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. ypw19
87
00:03.15
2. zenzaburo 00:03.19
3. niqnna
18
00:03.83
4. Piroska9
71
00:05.14
5. Ebotreson
23
00:05.38
6. 3328037
66
00:06.35
7. shfrUwU
7
00:06.83
8. Axiomatically_confus...
27
00:06.87
9. cccgao 00:07.20
10. BeccaWorm
122
00:07.38
11. HackMan
122
00:07.68
12. Dovenburg 00:07.95
13. a21737074481
169
00:08.00
14. Laika
6
00:08.03
15. Potato attack
40
00:08.55
16. TrimTom2
15
00:08.99
17. angelrose971
96
00:09.37
18. ohayou 00:09.44
19. CatBot3 00:09.71
20. EG0hun 00:09.98
This Week
1. zenzaburo 00:03.94
2. niqnna
18
00:04.09
3. 3328037
66
00:06.35
4. Axiomatically_confus...
27
00:06.87
5. BeccaWorm
122
00:07.38
6. a21737074481
169
00:08.00
7. Laika
6
00:08.03
8. shfrUwU
7
00:09.11
9. fishysua
154
00:10.06
10. PeeinPotty 00:10.57
11. Goochelaar
107
00:11.45
12. FCBSophie
67
00:15.56
13. EG0hun 00:16.46
14. peeps469
5
00:24.55
15. Broccoli
5
00:29.99
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. zenzaburo 00:06.05
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
00:02.41
2. jaybrainer
252
00:02.52
3. vowels
216
00:02.71
4. Arok
115
00:02.86
5. Yeti
137
00:02.89
6. mtanzer
140
00:03.06
6. Douglas Shamlin Jr.
717
00:03.06
8. gtkrouwel
133
00:03.18
9. nabi
92
00:03.21
10. TashiroMiraki
219
00:03.43
AO5
1. numbrr
308
00:02.62
2. jaybrainer
252
00:02.75
3. vowels
216
00:03.02
4. Douglas Shamlin Jr.
717
00:03.09
5. Yeti
137
00:03.20
6. Arok
115
00:03.23
7. mtanzer
140
00:03.25
7. nabi
92
00:03.25
9. TashiroMiraki
219
00:03.59
10. gtkrouwel
133
00:03.68
AO12
1. numbrr
308
00:03.28
2. jaybrainer
252
00:03.30
3. Yeti
137
00:03.69
4. vowels
216
00:03.83
5. mtanzer
140
00:03.89
6. Arok
115
00:04.12
7. gtkrouwel
133
00:04.27
8. Douglas Shamlin Jr.
717
00:04.52
9. sfumato
166
00:04.54
10. Oryn
167
00:04.57
Robots / programmatic solversinfo  
1.tlstyer
141
00:00.007
2.cheyette00:00.108
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.
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2026-02-26 22:17:52

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