T'uk T'uk is a blocking game played in West Africa. Unlike most other blocking games, it is played on a grid. According to tradition, it is a griot, or storyteller, who challenges a shepherd to the game, but the griot knows the trick of how to win every time.
Rules
Square grid of 36, 64, 100, or 144 squares. Each player has one piece lined up in each square on opposite sides of the square. Players may move their piece forward or backwards orthogonally any distance. The player who blocks the opponent from being able to move wins.