absolutely necessary to save White's position. Now Black's pieces simply pour into the queenside.} c4 20. Bf1 {Leaving e2 clear, to allow White's king's rook to defend along the second rank.} Qa5 21. Ka1 b4 22. Rb1 b3 23. cxb3 cxb3 24. Rh2 Rxc3 {At first, I did not want to play this move, as it would leave my queen in a pin. But then I remembered something about setting up a discovered attack, an idea from teaching lessons for IM Kongliang Deng, and I saw that after Black's next two moves, White would be in terrible trouble.} 25. Rbb2 {One entertaining line I calculated was 25. Rhb2 Bb4 26. Bd2 Rc2! 27. Bxb4 Qxa2+!! 28. Rxa2 Rxa2#.} Ba3 26. Rb1 {White absolutely must do anything but retreat the rook.} Bb4 {Now it is all over. The threat of the discovery is too strong, and the queen is tied to the defense of e3.} 27. Rbb2 Rc2 28. Qb1 Bc3 29. Bd2 {29. Bc1 Rxc1! 30. Qxc1 Qxa2 is mate, as is 29. Rxc2 bxc2 30. Qxc2 Qxa2.} Rxb2 {Even better is 29... Qxa2+! 30. Qxa2 bxa2 and White has no good defense to the threat of ...Bxb2#, e.g. 31. Bxc3 Rc1+ 32. Rb1 Rxb1#, but White resigned anyway.} 0-1
