1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. h2h4 "Just an interesting line for White" (Grischuk).  3... c7c5 "The most principled line" (MVL) 4. d4d5  4... b7b5  5. c4b5  5... a7a6  6. e2e3  6... f8g7  7. b1c3  7... e8g8 