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. Kimseunghyeon 00:06.38
2. mmyama
72
00:08.38
3. 2021zhao07
13
00:08.76
4. puzzlingpatzer
77
00:14.51
5. Pissumurone 00:15.30
6. wyq97 00:19.12
7. Dorice
236
00:19.76
8. 3328037
31
00:30.51
9. 漫山星火
15
00:31.21
10. Theck
13
00:33.60
11. AnonyMinor
44
00:33.85
12. Makinoz 01:01.68
13. shingenx 01:02.74
14. maruda
10
01:16.91
15. FunAcroFly
42
01:34.51
16. Aayush
1
09:35.24
17. Rendolf
20
11:01.25
18. BeautifulBeagle 6d 00:32:43.65
19.--- empty -----:--
20.--- empty -----:--
This Week
1. 2021zhao07
13
00:08.76
2. puzzlingpatzer
77
00:14.51
3. Pissumurone 00:15.30
4. wyq97 00:19.12
5. FunAcroFly
42
01:34.51
6. BeautifulBeagle 6d 00:32:43.65
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
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Today
1. puzzlingpatzer
77
00:14.51
2. Pissumurone 00:15.86
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
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MO3
1. numbrr
285
00:06.50
2. mtanzer
140
00:07.85
3. sfumato
165
00:08.86
4. TashiroMiraki
214
00:09.14
5. Oryn
148
00:09.76
6. jaybrainer
222
00:09.79
7. summernight
202
00:10.20
8. 飞飞
48
00:10.62
9. Nick
217
00:10.71
10. mmyama
72
00:11.17
AO5
1. numbrr
285
00:06.59
2. mtanzer
140
00:08.33
3. TashiroMiraki
214
00:08.83
4. Oryn
148
00:09.98
5. jaybrainer
222
00:10.30
6. 飞飞
48
00:10.62
7. sfumato
165
00:11.16
8. summernight
202
00:11.67
9. qqwref
259
00:11.75
10. Nick
217
00:12.38
AO12
1. numbrr
285
00:08.70
2. mtanzer
140
00:10.60
3. TashiroMiraki
214
00:11.63
4. summernight
202
00:14.51
5. 2015YINJ02
148
00:15.17
6. sfumato
165
00:15.19
7. qqwref
259
00:16.68
8. Oryn
148
00:17.33
9. Nick
217
00:17.69
10. jaybrainer
222
00:18.07
Robots / programmatic solversinfo  
1.tlstyer
106
00:00.007
2.hum@b0t
91
00:00.161
3.quartzpiece
1
02:01.336

* 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 15:55:41

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