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
142
00:54.68
2.anonymous
198
00:56.05
3.anonymous
214
01:19.11
4.anonymous
131
03:06.96
5. TashiroMiraki
216
03:18.84
6.anonymous
133
03:23.26
7. numbrr
300
03:46.72
8. qqwref
260
03:48.50
9. moonjady
347
03:49.71
10. gtkrouwel
122
03:50.37
AO5
1.anonymous
142
01:07.12
2.anonymous
214
01:22.87
3.anonymous
198
01:56.81
4.anonymous
131
03:06.96
5. TashiroMiraki
216
03:26.64
6. dxjonas
133
03:57.92
7. qqwref
260
03:58.78
8. gtkrouwel
122
04:05.07
9. Sonar
77
04:15.07
10. Dust14
83
04:22.86
AO12
1. TashiroMiraki
216
03:48.31
2. qqwref
260
04:21.80
3. gtkrouwel
122
04:31.50
4. dxjonas
133
04:45.98
5. Dust14
83
05:03.34
6. Douglas Shamlin Jr.
709
05:03.54
7. summernight
215
05:07.28
8. highprime
117
05:22.59
9. moonjady
347
05:23.36
10. crascodyllea
143
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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2025-09-16 06:20:25

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