1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... f8c5  4. e1g1  4... d7d6  5. c2c3  5... g8f6  6. d2d3  6... a7a6  7. c4b3  7... e8g8  8. f1e1  8... c5a7  9. b1d2  9... f6g4 [%c_effect g4;square;g4;type;Interesting;persistent;true] The game becomes sharp after this knight thrust. 10. e1e2  10... g8h8  11. h2h3  11... g4h6  12. d2f1  12... f7f5  13. c1g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] The most accurate. Carlsen certainly knows all the details of this position. I saw with my own eyes him playing this as Black in Brazil. This happened in 2014, an unforgettable year for us Brazilians, due to this visit of the then world champion and for a sporting event that I prefer not to remember. The memory feats of world champions like Fischer, Kasparov, and Carlsen are well documented—they are said to be able to remember almost every game they've played. Whether it's true or not, I don't know, but based on the quality of the next moves, I believe he remembered this opening well. 13... d8e8  14. g5h6 