[Event "Rio de Janeiro"] [Site "Rio de Janeiro"] [Round "0"] [White "Najdorf"] [Black "Panno"] [Result "1-0"] [ECO "B10"] [Opening "Caro-Kann: 2.Nf3"] 1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. d4 Bg4 7. Be2 Qc7 8. h3 Bh5 9. Nh4 Bxe2 10. Qxe2 Nd7 11. O-O e6 12. c4 O-O-O {WHITE TO MOVE:} 13. b4 $1 {When two players have castled on opposite sides of the board the most important thing is to seize the attack as quickly as possible. This old rule is as valid today as it was in the "good old days". In the present case, Black already has an open file for hit Rooks, so it is up to White to obtain an open file for his Rooks as soon as possible. He chooses the best method} 13... Bxb4 (13... -- 14. b5) 14. Rb1 c5 15. Qf3 Qc6 {WHITE TO MOVE:} 16. d5 Qa6 17. a3 Ba5 {WHITE TO MOVE:} 18. Bf4 $1 Bc7 19. Bxc7 Kxc7 20. Rfd1 Rhe8 21. Qf4+ Kc8 (21... Qd6 {WHITE TO MOVE:} 22. Rxb7+) (21... e5 {WHITE TO MOVE:} 22. Qe4 { Weakening of Black's pawns}) 22. Nf3 e5 { An attempt to free himself by giving back his extra pawn} 23. Qe4 f5 24. Qxf5 Qxc4 {WHITE TO MOVE:} 25. Ng5 $1 f6 (25... Rf8 {WHITE TO MOVE:} 26. Nxf7 $1 Kb8 {WHITE TO MOVE:} 27. Qe6 $1 $18) 26. Nf7 Qa6 27. Nxd8 Kxd8 28. Qxh7 b5 29. Qe4 Qb7 30. h4 Rh8 31. g3 a6 32. Qf5 Qb6 33. Qe6 Kc7 34. d6+ Kc8 35. Rdc1 Qc6 36. a4 Kb7 37. Rb2 Kb6 38. axb5 axb5 39. Rcb1 b4 40. Qc4 Kb7 41. Ra1 Qxd6 42. Qe4+ Kb6 43. Rba2 Nb8 44. Qa8 Rd8 45. h5 Qd3 46. Qa5+ Kc6 47. Rc1 Rd5 48. Qa8+ 1-0