1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. b1c3  3... d7d5  4. c4d5  4... f6d5  5. e2e4  5... d5c3  6. b2c3  6... f8g7  7. f1c4  7... c7c5  8. g1e2  8... b8c6  9. c1e3  9... e8g8  10. e1g1 The Grunfeld was to be expected as the  players had an over-the-board discussion at the end of the last year in  Monaco. 10... b7b6 The Grunfeld's most common pawn sacrifice. 11. d4c5 Now forcing play follows. 11... d8c7  12. e2d4  12... c6e5  13. d4b5  13... c7b8  14. c4d5  14... e5g4  15. g2g3  15... a7a6 And Lagno sacrifices the exchange. Also a common  Grunfeld, or rather any fianchettoed opening's idea. 16. d5a8  16... g4e3  17. f2e3  17... a6b5  18. a8d5  18... b8c7 