I was watching the current Carlsen vs Adhiban game and I saw a move that always puzzles me:
5. h3 Bh5
I'd say Carlsen want to unpin the knight, or kick the bishop away. The bishop retreats, while keeping pressure on the same diagonal
This move I don't get. I can imagine that
6.g4 would cause positional trouble on the kingside, so the bishop is moved to e2 in order to break the pin.
But if this is true, then why did Carlsen play
5.h3 in the first place ?
I don't get what does