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. geyik
200
00:14.12
2. zenzaburo 00:14.80
3. Jazka 00:18.58
4. niqnna
18
00:20.58
5. mmyama
79
00:20.84
6. random_person
126
00:22.71
7. LordHedgie 00:31.04
8. HackMan
121
00:31.19
9. Beastinboston
33
00:32.99
10. angelrose971
96
00:33.20
11. Ebotreson
17
00:33.74
12. Rickieman86 00:34.89
13. Dorice
259
00:36.25
14. lauraapzz
71
00:38.16
15. Jamwich
15
00:44.34
16. 11RJ6 00:44.44
17. FunAcroFly
118
00:45.67
18. NaPro 00:46.32
19. Partimento
52
01:01.81
20. Charlleway
75
01:03.53
This Week
1. geyik
200
00:14.12
2. zenzaburo 00:14.80
3. Jazka 00:18.58
4. niqnna
18
00:22.06
5. LordHedgie 00:31.04
6. HackMan
121
00:31.65
7. Ebotreson
17
00:33.74
8. Jamwich
15
00:44.34
9. NaPro 00:46.32
10. Strider500
99
01:06.27
11. EG0hun 01:27.31
12. ohayou 01:48.49
13.--- empty -----:--
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19.--- empty -----:--
20.--- empty -----:--
Today
1. niqnna
18
00:30.00
2. Jazka 00:32.67
3. Strider500
99
01:12.57
4. HackMan
121
02:09.37
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
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20.--- empty -----:--
MO3
1. numbrr
306
00:11.07
2. mtanzer
140
00:13.41
3. gtkrouwel
132
00:14.04
4. TashiroMiraki
217
00:14.07
5. sfumato
166
00:15.17
6. Oryn
166
00:16.33
7. Yeti
134
00:16.95
8. Zenta
89
00:19.31
9. 2015YINJ02
173
00:19.38
10. Nick
217
00:19.85
AO5
1. numbrr
306
00:12.09
2. gtkrouwel
132
00:13.18
3. TashiroMiraki
217
00:14.69
4. mtanzer
140
00:15.42
5. sfumato
166
00:15.52
6. Oryn
166
00:17.99
7. Yeti
134
00:18.45
8. mmyama
79
00:20.09
9. qqwref
266
00:20.14
10. Zenta
89
00:20.17
AO12
1. numbrr
306
00:15.43
2. gtkrouwel
132
00:16.27
3. mtanzer
140
00:17.29
4. TashiroMiraki
217
00:18.02
5. sfumato
166
00:20.39
6. Yeti
134
00:23.32
7. qqwref
266
00:23.33
8. Nick
217
00:24.51
9. summernight
227
00:24.76
10. Oryn
166
00:25.51
Robots / programmatic solversinfo  
1.tlstyer
137
00:00.007
2.hum@b0t
91
00:00.164
3.cheyette00:00.356

* 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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2026-01-26 16:19:59

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