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.	demian2	00:01.83
2.	vowels	00:02.60
3.	Zahhydude2	00:02.63
4.	eonhochang	00:02.98
5.	ackbey	00:03.31
5.	09Ash	00:03.31
7.	rangkey	00:03.67
8.	businesspig1	00:03.71
9.	GlowBlock64	00:03.82
10.	BingBongBob	00:03.89
11.	jai22933	00:03.96
12.	G1LLi	00:04.33
13.	snowiyy	00:04.51
14.	qobi	00:04.60
15.	Sushi554	00:04.68
16.	DorianSmiles88	00:05.02
17.	Another	00:05.09
18.	Simon Gidrewicz	00:05.15
19.	GeorgPfleger	00:05.20
20.	shahar	00:05.25

This Week
1.	09Ash	00:03.31
2.	ackbey	00:03.66
3.	DorianSmiles88	00:05.02
4.	GeorgPfleger	00:05.20
5.	shahar	00:05.25
6.	charliejs2002	00:05.38
7.	Einsteinus	00:05.79
8.	Kyra05	00:05.84
9.	probably	00:05.87
10.	sapphire	00:05.95
11.	soup34	00:07.82
12.	TheVinn	00:08.55
13.	EpimetheusElmerGlue	00:08.63
14.	germansnorter	00:08.99
15.	math012	00:09.04
16.	Juv4xxYT	00:09.24
17.	bestofriendo	00:09.38
18.	INeedMore_Coffee	00:09.62
19.	peha13	00:10.38
20.	joemama420	00:10.78

Today
1.	ackbey	00:04.41
2.	GeorgPfleger	00:05.20
3.	soup34	00:07.82
4.	INeedMore_Coffee	00:09.62
5.	--- empty ---	--:--
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.	vowels	00:02.27
2.	demian2	00:02.29
3.	sfumato	00:02.91
4.	jai22933	00:03.04
5.	Vicell	00:03.11
6.	BingBongBob	00:03.16
7.	mtanzer	00:03.19
8.	nabifan	00:03.26
9.	qqwref	00:03.35
10.	PuzzleMaestro	00:03.49

AO5
1.	vowels	00:02.36
2.	demian2	00:02.44
3.	mtanzer	00:03.13
4.	Vicell	00:03.14
5.	BingBongBob	00:03.16
6.	sfumato	00:03.20
7.	jai22933	00:03.21
8.	qqwref	00:03.37
9.	nabifan	00:03.43
10.	PuzzleMaestro	00:03.62

AO12
1.	vowels	00:02.63
2.	demian2	00:02.86
3.	Vicell	00:03.30
4.	BingBongBob	00:03.48
5.	jai22933	00:03.51
6.	sfumato	00:03.64
7.	qqwref	00:03.73
8.	mtanzer	00:04.16
9.	bearn	00:04.26
10.	Fastfaxer	00:04.53

Robots / programmatic solvers		info
1.	tlstyer	00:00.009
2.	Charlie Li	00:00.709
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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2022-10-04 22:05:36

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