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. TomGuo
151
00:57.63
2. zenzaburo 01:03.68
3. tt1029
112
01:04.29
4. mmmmtra 01:05.31
5. cryptOakmont 01:05.64
6. Squid
53
01:07.40
7. mmyama
79
01:08.94
8. Twipsii 01:22.57
9. zyffr
20
01:24.51
10. Quarterback7
113
01:26.04
11. katrin0000 01:28.08
12. Thrillhou 01:28.68
13. wamfly
21
01:30.43
14. DdBbon 01:31.07
15. popFolk 01:34.80
16. JohnNa
24
01:36.77
17. KongeBob 01:37.98
18. ykykpyk 01:40.80
19. jorekami
91
01:41.05
20. PickleCat
53
01:44.83
This Week
1. zenzaburo 01:03.68
2. TomGuo
151
01:04.21
3. cryptOakmont 01:05.64
4. tt1029
112
01:06.63
5. Squid
53
01:22.83
6. DdBbon 01:31.33
7. Twipsii 01:36.63
8. Thrillhou 01:38.74
9. Jamwich
21
02:05.64
10. teerapong
63
02:07.67
11. wamfly
21
02:08.98
12. lauraapzz
73
02:09.21
13. xinnnnnn
13
02:29.53
14. amdo1 02:34.12
15. CrlD
120
02:36.92
16. Gigiw
74
02:40.76
17. niqnna
18
02:45.41
18. bozyslaw67
64
02:48.02
19. hiptopoker 02:51.13
20. AzuReVaPouR 02:53.51
Today
1. tt1029
112
01:07.21
2. Squid
53
01:28.53
3. DdBbon 01:34.27
4. กอล์ฟ อ...
112
03:06.58
5. analili 03:27.86
6. Methyl Red
7
03:47.58
7. Happylad_TZ
5
04:42.83
8. 999111 05:23.38
9. PhilDiggety 05:51.31
10. Gigiw
74
7:42:16.29
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
306
00:50.09
2. TashiroMiraki
217
00:51.08
3. 강일출
175
01:02.56
4. Mark M.
114
01:02.66
5. sfumato
166
01:02.97
6. Yeti
135
01:04.76
7. gtkrouwel
132
01:05.10
8. mtanzer
140
01:08.67
9. 2015YINJ02
173
01:09.95
10. Thomas Garner
171
01:10.08
AO5
1. numbrr
306
00:53.75
2. TashiroMiraki
217
00:53.76
3. Mark M.
114
01:05.59
4. 강일출
175
01:07.85
5. gtkrouwel
132
01:08.46
6. mtanzer
140
01:09.99
7. Yeti
135
01:10.08
8. Thomas Garner
171
01:12.16
9. Klunk
24
01:15.24
10. dxjonas
144
01:16.00
AO12
1. numbrr
306
01:10.81
2. TashiroMiraki
217
01:11.46
3. gtkrouwel
132
01:14.83
4. Yeti
135
01:21.79
5. Thomas Garner
171
01:23.14
6. 강일출
175
01:24.51
7. Mark M.
114
01:25.52
8. mtanzer
140
01:26.99
9. dxjonas
144
01:29.41
10. Moooon
119
01:34.35
Robots / programmatic solversinfo  
1.tlstyer
138
00:00.014
2.hum@b0t
91
00:00.169
3.preciousmouse
74
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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2026-01-30 11:41:24

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