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.	qobi	00:31.59
2.	GeorgPfleger	00:33.53
3.	syucream	00:36.35
4.	Yeti	00:37.54
5.	Goomy	00:38.82
6.	liora nasya	00:43.50
7.	Truth-or-Peace	00:44.34
8.	Dorice	00:47.05
9.	Jazka	00:49.59
10.	Lanmo	00:50.10
11.	jaripetteri	00:57.16
12.	siaalove	01:02.11
13.	HDXX123456789	01:09.01
14.	egosi	01:11.83
15.	dodo's play	01:14.11
16.	leseker	01:16.61
17.	预防老年痴呆	01:17.09
18.	crema	01:19.79
19.	Peanutmobile	01:33.56
20.	OneTrueGoon	01:35.08

This Week
1.	qobi	00:31.59
2.	Goomy	00:38.82
3.	GeorgPfleger	00:38.95
4.	Dorice	00:56.20
5.	siaalove	01:02.11
6.	HDXX123456789	01:09.01
7.	jaripetteri	01:09.43
8.	zardmyers	02:02.75
9.	Mehdi Naderi	03:23.24
10.	九曜	03:51.94
11.	--- empty ---	--:--
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17.	--- empty ---	--:--
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19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	zardmyers	02:02.75
2.	--- empty ---	--:--
3.	--- empty ---	--:--
4.	--- empty ---	--:--
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.	zahhydude1	00:17.66
2.	vowels	00:17.91
3.	demian2	00:19.43
4.	coolcoolguy65	00:19.84
5.	bearn	00:20.58
6.	Luke Pickett	00:22.75
7.	numbrr	00:24.41
8.	Icay	00:25.90
9.	DukeAmsterdam	00:27.03
10.	JZE	00:27.11

AO5
1.	vowels	00:18.50
2.	zahhydude1	00:19.23
3.	demian2	00:21.11
4.	coolcoolguy65	00:21.75
5.	bearn	00:22.87
6.	Luke Pickett	00:24.18
7.	numbrr	00:25.40
8.	qqwref	00:26.32
9.	Yuyinraoliang_1	00:28.59
10.	JZE	00:29.03

AO12
1.	vowels	00:22.07
2.	zahhydude1	00:24.21
3.	coolcoolguy65	00:25.09
4.	bearn	00:26.73
5.	numbrr	00:29.02
6.	Luke Pickett	00:30.90
7.	Icay	00:31.14
8.	JZE	00:31.23
9.	qqwref	00:32.21
10.	sfumato	00:33.58

Robots / programmatic solvers		info
1.	tlstyer	00:00.007
2.	Charlie Li	00:00.213
3.	Paul Bismuth	00:03.112

* 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 05:20:15

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