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
180
 00:01.94
2. FxdeSlxyr
10
 00:02.86
3. Idiot! ¯\_(ツ)_/¯
7
 00:03.04
4. Chen Jiakai
20
 00:03.25
5. finnn
11
 00:03.37
6. huohuo2004
49
 00:03.54
7. cyrex45
19
 00:03.68
8. Seakulta 00:03.70
8. ciisq
7
 00:03.70
10. wturh
19
 00:03.81
11. qobi
240
 00:03.86
12. llmt9
101
 00:03.98
13. CamPuzzle
39
 00:04.03
14. lennian123 00:04.08
15. Joseph12 00:04.15
16. Poeut 00:04.22
17. OneaTy
24
 00:04.23
18. Exxmurf
5
 00:04.24
19. SpaceCow 00:04.44
20. liang23 00:04.52
This Week
1. finnn
11
 00:03.37
2. Seakulta 00:03.70
3. llmt9
101
 00:04.01
4. Idiot! ¯\_(ツ)_/¯
7
 00:04.18
5. Workz
9
 00:04.65
6. dirkdiggler 00:04.72
7. DivineToast
10
 00:04.77
8. cyrex45
19
 00:05.01
9. wallickdeez
25
 00:05.07
10. SmthSmthPlayer 00:05.20
11. bigtexican 00:05.26
12. Player36
5
 00:05.34
13. prealitytv 00:05.42
14. Izzy777 00:05.44
15. zhanglin1982
76
 00:05.53
16. GeorgPfleger
100
 00:05.71
17. seanmvrvrvvrth
6
 00:05.75
18. lazysloth 00:05.90
19. Tweej
2
 00:05.95
20. Manutea
5
 00:06.40
Today
1. Seakulta 00:03.70
2. Idiot! ¯\_(ツ)_/¯
7
 00:04.18
3. Player36
5
 00:05.34
4. DivineToast
10
 00:05.84
5. Manutea
5
 00:06.40
6. GeorgPfleger
100
 00:06.74
7. egwar56
8
 00:07.15
8. Liliumauratum
44
 00:09.37
9. derpduck 00:10.76
10. Sharkyy76 01:01.32
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
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
180
 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
180
 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
180
 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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