1. c2c4  1... e7e6  2. g2g3  2... d7d5  3. f1g2  3... g8f6  4. g1f3  4... f8e7  5. e1g1  5... e8g8  6. d2d4  6... c7c6  7. b1c3  7... a7a5 A curious move that is quite popular these days. The pawn advance can be useful in case of a plan with ...b6-Ba6. 8. f3e5  8... b8d7  9. c1f4  9... f6h5 A typical idea: the knight attacks the bishop and then goes back. 10. f4e3  10... h5f6  11. h2h3 Of course White is in no mood to repeat moves. 11... d7e5 [%c_effect e5;square;e5;type;Inaccuracy;persistent;true] The wrong plan of action. 12. d4e5  12... f6d7  13. f2f4  13... b7b6  14. c4d5  14... c6d5  15. e3d4  15... c8a6  16. f1f2 Preparing e2-e4. 16... d7c5  17. f4f5 [%c_effect f5;square;f5;type;Interesting;persistent;true] An interesting move, changing the pawn structure. 17... e6f5  18. f2f5  18... a6c8  19. f5f2  19... c8b7 [%c_effect b7;square;b7;type;Inaccuracy;persistent;true]