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 