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. coolcoolguy65
159
 00:02.57
2. Fjznbeinfnn 00:02.99
3. Sloiw 00:03.05
4. Yuyinraoliang
60
 00:03.17
5. qobi
232
 00:03.47
6. COlDAiR
70
 00:03.77
7. ahpha001 00:03.81
8. 신동근
15
 00:03.93
9. sway85
23
 00:04.00
10. Dchair
8
 00:04.27
11. fishbonesoup
9
 00:04.46
12. Nemo Waters 00:04.74
13. jj3742 00:04.81
14. Maria Maria
7
 00:04.84
15. GeorgPfleger
93
 00:04.87
16. dynesonne 00:04.92
17. si1verwind 00:05.04
18. azurevoid
8
 00:05.06
19. venipede 00:05.11
20. imboreed
6
 00:05.12
This Week
1. Fjznbeinfnn 00:02.99
2. ahpha001 00:03.81
3. sway85
23
 00:04.51
4. fishbonesoup
9
 00:06.01
5. GeorgPfleger
93
 00:06.02
6. alphakori
14
 00:06.13
7. venipede 00:06.65
8. Cricketwithagun
21
 00:06.77
9. banach
39
 00:06.78
10. pato3042 00:06.95
11. PezFeli 00:07.10
12. qobi
232
 00:07.48
13. gentleben 00:08.99
14. Savia
68
 00:10.03
15. Rod Ellison
34
 00:10.86
16. Ingrid59
45
 00:11.72
17. HackMan
117
 00:13.36
18. Flower Boy
26
 00:16.91
19. CLAVDIVS
66
 00:18.21
20. Ariane Sorensen Albi...
3
 00:19.43
Today
1. GeorgPfleger
93
 00:07.84
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
208
 00:01.45
2. vowels
216
 00:01.80
3. CYrZx123
51
 00:01.96
4. nabi
92
 00:02.07
5. demian2
61
 00:02.29
5. BingBongBob
108
 00:02.29
7. jaybrainer
243
 00:02.54
8. numbrr
301
 00:02.72
9.anonymous
11
 00:02.73
10. JZE
87
 00:02.79
AO5
1. zahhydude1
208
 00:01.56
2. vowels
216
 00:01.94
3. CYrZx123
51
 00:02.11
4. nabi
92
 00:02.21
5. BingBongBob
108
 00:02.40
6. demian2
61
 00:02.44
7. numbrr
301
 00:02.83
8. jaybrainer
243
 00:02.88
9.anonymous
11
 00:02.89
10. JZE
87
 00:03.01
AO12
1. zahhydude1
208
 00:01.74
2. vowels
216
 00:02.02
3. nabi
92
 00:02.41
4. CYrZx123
51
 00:02.52
5. demian2
61
 00:02.86
6. BingBongBob
108
 00:02.88
7.anonymous
11
 00:02.94
8. jaybrainer
243
 00:03.00
9. numbrr
301
 00:03.22
10. Vicell
9
 00:03.30
Robots / programmatic solversinfo  
1.tlstyer
135
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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2025-11-17 07:51:24

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