Light Up


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Light Up (Akari) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. Light Up is played on a rectangular grid. The grid has both black cells and white cells in it. The objective is to place light bulbs on the grid so that every white square is lit. A cell is illuminated by a light bulb if they're in the same row or column, and if there are no black cells between them. Also, no light bulb may illuminate another light bulb.
Some of the black cells have numbers in them. A number in a black cell indicates how many light bulbs share an edge with that cell.
Left click a square to place a light bulb. Right click to mark with X.

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Light Up


7x7 Light Up Easy | 7x7 Light Up Normal | 7x7 Light Up Hard | 10x10 Light Up Easy | 10x10 Light Up Normal | 10x10 Light Up Hard | 14x14 Light Up Easy | 14x14 Light Up Normal | 14x14 Light Up Hard | 25x25 Light Up Easy | 25x25 Light Up Normal | 25x25 Light Up Hard

This Month
1.million
46
00:14.89
2.sfumato
90
00:17.14
3.mmyama00:17.71
4.tufelix36700:23.15
5.Oryn
37
00:23.96
6.NickC
64
00:24.28
7.Aniki00:28.25
8.Bhaygin00:28.38
9.TomGuo
46
00:28.58
10.Ravenclaw00:33.81
11.jmk77000:36.13
12.
93
00:36.28
13.HackMan00:38.94
14.Wuni1400:39.63
15.qobi
87
00:40.36
16.ambiorix00:40.56
17.Fastfaxer
75
00:40.92
18.kimbo1971
39
00:43.39
19.zsy031400:44.82
20.rootbeer
12
00:47.70
This Week
1.tufelix36700:23.15
2.NickC
64
00:24.28
3.TomGuo
46
00:31.96
4.jmk77000:36.13
5.
93
00:36.28
6.qobi
87
00:45.75
7.ambiorix00:46.55
8.Jack63kids
30
00:52.11
9.Wuni1400:53.47
10.TimS
41
01:10.37
11.nin411
28
01:56.28
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Today
1.tufelix36700:23.15
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11.--- empty -----:--
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MO3
1.mtanzer
87
00:18.59
2.million
46
00:22.45
3.Ramasp
101
00:25.56
4.sfumato
90
00:26.40
5.NickC
64
00:30.46
6.AnthonyL
39
00:30.99
7.Oryn
37
00:33.57
8.tlstyer
1314
00:35.14
9.TomGuo
46
00:35.40
10.Fastfaxer
75
00:37.31
AO5
1.mtanzer
87
00:20.53
2.million
46
00:26.55
3.sfumato
90
00:26.89
4.Ramasp
101
00:27.05
5.NickC
64
00:28.13
6.AnthonyL
39
00:30.83
7.Oryn
37
00:35.02
8.TomGuo
46
00:35.75
9.loki515
24
00:38.13
10.Fastfaxer
75
00:38.70
AO12
1.mtanzer
87
00:27.40
2.Ramasp
101
00:34.91
3.AnthonyL
39
00:37.45
4.Fastfaxer
75
00:41.15
5.NickC
64
00:41.94
6.kimbo1971
39
00:50.67
7.tlstyer
1314
00:52.79
8.Einsteinus
48
00:53.94
9.anonymous
93
01:06.10
10.anonymous
53
01:11.68
Robots / programmatic solversinfo  
1.tlstyer
1314
00:00.009
2.--- empty -----:--
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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2021-09-20 13:14:22

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