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. ypw19
88
00:14.43
2. zenzaburo 00:16.21
3. niqnna
18
00:26.76
4. zyffr
20
00:31.00
5. keehaag
166
00:32.11
6. Nanoulefou 00:32.73
7. maxmoor 00:34.12
8. lauraapzz
77
00:34.33
9. daghan
34
00:35.19
10. trLBumm
31
00:36.53
11. 白切叉燒鵝
65
00:39.46
12. Jbrunt
139
00:40.14
13. LordHedgie 00:47.06
14. Dorice
263
00:49.17
15. Strider500
104
00:50.99
16. yuliapon 00:51.66
17. AnonyMinor
74
00:55.15
18. punkhead 00:56.65
19. RevLiam
28
00:57.53
20. beatrixwashere
114
00:59.83
This Week
1. ypw19
88
00:14.43
2. zenzaburo 00:16.21
3. Nanoulefou 00:32.73
4. maxmoor 00:42.01
5. LordHedgie 00:47.06
6. Dorice
263
00:49.17
7. Ryong L
79
01:04.36
8. punkhead 01:08.28
9. EG0hun 01:24.19
10. xilli 02:37.28
11. llmt9
88
04:18.31
12.--- empty -----:--
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Today
1. ypw19
88
00:14.43
2. zenzaburo 00:16.21
3. Nanoulefou 00:41.87
4. maxmoor 00:45.61
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
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MO3
1. numbrr
308
00:12.77
2. TashiroMiraki
219
00:14.96
3. gtkrouwel
133
00:16.28
4. Klunk
24
00:17.36
5. mtanzer
140
00:18.21
6. sfumato
166
00:20.43
7. Yeti
137
00:20.45
8. Nick
217
00:21.19
9. goodman15
61
00:21.64
10. mmyama
79
00:23.64
AO5
1. numbrr
308
00:14.36
2. TashiroMiraki
219
00:15.81
3. gtkrouwel
133
00:16.52
4. mtanzer
140
00:19.33
5. Yeti
137
00:19.59
6. sfumato
166
00:22.39
7. Nick
217
00:23.23
8. goodman15
61
00:24.61
9. Oryn
168
00:25.09
10. Yonatan Yarhi
72
00:25.89
AO12
1. numbrr
308
00:17.12
2. TashiroMiraki
219
00:17.29
3. gtkrouwel
133
00:19.99
4. Yeti
137
00:25.01
5. goodman15
61
00:27.90
6. Oryn
168
00:28.67
7. mtanzer
140
00:29.15
8. qqwref
266
00:29.59
9. Yonatan Yarhi
72
00:30.12
10. summernight
230
00:32.05
Robots / programmatic solversinfo  
1.tlstyer
141
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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2026-03-03 23:58:35

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