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. BingBongBob
108
00:02.04
2. Arok
111
00:02.11
3. marbleeeee 00:02.14
4. Kimseunghyeon 00:02.46
5. KETJAK
27
00:02.62
6. hzy1025
44
00:02.74
7. DarkChamp 00:02.87
8. sauceguardian
97
00:02.91
9. sunflower554
5
00:02.92
10. 2021zhao07
22
00:03.02
11. novas.eclipse
5
00:03.03
12. Kaizer1824#0246
59
00:03.10
13. Sinnaruil 00:03.26
14. sue
38
00:03.29
14. PickleCat
27
00:03.29
16. OuO Seal
9
00:03.38
17. kamikazi
22
00:03.49
18. mmmmtra 00:03.60
19. beznickowy 00:03.83
20. 보믈고
28
00:03.87
This Week
1. marbleeeee 00:02.21
2. Kimseunghyeon 00:02.49
3. PickleCat
27
00:03.29
4. KETJAK
27
00:03.84
5. Piroska9
62
00:04.08
6. Galaxy21
42
00:04.35
7. noxcallis 00:04.76
8. Elias Westerbergh
53
00:04.82
9. Koakuma
47
00:05.12
10. Ermouf
81
00:05.20
11. Teodor Stanescu
13
00:05.27
12. HackMan
104
00:06.02
13. 喵緹
16
00:06.04
14. Liza94You 00:07.29
15. Ginge 00:07.53
16. Dorice
241
00:08.01
17. Albepm 00:08.21
18. RkRs21
11
00:09.36
19. nbapip 00:09.47
20. Savana 00:09.80
Today
1. PickleCat
27
00:03.29
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. jaybrainer
233
00:01.83
2. numbrr
295
00:02.18
3. vowels
214
00:02.19
4. Arok
111
00:02.20
5. sfumato
166
00:02.50
5. mtanzer
140
00:02.50
7. BingBongBob
108
00:02.53
8. qqwref
259
00:02.55
9. SkyBean1201
89
00:02.59
10. dkxxznxxx
31
00:02.61
AO5
1. jaybrainer
233
00:01.97
2. numbrr
295
00:02.28
3. vowels
214
00:02.33
4. Arok
111
00:02.36
5. Douglas Shamlin Jr.
691
00:02.58
6. sfumato
166
00:02.59
7. SkyBean1201
89
00:02.61
8. mtanzer
140
00:02.63
9. sauceguardian
97
00:02.67
10. boru
103
00:02.68
AO12
1. jaybrainer
233
00:02.49
2. numbrr
295
00:02.60
3. vowels
214
00:02.67
4. Arok
111
00:02.90
5. sfumato
166
00:02.98
6. Douglas Shamlin Jr.
691
00:03.00
7. mtanzer
140
00:03.09
8. sauceguardian
97
00:03.18
9. TashiroMiraki
215
00:03.27
10. qqwref
259
00:03.28
Robots / programmatic solversinfo  
1.tlstyer
117
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

2025-06-15 10:53:51

www.puzzle-light-up.com
Remove Ads