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. finnn 00:03.14
4. oli g
29
 00:03.17
5. Flounder
122
 00:03.30
6. ClementLauw
8
 00:03.31
7. FxdeSlxyr
7
 00:03.42
8. pilott
14
 00:03.45
9. NunSmacker 00:03.50
9. citcitcitron
4
 00:03.50
11. Hedran
111
 00:03.67
12. AgentTosia
8
 00:03.71
13. miggy
163
 00:03.73
14. Green.wolf._
10
 00:03.74
15. bschm1tty
9
 00:03.83
16. Jhinnn 00:03.86
17. austinz
121
 00:03.92
18. Idiot! ¯\_(ツ)_/¯
6
 00:03.94
19. qobi
237
 00:04.00
20. Exxmurf
5
 00:04.01
This Week
1. FxdeSlxyr
7
 00:03.42
2. Chen Jiakai
20
 00:03.60
3. CamPuzzle
30
 00:03.78
4. oli g
29
 00:03.79
5. Idiot! ¯\_(ツ)_/¯
6
 00:03.94
6. Shikacouille 00:04.30
7. Rodin172 00:04.40
7. Ole187
6
 00:04.40
9. cz123 00:04.53
10. finnn 00:04.62
11. Maël
17
 00:04.80
12. Ricter 00:04.84
13. Arcti 00:04.94
14. ErikLink 00:04.97
15. Izzy777 00:04.98
16. PlayStS2
11
 00:05.01
17. ethan1021
12
 00:05.09
18. DBWwushen
11
 00:05.14
19. ykpcntrk 00:05.18
20. SunriseAR 00:05.27
Today
1. finnn 00:04.62
2. elementz 00:05.37
3. OneaTy
24
 00:05.52
4. xc0xupx
46
 00:07.32
5. PumpkinPants
6
 00:09.19
6. 4nt0o 00:14.20
7. Jihyu 00:24.91
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
213
 00:01.45
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
213
 00:01.56
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
213
 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.
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