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. TheLoneWolf 00:45.38
2. wangzimoxx
15
00:49.24
3. sauceguardian
97
00:52.55
4. TomGuo
145
00:52.95
5. Kimseunghyeon 00:59.37
6. SilverHawk
208
00:59.74
7. Emgold 01:06.57
8. AufdemWege
2
01:09.17
9. sue
38
01:11.72
10. Polaris.
13
01:12.56
11. Kaizer1824#0246
59
01:16.94
12. Fishburger 01:19.08
13. Harry_Canyon
124
01:19.65
14. BernadetteL 01:21.12
15. hkjsf
126
01:23.70
16. qobi
224
01:24.37
17. Emma Branch
18
01:24.72
18. Brian Murphy
107
01:28.14
19. chiimo 01:30.92
20. IdentityV 01:33.78
This Week
1. TheLoneWolf 00:45.38
2. TomGuo
145
00:52.95
3. Kimseunghyeon 00:59.37
4. Emgold 01:06.57
5. sue
38
01:11.72
6. BernadetteL 01:21.12
7. chiimo 01:30.92
8. Fishburger 01:32.45
9. alalanaj 01:48.65
10. applepi 01:52.56
11. pipifax 01:55.95
12. HackMan
104
02:02.16
13. Lua
124
02:03.00
14. Goomy
112
02:08.00
15. paejunk
53
02:26.40
16. PheromoneJones 02:27.45
17. danpuzzler 02:47.37
18. VicCatLady
54
02:48.63
19. Eatinglove 03:11.52
20. KETJAK
27
03:27.58
Today
1. TheLoneWolf 00:46.51
2. Emgold 01:06.57
3. sue
38
01:25.00
4. BernadetteL 01:32.69
5. applepi 01:52.56
6. HackMan
104
02:07.53
7. paejunk
53
02:26.40
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
00:36.81
2. TashiroMiraki
215
00:41.81
3. Sonar
77
00:45.80
3. gtkrouwel
116
00:45.80
5. sfumato
166
00:48.33
6. qqwref
259
00:49.53
7. sauceguardian
97
00:53.17
8. mtanzer
140
00:53.20
9. Brian Murphy
107
00:56.51
10. Nick
217
00:56.70
AO5
1. numbrr
295
00:38.90
2. TashiroMiraki
215
00:42.42
3. Sonar
77
00:47.77
4. gtkrouwel
116
00:48.31
5. sfumato
166
00:49.21
6. qqwref
259
00:53.33
7. sauceguardian
97
00:53.95
8. mtanzer
140
00:54.43
9. Brian Murphy
107
00:59.77
10. vowels
214
01:00.99
AO12
1. numbrr
295
00:42.97
2. TashiroMiraki
215
00:45.90
3. gtkrouwel
116
00:50.83
4. Sonar
77
00:53.12
5. sfumato
166
00:54.44
6. qqwref
259
00:57.59
7. mtanzer
140
00:58.75
8. sauceguardian
97
00:59.72
9. Yeti
116
01:05.14
10. vowels
214
01:06.31
Robots / programmatic solversinfo  
1.tlstyer
117
00:00.009
2.hum@b0t
91
00:00.163
3.cheyette00:05.661

* 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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2025-06-14 20:36:17

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