Which side of the board should you play on? You have to read the tea leaves, or in this case, the pawn structure. GM Khachiyan shows a surprising middlegame king walk that allows Black the full power of his rooks in the attack. Black does well to blockade the side of the board he is worse on, and from there it's all over but the crying, or rather the resigning. Know where you are stronger, and you'll attack with the best also!