Nepomniachtchi decides to activate his pieces, but the plan goes awry.
1. h1g3 Undoubtedly the most unpleasant move for Black. As I've written before, I usually like to start my games by opening the path for my bishops or queen, and in that sense 1.f4 or 1.c4 is the most natural. In this position, however, it's possible to exploit the weakness of the g7-pawn. 1... g7g6 Black cannot maintain symmetry, as 1...Ng6 loses immediately. The threat of Ng3-h5 must be avoided. Later Carlsen chose 1...f6 here, which seems a little passive to me. 1...f5 is my favorite move. 2. b2b4  2... f7f5  3. c2c4  3... e7e5  4. f2f3 The best way to complete the development. The plan is to play Bf2 and then castle.