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	00:33.25
2.	rudi12	00:43.96
3.	Autuno	00:50.07
4.	yeshengxiaozu	00:54.00
5.	vowels	00:54.19
6.	keehaag	00:57.26
7.	MinSung	00:59.09
8.	eatatjoes	01:22.80
9.	GeorgPfleger	01:30.03
10.	Sokovik	01:30.37
11.	Flexo	01:31.26
12.	Dorice	01:34.60
13.	Lisa Gordon	01:36.05
14.	SniffTO	01:43.49
15.	kinbo71	01:47.60
16.	qobi	01:47.71
17.	chenh	01:57.19
18.	nysnuib	02:01.44
19.	trLBumm	02:02.29
20.	Eric Ho	02:02.62

This Week
1.	keehaag	00:57.26
2.	eatatjoes	01:22.80
3.	Sokovik	01:30.37
4.	Dorice	01:34.60
5.	SniffTO	01:43.49
6.	Flexo	01:50.85
7.	trLBumm	02:02.29
8.	ihateanalysis	02:09.79
9.	cheesekurtz	02:31.62
10.	MarkSnail	03:01.86
11.	imjoevegas	06:43.34
12.	missphy6	09:08.47
13.	--- empty ---	--:--
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Today
1.	eatatjoes	01:42.51
2.	--- empty ---	--:--
3.	--- empty ---	--:--
4.	--- empty ---	--:--
5.	--- empty ---	--:--
6.	--- empty ---	--:--
7.	--- empty ---	--:--
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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	00:47.66
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.
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2026-01-26 05:01:40

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