3 Try to empty the playing area completely, by removing connected
4 groups of two or more squares of the same colour. Then try to score
5 as much as possible, by removing large groups at a time instead of
8 Click on a coloured square to highlight the rest of its connected
9 group. The status line will print the number of squares selected,
10 and the score you would gain by removing them. Click again to remove
11 the group; other squares will fall down to fill the space, and if
12 you empty a whole column then the other columns will move up. You
13 cannot remove a single isolated square: try to avoid dead-end
14 positions where all remaining squares are isolated.