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

New Puzzle
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Today
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MO3
1.anonymous
91
00:05.96
2.anonymous
172
00:23.77
3. Funkcja
150
00:30.18
4.anonymous
218
00:34.84
5. grae
91
01:08.01
6.anonymous
146
01:15.84
7. TashiroMiraki
226
01:28.33
8. gtkrouwel
135
01:29.38
9. Nelaryia
33
01:30.93
10. dxjonas
154
01:36.43
AO5
1.anonymous
172
00:34.32
2. Funkcja
150
00:36.79
3.anonymous
218
00:36.80
4. TashiroMiraki
226
01:31.92
5. gtkrouwel
135
01:33.77
6.anonymous
146
01:34.13
7. dxjonas
154
01:36.43
8. rozer
209
02:03.46
9. Dust14
93
02:03.90
10. Sonar
83
02:04.40
AO12
1.anonymous
172
01:15.58
2. TashiroMiraki
226
01:45.08
3. gtkrouwel
135
01:45.85
4. Funkcja
150
01:46.95
5. dxjonas
154
01:59.66
6. moonjady
354
02:18.60
7. rozer
209
02:22.08
8. Dust14
93
02:22.69
9. summernight
233
02:25.69
10. Oryn
175
02:28.38
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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