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.mmyama00:19.94
2.tufelix36700:20.55
3.Fastfaxer
32
00:21.28
4.niqnna
18
00:21.47
5.Bees1
17
00:22.90
6.hvl89300:24.47
7.HackMan00:24.74
8.bearn
48
00:26.79
9.Aeliar
12
00:29.79
10.Ramasp
67
00:29.96
11.Goochelaar
32
00:30.36
12.daniel12300:30.53
13.Jonathan Ferro
27
00:30.73
14.cocadota
25
00:32.06
15.EF12300:33.48
16.Corallystarfish
42
00:36.00
17.Denitova
34
00:36.96
18.nickyeatman00:37.74
19.hoshwa00:38.12
20.penguain
20
00:38.78
This Week
1.tufelix36700:21.43
2.niqnna
18
00:21.47
3.HackMan00:24.74
4.daniel12300:30.53
5.mmyama00:30.64
6.EF12300:33.48
7.Denitova
34
00:36.96
8.nickyeatman00:37.74
9.Goochelaar
32
00:38.34
10.procrastinator3000
14
00:43.51
11.sunnyshi
4
00:53.67
12.sxbjxjy00:56.35
13.Jonathan Ferro
27
01:03.99
14.Dugong01:07.43
15.tetraxile
5
01:14.05
16.jokern803:14.60
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Today
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Robots / programmatic solversinfo  
1.penguain
20
00:02.29
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