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.

Video Tutorial
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Shikaku


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

New Puzzle
This Month
1. coolcoolguy65
181
 00:01.94
2. FxdeSlxyr
10
 00:03.04
2. Idiot! ¯\_(ツ)_/¯
7
 00:03.04
4. email74
39
 00:03.10
5. Chen Jiakai
21
 00:03.34
6. finnn
13
 00:03.37
7. huohuo2004
49
 00:03.54
8. cyrex45
20
 00:03.68
9. Seakulta 00:03.70
10. wturh
19
 00:03.81
11. qobi
240
 00:03.86
12. llmt9
101
 00:03.98
13. CamPuzzle
40
 00:04.03
14. OneaTy
24
 00:04.23
15. Exxmurf
5
 00:04.24
16. SpaceCow 00:04.44
17. Nebbo 00:04.60
18. Muhsal 00:04.62
19. Workz
10
 00:04.65
20. daspore 00:04.71
This Week
1. email74
39
 00:03.10
2. Seakulta 00:03.70
3. llmt9
101
 00:04.01
4. finnn
13
 00:04.04
5. Idiot! ¯\_(ツ)_/¯
7
 00:04.18
6. Workz
10
 00:04.65
7. DivineToast
10
 00:04.77
8. bigtexican 00:04.80
9. GeorgPfleger
100
 00:05.12
10. Player36
10
 00:05.34
11. prealitytv 00:05.42
12. lazysloth 00:05.90
13. dirkdiggler 00:06.21
14. Radster042 00:06.39
15. Manutea
7
 00:06.40
16. zhanglin1982
77
 00:06.45
17. HotBlondesNearU 00:06.49
18. nuhaera 00:07.08
19. egwar56
9
 00:07.15
20. Srihari 00:07.16
Today
1. email74
39
 00:03.10
2. llmt9
101
 00:04.36
3. bigtexican 00:04.80
4. GeorgPfleger
100
 00:05.71
5. DivineToast
10
 00:05.80
6. zhanglin1982
77
 00:06.45
7. HotBlondesNearU 00:06.49
8. Srihari 00:07.16
9. IanTheG
16
 00:08.94
10. prealitytv 00:09.36
11. vyrmin
7
 00:10.06
12. NOAHTHAGOAT 00:10.99
13. lanibani8
2
 00:12.16
14. ggwwe 00:12.88
15. DaBros
1
 00:20.04
16. whatwhenwhy
2
 00:34.31
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. zahhydude1
218
 00:01.42
2. vowels
216
 00:01.80
3. CYrZx123
55
 00:01.95
4. nabi
92
 00:02.07
5. demian2
61
 00:02.29
5. BingBongBob
108
 00:02.29
7. coolcoolguy65
181
 00:02.36
8. jaybrainer
275
 00:02.54
9. numbrr
322
 00:02.70
10.anonymous
11
 00:02.73
AO5
1. zahhydude1
218
 00:01.43
2. vowels
216
 00:01.94
3. CYrZx123
55
 00:02.05
4. nabi
92
 00:02.21
5. BingBongBob
108
 00:02.40
6. demian2
61
 00:02.44
7. coolcoolguy65
181
 00:02.55
8. numbrr
322
 00:02.61
9. jaybrainer
275
 00:02.88
10.anonymous
11
 00:02.89
AO12
1. zahhydude1
218
 00:01.67
2. vowels
216
 00:02.02
3. CYrZx123
55
 00:02.35
4. nabi
92
 00:02.41
5. coolcoolguy65
181
 00:02.79
6. demian2
61
 00:02.86
7. BingBongBob
108
 00:02.88
8.anonymous
11
 00:02.94
9. jaybrainer
275
 00:03.00
10. numbrr
322
 00:03.21
Robots / programmatic solversinfo  
1.dbut2
43
00:00.003
2.tlstyer
151
00:00.006
3.Charlie Li
61
00:00.211

* 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.
You need to be logged in to track your averages

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