20
18
15
51
4
20
12
126
104
17
22
32
36
36
32
66
23
95
7
27
108
16
60
48
92
96
54
14
5
7
7
17
7
8
2
2
12
11
2
18
4
18
5
2
13
7
2
7
3
2
8
2
4
3
14
6
24
2
4
3
4
2
3
3
5
6
3
4
10
3
1
12
2
3
2
6
2
1
5
6
2
2
2
1
5
2
2
1
2
1
1
2
2
2
2
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.