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. numbrr
305
00:12.41
2. mmyama
79
00:20.04
3. niqnna
18
00:27.25
4. goodman15
60
00:27.51
5. KWLUNA
14
00:32.88
6. lauraapzz
69
00:35.85
7. DdBbon 00:36.03
8. Kelizo
34
00:37.90
9. Jorgito Salles
49
00:38.01
10. Jazka 00:42.95
11. dazimzam1
7
00:44.68
12. Nanoulefou 00:44.91
13. maxmoor 00:47.49
14. Ebotreson
13
00:48.98
15. HackMan
120
00:54.13
16. Dorice
259
00:58.14
17. yuliapon 01:00.10
18. daghan
34
01:08.07
19. Emzed
44
01:08.61
20. EG0hun 01:15.63
This Week
1. mmyama
79
00:20.04
2. niqnna
18
00:34.45
3. lauraapzz
69
00:35.85
4. DdBbon 00:36.03
5. dazimzam1
7
00:44.68
6. Nanoulefou 00:44.91
7. maxmoor 00:47.97
8. daghan
34
01:08.07
9. qobi
233
01:16.83
10. FunAcroFly
117
01:38.83
11. LordHedgie 01:42.00
12. Beastinboston
29
01:46.75
13. Kenolo353
116
04:05.58
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Today
1. niqnna
18
00:34.45
2. daghan
34
01:08.07
3. Kenolo353
116
04:05.58
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
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MO3
1. numbrr
305
00:12.77
2. TashiroMiraki
217
00:14.96
3. gtkrouwel
132
00:16.28
4. Klunk
24
00:17.36
5. mtanzer
140
00:18.21
6. sfumato
166
00:20.43
7. Yeti
133
00:20.45
8. Nick
217
00:21.19
9. goodman15
60
00:21.64
10. mmyama
79
00:23.64
AO5
1. numbrr
305
00:14.36
2. TashiroMiraki
217
00:15.81
3. gtkrouwel
132
00:16.52
4. mtanzer
140
00:19.33
5. Yeti
133
00:19.59
6. sfumato
166
00:22.39
7. Nick
217
00:23.23
8. goodman15
60
00:24.61
9. Oryn
165
00:25.09
10. Yonatan Yarhi
72
00:25.89
AO12
1. numbrr
305
00:17.12
2. TashiroMiraki
217
00:17.29
3. gtkrouwel
132
00:19.99
4. Yeti
133
00:25.01
5. goodman15
60
00:27.90
6. Oryn
165
00:28.67
7. mtanzer
140
00:29.15
8. qqwref
266
00:29.59
9. Yonatan Yarhi
72
00:30.12
10. summernight
227
00:32.05
Robots / programmatic solversinfo  
1.tlstyer
137
00:00.008
2.hum@b0t
91
00:00.165
3.cheyette00:00.239

* 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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2026-01-17 20:55:21

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