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. niqnna
18
00:04.28
2. LemonSherbet 00:04.30
3. mmyama
79
00:04.71
4. Piroska9
70
00:04.89
5. Charlleway
74
00:05.03
6. c1c51
33
00:05.60
7. Emzed
40
00:05.71
8. WinterBirth
46
00:06.00
9. HackMan
120
00:06.07
10. Solus
35
00:06.11
11. Silveras 00:06.22
12. Beastinboston
26
00:06.78
13. Fjznbeinfnn
8
00:07.05
14. HollowKing 00:07.22
15. sloppc1 00:07.77
16. trLBumm
27
00:07.82
17. Partimento
51
00:07.90
18. XxuanX 00:08.25
19. 히원
8
00:08.96
19. Bega
69
00:08.96
This Week
1. niqnna
18
00:04.47
2. mmyama
79
00:04.71
3. Piroska9
70
00:04.89
4. HackMan
120
00:08.00
5. LordHedgie 00:09.12
6. EG0hun 00:10.01
7. HollowKing 00:12.22
8. Strider500
97
00:14.16
9. Ratcat92
7
00:34.63
10. gaheimann
8
00:35.83
11.--- empty -----:--
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Today
1. mmyama
79
00:04.96
2. Piroska9
70
00:06.57
3. HackMan
120
00:08.64
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
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20.--- empty -----:--
MO3
1. numbrr
305
00:02.41
2. jaybrainer
247
00:02.52
3. vowels
216
00:02.71
4. Arok
115
00:02.86
5. Yeti
132
00:03.03
6. mtanzer
140
00:03.06
6. Douglas Shamlin Jr.
716
00:03.06
8. gtkrouwel
131
00:03.18
9. nabi
92
00:03.21
10. TashiroMiraki
217
00:03.43
AO5
1. numbrr
305
00:02.73
2. jaybrainer
247
00:02.75
3. vowels
216
00:03.02
4. Douglas Shamlin Jr.
716
00:03.09
5. Yeti
132
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
131
00:03.68
AO12
1. numbrr
305
00:03.28
2. jaybrainer
247
00:03.30
3. vowels
216
00:03.83
4. Yeti
132
00:03.87
5. mtanzer
140
00:03.89
6. Arok
115
00:04.12
7. gtkrouwel
131
00:04.27
8. Douglas Shamlin Jr.
716
00:04.52
9. sfumato
166
00:04.54
10. Oryn
165
00:04.57
Robots / programmatic solversinfo  
1.tlstyer
137
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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2026-01-12 12:40:37

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