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. fyro1 00:02.63
2. oli g
23
 00:02.83
3. coolcoolguy65
174
 00:02.95
4. DuStinkst
6
 00:02.98
5. thelegendary08
34
 00:03.03
6. ClementLauw
6
 00:03.11
7. Arok
115
 00:03.27
8. Skawt
12
 00:03.37
9. Andymeow 00:03.40
10. brtjpk
7
 00:03.46
11. nessaim 00:03.47
12. flaccoofshikaku 00:03.49
13. Whoname 00:03.59
14. giotskh
184
 00:03.63
15. FxdeSlxyr
5
 00:03.66
16. dave dave
8
 00:03.75
16. Kukko
170
 00:03.75
18. CamPuzzle
5
 00:03.76
19. ivbagbroke 00:03.80
20. Waterkip123 00:03.90
This Week
1. fyro1 00:02.63
2. DuStinkst
6
 00:02.98
3. oli g
23
 00:03.03
3. thelegendary08
34
 00:03.03
5. ClementLauw
6
 00:03.54
6. Whoname 00:03.59
7. dave dave
8
 00:03.75
7. Kukko
170
 00:03.75
9. CamPuzzle
5
 00:03.76
10. ivbagbroke 00:03.80
11. Waterkip123 00:03.90
12. alazyslump
13
 00:04.03
13. Chen Jiakai
9
 00:04.06
14. htjones34
41
 00:04.13
15. Green.wolf._
10
 00:04.44
16. mikasigma 00:04.47
17. FxdeSlxyr
5
 00:04.56
18. StarAcrs
6
 00:04.70
19. iwhimper 00:04.87
20. ilokoi 00:04.96
Today
1. fyro1 00:02.63
2. DuStinkst
6
 00:02.98
3. oli g
23
 00:03.03
4. Kukko
170
 00:03.75
5. CamPuzzle
5
 00:04.06
6. htjones34
41
 00:05.03
7. holdmyfarts 00:05.10
8. Dorice
266
 00:05.13
9. EvanGai 00:05.73
10. hq4hq
136
 00:06.24
11. Frixio
4
 00:06.27
12. CatAstra 00:06.67
13. dynesonne 00:06.93
14. antistrix
3
 00:07.02
15. SophieL
1
 00:07.04
16. GeorgPfleger
96
 00:07.38
17. h7027 00:10.95
18. MYLOVE
3
 00:12.59
19. RyanC
6
 00:13.26
20. PikaFett8 00:13.77
MO3
1. zahhydude1
211
 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
259
 00:02.54
8. numbrr
313
 00:02.70
9.anonymous
11
 00:02.73
10. JZE
87
 00:02.79
AO5
1. zahhydude1
211
 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
313
 00:02.61
8. jaybrainer
259
 00:02.88
9.anonymous
11
 00:02.89
10. JZE
87
 00:03.01
AO12
1. zahhydude1
211
 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
259
 00:03.00
9. numbrr
313
 00:03.21
10. Vicell
9
 00:03.30
Robots / programmatic solversinfo  
1.tlstyer
143
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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