Time for Erigaisi's pawns to steamroll.
1. c2c4  1... c7c6  2. g1f3  2... d7d5  3. e2e3  3... g8f6  4. b1c3  4... a7a6 The Chebanenko Slav, named after a prominent Moldovan coach, is one of the most important opening discoveries of the second half of the twentieth century. 5. d2d4  5... c8f5  6. d1b3  6... b7b5  7. c4c5  7... a6a5  8. f3h4  8... f5c8 The bishop is far from shy about moving back to the initial position in many lines of the Slav. 9. f2f4 All of this has been seen in a game from the 2018 Batumi Olympiad, which both opponents should definitely have known. After a long think, Makarian set up the board for a new game... 9... f6g8 [%c_effect g8;square;g8;type;Interesting;persistent;true] Jokes aside, there is a serious threat behind this retreat. Besides, the move prepares the optimal development of the black pieces. 10. h4f3 Erigaisi also spent a good amount of time on the clock before retreating himself. 10... a5a4 Apparently also a necessary pawn move. 11. b3c2  11... g7g6 Quite a picturesque position $1 Black has played \"beginner's chess,\" using only his pawns instead of developing the pieces. Still, since his pieces are about to occupy their optimal squares, and since, of course, the position is locked, he can afford to play like that $1 12. f3e5 White prefers to preserve his light-squared bishop from a possible trade. 12... f8g7 Black also keeps his light-squared bishop on its initial square for the time being. 13. c1d2  13... g8h6  14. f1e2 White has to lose a tempo for starters. 14... e8g8  15. e1g1  15... c8f5  16. c2d1  16... f7f6 Played without much hesitation. 17. e5c6 [%c_effect c6;square;c6;type;GreatFind;persistent;true] This sacrifice was always in the air, but in this particular case it seemed more or less forced. 17... b8c6  18. e2b5  18... f5g4 This only helps White. 19. d1c1  19... c6a7  20. b5a4 Did I actually say sacrifice $2 Erigaisi has three pawns for the piece, and with the help of some tempi will quickly be able to rush them up to the queening squares. 20... g8h8 [%c_effect h8;square;h8;type;GreatFind;persistent;true] Necessary prophylaxis. 21. a4b3 With his next maneuvers, White tries to deprive his opponent of any active counterplay in the center. 21... e7e6  22. c3a4  22... a7c8  23. b3d1 Or else the black bishop might switch to the a6-f1 diagonal. 23... g4d1  24. c1d1  24... d8d7 Obvious, but since White has lost a few tempi, it feels as though Black should have something more. 25. b2b3 A do or die moment for Black. 25... d7c6 And he maneuvers...This is too slow $1 26. d2c3 Now e6-e5 no longer seems to be a good idea. 26... a8a7 Makarian sends all the reserves to the kingside, but who will stop the passers on the other side of the board $2 27. d1d2  27... a7f7  28. a4b2  28... e6e5 