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. lpbxrzpd
25
00:05.38
2. Kimseunghyeon 00:05.54
3. 2021zhao07
22
00:06.14
4. sauceguardian
97
00:06.72
5. Zemmel
75
00:07.95
5. May John
64
00:07.95
7. Parade
17
00:08.08
8. KETJAK
31
00:08.17
9. noxcallis 00:08.28
10. PickleCat
38
00:08.34
11. tufelix367
53
00:08.80
12. pipifax 00:09.36
13. Dorice
242
00:09.44
14. LesAM 00:09.66
15. SunOceanBeach
257
00:10.26
16. qobi
226
00:11.12
17. ChiefOsceola 00:11.41
18. Piroska9
63
00:11.75
19. HackMan
106
00:12.07
20. CauDravan
38
00:12.83
This Week
1. lpbxrzpd
25
00:05.38
2. Kimseunghyeon 00:05.54
3. Zemmel
75
00:07.95
4. pipifax 00:09.36
5. Dorice
242
00:09.44
6. Chaojie Fu
64
00:13.31
7. randomflyintaco
107
00:14.87
8. loki515
24
00:16.23
9. HackMan
106
00:17.20
10. Rickieman86 00:17.46
11. sjorford
29
00:20.75
12. Goochelaar
104
00:20.86
13. unirvana 00:37.32
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kimseunghyeon 00:09.14
2. HackMan
106
00:17.20
3. sjorford
29
00:20.75
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
00:04.70
2. vowels
216
00:05.21
3. mtanzer
140
00:05.22
4. Arok
112
00:05.24
5. sfumato
166
00:05.44
6. sauceguardian
97
00:05.81
7. TashiroMiraki
215
00:05.91
8. gtkrouwel
118
00:06.01
8. Yeti
117
00:06.01
10. jaybrainer
236
00:06.02
AO5
1. numbrr
297
00:04.78
2. mtanzer
140
00:05.96
3. sfumato
166
00:06.02
4. Arok
112
00:06.06
5. gtkrouwel
118
00:06.15
6. TashiroMiraki
215
00:06.18
7. sauceguardian
97
00:06.20
8. vowels
216
00:06.31
9. jaybrainer
236
00:06.33
10. Oryn
148
00:06.55
AO12
1. numbrr
297
00:05.38
2. sfumato
166
00:06.43
3. mtanzer
140
00:06.94
3. Arok
112
00:06.94
5. TashiroMiraki
215
00:07.08
6. sauceguardian
97
00:07.10
7. qqwref
259
00:07.20
8. Douglas Shamlin Jr.
693
00:07.34
9. Sonar
77
00:07.47
10. Oryn
148
00:07.54
Robots / programmatic solversinfo  
1.tlstyer
120
00:00.006
2.cheyette00:00.141
3.hum@b0t
91
00:00.160

* 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

2025-07-04 16:17:58

www.puzzle-light-up.com
Remove Ads
OSZAR »