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.	Yuyinraoliang	00:03.30
2.	Green.wolf._	00:03.34
3.	John BidenBlast	00:03.41
4.	vilodi	00:03.48
5.	coolcoolguy65	00:03.52
6.	thall	00:04.33
7.	yzbasdasd	00:04.42
8.	KingRose	00:04.43
9.	oddmaude	00:04.52
10.	Kortastic	00:04.64
11.	pato3042	00:04.83
11.	Lanmo	00:04.83
13.	AlistairMacAllister	00:04.85
14.	GeorgPfleger	00:05.02
15.	Dorice	00:05.23
16.	dynesonne	00:05.27
17.	SirDiscalot	00:05.44
18.	imboreed	00:05.60
19.	Beastinboston	00:05.62
20.	MarlingMath	00:05.73

This Week
1.	vilodi	00:03.48
2.	pato3042	00:04.83
2.	Green.wolf._	00:04.83
4.	GeorgPfleger	00:05.02
5.	shallwe	00:05.94
6.	Lanmo	00:06.10
7.	toryx68	00:06.75
8.	teacherW66	00:07.29
9.	uranium0718	00:07.82
10.	Conceited_2	00:08.92
11.	gentleben	00:08.99
12.	HackMan	00:09.09
13.	Ebotreson	00:11.73
14.	CLAVDIVS	00:14.91
15.	giadacoricciati	01:53.18
16.	--- empty ---	--:--
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	00:01.45
2.	vowels	00:01.80
3.	CYrZx123	00:01.95
4.	nabi	00:02.07
5.	demian2	00:02.29
5.	BingBongBob	00:02.29
7.	jaybrainer	00:02.54
8.	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	00:02.05
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	00:01.74
2.	vowels	00:02.02
3.	CYrZx123	00:02.35
4.	nabi	00:02.41
5.	demian2	00:02.86
6.	BingBongBob	00:02.88
7.	anonymous	00:02.94
8.	jaybrainer	00:03.00
9.	numbrr	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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2026-01-05 03:46:29

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