This clever version of tick-tack-toe never ends in a tie. There are three O pieces, which also are numbered 1, 3 and 5, and three X pieces, numbered 2, 4 and 6. If your first game of tick-tack-toe ends in a tie, then play continues based on the numbers 1 through 6 that are on the pieces. Number 1 (an O) moves first to another open spot on the board. Then Number 2 takes a turn (an X) , then Number 3, and so on, until a player gets three X's or O's in a row. It takes real thought and makes tick-tack-toe fun again.