Carlsen wants to bring the knight to g6 or c6.
1. e2e4 Because I normally like to start Chess960 games with harmonic moves that open the way for a bishop or queen, my favorites in this position are 1.e4 (played in two games) and 1.b4 (which was not played, but which can transpose later if White plays e4). Two games in this round started with 1.c4. 1... e7e5 An important point for Chess960 opening theoreticians (I don't know how many there are, if any) is knowing under what circumstances repeating the same moves as your opponent is a good strategy. 2. b2b4 A harmonious move, as it opens the way for the bishop and the rook supports the pawn. 2... b7b5  3. g1h3 [%c_effect h3;square;h3;type;GreatFind;persistent;true] As we have seen in previous analyses, this is the best home for the knight.