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. Arok
107
00:01.77
2. Geras
81
00:02.31
3. DarkChamp 00:02.62
4. Evannnnnn 00:02.72
5. Alyname
36
00:02.73
5. zy von
22
00:02.73
7. Kimseunghyeon 00:02.86
8. Goomy
92
00:02.87
9. mmyama
72
00:03.21
10. 楚晗
4
00:03.39
11. ConquerorLu
5
00:03.54
12. Freakazoyd
58
00:03.60
13. DJdeMaster
38
00:03.68
14. Galaxy21
27
00:03.72
15. 2021zhao07
13
00:03.79
16. Osypi
4
00:03.84
17. Pablo The Penguin
13
00:03.85
18. wangzimoxx
15
00:03.88
19. tufelix367
39
00:03.91
20. Piroska9
59
00:03.92
This Week
1. Evannnnnn 00:02.72
2. Freakazoyd
58
00:03.60
3. DJdeMaster
38
00:03.68
4. 2021zhao07
13
00:03.79
5. tufelix367
39
00:03.91
6. Piroska9
59
00:03.92
7. KingRose 00:04.26
8. wyq97 00:04.59
8. MrMythicorn
102
00:04.59
10. Stretch 00:05.17
11. AlienTheAllen
4
00:05.25
12. Dorice
236
00:05.33
13. CipherStar
25
00:05.38
14. FunAcroFly
42
00:06.17
15. Kcirderf 00:06.57
16. 2333tracy 00:06.61
17. erfeng111
6
00:06.81
18. pipifax 00:07.07
19. table
2
00:07.11
19. paupau 00:07.11
Today
1. Freakazoyd
58
00:04.18
2. Pissumurone 00:07.27
3. 0jacky0
15
00:07.89
4. LSQUAREDMATH
26
00:09.00
5. RavenSandcastle 00:11.57
6. Taco1717
20
00:13.40
7. Moos17
16
00:17.45
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. jaybrainer
222
00:01.83
2. numbrr
285
00:02.18
3. vowels
214
00:02.19
4. Arok
107
00:02.20
5. sfumato
165
00:02.50
5. mtanzer
140
00:02.50
7. BingBongBob
107
00:02.53
8. qqwref
259
00:02.55
9. SkyBean1201
84
00:02.59
10. dkxxznxxx
25
00:02.61
AO5
1. jaybrainer
222
00:01.97
2. numbrr
285
00:02.28
3. vowels
214
00:02.33
4. Arok
107
00:02.36
5. Douglas Shamlin Jr.
678
00:02.58
6. SkyBean1201
84
00:02.61
7. mtanzer
140
00:02.63
8. sauceguardian
95
00:02.67
9. boru
102
00:02.68
10. sfumato
165
00:02.73
AO12
1. jaybrainer
222
00:02.49
2. vowels
214
00:02.67
3. numbrr
285
00:02.71
4. Arok
107
00:02.90
5. Douglas Shamlin Jr.
678
00:03.00
6. mtanzer
140
00:03.09
7. sfumato
165
00:03.16
8. sauceguardian
95
00:03.18
9. TashiroMiraki
214
00:03.27
10. qqwref
259
00:03.28
Robots / programmatic solversinfo  
1.tlstyer
106
00:00.006
2.hum@b0t
91
00:00.158
3.penguain
57
00:00.676

* 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 15:56:21

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