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
1. wangzimoxx
15
00:59.91
2. TomGuo
143
01:00.75
3. mmyama
75
01:08.66
4. Kimseunghyeon 01:10.91
5. verberos
76
01:34.37
6. syucream
94
01:34.44
7. Kukko
106
01:45.84
8. qobi
221
02:04.19
9. izrabelle
32
02:08.84
10. HackMan
98
02:14.22
11. Polaris.
8
02:28.95
12. afidaleo
115
02:31.90
13. ScoutDad 02:38.58
14. Iron Crispy
28
02:42.61
15. grimmgirlfandom
146
02:48.69
16. Praktisix
85
03:05.76
17. RobitussinFlow
20
03:12.61
18. Lady
53
03:13.07
19. maurysiek
34
03:34.13
20. AnonyMinor
48
03:56.43
This Week
1. TomGuo
143
01:02.73
2. Kimseunghyeon 01:14.59
3. HackMan
98
02:14.22
4. afidaleo
115
02:31.90
5. Iron Crispy
28
02:42.61
6. RobitussinFlow
20
03:12.61
7. Praktisix
85
03:18.10
8. BIGDlittled 05:57.78
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Today
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MO3
1. numbrr
289
00:46.10
2. TashiroMiraki
214
00:47.55
3. gtkrouwel
114
00:53.61
4. sfumato
166
01:01.21
5. qqwref
259
01:05.62
6. Yeti
110
01:06.28
7. Nick
217
01:07.31
8. mtanzer
140
01:10.95
9. summernight
204
01:12.70
10. mmyama
75
01:13.09
AO5
1. numbrr
289
00:46.10
2. TashiroMiraki
214
00:51.06
3. gtkrouwel
114
00:57.28
4. Yeti
110
01:07.43
5. sfumato
166
01:08.37
6. mtanzer
140
01:11.61
7. qqwref
259
01:13.56
8. summernight
204
01:14.94
9. Oryn
148
01:16.78
10. 2015YINJ02
148
01:20.51
AO12
1. numbrr
289
00:55.85
2. TashiroMiraki
214
00:56.88
3. gtkrouwel
114
01:05.34
4. summernight
204
01:19.65
5. qqwref
259
01:23.77
6. Oryn
148
01:24.66
7. mtanzer
140
01:25.21
8. Yeti
110
01:31.17
9. sfumato
166
01:32.17
10. z9z9z9z9z9
79
01:39.06
Robots / programmatic solversinfo  
1.tlstyer
109
00:00.011
2.hum@b0t
91
00:00.163
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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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2025-05-02 04:13:05

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