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. mirs
2
00:27.39
2. DarkChamp 00:43.17
3. gtkrouwel
116
00:53.35
4. TomGuo
145
00:56.23
5. wangzimoxx
15
00:59.23
6. tt1029
90
00:59.36
7. PickleCat
31
01:01.53
8. Hachiman 01:04.34
9. ykykpyk 01:05.67
10. mmyama
77
01:05.81
11. Nushtabulous 01:10.75
12. katrin0000 01:12.07
13. Theck
24
01:15.49
14. Mayrink 01:17.00
15. Freakazoyd
64
01:17.42
16. Kimseunghyeon 01:18.13
17. Billo93 01:20.15
18. Inf3rnal3s
28
01:20.76
19. fugglydo 01:23.08
20. jorekami
85
01:29.42
This Week
1. TomGuo
145
01:00.52
2. tt1029
90
01:04.75
3. Theck
24
01:15.49
4. mmyama
77
01:18.15
5. Inf3rnal3s
28
01:20.76
6. Kimseunghyeon 01:24.85
7. PickleCat
31
01:29.52
8. Hesper
64
01:30.20
9. nbapip 01:37.81
10. May John
59
01:47.35
11. fimcg 01:50.46
12. DdBbon 02:06.61
13. Lgreen132 02:22.82
14. dnfh1 02:26.64
15. Lou Jagosz
50
02:29.53
16. hiptopoker 02:32.38
17. batiko 02:33.92
18. HackMan
104
02:34.91
19. lilyoooo
19
02:38.36
20. chenh 02:49.10
Today
1. tt1029
90
01:15.34
2. May John
59
01:47.35
3. dnfh1 02:39.41
4. AzuReVaPouR 03:28.33
5. Gigiw
47
06:01.56
6. a p
12
06:04.54
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
295
00:50.09
2. TashiroMiraki
215
00:51.08
3. 강일출
166
01:02.56
4. Mark M.
108
01:02.75
5. sfumato
166
01:02.97
6. gtkrouwel
116
01:05.10
7. mtanzer
140
01:08.67
8. Thomas Garner
164
01:10.08
9. dxjonas
125
01:13.39
10. Klunk
24
01:14.19
AO5
1. numbrr
295
00:53.75
2. TashiroMiraki
215
00:53.76
3. Mark M.
108
01:05.59
4. 강일출
166
01:07.85
5. gtkrouwel
116
01:08.46
6. mtanzer
140
01:09.99
7. Thomas Garner
164
01:12.16
8. Klunk
24
01:15.24
9. dxjonas
125
01:16.00
10. summernight
209
01:17.11
AO12
1. numbrr
295
01:10.81
2. TashiroMiraki
215
01:11.46
3. gtkrouwel
116
01:14.83
4. Thomas Garner
164
01:23.14
5. 강일출
166
01:24.51
6. Mark M.
108
01:25.52
7. mtanzer
140
01:26.99
8. dxjonas
125
01:29.41
9. Yeti
116
01:34.48
10. Moooon
111
01:35.35
Robots / programmatic solversinfo  
1.tlstyer
118
00:00.014
2.hum@b0t
91
00:00.169
3.preciousmouse
69
00:01.075

* 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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2025-06-19 08:46:51

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