Halex Madison II Owner's Manual And Instructions page 21

Halex Electronic Dartboard _ 21
This is a very challenging 2-player game that is best suited for players of advanced skill.
One player will play the role of the cat and the other will be the mouse. The object of the
game is for the mouse to get back to his hole before being caught by the cat. The mouse
starts first from the "20" segment and proceeds counter-clockwise around the dartboard by
hitting first the double segment and then the single of each segment. The cat starts back
at the "18" segment and proceeds counter clockwise around the dartboard to catch the
mouse by hitting doubles only of each segment. If the mouse makes it all the way around
the board back to the double 20, the mouse wins the game. If the cat hits the double
segment that the mouse is on, the cat has caught the mouse and has won the game.