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. sway85
23
00:02.36
2. LemonSherbet 00:02.50
2. Fjznbeinfnn 00:02.50
4. Wangxuye 00:02.52
5. Evannnnnn 00:02.59
6. TheDogMan
8
00:02.61
7. Ada Westerberg
12
00:02.67
8. Tmoney69 00:02.71
9. AuroraSrc
17
00:02.74
10. kennethaw88
152
00:02.81
11. Jorgito Salles
48
00:03.14
12. Milonia
14
00:03.18
13. AufdemWege
2
00:03.37
13. teliot
12
00:03.37
15. XiaoXin1113
31
00:03.43
16. jorekami
89
00:03.44
17. hazzle 00:03.45
18. Jack Choi
9
00:03.49
19. Freakazoyd
79
00:03.51
20. Piroska9
68
00:03.54
This Week
1. sway85
23
00:02.36
2. Evannnnnn 00:02.59
3. Tmoney69 00:02.71
4. TheDogMan
8
00:02.74
4. AuroraSrc
17
00:02.74
6. Milonia
14
00:03.18
7. LemonSherbet 00:03.34
8. jorekami
89
00:03.44
9. Piroska9
68
00:03.54
10. Fjznbeinfnn 00:03.65
11. niqnna
18
00:03.89
12. azherzzz
11
00:04.00
13. Freakazoyd
79
00:04.03
14. jotheone230
12
00:04.37
15. IkunPlz
3
00:04.51
16. xxbh02jf 00:04.77
17. arod97
6
00:06.16
18. HackMan
117
00:06.45
19. dynesonne 00:06.73
20. iamstupid 00:06.94
Today
1. niqnna
18
00:03.89
2. arod97
6
00:06.16
3. HackMan
117
00:06.45
4. Nyauchoo
8
00:09.50
5. nelliecrain88 00:11.04
6. Toksku 00:12.58
7. Gracexull
6
00:31.12
8. chrispy
69
00:38.54
9. kroller
10
00:39.38
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. jaybrainer
243
00:01.82
2. numbrr
301
00:02.18
3. vowels
216
00:02.19
4. Arok
115
00:02.20
5. Yeti
124
00:02.49
6. sfumato
166
00:02.50
6. mtanzer
140
00:02.50
8. BingBongBob
108
00:02.53
9. qqwref
261
00:02.55
10. SkyBean1201
109
00:02.59
AO5
1. jaybrainer
243
00:01.97
2. numbrr
301
00:02.28
3. vowels
216
00:02.33
4. Arok
115
00:02.36
5. Douglas Shamlin Jr.
714
00:02.58
6. sfumato
166
00:02.59
7. SkyBean1201
109
00:02.61
8. mtanzer
140
00:02.63
9. sauceguardian
102
00:02.67
10. boru
115
00:02.68
AO12
1. jaybrainer
243
00:02.49
2. numbrr
301
00:02.60
3. vowels
216
00:02.67
4. Arok
115
00:02.90
5. sfumato
166
00:02.98
6. Douglas Shamlin Jr.
714
00:03.00
7. mtanzer
140
00:03.09
8. sauceguardian
102
00:03.18
9. Yeti
124
00:03.25
10. TashiroMiraki
217
00:03.27
Robots / programmatic solversinfo  
1.tlstyer
135
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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2025-11-15 14:43:34

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