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	00:32.78
2.	DukeAmsterdam	00:56.32
3.	Koken	01:04.89
4.	llmt9	01:05.81
5.	yiran	01:12.14
6.	Yuyinraoliang	01:12.34
7.	kakmalva	01:21.84
8.	Lanmo	01:26.21
9.	GeorgPfleger	01:27.48
10.	eatatjoes	01:34.31
11.	WoenzelaarN	01:37.16
12.	ihaveit	01:37.62
13.	booklover2030	01:47.15
14.	cinnamonbun22	01:48.51
15.	meep54	01:49.42
16.	Yveltal	01:50.69
17.	Dorice	01:52.24
18.	jagun	01:55.71
19.	Sinews	01:57.13
20.	selenae	02:10.77

This Week
1.	coolcoolguy65	00:32.78
2.	DukeAmsterdam	00:56.32
3.	Koken	01:04.89
4.	llmt9	01:05.81
5.	Yuyinraoliang	01:12.34
6.	kakmalva	01:21.84
7.	Lanmo	01:26.21
8.	GeorgPfleger	01:27.48
9.	WoenzelaarN	01:37.16
10.	eatatjoes	01:51.86
11.	jagun	01:55.71
12.	selenae	02:10.77
13.	inseo	02:14.98
14.	p.b.	02:55.51
15.	Dorice	03:15.28
16.	BestSlanterEver	03:16.26
17.	noahtheboa	04:04.36
18.	Paul995	04:38.93
19.	yosiaki	04:43.23
20.	ZRui2002	06:26.45

Today
1.	llmt9	01:12.14
2.	GeorgPfleger	01:27.48
3.	Yuyinraoliang	01:40.93
4.	jagun	01:55.71
5.	Lanmo	02:13.66
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.	coolcoolguy65	00:38.48
2.	vowels	00:41.60
3.	bearn	00:45.18
4.	demian2	00:55.33
5.	zahhydude1	00:56.42
6.	qqwref	00:57.96
7.	mp3some	01:03.41
8.	hoodxxc	01:03.86
9.	Icay	01:04.54
10.	Namae	01:05.68

AO5
1.	vowels	00:44.38
2.	coolcoolguy65	00:44.63
3.	bearn	00:53.87
4.	zahhydude1	01:00.15
5.	qqwref	01:01.66
6.	hoodxxc	01:03.89
7.	mp3some	01:05.85
8.	demian2	01:06.28
9.	major414	01:10.67
10.	mtanzer	01:13.59

AO12
1.	vowels	00:51.97
2.	coolcoolguy65	00:51.98
3.	bearn	01:00.73
4.	zahhydude1	01:10.35
5.	qqwref	01:11.21
6.	mp3some	01:16.44
7.	Icay	01:23.31
8.	hoodxxc	01:23.77
9.	mtanzer	01:25.15
10.	major414	01:27.00

Robots / programmatic solvers		info
1.	tlstyer	00:00.009
2.	Charlie Li	00:00.967
3.	--- empty ---	--:--

* 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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2024-04-20 10:51:43

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