1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... d5c4 "Maybe I should study some  Catalans with ...dxc4." (Grischuk) 5. f1g2  5... a7a6  6. e1g1  6... b8c6  7. e2e3  7... a8b8  8. f3d2  8... e6e5  9. g2c6  9... b7c6  10. d4e5 