Ju is preparing to play the most common plan in this structure, the minority attack.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... b8d7  5. c4d5  5... e6d5  6. c1g5  6... c7c6 A classic Carlsbad structure is reached. 7. e2e3  7... f8e7  8. f1d3  8... h7h6  9. g5h4  9... e8g8  10. e1g1  10... f6e4 And a classic freeing maneuver in this line. 11. h4e7  11... d8e7  12. d1c2  12... f8e8 