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. Yeti
132
00:47.22
2. Sonar
78
00:50.14
3. Zenta
85
00:52.74
4. stevethesquid
74
00:53.55
5. JiangGe 00:55.14
6. TomGuo
151
00:57.62
7. xxbh02jf 01:04.12
8. mmyama
79
01:11.38
9. katrin0000 01:12.53
10. mdeniz 01:14.19
11. Dorice
257
01:14.86
12. 1411673906 01:19.64
13. HackMan
120
01:26.18
14. seb00066
92
01:27.32
15. BernadetteL 01:29.51
16. Liv01 01:30.91
17. KongeBob 01:33.26
18. Jazka 01:36.99
19. Kimberly Fath
20
01:38.59
20. Maja Bartnik
28
01:38.83
This Week
1. Sonar
78
00:50.14
2. JiangGe 00:55.14
3. TomGuo
151
01:09.46
4. mmyama
79
01:11.38
5. katrin0000 01:12.53
6. Dorice
257
01:14.86
7. Liv01 01:30.91
8. seb00066
92
01:40.38
9. WYJ
56
01:42.25
10. HackMan
120
01:44.97
11. pipifax 01:47.45
12. snowingbird
1
01:50.17
13. Jazka 02:00.82
14. jessicazzzzz 02:17.85
15. Ebotreson
10
02:18.34
16. ambiorix 02:26.50
17. danpuzzler 02:45.68
18. chenh 02:52.18
19. LordHedgie 03:02.81
20. twinklstarcandy
5
03:08.24
Today
1. Ebotreson
10
02:18.34
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
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. numbrr
305
00:36.81
2. TashiroMiraki
217
00:41.81
3. Sonar
78
00:45.80
3. gtkrouwel
131
00:45.80
5. sfumato
166
00:48.33
6. qqwref
266
00:49.53
7. sauceguardian
103
00:53.17
8. mtanzer
140
00:53.20
8. Yeti
132
00:53.20
10. Brian Murphy
114
00:56.51
AO5
1. numbrr
305
00:38.20
2. TashiroMiraki
217
00:42.42
3. gtkrouwel
131
00:46.74
4. Sonar
78
00:47.77
5. sfumato
166
00:49.21
6. qqwref
266
00:53.33
7. sauceguardian
103
00:53.95
8. Yeti
132
00:54.33
9. mtanzer
140
00:54.43
10. Brian Murphy
114
00:57.69
AO12
1. numbrr
305
00:41.32
2. TashiroMiraki
217
00:45.90
3. gtkrouwel
131
00:50.82
4. Sonar
78
00:53.12
5. sfumato
166
00:54.44
6. qqwref
266
00:57.59
7. Yeti
132
00:57.72
8. mtanzer
140
00:58.75
9. sauceguardian
103
00:59.72
10. kdu
215
01:06.12
Robots / programmatic solversinfo  
1.tlstyer
137
00:00.009
2.hum@b0t
91
00:00.163
3.cheyette00:05.661

* 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

2026-01-09 03:32:09

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