[Event "Saltsjobaden"] [Site "?"] [Round "0"] [White "Najdorf"] [Black "Ragozin"] [Result "0-1"] [ECO "D90"] [Opening "Gruenfeld: Three Knights Variation"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Bg4 8. Ng5 Nc6 9. d5 Ne8 10. h3 (10. dxc6 Bxc3+ 11. Qxc3 Qd1#) 10... Ne5 11. Qb3 Bc8 12. Be2 c6 13. O-O cxd5 14. Nxd5 Nc6 15. Nf3 Nd6 16. Rd1 Be6 17. Qa3 Nxe4 18. Nf6+ Nxf6 19. Rxd8 Rfxd8 {Rook, Knight and pawn generally mean full compensation for the Queen. In the present case there is a little positional advantage as well, consisting of a lead in development sufficient at least to ensure the advance of Black's centre pawn. The extra freeedom of movement which must result from this gives Black the better chances} 20. Bd2 $2 { This enables Black to improve the placement of his Knight with gain of tempo.} (20. Bg5) (20. Be3) 20... Ne4 21. Be3 Nd6 22. Rc1 (22. Re1 Nf5 (22... Nc4 23. Bxc4 Bxc4 24. b3 Bd5 {Two bishops would being to pull their weight}) 23. Bc1) 22... Nf5 23. Bf4 {This allows Black to advance his centre pawn with gain of tempo. White however has not enough points of contact for forming a sound plan since he exerts so little influence in the centre} (23. Bc4 {Pirc} 23... Bxc4 24. Rxc4 e5) (23. Bc5 b6 24. Be3 Bd5) (23. Ng5 Nxe3 (23... Bd5 24. Bf3 Nxe3 25. Qxe3 Bxb2 26. Rb1 Bd4 27. Qf4 $132) 24. Nxe6 Rd6 25. Nxg7 Nd5 26. Nh5 gxh5 { White reagins his pawn, attaining a material advantage}) 23... Bd5 24. Bc4 Bxc4 25. Rxc4 e5 26. Bg5 (26. Bd2 {rather than drive the Rook to a better square}) 26... Rd1+ 27. Kh2 h6 28. Rc1 Rd7 29. Be3 e4 {opens the diagonal for the Bishop, and sets up a splendid strongpoint at d3 for the other pieces} 30. Ne1 Rad8 31. Bc5 (31. Bf4 g5 32. Be3 Be5+ 33. g3 Nxe3 34. Qxe3 f5) 31... Be5+ 32. g3 (32. Kg1 Rd2 33. Rb1 (33. Rc2 Rxc2 34. Nxc2 Rd1+ 35. Ne1 Rxe1#) 33... Re2) 32... Rd2 {Wins a pawn} 33. Rc2 Bxg3+ 34. Kg2 {a cunning trap} 34... Be5 (34... Bxf2 35. Bxf2 e3 36. Qc3 exf2 37. Rxd2 fxe1=Q 38. Rxd8+) 35. Kf1 Rxc2 { This is an inexactitude. It was not necessary to relieve White of his poorly placed Rook by exchange.} (35... Rd1) 36. Nxc2 Rd1+ 37. Ke2 (37. Kg2 Nh4#) 37... Rb1 38. b4 Rb2 39. Kd1 Rb1+ 40. Kd2 Bf6 {initiating the decisive attack} 41. Bxa7 Ne5 42. Qa4 Nf3+ 43. Ke2 Ng1+ 44. Kd2 Nf3+ 45. Ke2 Nd6 46. Qd7 (46. -- b5 47. Qa5 Nc4) 46... Ng1+ 47. Ke3 Rd1 48. Nd4 Rd3+ 49. Kf4 Ne2+ 50. Kg4 (50. Nxe2 Rf3+ 51. Kg4 h5#) 50... h5# 0-1