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.	JZE	00:02.93
2.	Parade	00:03.05
3.	Yuyinraoliang_1	00:03.12
4.	Krpyy	00:03.43
5.	becka	00:03.47
6.	cugntear	00:03.80
7.	ackbey	00:03.84
8.	Atilla Mustafa	00:03.93
9.	ackbey2	00:04.04
10.	qobi	00:04.23
11.	Matheart	00:04.34
12.	pouldu	00:04.72
13.	HDXX123456789	00:04.88
14.	grimmgirlfandom	00:04.99
14.	GeorgPfleger	00:04.99
16.	ys56	00:05.02
17.	zibigibi	00:05.14
18.	CHHYHP	00:05.20
19.	Dorice	00:05.28
20.	Lanmo	00:05.36

This Week
1.	Parade	00:03.05
2.	Yuyinraoliang_1	00:03.12
3.	zibigibi	00:05.14
4.	becka	00:05.42
5.	jeszon	00:05.76
6.	GeorgPfleger	00:05.79
6.	dynesonne	00:05.79
8.	pato3042	00:06.45
9.	OpOnion	00:07.41
10.	BurgerofTruth	00:07.46
11.	qobi	00:07.66
12.	HackMan	00:08.38
13.	llmt9	00:08.97
14.	appleyakult	00:09.03
15.	sronse	00:09.10
16.	batuhanarda	00:10.23
17.	rob69	00:11.25
18.	KukushkinLyon	00:12.18
19.	FunAcroFly	00:15.04
20.	psydemerde	00:18.16

Today
1.	GeorgPfleger	00:05.79
1.	dynesonne	00:05.79
3.	OpOnion	00:07.41
4.	batuhanarda	00:10.23
5.	teacherW66	00:22.11
6.	CLAVDIVS	00:22.54
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	00:01.47
2.	vowels	00:01.80
3.	CYrZx123	00:02.04
4.	nabi	00:02.07
5.	demian2	00:02.29
5.	BingBongBob	00:02.29
7.	jaybrainer	00:02.72
7.	numbrr	00:02.72
9.	anonymous	00:02.73
10.	JZE	00:02.79

AO5
1.	zahhydude1	00:01.56
2.	vowels	00:01.94
3.	CYrZx123	00:02.16
4.	nabi	00:02.21
5.	BingBongBob	00:02.40
6.	demian2	00:02.44
7.	numbrr	00:02.83
8.	jaybrainer	00:02.88
9.	anonymous	00:02.89
10.	JZE	00:03.01

AO12
1.	zahhydude1	00:01.76
2.	vowels	00:02.02
3.	nabi	00:02.41
4.	CYrZx123	00:02.52
5.	demian2	00:02.86
6.	BingBongBob	00:02.88
7.	anonymous	00:02.94
8.	numbrr	00:03.22
8.	jaybrainer	00:03.22
10.	Vicell	00:03.30

Robots / programmatic solvers		info
1.	tlstyer	00:00.006
2.	Charlie Li	00:00.211
3.	Paul Bismuth	00:01.045

* 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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2025-06-30 22:42:02

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