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
145
00:21.93
2. Yuyinraoliang_1
14
00:25.82
3. ypw19
63
00:32.00
4. AgValen
22
00:44.75
5. Lanmo
38
00:46.26
6. giotskh
147
00:52.84
7. qobi
214
00:55.10
8. GeorgPfleger
83
00:58.67
9. AliceKnowledge
6
01:07.47
10. 风间呓语
72
01:11.95
11. bw927
23
01:14.51
12. Dorice
231
01:18.23
13. doodlepoodle100
29
01:28.64
14. Phillillillip 01:36.28
15. siaalove
87
01:45.01
16. HollyBerry
61
01:49.87
17. yosiaki
77
01:55.98
18. SirDiscalot
25
01:56.94
19. EnderPrinceV 02:48.14
20. angelina4fina 03:05.90
This Week
1. coolcoolguy65
145
00:21.93
2. AgValen
22
00:44.75
3. GeorgPfleger
83
01:06.59
4. qobi
214
01:25.95
5. HollyBerry
61
01:49.87
6. yosiaki
77
01:55.98
7. siaalove
87
01:58.69
8. Phillillillip 02:03.54
9. Dorice
231
02:05.72
10. angelina4fina 03:05.90
11. Hundano 03:24.53
12. XLPop 03:35.25
13. Hanoriola
2
05:23.68
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. AgValen
22
00:44.75
2. yosiaki
77
01:55.98
3. siaalove
87
01:58.69
4. Phillillillip 02:26.79
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. coolcoolguy65
145
00:28.08
2. vowels
214
00:31.91
3. bearn
206
00:35.40
4. zahhydude1
174
00:35.59
5. demian2
61
00:35.74
6. numbrr
277
00:35.88
7. sfumato
165
00:42.83
8. Icay
184
00:42.93
9. mtanzer
140
00:42.94
10. qqwref
259
00:44.89
AO5
1. coolcoolguy65
145
00:30.96
2. vowels
214
00:31.91
3. demian2
61
00:37.73
4. zahhydude1
174
00:37.79
5. numbrr
277
00:38.80
6. bearn
206
00:38.87
7. Icay
184
00:43.17
8. sfumato
165
00:46.40
9. qqwref
259
00:47.95
10. mtanzer
140
00:48.68
AO12
1. vowels
214
00:39.61
1. coolcoolguy65
145
00:39.61
3. zahhydude1
174
00:43.79
4. bearn
206
00:44.46
5. numbrr
277
00:48.35
6. Icay
184
00:49.29
7. mtanzer
140
00:54.07
8. qqwref
259
00:56.08
9. hoodxxc
219
00:56.20
10. ypw19
63
00:56.85
Robots / programmatic solversinfo  
1.tlstyer
102
00:00.007
2.Charlie Li
61
00:00.222
3.kohayul04:20.986

* 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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2025-02-06 20:05:30

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