Shikaku

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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.

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5x5 Shikaku | 7x7 Shikaku | 10x10 Shikaku | 15x15 Shikaku | 20x20 Shikaku | 25x25 Shikaku

This Month
1.	coolcoolguy65	00:24.64
2.	oli g	00:40.93
3.	numbrr	00:43.33
4.	DukeAmsterdam	00:44.71
5.	nessaim	00:55.87
6.	Cormachine	00:59.90
7.	obsessica	01:02.23
8.	xSaqe	01:03.58
9.	miggy	01:04.31
10.	sillydomi	01:04.39
11.	Jaro00	01:06.05
12.	elinor0406	01:08.20
13.	laozi	01:09.67
14.	supertf	01:09.79
15.	loser.emi	01:10.24
16.	Jtf2 _PT	01:13.26
17.	rosebowl731	01:13.74
18.	dave dave	01:14.85
19.	MartinOlejník	01:15.42
20.	bantz	01:16.35

This Week
1.	coolcoolguy65	00:29.85
2.	oli g	00:56.85
3.	Jaro00	01:06.05
4.	laozi	01:09.67
5.	obsessica	01:12.86
6.	dave dave	01:14.85
7.	elinor0406	01:15.23
8.	MartinOlejník	01:15.42
9.	konna12	01:22.59
10.	Simone Gaibani	01:23.19
11.	magare	01:24.41
12.	finnn	01:25.72
13.	shinyhair	01:26.02
14.	bantz	01:27.88
15.	Kecso	01:28.34
16.	micizl	01:29.86
17.	Amelgf	01:33.03
18.	magicalgriffon	01:34.93
19.	luoyue	01:37.15
20.	xzz1772	01:39.17

Today
1.	coolcoolguy65	00:29.85
2.	konna12	01:26.04
3.	magicalgriffon	01:34.93
4.	dave dave	01:43.26
5.	CamPuzzle	01:43.49
6.	silura	02:04.33
7.	thejmase	02:06.51
8.	Célestin1	02:10.62
9.	RyanC	02:15.47
10.	Randar	02:25.02
11.	ElPatron	02:29.01
12.	meowmeower	02:38.85
13.	Ellie	02:44.37
14.	LovetoplayWiiU	02:54.17
15.	tko720	02:54.73
16.	meggggggannnn24	03:06.11
17.	shhhhmbiote	03:11.66
18.	playerkateot123	03:29.53
19.	Lucycc	03:41.08
20.	bazaza	03:59.59

MO3
1.	coolcoolguy65	00:32.42
2.	vowels	00:41.60
3.	bearn	00:45.18
4.	demian2	00:55.33
5.	zahhydude1	00:55.76
6.	numbrr	00:56.76
7.	tanginess	00:57.73
8.	qqwref	00:57.96
9.	JZE	00:58.13
10.	DukeAmsterdam	00:59.11

AO5
1.	coolcoolguy65	00:36.86
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	00:44.38
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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