Cross: The region containing a cross must be a square.
Horizontal Bar: The region containing a horizontal bar must be wider than it is tall.
Vertical Bar: The region containing a vertical bar must be taller than it is wide.
Region Restrictions:
Each region must contain exactly one symbol.
No grid dot can be shared by the corners of four different regions.
Each region must contain exactly one symbol.
No grid dot can be shared by the corners of four different regions.