Light Up


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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.

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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
00:04.31
2. Asitukl
20
00:05.03
3. Wangxuye 00:06.18
4. Oryn
158
00:07.18
5. sway85
21
00:07.39
6. Dorice
251
00:08.19
7. mvl666Darkrio
98
00:08.85
8. corgi61 00:08.89
9. niqnna
18
00:08.96
10. pipifax 00:10.24
11. Jorgito Salles
44
00:10.61
12. tonyjo4312
25
00:11.01
13. HackMan
116
00:12.29
14. fishysua
151
00:12.51
15. lyr1s
16
00:12.74
16. Koakuma
49
00:14.37
17. angelrose971
95
00:14.43
18. Goochelaar
106
00:14.48
19. dtyamada
104
00:14.68
20. Anna Redzik
46
00:15.35
This Week
1. pipifax 00:10.41
2. niqnna
18
00:10.49
3. tonyjo4312
25
00:11.01
4. HackMan
116
00:14.55
5. Anna Redzik
46
00:15.35
6. 54kangxi
55
00:15.54
7. paejunk
54
00:16.81
8. Goochelaar
106
00:18.47
9. Educated-cat
30
00:20.62
10. TheToaphster 00:35.27
11. chrispy
68
00:38.41
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Today
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MO3
1. numbrr
301
00:04.70
2. vowels
216
00:05.21
3. mtanzer
140
00:05.22
4. Arok
113
00:05.24
5. gtkrouwel
128
00:05.36
6. sfumato
166
00:05.44
7. sauceguardian
101
00:05.81
8. TashiroMiraki
217
00:05.91
9. Yeti
120
00:06.01
10. jaybrainer
241
00:06.02
AO5
1. numbrr
301
00:04.78
2. gtkrouwel
128
00:05.49
3. mtanzer
140
00:05.96
4. sfumato
166
00:06.02
5. Arok
113
00:06.06
6. TashiroMiraki
217
00:06.18
7. sauceguardian
101
00:06.20
8. vowels
216
00:06.31
9. jaybrainer
241
00:06.33
10. Oryn
158
00:06.55
AO12
1. numbrr
301
00:05.38
2. gtkrouwel
128
00:06.29
3. sfumato
166
00:06.43
4. mtanzer
140
00:06.94
4. Arok
113
00:06.94
6. TashiroMiraki
217
00:07.08
7. sauceguardian
101
00:07.10
8. qqwref
260
00:07.20
9. Douglas Shamlin Jr.
713
00:07.34
10. Sonar
77
00:07.47
Robots / programmatic solversinfo  
1.tlstyer
130
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.
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2025-10-19 18:50:42

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