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. COlDAiR
43
00:02.50
2. Lianabgette
15
00:02.87
3. oshi
23
00:02.95
4. Kimseunghyeon 00:03.09
5. Mauser 00:03.13
6. JZE
49
00:03.27
7. sauceguardian
94
00:03.38
8. Piroska9
56
00:03.39
9. zhaooh 00:03.42
10. rozer
199
00:03.56
11. Royyyyyyy 00:03.68
12. sunday_daze
50
00:03.74
13. LukasMo
63
00:03.82
14. mmyama
65
00:03.83
15. TomGuo
139
00:03.91
16. Jerz00 00:04.12
17. Sbeimttt 00:04.35
18. Thrillhou 00:04.48
18. giotskh
144
00:04.48
20. Dorice
229
00:04.51
This Week
1. COlDAiR
43
00:02.50
2. zhaooh 00:03.42
3. Kimseunghyeon 00:03.43
4. Piroska9
56
00:03.56
5. Royyyyyyy 00:03.68
6. Jerz00 00:04.12
7. mmyama
65
00:04.30
8. Thrillhou 00:04.48
8. giotskh
144
00:04.48
10. ElsieZ
58
00:04.85
11. 31415926 00:05.17
12. sue
24
00:05.41
13. dtyamada
91
00:05.81
14. Fabiogaudo
7
00:05.83
15. EC31
23
00:05.84
16. NeroHYU
87
00:06.01
17. 蓝色•鲸鱼
5
00:06.21
18. solo女歌手陈卓...
19
00:06.26
19. pipifax 00:06.71
20. WilsonDoong
30
00:07.40
Today
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MO3
1. jaybrainer
212
00:01.83
2. vowels
214
00:02.19
3. Arok
105
00:02.20
4. numbrr
274
00:02.26
5. sfumato
164
00:02.50
5. mtanzer
140
00:02.50
7. BingBongBob
107
00:02.53
8. qqwref
259
00:02.55
9. SkyBean1201
70
00:02.59
10. dkxxznxxx
25
00:02.61
AO5
1. jaybrainer
212
00:01.97
2. vowels
214
00:02.33
3. numbrr
274
00:02.36
3. Arok
105
00:02.36
5. Douglas Shamlin Jr.
666
00:02.58
6. SkyBean1201
70
00:02.61
7. mtanzer
140
00:02.63
8. sauceguardian
94
00:02.67
9. boru
101
00:02.68
10. sfumato
164
00:02.73
AO12
1. jaybrainer
212
00:02.49
2. vowels
214
00:02.67
3. numbrr
274
00:02.82
4. Arok
105
00:02.90
5. Douglas Shamlin Jr.
666
00:03.00
6. mtanzer
140
00:03.09
7. sfumato
164
00:03.16
8. sauceguardian
94
00:03.18
9. TashiroMiraki
212
00:03.27
10. qqwref
259
00:03.28
Robots / programmatic solversinfo  
1.tlstyer
100
00:00.006
2.penguain
57
00:00.676
3.Sombro6400:07.279

* 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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2025-01-15 02:27:52

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