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. mmyama
72
00:57.42
2. TomGuo
142
01:02.56
3. gtkrouwel
112
01:03.21
4. Kimseunghyeon 01:16.98
5. Kukko
102
01:27.98
6. Ryong L
74
01:39.52
7. sleepyfawn 01:44.39
8. Dorice
236
01:48.74
9. Theck
13
01:54.69
10. 苏苏
44
01:59.36
11. puzzlingpatzer
77
02:11.00
12. yeboiii
39
02:26.37
13. Praktisix
80
02:40.88
14. HackMan
95
02:51.45
15. rekted 03:18.32
16. Pissumurone 03:38.67
17. izrabelle
29
05:16.86
18. AgnieszkaNesa
84
05:49.66
19. chinggg
21
07:21.72
20. FunAcroFly
42
08:09.40
This Week
1. TomGuo
142
01:07.97
2. Kukko
102
01:27.98
3. Ryong L
74
01:48.86
4. Theck
13
01:54.69
5. HackMan
95
02:51.45
6. Praktisix
80
03:27.68
7. Pissumurone 03:38.67
8. izrabelle
29
05:16.86
9. AgnieszkaNesa
84
05:49.66
10. FunAcroFly
42
08:09.40
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Today
1. Ryong L
74
01:48.86
2. HackMan
95
04:08.01
3. FunAcroFly
42
08:09.40
4.--- empty -----:--
5.--- empty -----:--
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MO3
1. numbrr
285
00:46.10
2. TashiroMiraki
214
00:47.55
3. gtkrouwel
112
00:53.61
4. sfumato
165
01:01.21
5. qqwref
259
01:05.62
6. Yeti
104
01:06.28
7. Nick
217
01:07.31
8. mtanzer
140
01:10.95
9. summernight
202
01:12.70
10. mmyama
72
01:13.09
AO5
1. numbrr
285
00:46.10
2. TashiroMiraki
214
00:51.06
3. gtkrouwel
112
00:57.28
4. Yeti
104
01:07.43
5. sfumato
165
01:08.37
6. mtanzer
140
01:11.61
7. qqwref
259
01:13.56
8. summernight
202
01:14.94
9. Oryn
148
01:16.78
10. 2015YINJ02
148
01:20.51
AO12
1. numbrr
285
00:55.85
2. TashiroMiraki
214
00:56.88
3. gtkrouwel
112
01:05.34
4. summernight
202
01:19.65
5. qqwref
259
01:23.77
6. Oryn
148
01:24.66
7. mtanzer
140
01:25.21
8. Yeti
104
01:31.17
9. sfumato
165
01:32.17
10. z9z9z9z9z9
78
01:39.06
Robots / programmatic solversinfo  
1.tlstyer
106
00:00.011
2.hum@b0t
91
00:00.163
3.--- empty -----:--

* 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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2025-03-28 15:43:57

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