1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8c5  5. e1g1  5... d7d6  6. c2c3  6... a7a5  7. c4b3  7... e8g8  8. f1e1  8... c5a7  9. h2h3 The move orders in the Italian Opening are very subtle. The important point here is to note that White doesn't develop the knight on d2 too early: the idea is to be ready to play d4 quickly. 9... c8e6  10. b3c2  10... h7h6  11. d3d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] This has the advantage of not developing the knight on d2 so soon. White is ready to play d4 as the pawn is protected. 11... e5d4  12. f3d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] As usual in the match, Lei displays excellent opening preparation. This is an important moment in the game. 12... e6d7 [%c_effect d7;square;d7;type;Inaccuracy;persistent;true] This is not in the spirit of the position. A more dynamic move is required. 13. c1e3 White is ready to develop the knight on d2 with a better position. 13... c6e5 A new move, preparing to attack the strong knight on d4. 14. b1d2  14... c7c5  15. d4f3  15... d7c6  16. f3e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] 16... d6e5  17. a2a4 [%c_effect a4;square;a4;type;GreatFind;persistent;true] White has a clear positional advantage now due to the better pawn structure. 17... d8e7  18. d1e2  18... f8d8  19. e1d1  19... a7b8  20. e2c4 [%c_effect c4;square;c4;type;Interesting;persistent;true] An unconventional move. The queen, not the knight, goes to c4. 20... b7b6  21. b2b4 [%c_effect b4;square;b4;type;GreatFind;persistent;true] 21... a5b4 [%c_effect b4;square;b4;type;Inaccuracy;persistent;true] It's better to keep the queenside closed. 22. c3b4  22... b8d6  23. b4b5  23... c6d7  24. c4c3 [%c_effect c3;square;c3;type;GreatFind;persistent;true] Freeing the c4-square for the knight. 24... d7e6  25. d2c4  25... e6c4  26. c3c4 White has a dream positional advantage, but it's not easy to break the resistance in a world championship match. 26... f6e8 [%c_effect e8;square;e8;type;GreatFind;persistent;true] Heading the knight to the d4-square. 27. c2b3  27... e8c7  28. c4c2  28... c7e6  29. b3d5  29... a8b8  30. d5e6 [%c_effect e6;square;e6;type;Inaccuracy;persistent;true] A difficult decision. This move is not the computer's favorite, but for human eyes, it looks very sensible to eliminate this knight. 30... e7e6  31. d1d5  31... d6e7  32. a1d1  32... d8d5  33. d1d5  33... b8a8 [%c_effect a8;square;a8;type;Inaccuracy;persistent;true] 34. e3d2 [%c_effect d2;square;d2;type;GreatFind;persistent;true] 34... g8f8  35. d2c3  35... f7f6  36. c2b3 Now Black has no counterplay at all: no c4-advance and no Be7-g5 to exchange bishops, the two main ideas we saw in the analysis of 30...Rc8. 36... e6c8  37. b3c4 