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. Kimseunghyeon 00:03.46
2. boru
101
00:04.08
3. SilverHawk
193
00:04.38
4. Osypi 00:04.93
5. Piroska9
56
00:05.77
6. TomGuo
139
00:06.35
7. COlDAiR
43
00:06.66
8. mmyama
65
00:07.01
9. grimmgirlfandom
132
00:07.25
10. mathking 00:07.43
11. takaz 00:08.26
12. oshi
23
00:08.52
13. stevethesquid
59
00:09.02
14. giotskh
144
00:09.62
15. crema
122
00:10.77
16. EmrHoca
19
00:13.33
17. Alvina TongTong
43
00:14.78
18. zhaooh 00:15.03
19. Dorice
229
00:15.17
20. Krecik
30
00:17.28
This Week
1. Kimseunghyeon 00:03.55
2. COlDAiR
43
00:06.66
3. giotskh
144
00:09.62
4. zhaooh 00:15.03
5. Dorice
229
00:15.17
6. FunAcroFly
19
00:22.66
7. 박수현
3
00:30.76
8. Royyyyyyy 00:46.16
9. Fabiogaudo
7
01:18.90
10. Koakuma
45
01:44.77
11. chrispy
60
07:11.59
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Today
1. COlDAiR
43
00:06.66
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MO3
1. numbrr
274
00:02.83
2. vowels
214
00:03.01
3. mtanzer
140
00:03.39
4. TashiroMiraki
212
00:03.58
5. Klunk
24
00:04.23
6. Nick
217
00:04.31
7. Oryn
148
00:04.33
8. jaybrainer
212
00:04.56
9. limsh1201 4
50
00:04.57
10. Eskimosnake
100
00:04.74
AO5
1. vowels
214
00:03.35
2. numbrr
274
00:03.56
3. mtanzer
140
00:03.83
4. TashiroMiraki
212
00:04.25
5. Klunk
24
00:04.42
6. Oryn
148
00:04.65
7. Nick
217
00:04.74
8. sfumato
164
00:04.83
9. Eskimosnake
100
00:05.03
10. ded24lol
37
00:05.26
AO12
1. numbrr
274
00:04.39
2. vowels
214
00:04.71
3. mtanzer
140
00:05.02
4. Oryn
148
00:05.62
5. TashiroMiraki
212
00:05.86
6. Nick
217
00:05.93
7. sfumato
164
00:06.53
8. 飞飞
44
00:06.69
9. Eskimosnake
100
00:07.03
10. Yeti
88
00:07.91
Robots / programmatic solversinfo  
1.tlstyer
100
00:00.007
2.sadinrain00:53.186
3.1256chris02:25.923

* 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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2025-01-15 02:55:16

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