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. Oryn
155
00:07.55
2. LemonSherbet 00:07.84
3. niqnna
18
00:10.54
4. mmyama
78
00:10.65
5. Parade
40
00:11.72
6. iti119 00:11.98
7. nerdvert
92
00:11.99
8. Dorice
248
00:12.54
9. syucream
107
00:13.45
10. SWICT
35
00:16.15
11. whitevoidsky
24
00:16.61
12. Nhật Vũ Minh
20
00:18.54
13. FunAcroFly
94
00:20.72
14. Goochelaar
105
00:22.41
15. fishysua
148
00:22.62
16. thrasymachus
34
00:24.76
17. EG0hun 00:25.36
18. Solander
62
00:25.86
19. randomflyintaco
121
00:27.01
20. slyguy519
55
00:27.58
This Week
1. niqnna
18
00:10.54
2. nerdvert
92
00:13.35
3. FunAcroFly
94
00:20.72
4. Goochelaar
105
00:23.96
5. EG0hun 00:25.36
6. Solander
62
00:25.86
7.--- empty -----:--
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 -----:--
Today
1. niqnna
18
00:13.93
2. FunAcroFly
94
00:20.72
3. EG0hun 00:27.00
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
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
300
00:04.90
2. Arok
113
00:05.94
3. mtanzer
140
00:06.82
4. sfumato
166
00:06.86
5. jaybrainer
240
00:07.06
6. Oryn
155
00:07.13
7. TashiroMiraki
216
00:07.30
8. Douglas Shamlin Jr.
709
00:08.36
9. 2015YINJ02
161
00:08.44
10. mmyama
78
00:08.45
AO5
1. numbrr
300
00:05.44
2. Arok
113
00:06.82
3. mtanzer
140
00:07.17
4. sfumato
166
00:07.60
5. Oryn
155
00:08.02
6. TashiroMiraki
216
00:08.17
7. jaybrainer
240
00:08.33
8. qqwref
260
00:08.60
9. 2015YINJ02
161
00:08.69
10. tantanaaa
78
00:08.71
AO12
1. numbrr
300
00:07.92
2. TashiroMiraki
216
00:08.76
3. mtanzer
140
00:09.04
4. Oryn
155
00:09.48
5. sfumato
166
00:09.69
6. qqwref
260
00:10.55
7. Arok
113
00:10.68
8. jaybrainer
240
00:11.03
9. tantanaaa
78
00:11.12
10. summernight
215
00:11.67
Robots / programmatic solversinfo  
1.tlstyer
128
00:00.007
2.cheyette00:00.160
3.hum@b0t
91
00:00.162

* 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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2025-09-18 16:48:59

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