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. Arok
113
00:02.29
2. tantanaaa
77
00:02.36
3. Asitukl
10
00:02.64
4. sway85
18
00:02.77
5. LemonSherbet 00:02.85
6. Tmoney69 00:02.93
7. Freakazoyd
75
00:02.96
8. Solus
29
00:03.00
9. Albepm
16
00:03.20
10. goodman15
15
00:03.42
11. 71448Eva
9
00:03.50
12. We Ballin
10
00:03.55
13. jjconroy506
17
00:03.57
14. Parade
39
00:03.58
15. niqnna
18
00:03.63
16. Ysiweii
19
00:03.64
16. yellow0607
22
00:03.64
18. thrasymachus
30
00:03.67
19. KETJAK
33
00:03.70
20. Preston10
80
00:03.73
This Week
1. tantanaaa
77
00:02.36
2. Asitukl
10
00:02.64
3. sway85
18
00:02.77
4. Tmoney69 00:02.93
5. Freakazoyd
75
00:02.96
6. LemonSherbet 00:03.35
7. 71448Eva
9
00:03.50
8. niqnna
18
00:03.63
9. Ysiweii
19
00:03.64
9. yellow0607
22
00:03.64
11. Windsor
70
00:03.83
12. Albepm
16
00:04.11
13. Dorice
246
00:04.48
14. Solver83
72
00:04.73
15. Harry_Canyon
129
00:04.87
16. corgi61 00:05.50
17. aequidens
251
00:05.67
18. HackMan
112
00:05.83
19. Hashibrown 00:06.20
20. paejunk
54
00:06.30
Today
1. corgi61 00:05.50
2. sunleonid
9
00:07.14
3. Eaglesrbeast05
16
00:07.30
4. Partimento
34
00:11.64
5. AnnaMariaVivaldi
13
00:24.72
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. AnzaJoinDiscord
240
00:01.82
2. numbrr
300
00:02.18
3. vowels
216
00:02.19
4. Arok
113
00:02.20
5. sfumato
166
00:02.50
5. mtanzer
140
00:02.50
7. BingBongBob
108
00:02.53
8. qqwref
260
00:02.55
9. SkyBean1201
106
00:02.59
10. dkxxznxxx
32
00:02.61
AO5
1. AnzaJoinDiscord
240
00:01.97
2. numbrr
300
00:02.28
3. vowels
216
00:02.33
4. Arok
113
00:02.36
5. Douglas Shamlin Jr.
704
00:02.58
6. sfumato
166
00:02.59
7. SkyBean1201
106
00:02.61
8. mtanzer
140
00:02.63
9. sauceguardian
99
00:02.67
10. boru
106
00:02.68
AO12
1. AnzaJoinDiscord
240
00:02.49
2. numbrr
300
00:02.60
3. vowels
216
00:02.67
4. Arok
113
00:02.90
5. sfumato
166
00:02.98
6. Douglas Shamlin Jr.
704
00:03.00
7. mtanzer
140
00:03.09
8. sauceguardian
99
00:03.18
9. TashiroMiraki
216
00:03.27
10. qqwref
260
00:03.28
Robots / programmatic solversinfo  
1.tlstyer
126
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.
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2025-08-29 13:16:39

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