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
211
02:50.13
2.anonymous
122
03:06.96
3.anonymous
194
03:13.87
4. TashiroMiraki
214
03:18.84
5. numbrr
290
03:46.72
6. qqwref
259
03:48.50
7. dxjonas
122
03:59.80
8. gtkrouwel
114
04:05.07
9. Dust14
79
04:09.34
10. Sonar
77
04:10.24
AO5
1.anonymous
124
01:18.98
2.anonymous
211
02:54.48
3. TashiroMiraki
214
03:26.64
4. qqwref
259
03:58.78
5. gtkrouwel
114
04:05.07
6.anonymous
194
04:06.31
7. Sonar
77
04:15.07
8. dxjonas
122
04:20.17
9. Dust14
79
04:22.86
10.anonymous
122
04:33.94
AO12
1. TashiroMiraki
214
03:48.31
2. qqwref
259
04:21.80
3. gtkrouwel
114
04:31.50
4. dxjonas
122
04:45.98
5. Dust14
79
05:03.34
6. Douglas Shamlin Jr.
686
05:03.54
7. summernight
205
05:07.28
8. moonjady
340
05:23.36
9. highprime
108
05:29.16
10. crascodyllea
134
05:35.37
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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2025-05-09 11:07:58

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