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
128
00:04.13
2. Asitukl
20
00:07.06
3. daklqw
31
00:07.64
4. Wangxuye 00:07.72
5. niqnna
18
00:09.41
6. LesAM 00:16.35
7. tonyjo4312
25
00:16.42
8. kuwu
14
00:21.29
9. amdo1 00:22.72
10. lauraapzz
60
00:23.72
11. randomflyintaco
127
00:24.72
12. takaz 00:29.12
13. losnadie 00:29.64
14. Dorice
251
00:34.17
15. GlowyOrange
8
00:38.29
16. xenicat
131
00:38.43
17. fishysua
151
00:41.39
18. EG0hun 00:53.51
19. jkk88812345
42
01:01.39
20. daghan
34
01:05.66
This Week
1. niqnna
18
00:15.42
2. tonyjo4312
25
00:16.42
3. takaz 00:29.12
4. losnadie 00:29.64
5. jkk88812345
42
01:01.39
6. huskyyy 01:08.42
7. jordan12 02:43.56
8.--- empty -----:--
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Today
1. jkk88812345
42
01:01.39
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
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19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
301
00:06.50
2. mtanzer
140
00:07.85
3. gtkrouwel
128
00:08.31
4. sfumato
166
00:08.86
5. TashiroMiraki
217
00:09.14
6. tantanaaa
82
00:09.15
7. Oryn
158
00:09.76
8. jaybrainer
241
00:09.79
9. summernight
221
00:10.20
10. mmyama
79
00:10.27
AO5
1. numbrr
301
00:06.59
2. mtanzer
140
00:08.33
3. TashiroMiraki
217
00:08.83
4. gtkrouwel
128
00:09.11
5. Oryn
158
00:09.98
6. jaybrainer
241
00:10.30
7. 飞飞
50
00:10.62
8. sfumato
166
00:11.16
9. summernight
221
00:11.67
10. qqwref
260
00:11.75
AO12
1. numbrr
301
00:08.70
2. mtanzer
140
00:10.60
3. TashiroMiraki
217
00:11.63
4. gtkrouwel
128
00:12.37
5. summernight
221
00:14.51
6. 2015YINJ02
167
00:15.17
7. sfumato
166
00:15.19
8. qqwref
260
00:16.68
9. Oryn
158
00:17.33
10. Nick
217
00:17.69
Robots / programmatic solversinfo  
1.tlstyer
130
00:00.007
2.hum@b0t
91
00:00.161
3.cheyette00:00.184

* 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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2025-10-20 16:10:58

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