The game ended up falling into a very typical pawn structure, which can occur in several variations and also with inverted colors (in several Sicilian lines, for example, Black is in a position similar to the one that White has here). This structure is known as the \"Hedgehog\" and there is a legendary game always associated with the plan that Carlsen will try later on. This game was played by Fischer in 1970 and shows how the American genius was many years ahead of his time: he was the first to employ the plan that is traditional today.
1. b2b3 Carlsen played this move, usually associated with legendary Danish GM Bent Larsen, in his two White games on day one. A welcome breath of fresh air for those who enjoy more creative openings. 1... e7e5  2. c1b2  2... b8c6  3. e2e3  3... g8f6 Abdusattorov chooses one of the variations with the best reputation for Black. 4. g1f3  4... f8d6 This is a perfectly normal move, but it's not the most popular one. 5. c2c4  5... e8g8  6. d2d3  6... f8e8  7. a2a3  7... a7a5  8. f1e2  8... d6f8  9. e1g1  9... d7d5  10. c4d5  10... f6d5  11. b1d2  11... f7f6 