40
104
100
33
4
20
24
102
115
60
10
12
90
38
54
9
12
112
44
88
60
56
5
8
5
2
2
2
4
5
2
7
27
5
10
42
5
12
12
3
5
5
5
3
5
2
3
4
28
24
8
4
6
2
2
3
2
6
2
2
8
4
2
2
2
2
3
2
9
3
5
2
4
2
6
5
2
4
3
8
3
4
2
2
2
4
4
2
2
6
2
2
2
2
2
2
4
2
1
2
1
2
1

master · 40 x 40

How to play

Divide the grid into rectangles and squares. Every shape must contain exactly one number, and its area must match that number.

Desktop

Click and drag to draw. Right-click a rectangle to remove it.

Mobile

Tap the first and last cell to draw. Press and hold to remove.

Found a problem? Send me an email and include your device and browser.