Every position has a forced mate — a move order that ends in checkmate no matter what your opponent does. Find the one move that starts it.

• Click a piece, then click where it goes. Only legal moves are offered.
• The key move is unique: a different move may win material, but it will not mate in time.
• Your opponent answers with its best defence; keep going until the board is mate.
• Hint lights up the piece to move — using it ends your streak.

Solving mating patterns is the fastest way to sharpen tactical vision: back-rank mates, smothered mates, and queen-and-knight nets all show up here.