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. numbrr
305
00:03.24
2. mmyama
79
00:07.26
3. niqnna
18
00:08.49
4. thall
55
00:08.51
5. keehaag
159
00:08.52
6. random_person
124
00:08.85
7. MushroomsCavern
40
00:09.12
8. zenzaburo 00:10.01
9. Nubbb
10
00:10.27
10. pipifax 00:11.04
11. Ebotreson
14
00:11.14
12. Rickieman86 00:11.17
13. HackMan
121
00:11.35
14. Fjznbeinfnn
8
00:12.15
15. Methyl Red
4
00:12.31
16. Kimberly Fath
22
00:13.47
17. qobi
233
00:13.81
18. LordHedgie 00:14.45
19. waggonra 00:14.54
20. Scr33n 00:15.07
This Week
1. mmyama
79
00:07.26
2. niqnna
18
00:08.49
3. thall
55
00:08.51
4. keehaag
159
00:08.52
5. zenzaburo 00:10.01
6. Rickieman86 00:11.61
7. Methyl Red
4
00:12.31
8. qobi
233
00:13.81
9. LordHedgie 00:14.45
10. waggonra 00:14.54
11. Charlleway
75
00:15.09
12. AnonyMinor
70
00:15.15
13. HackMan
121
00:15.25
14. Kenolo353
116
00:17.82
15. HollowKing 00:25.59
16. potowski 00:25.61
17. Gxin001
11
00:25.78
18. Avish Kaushik
10
00:32.77
19. chrispy
71
00:41.23
20. モグモグ
24
01:53.56
Today
1. AnonyMinor
70
00:15.15
2. LordHedgie 00:32.28
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
305
00:04.21
2. vowels
216
00:05.21
3. mtanzer
140
00:05.22
4. Arok
115
00:05.24
5. gtkrouwel
132
00:05.36
6. sfumato
166
00:05.44
7. Yeti
133
00:05.79
8. sauceguardian
103
00:05.81
9. TashiroMiraki
217
00:05.91
10. jaybrainer
247
00:06.02
AO5
1. numbrr
305
00:04.76
2. gtkrouwel
132
00:05.49
3. Yeti
133
00:05.96
3. mtanzer
140
00:05.96
5. sfumato
166
00:06.02
6. Arok
115
00:06.06
7. TashiroMiraki
217
00:06.18
8. sauceguardian
103
00:06.20
9. vowels
216
00:06.31
10. jaybrainer
247
00:06.33
AO12
1. numbrr
305
00:05.38
2. gtkrouwel
132
00:06.29
3. sfumato
166
00:06.43
4. mtanzer
140
00:06.94
4. Arok
115
00:06.94
6. Yeti
133
00:07.07
7. TashiroMiraki
217
00:07.08
8. sauceguardian
103
00:07.10
9. qqwref
266
00:07.20
10. Douglas Shamlin Jr.
716
00:07.34
Robots / programmatic solversinfo  
1.tlstyer
137
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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2026-01-19 05:08:41

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