1. d2d4  1... d7d5  2. g1f3  2... c7c5  3. c2c4  3... c5d4 An interesting position and not well-known at amateur level. It's not easy to demonstrate an advantage for White in this opening. 4. c4d5  4... g8f6  5. f3d4  5... f6d5  6. e2e4  6... d5f6  7. f1b5  7... c8d7  8. b1c3  8... e7e5 The most accurate. 9. b5d7  9... d8d7  10. d4f5  10... d7d1  11. e1d1 