Freestyle · Attack

Double threat.

A double threat is one move that leaves your opponent two winning points to answer at once. They can block only one, so your next move wins — unless they already had a forced win of their own.

Try it: make the double threat

Black has an open three. Either of two moves turns it into a four with both ends open — two provable winning points in a single move. Solve once, then reset and try the other side.