Complex sentence: Part of his strength is his ability to read far into the game very fast, and to make seemingly stupid moves, which, in fact, lure the opponent to playing what looks like the obviously correct move, which Hikaru then uses against them.
Split into simpler sentences: Part of his strength is his ability to read far into the game very fast, and to make seemingly stupid moves. These moves in fact lure the opponent to playing what looks like the obviously correct move, which Hikaru then uses against them.