Two good players will always end noughts and crosses with a draw.Mikhail Rudenko/AlamyOn the beach, scratching marks in the sand with a stick, my 4-year-old son was already good enough to force a draw in noughts and crosses, also known as tic-tac-toe.In case there is anyone on the planet unfamiliar with this game, it is played on a 3 3 grid, with players taking turns to add their symbol an X or an O in one of the spaces. The winner is the first to place three of their symbols in a row horizontally, vertically or diagonally.