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

This Month
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This Week
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Today
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MO3
1.anonymous
91
00:05.96
2.anonymous
161
00:23.77
3.anonymous
216
00:34.84
4. Funkcja
147
00:58.23
5.anonymous
140
01:15.84
6. TashiroMiraki
217
01:28.33
7. gtkrouwel
132
01:29.38
8. dxjonas
144
01:36.43
9.anonymous
138
01:40.33
10. summernight
227
01:52.02
AO5
1.anonymous
161
00:34.32
2.anonymous
216
00:36.80
3. Funkcja
147
00:47.13
4. TashiroMiraki
217
01:31.92
5. gtkrouwel
132
01:33.77
6.anonymous
140
01:34.13
7. dxjonas
144
01:36.43
8. rozer
207
02:03.46
9. Dust14
89
02:03.90
10. Sonar
80
02:04.40
AO12
1.anonymous
161
01:15.58
2. TashiroMiraki
217
01:45.08
3. gtkrouwel
132
01:45.85
4. dxjonas
144
02:08.27
5. moonjady
351
02:18.60
6. rozer
207
02:22.08
7. Dust14
89
02:24.79
8. summernight
227
02:25.69
9. Oryn
166
02:28.38
10. Thomas Garner
171
02:34.97
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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2026-02-01 15:45:54

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