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. gtkrouwel
116
00:41.38
2. TomGuo
145
00:58.37
3. Kimseunghyeon 01:03.87
4. Totoro1997
1
01:11.71
5. PickleCat
31
01:14.53
6. crema
162
01:23.92
7. Theck
24
01:26.18
8. Kukko
122
01:35.37
9. HackMan
104
01:49.66
10. Emgold 01:54.44
11. zyffr
20
01:58.60
12. applepi 02:12.08
13. grimmgirlfandom
149
02:15.22
14. Praktisix
93
02:33.76
15. S Otenkiya
45
02:36.84
16. hiptopoker 02:47.27
17. AgnieszkaNesa
94
03:09.77
18. lilyoooo
19
03:17.09
19. chiimo 03:20.62
20. Thun
49
03:42.40
This Week
1. TomGuo
145
00:58.37
2. Kimseunghyeon 01:03.87
3. Totoro1997
1
01:11.71
4. PickleCat
31
01:14.53
5. Theck
24
01:26.18
6. applepi 02:12.08
7. HackMan
104
02:21.20
8. chiimo 03:20.62
9. ambiorix 05:18.38
10. chirodex 07:04.51
11. kkchan
19
07:11.20
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Today
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MO3
1. numbrr
295
00:46.10
2. TashiroMiraki
215
00:47.55
3. gtkrouwel
116
00:53.61
4. sfumato
166
01:01.21
5. qqwref
259
01:05.62
6. Yeti
116
01:06.28
7. Nick
217
01:07.31
8. mtanzer
140
01:10.95
9. summernight
209
01:12.70
10. mmyama
77
01:13.09
AO5
1. numbrr
295
00:46.10
2. TashiroMiraki
215
00:51.06
3. gtkrouwel
116
00:57.28
4. Yeti
116
01:07.43
5. sfumato
166
01:08.37
6. mtanzer
140
01:11.61
7. qqwref
259
01:13.56
8. summernight
209
01:14.94
9. Oryn
148
01:16.78
10. 2015YINJ02
148
01:20.51
AO12
1. numbrr
295
00:55.85
2. TashiroMiraki
215
00:56.88
3. gtkrouwel
116
01:04.99
4. summernight
209
01:19.65
5. qqwref
259
01:23.77
6. Oryn
148
01:24.66
7. mtanzer
140
01:25.21
8. Yeti
116
01:31.17
9. sfumato
166
01:32.17
10. z9z9z9z9z9
81
01:39.06
Robots / programmatic solversinfo  
1.tlstyer
118
00:00.011
2.hum@b0t
91
00:00.163
3.cheyette00:02.504

* 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 08:58:47

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