1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3 Robson has been faithful to the most classical of the Nimzo-Indian variations throughout the tournament, showing that it's possible to gain attacking positions with the queen's pawn as well. 4... e8g8  5. f1d3  5... d7d5  6. a2a3  6... d5c4 So decides to keep his bishop. 7. d3c4  7... b4e7  8. g1f3  8... c7c5  9. e1g1  9... a7a6  10. d4c5  10... e7c5  11. d1e2  11... b7b5  12. c4a2  12... c8b7  13. e3e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] White's typical plan in this pawn structure. The diagonal opens for the bishop and there's the possibility of playing e4-e5 and trying to attack on the kingside. 13... d8c7 [%c_effect c7;square;c7;type;GreatFind;persistent;true] An accurate defensive move. 14. e4e5  14... f6d7  15. c1f4  15... b7f3 [%c_effect f3;square;f3;type;GreatFind;persistent;true] The knight needs to be captured so that Black can attack the e5-pawn. So was played all this very quickly, he was probably still on preparation. 16. e2f3  16... b8c6  17. c3e4  17... d7e5  18. f3h5 The first new move of the game. 18... c5d4  19. a1d1  19... f8d8 [%c_effect d8;square;d8;type;Mistake;persistent;true] The price of a mistake is very high in this position and now Black is hopelessly lost. 20. d1d3 [%c_effect d3;square;d3;type;GreatFind;persistent;true] The rook lift through the third rank is fatal. 20... c7e7  21. d3h3 