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.sfumato
97
00:46.62
2.demian2
40
00:46.88
3.vowels
63
00:46.91
4.arcer
64
00:47.11
5.qobi
91
00:51.03
6.GeorgPfleger
60
01:02.92
7.James Staddon
14
01:17.38
8.alize01:28.32
9.sriragt
15
01:44.17
10.cstockard01:56.91
11.Ludaye
72
02:02.65
12.aequidens
80
02:10.68
13.GoatMan02:11.79
14.Albert Micah Lyu
50
02:20.00
15.mjkjxp02:32.89
16.h0njek02:41.62
17.Another03:27.05
18.Ucalino03:53.28
19.MathDJ04:01.93
20.Hashibrown04:15.90
This Week
1.sfumato
97
00:46.62
2.qobi
91
00:59.07
3.GeorgPfleger
60
01:09.04
4.James Staddon
14
01:17.38
5.cstockard01:56.91
6.GoatMan02:11.79
7.mjkjxp02:32.89
8.Hashibrown04:15.90
9.Another05:11.21
10.ZaydZX07:23.74
11.grammiej10:10.53
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1.GeorgPfleger
60
01:09.04
2.mjkjxp02:32.89
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.demian2
40
00:35.74
2.qobi
91
00:51.01
3.arcer
64
00:52.65
4.vowels
63
00:53.49
5.sfumato
97
01:00.40
6.RodrigoBrazil
48
01:04.41
7.GeorgPfleger
60
01:10.00
8.NinjaFury68
76
01:12.23
9.PHCC2021
29
01:18.29
10.Salnom
12
01:18.66
AO5
1.demian2
40
00:37.73
2.qobi
91
00:51.01
3.arcer
64
00:53.35
4.vowels
63
00:57.91
5.sfumato
97
01:01.39
6.GeorgPfleger
60
01:06.26
7.RodrigoBrazil
48
01:13.28
8.NinjaFury68
76
01:15.71
9.Kunabanana
45
01:22.55
10.PHCC2021
29
01:29.00
AO12
1.qobi
91
01:02.60
2.arcer
64
01:03.09
3.vowels
63
01:22.57
4.RodrigoBrazil
48
01:31.73
5.NinjaFury68
76
01:35.57
6.Kunabanana
45
01:43.44
7.Salnom
12
02:06.43
8.Kutner17
46
02:19.48
9.Fastfaxer
79
02:35.86
10.finspac
45
02:46.03
Robots / programmatic solversinfo  
1.tlstyer
1314
00:00.009
2.Charlie Li
60
00:00.957
3.--- empty -----:--

* 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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2021-10-18 14:44:11

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