Ivic tries to fix the enemy pawns  on the color of his own bishop, but this plan has a concrete flaw.
1. g1f3  1... g8f6  2. b2b3  2... g7g6  3. c1b2  3... f8g7  4. g2g3  4... e8g8  5. f1g2  5... d7d6  6. d2d4 The doubled  fianchetto is an anti-KID line, which both Andreikin and Artemiev love and play with pleasure. 6... a7a5 One of the ways to fight for equality, in  the spirit of the Grunfeld defense. 7. c2c4  7... a5a4 Consistent. 8. b1d2  8... a4a3 This is a novelty that looks just fine. 9. b2c3  9... c7c5  10. e1g1  10... b8c6  11. e2e3  11... c8f5  12. d1e2  12... f6e4  13. d2e4  13... f5e4 Now that a pair of knights has been swapped,  Black has enough room for his pieces to maneuver. The central pressure is  also favorable for him. All in all, Ivic has equalized with ease. 14. f1d1  14... e7e6  15. a1c1 We can now appreciate the young Serbian's novelty. With  the a-file locked, Andreikin finds it hard to form an active plan. There  is no b2-square for his queen, no doubling along the a-file, and the pawn  on a2 is a potential weakness. 15... d8e7  16. f3e1 Finally Andreikin agrees to swap another pair of  pieces. 16... e4g2  17. e1g2  17... c5d4  18. e3d4 