manual

58
The pictures of the submarines include parts that you can
move and join with others.
When you turn the disk clockwise, no submarine disappears, but the
different parts that make up the pictures redistribute themselves among the
remaining ships.
Like this you see
11 submarines.
Like this you see
10 submarines.
When 11 subs are visible, every one
is made up of 10 parts.
When 10 subs are visible, every
one is made up of 11 parts.