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. Eskimosnake
104
00:29.91
2. qobi
219
00:30.27
3. GeorgPfleger
85
00:31.89
4. Kyra05
73
00:37.65
5. lew
19
00:39.13
6. syucream
88
00:40.60
7. Dorice
236
00:40.96
8. monkeyman88
17
00:41.29
9. HDXX123456789 00:51.65
10. siaalove
91
00:52.09
11. angelina4fina 00:52.44
12. egosi
9
00:54.80
13. zhanglin1982
53
00:59.13
14. Rorschach
8
01:11.39
15. imbored 01:12.63
16. 预防老年痴呆
5
01:17.09
17. Terriama
56
01:20.95
18. DR-80
18
01:29.95
19. choi123 01:30.56
20. peclo 01:35.50
This Week
1. GeorgPfleger
85
00:36.51
2. syucream
88
00:40.60
3. HDXX123456789 00:51.65
4. egosi
9
00:54.80
5. Dorice
236
00:57.63
6. siaalove
91
01:02.97
7. Rorschach
8
01:11.39
8. 预防老年痴呆
5
01:17.09
9. jdubs
132
01:43.61
10. 廖得然
5
01:50.53
11. zardmyers
9
01:53.51
12. 黄燐
3
04:11.70
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. GeorgPfleger
85
00:36.51
2. Dorice
236
05:58.00
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
179
00:17.66
2. vowels
214
00:17.91
3. demian2
61
00:19.43
4. coolcoolguy65
149
00:19.84
5. bearn
206
00:20.58
6. Luke Pickett
59
00:22.75
7. numbrr
285
00:24.41
8. Icay
186
00:25.90
9. DukeAmsterdam
66
00:27.03
10. JZE
59
00:27.11
AO5
1. vowels
214
00:18.50
2. zahhydude1
179
00:19.23
3. demian2
61
00:21.11
4. coolcoolguy65
149
00:21.75
5. bearn
206
00:22.87
6. Luke Pickett
59
00:24.18
7. numbrr
285
00:25.40
8. qqwref
259
00:26.32
9. Valkyrie_
15
00:28.59
10. JZE
59
00:29.03
AO12
1. vowels
214
00:22.07
2. zahhydude1
179
00:24.21
3. coolcoolguy65
149
00:25.09
4. bearn
206
00:26.73
5. numbrr
285
00:29.02
6. Luke Pickett
59
00:30.90
7. Icay
186
00:31.14
8. JZE
59
00:31.23
9. qqwref
259
00:32.21
10. sfumato
165
00:33.58
Robots / programmatic solversinfo  
1.tlstyer
106
00:00.007
2.Charlie Li
61
00:00.213
3.Paul Bismuth
1
00:03.112

* 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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2025-03-28 16:40:31

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