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
127
00:02.74
1. Asitukl
20
00:02.74
3. Oryn
157
00:04.28
4. Wangxuye 00:04.52
5. niqnna
18
00:04.59
6. iti119 00:04.60
7. LemonSherbet 00:04.94
8. Rhododendron
141
00:05.17
9. Piroska9
66
00:05.86
10. EdenGameMaster
23
00:06.00
11. jimmywang 00:06.29
12. mvl666Darkrio
97
00:06.41
13. Dorice
250
00:06.85
14. FunAcroFly
98
00:08.76
15. Preston10
91
00:08.78
16. Makinoz 00:09.23
17. corgi61 00:10.09
18. lyr1s
15
00:10.25
19. Ermouf
92
00:10.39
20. fishysua
149
00:10.85
This Week
1. Asitukl
20
00:03.88
2. Wangxuye 00:04.52
3. niqnna
18
00:05.74
4. lyr1s
15
00:10.25
5. Mikhil13
8
00:18.26
6. lauraapzz
60
00:19.45
7. randomflyintaco
124
00:22.58
8. losnadie 00:24.51
9. bellajang 00:41.12
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Today
1. niqnna
18
00:07.13
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
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MO3
1. numbrr
300
00:02.83
2. vowels
216
00:03.01
3. mtanzer
140
00:03.39
4. TashiroMiraki
216
00:03.58
5. gtkrouwel
127
00:04.13
6. Klunk
24
00:04.23
7. Nick
217
00:04.31
8. Oryn
157
00:04.33
9. Asitukl
20
00:04.38
10. jaybrainer
241
00:04.56
AO5
1. vowels
216
00:03.35
2. numbrr
300
00:03.52
3. mtanzer
140
00:03.83
4. TashiroMiraki
216
00:04.25
5. gtkrouwel
127
00:04.29
6. Klunk
24
00:04.42
7. Oryn
157
00:04.65
8. Asitukl
20
00:04.73
9. Nick
217
00:04.74
10. sfumato
166
00:04.83
AO12
1. numbrr
300
00:04.19
2. vowels
216
00:04.71
3. gtkrouwel
127
00:04.88
4. mtanzer
140
00:05.02
5. Oryn
157
00:05.62
6. TashiroMiraki
216
00:05.86
7. Nick
217
00:05.93
8. sfumato
166
00:06.53
9. 2015YINJ02
165
00:06.58
10. 飞飞
50
00:06.69
Robots / programmatic solversinfo  
1.tlstyer
129
00:00.007
2.cheyette00:00.115
3.hum@b0t
91
00:00.159

* 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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2025-10-03 14:15:00

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