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. TomGuo
151
00:52.68
2. tt1029
115
00:57.37
3. zenzaburo 01:03.66
4. Jamwich
21
01:34.56
5. geyik
203
01:39.92
6. FCBSophie
67
01:54.94
7. wamfly
21
01:55.39
8. Dorice
262
01:58.52
9. HackMan
122
02:00.56
10. niqnna
18
02:04.53
11. AnonyMinor
73
02:11.24
12. Methyl Red
12
02:21.03
13. Ebotreson
23
02:23.23
14. trLBumm
30
02:24.17
15. Praktisix
122
02:26.97
16. Amator 02:31.65
17. ScoutDad 02:36.09
18. angelrose971
96
02:40.17
19. Strider500
103
02:41.22
20. Truth-or-Peace
131
02:58.57
This Week
1. TomGuo
151
00:52.68
2. zenzaburo 01:03.66
3. AnonyMinor
73
02:11.24
4. ScoutDad 02:36.09
5. Strider500
103
02:41.22
6. Amator 02:43.00
7. niqnna
18
02:43.57
8. Praktisix
122
02:44.77
9. bozyslaw67
64
02:58.80
10. Dorice
262
05:08.33
11. SophieK
52
05:08.75
12. HackMan
122
05:19.16
13. BlueShark
14
16:38.16
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. HackMan
122
05:19.16
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
308
00:46.10
2. TashiroMiraki
218
00:47.55
3. gtkrouwel
133
00:48.99
4. sfumato
166
01:01.21
5. qqwref
266
01:05.62
6. Yeti
137
01:06.28
7. Nick
217
01:07.31
8. mtanzer
140
01:10.95
9. 2015YINJ02
175
01:12.11
10. summernight
229
01:12.70
AO5
1. numbrr
308
00:46.10
2. TashiroMiraki
218
00:51.06
3. gtkrouwel
133
00:52.43
4. Yeti
137
01:07.43
5. sfumato
166
01:08.37
6. mtanzer
140
01:11.61
7. qqwref
266
01:13.56
8. tt1029
115
01:13.91
9. summernight
229
01:14.94
10. 2015YINJ02
175
01:15.93
AO12
1. numbrr
308
00:55.85
2. gtkrouwel
133
00:56.02
3. TashiroMiraki
218
00:56.88
4. summernight
229
01:19.65
5. qqwref
266
01:23.77
6. Oryn
167
01:24.66
7. mtanzer
140
01:25.21
8. Yeti
137
01:31.17
9. sfumato
166
01:32.17
10. 2015YINJ02
175
01:33.71
Robots / programmatic solversinfo  
1.tlstyer
141
00:00.011
2.hum@b0t
91
00:00.163
3.cheyette00:02.504

* 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

2026-02-20 13:17:48

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