The players take turns in deleting lines from a picture until one player cannot move.
One player draws a picture consisting of dots joined by edges. Part of the picture should stand on the ground, represented by a dashed line; for example:
The players then take turns in deleting an edge. Any other parts of the picture that are no longer attached to the ground fall off, and are also deleted.
If you're playing with pencil and paper, cross out an edge to delete it, and then cross out any unattached parts. If you're playing on a whiteboard or blackboard you can rub out the deleted parts.
The last player able to move wins.
In the following game the second player, Red, has the last move and so wins:
Here are some examples of other pictures you could play with: