Firouzja, on his turn, regroups his pieces on the kingside.
1. c2c4  1... g8f6  2. g1f3  2... g7g6  3. b1c3  3... f8g7  4. e2e4  4... d7d6  5. d2d4  5... e8g8  6. f1e2  6... e7e5  7. d4d5 The  Petrosian system which was successfully revived by Vladimir Kramnik. 7... a7a5  8. c1g5  8... h7h6  9. g5h4  9... b8a6  10. f3d2  10... c8d7  11. a2a3  11... d8e8  12. g2g4 One of the key points behind this positional system.  Anton wants to lock the kingside. 12... a5a4  13. f2f3  13... h6h5  14. h1g1  14... h5g4 A novelty. 15. f3g4 