Squaring ©
Rules
Divide the grid into multiple areas whose circumscribing rectangles are 4×4 \nsquares, i.e., which each span four columns and four rows. Inside the boundaries\nof one area there may not be any additional separating lines, therefore each of \nthe given ones actually divides two different areas.
Sample puzzles
EASY
MEDIUM
HARD
EVIL
All puzzles © by puzzlephil
Squaring puzzles with circumscribing 3x3 squares:
Squaring 3x3 #1
Squaring 3x3 #1
Squaring 3x3 #1
Squaring 3x3 #1
Squaring puzzles with circumscribing 5x5 squares: