Roman strategy game

Terni lapilli was drawn in shape of boxes, crossed lines and especially in a wheel shaped diagram on the stones of ambulatories of amphitheatres, on floors if public monuments and on many steps of theatres. This game is the ancestor of the modern Tic-Tac-Toe, but has different rules that make the game very interesting compared with the current version. Because of its simplicity, is recommended for the purpose to learn the logic of the board games.