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. Jorgito Salles
48
00:03.31
2. LemonSherbet 00:03.45
3. niqnna
18
00:04.34
4. stevethesquid
69
00:04.39
5. Piroska9
68
00:05.00
6. penguain
57
00:05.85
7. Nyauchoo
9
00:06.71
8. XiaoXin1113
34
00:07.09
9. thall
50
00:07.24
10. arod97
28
00:07.67
11. Skallos
37
00:07.80
12. HackMan
117
00:08.03
13. qobi
232
00:08.43
14. 谜题杀手
45
00:08.79
15. AuroraSrc
18
00:09.38
16. ohayou 00:10.48
17. PezFeli 00:10.87
18. gorilla801 00:11.56
19. EG0hun 00:12.31
20. trLBumm
22
00:12.49
This Week
1. LemonSherbet 00:03.45
2. stevethesquid
69
00:04.39
3. niqnna
18
00:05.15
4. Piroska9
68
00:05.62
5. thall
50
00:07.24
6. arod97
28
00:07.67
7. AuroraSrc
18
00:09.96
8. ohayou 00:10.48
9. trLBumm
22
00:12.49
10. EG0hun 00:21.15
11. TheXDreamer 00:22.31
12. Koakuma
50
00:25.81
13.--- empty -----:--
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20.--- empty -----:--
Today
1. LemonSherbet 00:04.16
2. Koakuma
50
00:25.81
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
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20.--- empty -----:--
MO3
1. numbrr
301
00:02.49
2. jaybrainer
244
00:02.68
3. vowels
216
00:02.71
4. Arok
115
00:02.86
5. Yeti
127
00:03.03
6. mtanzer
140
00:03.06
6. Douglas Shamlin Jr.
715
00:03.06
8. gtkrouwel
129
00:03.18
9. nabi
92
00:03.21
10. TashiroMiraki
217
00:03.43
AO5
1. numbrr
301
00:02.73
2. jaybrainer
244
00:02.75
3. vowels
216
00:03.02
4. Douglas Shamlin Jr.
715
00:03.09
5. Yeti
127
00:03.22
6. Arok
115
00:03.23
7. mtanzer
140
00:03.25
7. nabi
92
00:03.25
9. TashiroMiraki
217
00:03.59
10. gtkrouwel
129
00:03.68
AO12
1. numbrr
301
00:03.28
2. jaybrainer
244
00:03.30
3. vowels
216
00:03.83
4. Yeti
127
00:03.87
5. mtanzer
140
00:03.89
6. Arok
115
00:04.12
7. gtkrouwel
129
00:04.27
8. Douglas Shamlin Jr.
715
00:04.52
9. sfumato
166
00:04.54
10. Oryn
162
00:04.57
Robots / programmatic solversinfo  
1.tlstyer
136
00:00.007
2.cheyette00:00.108
3.hum@b0t
91
00:00.158

* 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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2025-11-28 07:08:42

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