1. c2c4 Behind in the result and with just one last white game So needs to  play for a win at any cost. 1... g8f6  2. b1c3  2... e7e5  3. g1f3  3... b8c6  4. e2e3  4... f8b4  5. d1c2  5... e8g8  6. c3d5  6... f8e8  7. c2f5 A positionally aggressive line introduced in  the tournament practice by R. Keene and later adopted by V. Kortschnoi.  White wants to use weakening of the f7-square and double the opponent's  pawns on the kingside. 7... d7d6  8. d5f6  8... d8f6  9. f5f6  9... g7f6  10. a2a3  10... b4c5  11. b2b4  11... c5b6  12. c1b2  12... a7a6  13. e1c1 [#] 13... c8f5 A novelty by Radjabov. Black's position  is very risky strategically. White aims to either advance his center pawns and block the enemy dark-squared bishop and/or to expand on the kingside  with tempos. Black on his turn is waiting for the opening of the game to  underline the fact that the white king is not perfectly safe. 14. h1g1  14... c6e7  15. d2d4 Once more the most flexible continuation. 15... f5e4 In order to de-centralize the knight. 16. f3d2  16... e4g6  17. d2f3 So wants his knight back in the center but misses an  excellent chance. 17... a6a5 Getting air for his pieces. 18. b4b5  18... c7c6 Consistently clearing the road for his pieces. 19. a3a4  19... c6b5  20. a4b5  20... a5a4  21. b2a3  21... e5d4  22. e3d4 It seems as everything is under control  and that White's strategy will slowly prevail. However, the previous  unbalacing of the queenside situation prepeared the next storm: 22... e7d5 Take it, or not, the gin is out of the bottle. 23. c1b2 So is  cool. 23... b6a5 Who needs the knight when one can have the diagonals and  the files? 24. a3d6 Still trying to keep everything under control. 24... d5c3 The knight survived and creates havoc in the White's camp. 25. d1c1  25... c3e4  26. d6g3  26... a4a3 The dynamics worked well for Radjabov and now So  needs to be careful. 27. b2a2  27... e4c3 Forcing White to expose his king. 28. a2a3  28... a5b4  29. a3b4  29... c3a2 Now So instinctively avoided the repetition  with: 30. b4c5 And got checkmated after: 30... e8e6 