1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. g1f3  3... g8f6  4. b1c3  4... e7e6  5. c1g5  5... b8d7  6. c4d5 This is an old method of sidestepping the Cambridge Springs Variation. 6... e6d5 The game has transposed into the Exchange Variation with one little twist: the white knight is already on f3. 7. e2e3  7... f8e7  8. f1d3 Ding has his own taste. 8... f6e4  9. g5f4  9... d7f6  10. e1g1  10... e8g8  11. f3e5  11... c8f5  12. d1c2  12... g7g6 