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
00:59.09
2. tt1029
81
01:01.12
3. Hachiman 01:02.63
4. TomGuo
142
01:02.74
5. Mayrink 01:07.01
6. Nushtabulous 01:19.10
7. Yeti
104
01:20.82
8. ykykpyk 01:22.07
9. mmmmtra 01:23.14
10. wangzimoxx
15
01:23.56
11. Thrillhou 01:25.12
12. fugglydo 01:25.22
13. Kimseunghyeon 01:27.43
14. Moooon
107
01:28.73
15. Theck
13
01:30.13
16. lynda 01:31.88
17. lucerna 01:32.53
18. sue
34
01:33.43
19. Candyman 01:34.75
20. Twipsii 01:36.98
This Week
1. TomGuo
142
01:02.82
2. mmyama
72
01:07.06
3. Hachiman 01:07.78
4. tt1029
81
01:09.70
5. Yeti
104
01:20.82
6. ykykpyk 01:22.07
7. Theck
13
01:30.13
8. lynda 01:31.88
9. Thrillhou 01:33.32
10. Candyman 01:34.75
11. iovichulo413
45
01:39.97
12. bwangarang
62
01:48.91
13. PickleCat 01:51.34
14. Mc Lag
104
01:52.42
15. Billo93 01:57.25
16. teerapong
44
02:03.79
17. Mauser 02:11.22
18. maioxl 02:11.76
19. amdo1 02:32.18
20. HackMan
95
02:42.40
Today
1. tt1029
81
01:11.23
2. TomGuo
142
01:13.42
3. amdo1 02:32.18
4. aequidens
238
02:42.83
5. sleepyfawn 03:00.03
6. nrtz
129
03:34.72
7. TomKorn 05:03.55
8. xzaxzaazx
89
06:44.07
9. HackMan
95
06:56.31
10. FunAcroFly
42
8:16:55.73
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
285
00:50.09
2. TashiroMiraki
214
00:51.08
3. 강일출
166
01:02.56
4. Mark M.
106
01:02.75
5. sfumato
165
01:02.97
6. gtkrouwel
112
01:06.73
7. mtanzer
140
01:08.67
8. Thomas Garner
159
01:10.08
9. dxjonas
118
01:13.39
10. Klunk
24
01:14.19
AO5
1. numbrr
285
00:53.75
2. TashiroMiraki
214
00:53.76
3. Mark M.
106
01:05.59
4. 강일출
166
01:07.85
5. mtanzer
140
01:09.99
6. gtkrouwel
112
01:10.53
7. Thomas Garner
159
01:12.16
8. Klunk
24
01:15.24
9. dxjonas
118
01:16.00
10. summernight
202
01:17.11
AO12
1. numbrr
285
01:10.81
2. TashiroMiraki
214
01:11.46
3. gtkrouwel
112
01:15.93
4. Thomas Garner
159
01:23.14
5. 강일출
166
01:24.51
6. Mark M.
106
01:25.52
7. mtanzer
140
01:26.99
8. dxjonas
118
01:29.41
9. qqwref
259
01:37.81
10. Moooon
107
01:38.40
Robots / programmatic solversinfo  
1.tlstyer
106
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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2025-03-28 16:07:18

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