1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. g1f3  4... d7d5  5. c4d5  5... e6d5  6. d1a4  6... b8c6  7. c1g5  7... h7h6  8. g5f6  8... d8f6  9. e2e3  9... e8g8  10. f1e2  10... c8e6  11. e1g1  11... a7a6  12. f1c1  12... b4d6  13. a4d1  13... c6e7 This version of the Carlsbad pawn  structure seems far more interesting than the classical one in the QGD for Black. He managed to trade a pair of light pieces, plus White did not yet  start the usual minority attack on the queenside. 14. c3a4  14... b7b6  15. b2b4  15... a6a5 Sealing the queenside for the time being. 16. b4b5  16... g7g5 This is the other difference in comparison to the usual  Carlsbad. Black can use the pawns for the attack too. 17. a4b2  17... e7g6  18. b2d3  18... a8e8 A novelty. Ganguly wants to make the best out of his rooks. 19. f3e1 Yu prevents the h6-h5 advance. 19... h6h5 Or at least it seemed saw! Black is happy to offer a pawn  for an open file. A wonderful move which the computer may never  understand. 20. e2h5  20... g8g7  21. h2h3 That is not the most solid  construction! 21... f8h8  22. h5g4  22... e6g4  23. h3g4 And that is a blunder! 23... e8e3 This is what Yu missed. A key pawn drops and with it  White's position shutters. 24. c1c6  24... d6h2 The position is obviously very close to won for Black, but  there are so many options! 25. g1f1  25... h2g3  26. f1g1  26... g3h2  27. g1f1  27... h2g3  28. f1g1  28... f6d4 Ganguly missed some good  continuations, but nevertheless found a way to keep the attack running. 29. e1c2 The only move. 29... g3h2  30. g1h1  30... h2f4  31. h1g1  31... f4h2  32. g1h1  32... h2f4  33. h1g1  33... d4d3  34. c2e3  34... f4h2  35. g1h1  35... h2e5  36. h1g1  36... e5h2  37. g1h1  37... d3b5  38. a1c1  38... h2g3  39. h1g1  39... g3h2  40. g1h1  40... g6e7 Finding the correct idea. The rooks cannot  hide from the discovered checks. 41. g2g3  41... e7c6  42. e3f5  42... g7f8  43. h1g2  43... h2g3  44. f5g3  44... h8h6  45. g3f5 Black is three pawns up, but not yet there. The  super-knight on f5 demands precise play. 45... h6e6  46. d1f3  46... b5b2  47. c1h1  47... c6e7 Without the knights Black has very few  problems left. 48. f3g3  48... e7f5  49. g4f5  49... e6e2  50. g3f3  50... b2e5  51. f5f6  51... f8e8 The king is finally safe. 52. h1h8 