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. Kimseunghyeon 00:03.42
2. Parade
8
00:04.21
3. syucream
99
00:04.23
4. PickleCat
31
00:04.28
5. Piroska9
62
00:04.96
6. HackMan
104
00:05.21
7. TomGuo
145
00:06.09
8. May John
59
00:06.14
9. fishysua
142
00:06.67
10. leonleonidis
48
00:07.69
11. Ermouf
83
00:07.97
12. Capybara카피바라...
52
00:08.54
13. Rickieman86 00:08.77
14. zooandroo
96
00:08.97
15. Dorice
241
00:09.25
16. Ginge 00:09.26
17. qobi
225
00:09.43
18. rwh0003
73
00:09.51
19. VenuStar
40
00:11.16
20. sodiumwater 00:15.06
This Week
1. Kimseunghyeon 00:03.53
2. Parade
8
00:04.21
3. PickleCat
31
00:04.28
4. May John
59
00:06.14
5. Ermouf
83
00:07.97
6. HackMan
104
00:08.78
7. VenuStar
40
00:11.16
8. Dorice
241
00:22.29
9. RosemaryW 00:26.80
10. a p
12
00:27.10
11. shangdou
21
00:34.37
12. minjoo
8
00:42.69
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Today
1. Kimseunghyeon 00:04.83
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5.--- empty -----:--
6.--- empty -----:--
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MO3
1. numbrr
295
00:02.49
2. jaybrainer
234
00:02.68
3. vowels
215
00:02.71
4. Arok
112
00:02.86
5. Yeti
116
00:03.03
6. mtanzer
140
00:03.06
6. Douglas Shamlin Jr.
691
00:03.06
8. nabi
92
00:03.21
9. TashiroMiraki
215
00:03.43
10. Klunk
24
00:03.64
AO5
1. numbrr
295
00:02.73
2. jaybrainer
234
00:02.75
3. vowels
215
00:03.02
4. Douglas Shamlin Jr.
691
00:03.09
5. Arok
112
00:03.23
6. mtanzer
140
00:03.25
6. nabi
92
00:03.25
8. TashiroMiraki
215
00:03.59
9. Klunk
24
00:03.74
10. Oryn
148
00:03.84
AO12
1. numbrr
295
00:03.28
2. jaybrainer
234
00:03.30
3. vowels
215
00:03.83
4. mtanzer
140
00:03.89
5. Arok
112
00:04.12
6. Douglas Shamlin Jr.
691
00:04.52
7. sfumato
166
00:04.54
8. Oryn
148
00:04.57
9. TashiroMiraki
215
00:04.58
10. Klunk
24
00:04.81
Robots / programmatic solversinfo  
1.tlstyer
118
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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2025-06-19 07:56:20

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