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. CamPuzzle
30
00:02.73
2. Chen Jiakai
20
00:02.99
3. FxdeSlxyr
7
00:03.09
4. finnn 00:03.14
5. oli g
29
00:03.20
6. Flounder
122
00:03.30
7. ClementLauw
8
00:03.31
8. pilott
14
00:03.45
9. NunSmacker 00:03.50
9. citcitcitron
4
00:03.50
11. Hedran
112
00:03.67
12. AgentTosia
9
00:03.71
13. bschm1tty
9
00:03.83
14. Idiot! ¯\_(ツ)_/¯
6
00:03.84
15. Jhinnn 00:03.86
16. Izzy777 00:03.94
17. seanmvrvrvvrth
5
00:03.96
18. qobi
238
00:04.00
19. rosebowl731
24
00:04.02
20. TSabrinaL 00:04.10
This Week
1. FxdeSlxyr
7
00:03.09
2. oli g
29
00:03.24
3. Chen Jiakai
20
00:03.60
4. Idiot! ¯\_(ツ)_/¯
6
00:03.84
5. Izzy777 00:03.94
6. seanmvrvrvvrth
5
00:03.96
7. amaltea 00:04.34
8. Rodin172 00:04.40
9. Boldizsar Horthy
13
00:04.50
10. finnn 00:04.62
11. Ricter 00:04.79
12. Shikacouille 00:04.81
13. Arcti 00:04.94
14. duck1 00:04.95
15. cz123 00:05.08
16. MisiMisi 00:05.14
17. Megaaaaa 00:05.16
18. datn6a 00:05.18
19. SunriseAR 00:05.27
20. GeorgPfleger
99
00:05.29
Today
1. FxdeSlxyr
7
00:03.59
2. Idiot! ¯\_(ツ)_/¯
6
00:03.84
3. Izzy777 00:03.94
4. Chen Jiakai
20
00:04.09
5. Boldizsar Horthy
13
00:04.50
6. GeorgPfleger
99
00:05.29
7. elementz 00:05.45
8. piess 00:06.48
9. vergeofinsanity 00:06.61
10. notgulstern 00:07.43
11. Imkeeeee
4
00:07.94
12. fleecesnatcher 00:10.30
13. Alex222 00:10.77
14. apte1412 00:12.77
15. CLAVDIVS
78
00:20.21
16. baikalseal
1
00:26.58
17. 0mega
210
00:36.94
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. zahhydude1
214
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. jaybrainer
266
00:02.54
8. numbrr
321
00:02.70
9.anonymous
11
00:02.73
10. JZE
88
00:02.79
AO5
1. zahhydude1
214
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. numbrr
321
00:02.61
8. jaybrainer
266
00:02.88
9.anonymous
11
00:02.89
10. JZE
88
00:03.01
AO12
1. zahhydude1
214
00:01.74
2. vowels
216
00:02.02
3. CYrZx123
55
00:02.35
4. nabi
92
00:02.41
5. demian2
61
00:02.86
6. BingBongBob
108
00:02.88
7.anonymous
11
00:02.94
8. jaybrainer
266
00:03.00
9. numbrr
321
00:03.21
10. Vicell
9
00:03.30
Robots / programmatic solversinfo  
1.tlstyer
148
00:00.006
2.Charlie Li
61
00:00.211
3.Paul Bismuth
1
00:01.045

* 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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