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
148
00:54.68
2.anonymous
198
00:56.05
3.anonymous
214
01:19.11
4.anonymous
132
03:06.96
5. TashiroMiraki
217
03:18.84
6.anonymous
135
03:23.26
7. numbrr
301
03:46.72
8. qqwref
260
03:48.50
9. moonjady
348
03:49.71
10. gtkrouwel
128
03:50.37
AO5
1.anonymous
148
01:07.12
2.anonymous
214
01:22.87
3.anonymous
198
01:56.81
4.anonymous
132
03:06.96
5. TashiroMiraki
217
03:26.64
6. dxjonas
135
03:57.92
7. qqwref
260
03:58.78
8. gtkrouwel
128
04:03.72
9. Sonar
77
04:15.07
10. Dust14
85
04:22.86
AO12
1. TashiroMiraki
217
03:48.31
2. qqwref
260
04:21.80
3. dxjonas
135
04:28.68
4. gtkrouwel
128
04:31.50
5. Douglas Shamlin Jr.
713
04:53.68
6. Dust14
85
05:03.34
7. summernight
221
05:07.28
8. highprime
121
05:22.59
9. moonjady
348
05:23.36
10. crascodyllea
144
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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2025-10-21 01:52:59

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