Box three rounds of one minute. Knock your rival down and keep them down for the referee's count of 10 for a KO; three knockdowns in one round is a TKO. Still standing after round 3? Three judges score every round.

A jab is quick and cheap, a hook hits harder, and an uppercut hurts most but leaves you wide open if it misses. Every punch costs stamina, and a tired fighter is slow.

Hold block to soak up most of the damage; raise it just before the punch lands for a perfect block that staggers the attacker. Dodge left, right or duck at the last moment for a perfect dodge and a counter that hits half as hard again.

Clean hits fill the special meter. When it glows, unleash your president's special move. Knocked down? Mash any punch to get up before the count of 10.

Keys: J jab, K hook, L uppercut, I special, Space hold to block, A / D dodge, S duck, Esc pause, M mute. Two players: P1 F G H punch, T special, W block, A S D dodge; P2 1 2 3 punch, 4 special, ↑ block, ← ↓ → dodge. On a phone: punch buttons on the right, swipe on the left half to dodge.