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
143
00:56.54
2. wangzimoxx
15
00:58.43
3. mmyama
75
00:59.89
4. DarkChamp 01:00.00
5. tt1029
84
01:00.12
6. Hachiman 01:01.74
7. ykykpyk 01:02.10
8. Mayrink 01:09.66
9. Thrillhou 01:10.28
10. Hashibrown 01:13.55
11. iovichulo413
46
01:14.11
12. Kimseunghyeon 01:14.30
13. jorekami
84
01:19.71
14. lynda 01:22.39
15. nbapip 01:23.64
16. danmun 01:24.92
17. fugglydo 01:25.73
18. MrSafi
65
01:26.05
19. mmmmtra 01:26.79
20. Polaris.
8
01:32.13
This Week
1. TomGuo
143
00:56.54
2. DarkChamp 01:00.00
3. tt1029
84
01:04.31
4. ykykpyk 01:04.94
5. Hachiman 01:04.99
6. mmyama
75
01:17.38
7. danmun 01:24.92
8. lynda 01:25.31
9. fugglydo 01:25.73
10. MrSafi
65
01:26.05
11. mmmmtra 01:26.79
12. Kimseunghyeon 01:30.77
13. Polaris.
8
01:32.13
14. Thrillhou 01:33.96
15. ferry paye (Darlyte)
7
01:37.07
16. PickleCat 01:48.55
17. CrlD
112
02:02.40
18. steveoho 02:21.22
19. hiptopoker 02:22.36
20. crema
147
02:23.75
Today
1. tt1029
84
01:16.05
2. CrlD
112
02:55.36
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20.--- empty -----:--
MO3
1. numbrr
289
00:50.09
2. TashiroMiraki
214
00:51.08
3. 강일출
166
01:02.56
4. Mark M.
107
01:02.75
5. sfumato
166
01:02.97
6. gtkrouwel
114
01:06.73
7. mtanzer
140
01:08.67
8. Thomas Garner
161
01:10.08
9. dxjonas
122
01:13.39
10. Klunk
24
01:14.19
AO5
1. numbrr
289
00:53.75
2. TashiroMiraki
214
00:53.76
3. Mark M.
107
01:05.59
4. 강일출
166
01:07.85
5. mtanzer
140
01:09.99
6. gtkrouwel
114
01:10.53
7. Thomas Garner
161
01:12.16
8. Klunk
24
01:15.24
9. dxjonas
122
01:16.00
10. summernight
204
01:17.11
AO12
1. numbrr
289
01:10.81
2. TashiroMiraki
214
01:11.46
3. gtkrouwel
114
01:15.93
4. Thomas Garner
161
01:23.14
5. 강일출
166
01:24.51
6. Mark M.
107
01:25.52
7. mtanzer
140
01:26.99
8. dxjonas
122
01:29.41
9. qqwref
259
01:37.81
10. Moooon
108
01:38.40
Robots / programmatic solversinfo  
1.tlstyer
109
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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2025-05-02 04:29:44

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