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
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Today
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MO3
1. vowels
214
03:03.86
2. suuperch
120
03:49.69
3. coolcoolguy65
150
04:10.97
4. qqwref
259
04:17.05
5. Icay
187
04:24.76
6. hoodxxc
221
04:31.46
7. XuanLan
131
04:34.75
8. Yuyinraoliang
58
04:38.93
9. haramey
228
04:46.19
10. Namae
62
04:46.94
AO5
1. vowels
214
03:07.40
2. suuperch
120
03:50.63
3. coolcoolguy65
150
04:10.97
4. qqwref
259
04:22.97
5. Icay
187
04:33.83
6. hoodxxc
221
04:36.86
7. XuanLan
131
04:45.98
8. Namae
62
04:52.35
9. FAlin
188
05:00.38
10. kdu
180
05:02.91
AO12
1. vowels
214
03:17.23
2. suuperch
120
04:03.60
3. qqwref
259
04:56.39
4. Icay
187
05:12.04
5. hoodxxc
221
05:20.21
6. Yuyinraoliang
58
05:26.73
7. kdu
180
05:28.72
8. Namae
62
05:34.78
9. XuanLan
131
05:36.45
10. haramey
228
05:41.22
Robots / programmatic solversinfo  
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* 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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2025-05-11 11:47:10

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