1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... d5c4  5. f1g2  5... c7c5  6. e1g1  6... b8c6  7. d4c5  7... d8d1  8. f1d1  8... f8c5  9. b1d2  9... c4c3 A common desperado idea: before leaving the board the pawn wants to make some damage to the opponent's pawn structure. 10. b2c3  10... e8g8  11. d2b3  11... c5e7  12. c3c4 In return White seizes space with this  potential weakness. 12... c8d7  13. c1b2  13... f8d8  14. f3d4  14... a8c8  15. d4b5 