1. e2e4  1... g8f6  2. e4e5  2... f6d5  3. d2d4  3... d7d6  4. g1f3  4... d6e5 One of the most solid options for Black in the Alekhine Defense. Both the alternatives, 4...Bg4 and 4...g6, were played in the iconic Spassky-Fischer match. 5. f3e5  5... c7c6 Bortnyk is an expert on this system, having played it dozens of times in online games. By the way, Carlsen has also played this a few times. 6. f1d3  6... b8d7  7. e1g1  7... d7e5  8. d4e5 Both players had already faced each other in this position but in a bullet game. Bortnyk chose 8...g6, but this time he plays a move that Carlsen knows well, since he played it in his teenage years. 8... d5b4  9. d3e4  9... d8d1  10. f1d1  10... g7g6  11. b1a3 A new move. 11... f8g7  12. c2c3  12... b4a6  13. a3c4 On the board we have a typical position in which the world champion feels good. Objectively, White doesn't have much, but with his magnificent endgame technique, he manages to exert pressure. 13... e8g8  14. c1e3  14... a6c7  15. a2a4  15... c7d5  16. e3d4  16... b7b6 [%c_effect b6;square;b6;type;Inaccuracy;persistent;true] This is an error that will be exploited immediately. Black keeps the disadvantage to a minimum after 17. a4a5 [%c_effect a5;square;a5;type;GreatFind;persistent;true] The bishop on d4 turns into a monster now. He will be the main piece responsible for White's victory. 17... b6b5  18. c4e3  18... c8e6  19. a5a6 [%c_effect a6;square;a6;type;GreatFind;persistent;true] An excellent move, fixing the a7-pawn as a target. 19... f8c8  20. e3d5  20... e6d5 The best. After 21. e4d5  21... c6d5 