Puzzle Games

The Proof! tabletop card game is the inspiration behind our free, online Math Puzzle Challenges. Each carefully constructed puzzle consists of a set of nine cards that hides a challenging equation. This is a hand-picked selection of our trickier math puzzles that might involve some out-of-the-box thinking. If you would like, you can create an account to save your progress. Or if you already have an account, you can log in.