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	00:02.39
2.	Yuyinraoliang_1	00:02.72
3.	ackbey2	00:03.31
4.	ackbey	00:03.43
5.	nyg0314	00:03.57
6.	fight D	00:03.82
7.	laKira	00:04.36
8.	FranciszekRemus	00:04.38
9.	prinsed	00:04.39
10.	Vasek Dousa	00:04.44
11.	Richrrad	00:04.77
12.	Jazka	00:05.08
13.	EC31	00:05.17
14.	Dorice	00:05.28
14.	Lanmo	00:05.28
16.	xtlwjh0818	00:05.55
17.	grimmgirlfandom	00:05.63
18.	qobi	00:05.76
19.	ktlesser11	00:05.80
20.	Serrotecarai	00:05.98

This Week
1.	Yuyinraoliang	00:02.98
2.	prinsed	00:04.39
3.	Vasek Dousa	00:04.44
4.	Dorice	00:05.28
5.	laKira	00:05.31
6.	ktlesser11	00:05.80
7.	dynesonne	00:06.40
8.	GeorgPfleger	00:06.93
9.	dtyamada	00:06.94
10.	bestofriendo	00:07.05
11.	ColMustard	00:07.51
12.	Sombro64	00:07.81
13.	pj746w	00:07.88
14.	pato3042	00:07.94
15.	Dragonslayer4000	00:08.33
15.	G VOLTT	00:08.33
17.	OpOnion	00:08.47
18.	shallwe	00:09.18
19.	Phocks	00:09.81
20.	Mollydixonx	00:09.98

Today
1.	Yuyinraoliang	00:03.32
2.	laKira	00:05.31
3.	bestofriendo	00:07.05
4.	GeorgPfleger	00:07.22
5.	pato3042	00:07.94
6.	shallwe	00:09.43
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	00:01.62
2.	vowels	00:01.80
3.	nabi	00:02.07
4.	demian2	00:02.29
4.	BingBongBob	00:02.29
6.	numbrr	00:02.73
7.	jaybrainer	00:02.76
8.	JZE	00:02.79
9.	qqwref	00:02.82
10.	sfumato	00:02.91

AO5
1.	zahhydude1	00:01.66
2.	vowels	00:01.94
3.	nabi	00:02.21
4.	BingBongBob	00:02.40
5.	demian2	00:02.44
6.	numbrr	00:02.83
7.	jaybrainer	00:02.88
8.	JZE	00:03.01
9.	coolcoolguy65	00:03.05
10.	mtanzer	00:03.13

AO12
1.	zahhydude1	00:01.86
2.	vowels	00:02.02
3.	nabi	00:02.41
4.	demian2	00:02.86
5.	BingBongBob	00:02.88
6.	jaybrainer	00:03.22
7.	Vicell	00:03.30
8.	numbrr	00:03.35
9.	bearn	00:03.47
10.	coolcoolguy65	00:03.51

Robots / programmatic solvers		info
1.	tlstyer	00:00.009
2.	Charlie Li	00:00.709
3.	Lils	00:07.159

* 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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2024-09-19 20:26:22

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