[%c_effect c5;square;c5;type;GreatFind;persistent;true]
1. c2c4  1... g8f6  2. b1c3  2... c7c5  3. g1f3  3... e7e6  4. e2e3  4... d7d5  5. d2d4  5... a7a6 This is a popular move to keep the central tension and avoid a possible development of White's bishop on b5. 6. c4d5  6... e6d5  7. f1d3 This is only the fourth-most-played move. The bishop normally goes to e2 or even g2 after 7.g3. Capturing on c5 is also a popular choice. 7... b8c6  8. e1g1 Why is bishop development on d3 not so popular $2 Mainly for two reasons: Black can now play c5-c4 and attack the bishop, or else play the Bg4 with an unpleasant pin. 8... c8g4  9. d3e2 Modern times. White plays Bd3 and returns with the bishop to e2 soon. What's the logic of that $2 Caruana's idea will soon become clear. 9... a8c8  10. f3e5 A new move, again trying to exploit the bishop on g4. 10... g4e6  11. e2f3  11... d8c7  12. e5c6  12... b7c6  13. c3e2  13... f8d6  14. h2h3  14... c5d4  15. e3d4  15... e8g8  16. d1d3  16... c7b7 The computer is not worried about the a6-pawn and suggests sacrificing it. 17. c1f4 [%c_effect f4;square;f4;type;GreatFind;persistent;true] 17... d6e7  18. b2b3  18... b7b5  19. d3e3  19... f8e8  20. e2c3  20... b5a5  21. c3a4 A useful square for the knight, avoiding the c7-c5 break. They say, \"A knight on the rim is dim,\" but every rule has an exception. 21... e6f5  22. e3c1  22... f6d7  23. f1e1  23... e7f6  24. e1e8  24... c8e8  25. f4e3 Caruana keeps trying to control the c5-break, but it comes anyway.