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. Goomy
109
00:13.90
2. Kimseunghyeon 00:18.61
3. mmyama
76
00:18.76
4. afidaleo
115
00:25.19
5. Jazka 00:26.69
6. Rickieman86 00:33.19
7. Buddybuddy 00:36.83
8. HackMan
101
00:37.31
9. maurysiek
41
00:39.19
10. WilsonCWMui
158
00:42.18
11. crema
154
00:42.19
12. grimmgirlfandom
148
00:53.54
13. RobitussinFlow
22
00:53.74
14. FunAcroFly
58
00:59.68
15. ambiorix 01:07.58
16. Varun Gopal
24
01:09.20
17. Dorice
240
01:11.27
18. asatzhh
22
01:15.24
19. unirvana 01:17.24
20. qobi
222
01:34.25
This Week
1. Kimseunghyeon 00:21.66
2. Goomy
109
00:21.78
3. Rickieman86 00:33.19
4. maurysiek
41
00:39.19
5. HackMan
101
00:58.08
6. erbaagatta 01:36.31
7. shangdou
17
02:21.06
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Today
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MO3
1. numbrr
291
00:11.07
2. mtanzer
140
00:13.41
3. TashiroMiraki
214
00:14.07
4. sfumato
166
00:15.17
5. Oryn
148
00:16.33
6. gtkrouwel
115
00:18.34
7. 2015YINJ02
148
00:19.38
8. Nick
217
00:19.85
9. qqwref
259
00:19.95
10. summernight
206
00:20.25
AO5
1. numbrr
291
00:12.09
2. TashiroMiraki
214
00:14.69
3. mtanzer
140
00:15.42
4. sfumato
166
00:15.52
5. Oryn
148
00:17.99
6. gtkrouwel
115
00:19.27
7. mmyama
76
00:20.09
8. qqwref
259
00:20.14
9. 2015YINJ02
148
00:20.18
10. crascodyllea
136
00:20.45
AO12
1. numbrr
291
00:15.43
2. mtanzer
140
00:17.29
3. TashiroMiraki
214
00:18.02
4. gtkrouwel
115
00:20.17
5. sfumato
166
00:20.39
6. qqwref
259
00:23.33
7. Nick
217
00:24.51
8. summernight
206
00:24.76
9. Oryn
148
00:25.51
10. crascodyllea
136
00:25.75
Robots / programmatic solversinfo  
1.tlstyer
112
00:00.007
2.hum@b0t
91
00:00.164
3.cheyette00:00.678

* 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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2025-05-22 15:09:53

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