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.	Tobi Ente	00:08.76
2.	GeorgPfleger	00:14.18
3.	Flexo	00:16.28
4.	Goomy	00:17.08
5.	qobi	00:17.50
6.	liora nasya	00:17.57
7.	Dorice	00:17.64
8.	yzl497	00:17.87
9.	Yeti	00:18.11
10.	Nippo	00:19.12
11.	SirDiscalot	00:19.16
12.	Arok	00:19.18
13.	Truth-or-Peace	00:19.22
14.	HDXX123456789	00:19.59
15.	RichWoods	00:21.63
16.	jaripetteri	00:21.76
17.	asatzhh	00:25.47
18.	prinsed	00:26.39
19.	Lanmo	00:28.00
19.	leseker	00:28.00

This Week
1.	Tobi Ente	00:08.76
2.	GeorgPfleger	00:14.18
3.	Flexo	00:16.28
4.	SirDiscalot	00:19.16
5.	HDXX123456789	00:19.59
6.	qobi	00:21.43
7.	RichWoods	00:21.63
8.	asatzhh	00:25.47
9.	prinsed	00:26.39
10.	jaripetteri	00:31.38
11.	Dorice	00:36.43
12.	Lucky SAM	00:48.05
13.	MahjongLyonnais	01:02.82
14.	MrBucket1488Home	01:29.56
15.	九曜	02:36.92
16.	BeeinSpace	02:45.32
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	--- empty ---	--:--
2.	--- empty ---	--:--
3.	--- empty ---	--:--
4.	--- empty ---	--:--
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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2025-04-25 05:52:22

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