Tapping a node flips it and every node connected to it by a trace. Flipping a live node kills it; flipping a dead node powers it.
Power every node and the circuit closes. Par is the minimum number of taps a perfect solve needs — match it for a full ⚡⚡⚡.
TO GO reads how close you are — CLOSE / WARM / FAR. Tap it to swap in an exact tap count if you want the assist. A teal flash means your last tap moved you closer; a red flash means it set you back — tap the same node again to take it back.
One board per day. Everyone gets the same one. Streaks are earned daily; practice boards are unlimited and don't count.