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 00:03.35
2. Parade
8
00:04.50
3. kamikazi
22
00:05.03
4. PickleCat
31
00:05.69
5. Piroska9
62
00:05.83
6. TomGuo
145
00:07.67
7. llmt9
79
00:09.68
8. May John
59
00:11.48
9. DdBbon 00:11.51
10. qobi
225
00:13.67
11. leonleonidis
48
00:15.07
12. JUJUGAMES
11
00:15.12
13. Dorice
241
00:16.16
14. lukingood
3
00:23.27
15. shangdou
21
00:23.67
16. FunAcroFly
62
00:23.93
17. HackMan
104
00:25.54
18. wawa
39
00:28.19
19. koipond
17
00:31.67
20. KETJAK
28
00:35.40
This Week
1. Kimseunghyeon 00:04.35
2. Parade
8
00:04.50
3. PickleCat
31
00:05.69
4. llmt9
79
00:09.68
5. May John
59
00:11.48
6. DdBbon 00:11.51
7. Dorice
241
00:18.05
8. lukingood
3
00:23.27
9. shangdou
21
00:23.67
10. HackMan
104
00:25.54
11. ys56
55
00:37.42
12. RosemaryW 01:03.06
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Today
1. Kimseunghyeon 00:04.35
2. llmt9
79
00:16.66
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
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7.--- empty -----:--
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MO3
1. numbrr
295
00:02.83
2. vowels
215
00:03.01
3. mtanzer
140
00:03.39
4. TashiroMiraki
215
00:03.58
5. Klunk
24
00:04.23
6. Nick
217
00:04.31
7. Oryn
148
00:04.33
8. jaybrainer
234
00:04.56
9. limsh1201 4
50
00:04.57
10. Eskimosnake
104
00:04.74
AO5
1. vowels
215
00:03.35
2. numbrr
295
00:03.56
3. mtanzer
140
00:03.83
4. TashiroMiraki
215
00:04.25
5. Klunk
24
00:04.42
6. Oryn
148
00:04.65
7. Nick
217
00:04.74
8. sfumato
166
00:04.83
9. Eskimosnake
104
00:05.03
10. ded24lol
37
00:05.26
AO12
1. numbrr
295
00:04.19
2. vowels
215
00:04.71
3. mtanzer
140
00:05.02
4. Oryn
148
00:05.62
5. TashiroMiraki
215
00:05.86
6. Nick
217
00:05.93
7. sfumato
166
00:06.53
8. 飞飞
50
00:06.69
9. Eskimosnake
104
00:07.03
10. Yeti
116
00:07.91
Robots / programmatic solversinfo  
1.tlstyer
118
00:00.007
2.cheyette00:00.115
3.hum@b0t
91
00:00.159

* 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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2025-06-19 07:52:35

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