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. keehaag
159
 00:03.38
2. hayei 00:03.39
3. Green.wolf._
9
 00:03.46
4. vilodi
124
 00:03.48
5. kinbo71
15
 00:03.68
6. kroller
17
 00:03.75
7. Flexo
40
 00:04.13
8. Emberana
16
 00:04.19
9. IAmLoup
29
 00:04.41
10. thall
55
 00:04.60
11. pato3042 00:04.83
12. AlistairMacAllister
66
 00:04.85
13. toryx68 00:04.98
14. GeorgPfleger
94
 00:05.02
15. dynesonne 00:05.27
16. rob69
22
 00:05.30
17. empanadaslokas
8
 00:05.37
18. battlecruiser12 00:05.53
19. Educated-cat
44
 00:05.76
20. BeXuanMaiLonTon 00:05.90
This Week
1. keehaag
159
 00:03.38
2. kinbo71
15
 00:03.68
3. kroller
17
 00:03.75
4. Green.wolf._
9
 00:03.79
5. vilodi
124
 00:04.25
6. thall
55
 00:04.60
7. toryx68 00:04.98
8. GeorgPfleger
94
 00:05.18
9. rob69
22
 00:05.90
9. BeXuanMaiLonTon 00:05.90
11. qobi
233
 00:05.98
12. Dorice
259
 00:06.42
13. HDXX123456789 00:06.69
14. Emzed
44
 00:07.17
15. HackMan
120
 00:07.83
16. Savia
72
 00:07.84
17. Tobias Matthews
2
 00:07.95
18. jordan12 00:09.78
19. Determined1 00:14.11
20. CLAVDIVS
70
 00:16.41
Today
1.--- empty -----:--
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
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
210
 00:01.45
2. vowels
216
 00:01.80
3. CYrZx123
54
 00:01.95
4. nabi
92
 00:02.07
5. demian2
61
 00:02.29
5. BingBongBob
108
 00:02.29
7. jaybrainer
247
 00:02.54
8. numbrr
305
 00:02.72
9.anonymous
11
 00:02.73
10. JZE
87
 00:02.79
AO5
1. zahhydude1
210
 00:01.56
2. vowels
216
 00:01.94
3. CYrZx123
54
 00:02.05
4. nabi
92
 00:02.21
5. BingBongBob
108
 00:02.40
6. demian2
61
 00:02.44
7. numbrr
305
 00:02.83
8. jaybrainer
247
 00:02.88
9.anonymous
11
 00:02.89
10. JZE
87
 00:03.01
AO12
1. zahhydude1
210
 00:01.74
2. vowels
216
 00:02.02
3. CYrZx123
54
 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
247
 00:03.00
9. numbrr
305
 00:03.22
10. Vicell
9
 00:03.30
Robots / programmatic solversinfo  
1.tlstyer
137
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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2026-01-19 04:16:25

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