Shikaku

Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

Video Tutorial

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This Month
1.	numbrr	00:06.52
2.	ypw19	00:11.22
3.	Eskimosnake	00:13.57
4.	qobi	00:14.29
5.	GeorgPfleger	00:15.29
6.	Goomy	00:16.01
7.	syucream	00:16.31
8.	lew	00:16.58
9.	Kyra05	00:16.91
10.	RichWoods	00:18.95
11.	Arok	00:19.18
12.	HDXX123456789	00:19.59
13.	Krpyy	00:23.79
14.	DevSlicer	00:23.99
15.	DJdeMaster	00:24.71
16.	Dorice	00:24.82
17.	zhanglin1982	00:27.74
18.	廖得然	00:28.51
19.	angelina4fina	00:28.82
20.	dbut2	00:31.65

This Week
1.	GeorgPfleger	00:16.58
2.	Arok	00:19.18
3.	HDXX123456789	00:19.59
4.	RichWoods	00:23.77
5.	Krpyy	00:23.79
6.	DJdeMaster	00:24.71
7.	Dorice	00:25.92
8.	廖得然	00:28.51
9.	DevSlicer	00:28.95
10.	Rinno	00:32.26
11.	IzAlexandre2	00:34.41
12.	NNU未央	00:41.69
13.	wyq97	00:44.29
14.	liora nasya	00:45.46
15.	RavenSandcastle	00:50.05
16.	abandon777	01:10.68
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	GeorgPfleger	00:23.90
2.	Rinno	00:32.26
3.	Dorice	00:49.48
4.	RavenSandcastle	00:50.05
5.	--- empty ---	--:--
6.	--- empty ---	--:--
7.	--- empty ---	--:--
8.	--- empty ---	--:--
9.	--- empty ---	--:--
10.	--- empty ---	--:--
11.	--- empty ---	--:--
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

MO3
1.	zahhydude1	00:08.04
2.	vowels	00:08.48
3.	demian2	00:08.79
4.	bearn	00:09.79
5.	Tobi Ente	00:09.97
6.	coolcoolguy65	00:10.12
7.	numbrr	00:10.50
8.	JZE	00:11.52
9.	Vicellen	00:12.39
10.	haramey	00:12.60

AO5
1.	zahhydude1	00:08.32
2.	vowels	00:09.47
3.	demian2	00:09.82
4.	Tobi Ente	00:10.47
5.	numbrr	00:10.79
6.	bearn	00:11.41
7.	coolcoolguy65	00:12.11
8.	JZE	00:12.31
9.	sfumato	00:12.97
10.	qqwref	00:13.05

AO12
1.	zahhydude1	00:10.30
2.	vowels	00:10.59
3.	Tobi Ente	00:12.08
4.	bearn	00:13.05
5.	coolcoolguy65	00:13.11
6.	numbrr	00:13.35
7.	demian2	00:13.78
8.	JZE	00:15.61
9.	qqwref	00:15.82
10.	sfumato	00:16.09

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	Charlie Li	00:00.208
3.	Paul Bismuth	00:02.423

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2025-03-28 16:46:31

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