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. gtkrouwel
128
00:10.28
2. goodman15
16
00:15.12
3. Wangxuye 00:22.42
4. niqnna
18
00:26.13
5. DdBbon 00:32.58
6. Nanoulefou 00:35.14
7. Ermouf
94
00:35.19
8. sporg 00:36.03
9. amdo1 00:40.16
10. Kelizo
27
00:44.23
11. Sneasel
3
00:47.08
12. IntotheLight
60
00:48.01
13. Dorice
251
00:49.39
14. AnonyMinor
60
00:52.01
15. 54kangxi
55
00:56.00
16. losnadie 00:57.34
17. randomflyintaco
126
01:00.33
18. Sawdust99
47
01:03.92
19. pokosuk
36
01:05.77
20. fishysua
151
01:05.87
This Week
1. goodman15
16
00:15.12
2. Ermouf
94
00:35.19
3. niqnna
18
00:39.30
4. IntotheLight
60
00:48.01
5. 54kangxi
55
00:56.00
6. sporg 00:57.86
7. Sawdust99
47
01:04.26
8. daghan
34
01:27.77
9. losnadie 01:32.76
10. tonyjo4312
25
01:39.48
11. 31415962
32
04:02.76
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1.--- empty -----:--
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
301
00:13.27
2. TashiroMiraki
217
00:14.96
3. gtkrouwel
128
00:16.28
4. Klunk
24
00:17.36
5. mtanzer
140
00:18.21
6. sfumato
166
00:20.43
7. Nick
217
00:21.19
8. mmyama
79
00:23.64
9. qqwref
260
00:23.72
10. Oryn
158
00:24.10
AO5
1. numbrr
301
00:14.36
2. TashiroMiraki
217
00:15.81
3. gtkrouwel
128
00:16.52
4. mtanzer
140
00:19.33
5. sfumato
166
00:22.39
6. Nick
217
00:23.23
7. Oryn
158
00:25.09
8. Yonatan Yarhi
72
00:25.89
9. Klunk
24
00:26.18
10. summernight
221
00:26.52
AO12
1. TashiroMiraki
217
00:17.29
2. numbrr
301
00:17.37
3. gtkrouwel
128
00:19.99
4. Oryn
158
00:28.67
5. mtanzer
140
00:29.15
6. qqwref
260
00:29.59
7. Yonatan Yarhi
72
00:30.12
8. summernight
221
00:32.05
9. Nick
217
00:32.64
10. Yeti
120
00:34.83
Robots / programmatic solversinfo  
1.tlstyer
130
00:00.008
2.hum@b0t
91
00:00.165
3.cheyette00:00.239

* 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

2025-10-19 07:08:19

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