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. Yuyinraoliang_1
16
00:02.55
2. D A
6
00:03.32
3. Eduard 00:03.63
4. SirDiscalot
26
00:03.72
5. Yeti
113
00:03.78
6. hyul0217 00:03.83
7. Jen Jay
17
00:03.90
8. GeorgPfleger
87
00:04.11
9. 2115 michał
10
00:04.24
10. HDXX123456789 00:04.42
11. venipede 00:04.45
12. johannn 00:04.55
13. cugntear
25
00:04.64
14. prinsed
28
00:04.71
15. grimmgirlfandom
148
00:04.80
16. Dorice
239
00:04.90
17. mochuan123 00:05.09
18. dynesonne 00:05.11
19. doodlepoodle100
44
00:05.12
20. ScorpionMax 00:05.13
This Week
1. Yuyinraoliang_1
16
00:02.55
2. hyul0217 00:03.83
3. Jen Jay
17
00:03.90
4. SirDiscalot
26
00:04.70
5. prinsed
28
00:04.71
6. mochuan123 00:05.09
6. HDXX123456789 00:05.09
8. Mihyun 00:05.19
9. GeorgPfleger
87
00:05.33
10. dynesonne 00:05.70
11. Chaarlie 00:05.73
12. kamikazi
12
00:06.45
13. Dorice
239
00:06.48
14. revisewithleo 00:07.20
15. toryx68 00:07.37
16. batuhanarda 00:07.57
17. august2010980 00:08.24
18. gentleben 00:08.66
19. frzznyh 00:09.67
20. HackMan
100
00:10.14
Today
1. hyul0217 00:03.83
2. Jen Jay
17
00:04.19
3. Mihyun 00:05.19
4. Chaarlie 00:05.73
5. GeorgPfleger
87
00:06.20
6. dynesonne 00:06.63
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
184
00:01.48
2. vowels
214
00:01.80
3. CYrZx123
46
00:02.04
4. nabi
92
00:02.07
5. demian2
61
00:02.29
5. BingBongBob
107
00:02.29
7. jaybrainer
228
00:02.72
7. numbrr
291
00:02.72
9.anonymous
11
00:02.73
10. JZE
61
00:02.79
AO5
1. zahhydude1
184
00:01.59
2. vowels
214
00:01.94
3. CYrZx123
46
00:02.16
4. nabi
92
00:02.21
5. BingBongBob
107
00:02.40
6. demian2
61
00:02.44
7. numbrr
291
00:02.83
8. jaybrainer
228
00:02.88
9.anonymous
11
00:02.89
10. JZE
61
00:03.01
AO12
1. zahhydude1
184
00:01.78
2. vowels
214
00:02.02
3. nabi
92
00:02.41
4. CYrZx123
46
00:02.55
5. demian2
61
00:02.86
6. BingBongBob
107
00:02.88
7.anonymous
11
00:02.94
8. numbrr
291
00:03.22
8. jaybrainer
228
00:03.22
10. Vicell
9
00:03.30
Robots / programmatic solversinfo  
1.tlstyer
112
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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2025-05-16 16:59:28

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