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	00:38.42
2.	Yuyinraoliang_1	00:48.27
3.	DukeAmsterdam	00:54.25
4.	syucream	01:05.66
5.	GeorgPfleger	01:17.99
6.	oversizedpixie	01:20.71
7.	qobi	01:20.73
8.	Jazka	01:36.23
9.	Goomy	01:40.12
10.	Dorice	01:42.65
11.	zebramachine	01:44.54
12.	Parade	01:48.05
13.	eatatjoes	01:48.07
14.	yiran	01:50.36
15.	Jen Jay	01:50.61
16.	yzl497	02:00.75
17.	heystonegalaxy	02:05.13
18.	Martha Stewart	02:05.49
19.	egosi	02:10.20
20.	dtyamada	02:10.83

This Week
1.	DukeAmsterdam	00:54.25
2.	syucream	01:05.66
3.	GeorgPfleger	01:36.45
4.	Jen Jay	01:50.61
5.	yzl497	02:00.75
6.	p.b.	02:27.09
7.	Dorice	02:35.52
8.	liora nasya	02:58.91
9.	stharnliu	03:02.44
10.	Deathranger999	03:46.10
11.	llydblr	05:58.00
12.	chiefwild	16:40.83
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Today
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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.	qqwref	00:57.96
7.	JZE	00:58.13
8.	DukeAmsterdam	00:59.11
9.	numbrr	00:59.80
10.	anonymous	01:00.82

AO5
1.	coolcoolguy65	00:39.36
2.	vowels	00:44.38
3.	bearn	00:53.87
4.	zahhydude1	00:57.56
5.	qqwref	01:01.66
6.	JZE	01:01.76
7.	anonymous	01:02.17
8.	hoodxxc	01:03.89
9.	DukeAmsterdam	01:04.29
10.	numbrr	01:05.68

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.	DukeAmsterdam	01:15.45
8.	mp3some	01:16.44
9.	Yuyinraoliang	01:19.75
10.	numbrr	01:21.16

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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2025-04-25 05:22:41

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