1. g1f3  1... d7d5  2. e2e3  2... g8f6  3. c2c4  3... c7c6  4. b1c3  4... a7a6 This system in which Black plays the pawns to c6 and a6 is called the Chebanenko. It was one of the favorite defenses of GM Morozevich, one of the most original chess players in history. Black breaks the normal rules of the opening and prepares to advance the pawn to b5 before completing development. 5. d2d4  5... b7b5  6. b2b3 This move is the most popular, protecting the pawn on c4. The c4-c5 advance, gaining space, is also critical. 6... c8g4  7. a2a4 [%c_effect a4;square;a4;type;Interesting;persistent;true] Now Black needs to decide whether to capture the pawn on c4, opening the b-file, or close in the queen with b5-b4. There is no consensus on this and both moves have already been played in grandmaster practice. 7... b5c4 The machine's first choice. 8. b3c4  8... b8d7  9. f1e2 Preventing e7-e5. 9... e7e6  10. c4c5 This move closes the queenside and prevents Black's bishop from being developed to d6. 10... a6a5 [%c_effect a5;square;a5;type;GreatFind;persistent;true] An important move, preventing a4-a5, which leaves Black with a weakness on a6. 11. e1g1  11... f8e7  12. f3e1 A theoretical novelty and not the most threatening move. Black doesn't have many problems after the bishop exchange. 12... g4e2  13. d1e2  13... e6e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] This typical break allows Black to achieve a good position. 14. e1d3  14... e5d4  15. e3d4  15... e8g8  16. f2f3 It's not clear whether this move is necessary at this point. 16... f8e8  17. e2c2  17... d7f8 A typical plan: the knight is going to e6, where it attacks the weak d4-pawn. 18. c3e2  18... f6d7 Black seems to have a comfortable position, having already exchanged the light-squared bishop, something that is positionally desirable. The plan is to play Ne6 and Bf6, putting pressure on the d4-pawn. His only potential problem is that the a5-pawn could be an attacking target in the endgame. 19. f3f4 [%c_effect f4;square;f4;type;Interesting;persistent;true] An aggressive plan to create attacking chances on the kingside. 19... f8e6  20. c1b2  20... d8c8 A useful move, protecting the c6-pawn and improving the queen's position. 21. e2g3  21... a8b8  22. a1e1 [%c_effect e1;square;e1;type;Inaccuracy;persistent;true] This is a mistake and Abdusattorov shows why. 22... e7h4 [%c_effect h4;square;h4;type;GreatFind;persistent;true] This is it. An excellent move that prepares to exchange the bishop for the knight, making the e4-square weaker. 23. f4f5  23... e6g5  24. e1e8  24... c8e8  25. b2c1  25... g5e4  26. c1f4  26... b8b7  27. g3h5 [%c_effect h5;square;h5;type;Inaccuracy;persistent;true] It's not clear what this move accomplishes. 27... g7g6  28. h5g3  28... e4g3 A difficult move, as after all the knight was very well-placed. The idea is to free the e4-square for the queen. Black can keeps a stable advantage after both 28...Bf6 or 28...Bxg3. 29. h2g3  29... h4f6  30. c2c3  30... e8e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] The game becomes tactical and variations must be calculated. 31. f4e5 [%c_effect e5;square;e5;type;Inaccuracy;persistent;true] 31... e4e3  32. g1h2  32... f6e5 [%c_effect e5;square;e5;type;Mistake;persistent;true] This allows White to fight back. 33. d4e5 