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.

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Shikaku


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

This Month
1. Vicellen
15
 00:02.62
2. Green.wolf._
9
 00:03.61
3. kroller
18
 00:03.65
4. Calvin Anderson
5
 00:03.78
5. lxy082 00:03.80
6. 131a562
14
 00:03.85
7. ducky3 00:04.13
8. trLBumm
30
 00:04.30
9. MushroomsCavern
52
 00:04.43
10. rhyde27
10
 00:04.46
11. Sokovik
23
 00:04.47
12. qobi
234
 00:04.51
13. Dorice
262
 00:04.60
14. TaylorCline
2
 00:04.76
15. pickeli
6
 00:04.77
16. Emzed
60
 00:04.95
17. Itseemslikeme 00:05.07
18. GeorgPfleger
95
 00:05.40
19. cheesekurtz 00:05.42
20. kaede1111
6
 00:05.47
This Week
1. Vicellen
15
 00:02.62
2. Calvin Anderson
5
 00:03.78
3. ducky3 00:04.13
4. MushroomsCavern
52
 00:04.43
5. rhyde27
10
 00:04.46
6. qobi
234
 00:04.51
7. TaylorCline
2
 00:04.76
8. Green.wolf._
9
 00:04.81
9. Itseemslikeme 00:05.07
10. GeorgPfleger
95
 00:05.42
11. Gelko Nako
3
 00:05.47
12. SnoopHoggFan
3
 00:05.63
13. ZiHan 00:05.75
14. thelegendary08
27
 00:05.82
15. wei meari
29
 00:05.85
16. Rahul Chandranath
2
 00:05.87
17. QuellSpeller
94
 00:06.07
18. toryx68 00:06.30
19. Dorice
262
 00:06.97
20. JTG
65
 00:07.26
Today
1. EliMiland 00:07.84
2. Lucycc 00:07.96
3. KGabee 00:08.39
4. Pel
5
 00:11.69
5. tko720 00:11.97
6. Alex Nae
1
 00:12.57
7. FreddyHairy 00:16.29
8. sparkly 00:25.64
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
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
251
 00:02.54
8. numbrr
307
 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
307
 00:02.61
8. jaybrainer
251
 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
251
 00:03.00
9. numbrr
307
 00:03.21
10. Vicell
9
 00:03.30
Robots / programmatic solversinfo  
1.tlstyer
141
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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2026-02-18 11:01:57

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