Light Up


Translate this site.

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.

Video Tutorial
Hide the rules

Share

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. LemonSherbet 00:02.50
1. Fjznbeinfnn 00:02.50
3. Wangxuye 00:02.52
4. sway85
22
00:02.54
5. TheDogMan
8
00:02.61
6. Ada Westerberg
12
00:02.67
7. kennethaw88
152
00:02.81
8. Truth-or-Peace
124
00:03.03
9. Jorgito Salles
47
00:03.14
10. AufdemWege
2
00:03.37
10. teliot
12
00:03.37
12. XiaoXin1113
30
00:03.43
13. hazzle 00:03.45
14. Jack Choi
9
00:03.49
14. Thrillhou 00:03.49
16. Freakazoyd
78
00:03.51
17. Evannnnnn 00:03.54
18. niqnna
18
00:03.56
19. Tmoney69 00:03.60
20. yyyyyyyejin
87
00:03.66
This Week
1. sway85
22
00:02.76
2. LemonSherbet 00:02.93
3. Jorgito Salles
47
00:03.14
4. TheDogMan
8
00:03.22
5. teliot
12
00:03.37
6. Jack Choi
9
00:03.49
7. Evannnnnn 00:03.54
8. niqnna
18
00:03.67
9. 3328037
59
00:04.55
10. Hwellyn
74
00:04.76
11. Oc
48
00:04.93
12. Piroska9
68
00:04.97
13. IkunPlz 00:04.98
14. 山重水复
21
00:05.06
15. Nyauchoo
6
00:05.13
16. pipifax 00:05.30
17. Sensei100000
11
00:06.05
18. mysterium
16
00:06.13
19. Mikhil13
11
00:06.21
20. TheToaphster 00:06.45
Today
1. niqnna
18
00:05.24
2. Sensei100000
11
00:06.05
3. Piroska9
68
00:06.21
4. HackMan
116
00:07.85
5. Gracexull
2
00:08.04
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. jaybrainer
242
00:01.82
2. numbrr
301
00:02.18
3. vowels
216
00:02.19
4. Arok
115
00:02.20
5. Yeti
122
00:02.49
6. sfumato
166
00:02.50
6. mtanzer
140
00:02.50
8. BingBongBob
108
00:02.53
9. qqwref
261
00:02.55
10. SkyBean1201
109
00:02.59
AO5
1. jaybrainer
242
00:01.97
2. numbrr
301
00:02.28
3. vowels
216
00:02.33
4. Arok
115
00:02.36
5. Douglas Shamlin Jr.
714
00:02.58
6. sfumato
166
00:02.59
7. SkyBean1201
109
00:02.61
8. mtanzer
140
00:02.63
9. sauceguardian
101
00:02.67
10. boru
114
00:02.68
AO12
1. jaybrainer
242
00:02.49
2. numbrr
301
00:02.60
3. vowels
216
00:02.67
4. Arok
115
00:02.90
5. sfumato
166
00:02.98
6. Douglas Shamlin Jr.
714
00:03.00
7. mtanzer
140
00:03.09
8. sauceguardian
101
00:03.18
9. Yeti
122
00:03.25
10. TashiroMiraki
217
00:03.27
Robots / programmatic solversinfo  
1.tlstyer
135
00:00.006
2.cheyette00:00.109
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.
You need to be logged in to track your averages


Find your position in

Enter screen name:


More Logic Puzzles:  hideshow

2025-11-08 14:37:30

www.puzzle-light-up.com
Remove Ads | Report This Ad