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.	coolcoolguy65	00:27.40
2.	rudi12	00:50.44
3.	MightyPig714	01:08.87
4.	daanbe	01:09.91
5.	PrankHDevil	01:10.81
6.	eatatjoes	01:12.02
7.	9jason	01:12.75
8.	oli g	01:14.41
9.	GeorgPfleger	01:15.73
10.	qobi	01:16.83
11.	rosebowl731	01:17.10
12.	P3nt4g0n	01:18.26
13.	Blobster	01:19.89
14.	siodmy	01:20.99
15.	milva10x	01:21.70
16.	elreyneo	01:23.78
17.	w4neon	01:24.39
18.	niamhjoy	01:25.70
19.	wrobsik	01:27.01
20.	Nikicz	01:27.85

This Week
1.	coolcoolguy65	00:27.40
2.	MightyPig714	01:08.87
3.	9jason	01:12.75
4.	oli g	01:14.41
5.	rosebowl731	01:17.10
6.	P3nt4g0n	01:18.26
7.	Blobster	01:19.89
8.	milva10x	01:21.70
9.	w4neon	01:24.39
10.	wrobsik	01:27.01
11.	micizl	01:28.29
12.	niamhjoy	01:29.11
13.	cel111ne	01:29.91
14.	LAURAA	01:30.12
15.	Amanda Abbott	01:30.71
16.	GeorgPfleger	01:33.43
17.	Simone Gaibani	01:38.45
18.	Kecso	01:43.39
19.	loser.emi	01:45.58
20.	Edijsss	01:46.66

Today
1.	coolcoolguy65	00:32.49
2.	cel111ne	01:29.91
3.	Blobster	01:32.49
4.	Upilota87	02:08.96
5.	GeorgPfleger	02:13.51
6.	tko720	02:15.70
7.	PoaGod	02:35.45
8.	LAURAA	02:40.80
9.	GiuseppeL30	02:42.32
10.	--- empty ---	--:--
11.	--- empty ---	--:--
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

MO3
1.	coolcoolguy65	00:35.53
2.	vowels	00:41.60
3.	bearn	00:45.18
4.	demian2	00:55.33
5.	zahhydude1	00:55.76
6.	tanginess	00:57.73
7.	qqwref	00:57.96
8.	JZE	00:58.13
9.	DukeAmsterdam	00:59.11
10.	keehaag	00:59.21

AO5
1.	coolcoolguy65	00:38.01
2.	vowels	00:44.38
3.	bearn	00:53.87
4.	zahhydude1	00:57.56
5.	keehaag	01:00.96
6.	qqwref	01:01.66
7.	JZE	01:01.76
8.	anonymous	01:02.17
9.	tanginess	01:02.53
10.	hoodxxc	01:03.89

AO12
1.	coolcoolguy65	00:45.63
2.	vowels	00:51.97
3.	bearn	01:00.73
4.	zahhydude1	01:10.35
5.	qqwref	01:11.21
6.	anonymous	01:12.93
7.	JZE	01:13.36
8.	keehaag	01:15.01
9.	DukeAmsterdam	01:15.45
10.	mp3some	01:16.44

Robots / programmatic solvers		info
1.	tlstyer	00:00.008
2.	Charlie Li	00:00.224
3.	Paul Bismuth	00:07.037

* 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.
You need to be logged in to track your averages

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2026-03-09 13:10:09

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