1. e2e4  1... e7e6  2. d2d3 The King's Indian Attack, famous for Bobby Fischer's brilliant victories, is a great weapon for blitz games thanks to its schematic play and the chances of attacking the king. 2... c7c5  3. b1d2  3... b8c6  4. g1f3  4... d7d5  5. g2g3  5... g8f6  6. f1g2  6... f8e7  7. e1g1  7... e8g8  8. f1e1  8... b7b5 The main position of the King's Indian Attack in its most classical version. 9. e4e5 This move used to be played more or less automatically until Svidler won an excellent game in the 2015 World Cup with an alternative plan: capturing on d5. 9... f6d7  10. d2f1  10... a7a5 The game becomes a race: Black will advance the pawns on the queenside and White will advance the h-pawn and try to accumulate pieces on the kingside. The plans for both sides are clear, but to win you need to use the most important and difficult theme in chess: prophylaxis. You need to carry out your plan but try to prevent or slow down your opponent's plan. 11. h2h4  11... a5a4  12. h4h5  12... h7h6 [%c_effect h6;square;h6;type;GreatFind;persistent;true] It's important in these positions not to allow the white pawn to advance to h6, which creates weaknesses on the squares close to the black king. This is a difficult concept and one that took me a while to learn, as the position is closed and apparently safe, but with this structure White can play c2-c4 at some point and the weaknesses on the kingside will be an issue sooner or later. After h7-h6 Black has to be careful with a thematic bishop sacrifice on h6. 13. f1h2 The knight prepares to go to g4, where it will support a possible sacrifice on h6. 13... b5b4 Black follows his plans without fear. 14. a2a3 Why does White waste time advancing on the queenside $2 At the moment the plan of Ng4, followed by the sacrifice on h6, does not bring much benefit, so White advances the pawn to a3 before Black can play a4-a3 or b4-b3. 14... b4a3  15. a1a3 [%c_effect a3;square;a3;type;Inaccuracy;persistent;true] I don't like this move, as it allows Black to advance on the queenside with tempo. 15... c5c4 [%c_effect c4;square;c4;type;GreatFind;persistent;true] 16. d3d4 [%c_effect d4;square;d4;type;Mistake;persistent;true] An optimistic sacrifice. 16... e7a3  17. b2a3 White doesn't even have a pawn for the exchange: all that remains is the hope of a kingside attack, taking advantage of the absence of the dark-squared bishop in the defense. In a blitz game there's always a chance, but Black's material advantage should be enough for victory. 17... f7f5 [%c_effect f5;square;f5;type;GreatFind;persistent;true] Gaining space and bringing pieces to the defense. 18. e5f6  18... d7f6  19. f3e5  19... c6e5  20. e1e5  20... f6e4  21. h2g4  21... a8b8  22. c1f4  22... e4c3 [%c_effect c3;square;c3;type;Mistake;persistent;true] This looks good at first glance, supporting Rb1, but there's a tactical flaw. 23. d1d2 [%c_effect d2;square;d2;type;Mistake;persistent;true] 23... b8b1  24. g1h2  24... c3e4  25. d2e3  25... f8f5 [%c_effect f5;square;f5;type;GreatFind;persistent;true] 26. f4h6  26... d8e8 [%c_effect e8;square;e8;type;GreatFind;persistent;true] The h5-pawn is captured and the game is decided. 27. g2h3  27... e8h5  28. f2f3  28... b1h1 [%c_effect h1;square;h1;type;GreatFind;persistent;true] 29. h2h1  29... h5h3  30. g4h2  30... g7h6  31. e5f5  31... e4g3  32. h1g1  32... g3f5 Black is a piece up in the endgame. There's no need for further comments. 33. e3d2  33... h3h4  34. d2b4  34... h4d4  35. g1g2  35... d4g7  36. g2f2  36... c8d7  37. b4b8  37... g8h7  38. h2g4 