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. TheLoneWolf 00:10.12
2. gtkrouwel
117
00:10.92
3. Kimseunghyeon 00:13.20
4. sauceguardian
97
00:14.00
5. 2021zhao07
22
00:14.61
6. tufelix367
53
00:15.87
7. PickleCat
35
00:18.42
8. Harry_Canyon
126
00:19.64
9. COlDAiR
63
00:19.69
10. pipifax 00:20.11
11. May John
64
00:20.21
12. Chaojie Fu
64
00:21.24
13. zooandroo
98
00:23.27
14. HackMan
105
00:23.30
15. KETJAK
30
00:24.24
16. grimmgirlfandom
150
00:24.97
17. LesAM 00:28.02
18. ambiorix 00:33.07
19. Dorice
242
00:33.13
20. qobi
226
00:34.19
This Week
1. Kimseunghyeon 00:13.20
2. May John
64
00:20.21
3. Chaojie Fu
64
00:21.24
4. HackMan
105
00:23.30
5. pipifax 00:26.25
6. ambiorix 00:33.07
7. Rickieman86 00:49.72
8. Goochelaar
104
00:53.50
9. yngve 01:06.70
10. pokosuk
33
01:09.62
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. HackMan
105
00:39.17
2. Goochelaar
104
00:53.50
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
297
00:11.24
2. mtanzer
140
00:12.14
3. sfumato
166
00:12.30
4. TashiroMiraki
215
00:12.95
5. gtkrouwel
117
00:13.35
6. Oryn
148
00:13.36
7. Yeti
116
00:14.10
8. vowels
216
00:14.15
9. sauceguardian
97
00:14.22
10. Arok
112
00:14.35
AO5
1. numbrr
297
00:12.27
2. sfumato
166
00:12.81
3. gtkrouwel
117
00:13.10
4. TashiroMiraki
215
00:13.72
5. Oryn
148
00:13.82
6. mtanzer
140
00:14.07
7. qqwref
259
00:14.60
8. sauceguardian
97
00:14.79
9. Yeti
116
00:15.01
10. Nick
217
00:15.32
AO12
1. numbrr
297
00:13.99
2. gtkrouwel
117
00:14.18
3. TashiroMiraki
215
00:14.87
3. sfumato
166
00:14.87
5. mtanzer
140
00:16.17
6. sauceguardian
97
00:16.42
7. Oryn
148
00:16.44
8. qqwref
259
00:17.00
9. Sonar
77
00:17.17
10. Yeti
116
00:17.69
Robots / programmatic solversinfo  
1.tlstyer
120
00:00.007
2.hum@b0t
91
00:00.160
3.cheyette00:00.258

* 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

2025-06-30 20:32:00

www.puzzle-light-up.com
Remove Ads