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. TashiroMiraki
210
00:43.60
2. DarkChamp 00:44.65
3. Mayrink 00:57.49
4. YetiDumb
86
01:02.37
5. tt1029
69
01:02.60
6. Hachiman 01:04.74
7. mmyama
63
01:06.57
8. TomGuo
138
01:13.77
9. lynda 01:23.57
10. TheET 01:25.92
11. highprime
96
01:25.95
12. ykykpyk 01:29.63
13. Leanessa 01:30.29
14. zyffr
20
01:38.39
15. Bhaygin 01:38.73
16. PickleCat 01:38.77
17. Kimseunghyeon 01:41.51
18. Wookieki 01:45.43
19. nbapip 01:45.91
20. Thrillhou 01:48.72
This Week
1. tt1029
69
01:06.00
2. mmyama
63
01:06.57
3. Mayrink 01:10.86
4. Hachiman 01:12.58
5. TomGuo
138
01:13.77
6. TheET 01:25.92
7. ykykpyk 01:32.26
8. lynda 01:34.16
9. Bhaygin 01:43.04
10. PickleCat 01:50.68
11. mmmmtra 01:51.77
12. Kimseunghyeon 02:01.39
13. sue
17
02:14.70
14. YukariSaiga 02:15.99
15. noliai
177
02:16.35
16. bwangarang
49
02:19.47
17. Spatharios
4
02:22.10
18. aeunchae
8
02:35.17
19. bozyslaw67
64
02:37.03
20. Wabznazm
31
02:38.89
Today
1. mmyama
63
01:10.43
2. tt1029
69
01:18.62
3. TheET 01:25.92
4. lynda 01:47.03
5. ykykpyk 01:48.46
6. mmmmtra 01:51.77
7. hiptopoker 03:08.28
8. mfd31 03:35.24
9. noliai
177
03:57.73
10. moreau Yanice
8
04:40.44
11. Freya135246 05:46.86
12. andreichera 06:17.83
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
269
00:50.09
2. TashiroMiraki
210
00:51.08
3. 강일출
160
01:02.56
4. Mark M.
105
01:02.75
5. sfumato
164
01:02.97
6. gtkrouwel
106
01:06.73
7. mtanzer
140
01:08.67
8. Thomas Garner
153
01:12.38
9. dxjonas
110
01:13.39
10. Klunk
24
01:14.19
AO5
1. numbrr
269
00:53.75
2. TashiroMiraki
210
00:53.76
3. Mark M.
105
01:05.59
4. 강일출
160
01:07.85
5. mtanzer
140
01:09.99
6. gtkrouwel
106
01:10.53
7. Klunk
24
01:15.24
8. Thomas Garner
153
01:15.92
9. dxjonas
110
01:16.00
10. crascodyllea
130
01:19.53
AO12
1. numbrr
269
01:10.81
2. TashiroMiraki
210
01:11.46
3. gtkrouwel
106
01:15.93
4. 강일출
160
01:24.51
5. Mark M.
105
01:25.52
6. mtanzer
140
01:26.99
7. dxjonas
110
01:29.41
8. Thomas Garner
153
01:37.81
8. qqwref
259
01:37.81
10. summernight
189
01:40.63
Robots / programmatic solversinfo  
1.tlstyer
95
00:00.015
2.preciousmouse
68
00:01.075
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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2024-12-09 16:58:56

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