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. zach777
28
00:02.31
1. wangzimoxx
15
00:02.31
3. Polaris.
8
00:02.78
4. Kimseunghyeon 00:02.84
5. Evannnnnn 00:02.97
6. boru
102
00:03.06
7. SHMETROreciter
7
00:03.19
8. FeatherlessChkn
4
00:03.26
9. Thrillhou 00:03.41
10. SirFish 00:03.47
11. mmyama
74
00:03.51
12. tufelix367
49
00:03.54
13. Syfirry
6
00:03.55
14. loki515
24
00:03.58
15. Hwellyn
67
00:03.70
16. pipifax 00:03.72
17. Xap
10
00:03.80
18. 2021zhao07
17
00:03.89
19. DarkChamp 00:03.90
20. Joker8738
4
00:03.92
This Week
1. Polaris.
8
00:02.78
2. Kimseunghyeon 00:03.08
3. Evannnnnn 00:03.09
4. Hwellyn
67
00:03.70
5. DarkChamp 00:03.90
6. Joker8738
4
00:03.92
7. Piroska9
61
00:04.15
8. vilodi
77
00:04.51
9. hizi
11
00:05.04
10. KarasuKarasu 00:05.06
11. ztsaizs 00:05.35
12. pipifax 00:07.96
13. HackMan
98
00:08.19
14. dynesonne 00:08.86
15. LSQUAREDMATH
26
00:09.30
16. 谜题杀手
45
00:09.32
17. Dorice
238
00:09.36
18. Leo19 00:09.84
19. jjsw0204
8
00:10.06
20. ShaneTheSloth
6
00:11.08
Today
1. jjsw0204
8
00:10.06
2. LSQUAREDMATH
26
00:10.65
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MO3
1. jaybrainer
226
00:01.83
2. numbrr
289
00:02.18
3. vowels
214
00:02.19
4. Arok
108
00:02.20
5. sfumato
166
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
31
00:02.61
AO5
1. jaybrainer
226
00:01.97
2. numbrr
289
00:02.28
3. vowels
214
00:02.33
4. Arok
108
00:02.36
5. Douglas Shamlin Jr.
685
00:02.58
6. sfumato
166
00:02.59
7. SkyBean1201
84
00:02.61
8. mtanzer
140
00:02.63
9. sauceguardian
95
00:02.67
10. boru
102
00:02.68
AO12
1. jaybrainer
226
00:02.49
2. vowels
214
00:02.67
3. numbrr
289
00:02.71
4. Arok
108
00:02.90
5. sfumato
166
00:02.98
6. Douglas Shamlin Jr.
685
00:03.00
7. mtanzer
140
00:03.09
8. sauceguardian
95
00:03.18
9. TashiroMiraki
214
00:03.27
10. qqwref
259
00:03.28
Robots / programmatic solversinfo  
1.tlstyer
109
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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2025-05-01 03:57:24

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