Tic-Tac Twice! Board Game

Tic-Tac Twice is deceptively simple. The rules are easy, but the math children learn is not. Strategy, not luck, wins the game. And unlike Tic-Tac Toe, no simple rule ("play in the middle") works. Instead, players use thinking skills to develop more complex strategies of play. Then they apply their strategies to the changing patterns on the boards to figure out what works and what doesn't. Logic and reasoning help them plan the right moves. In short, the brains of Tic-Tac Twice players shift into high gear. And that's no accident. Tic-Tac Twice is based on an algebraic principle and mathematical theory of games, a recent field of study.