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. gtkrouwel
117
00:53.35
2. TomGuo
145
00:55.80
3. tt1029
90
00:59.36
4. PickleCat
35
01:01.53
5. ykykpyk 01:05.67
6. mmyama
77
01:05.81
7. Mayrink 01:10.76
8. katrin0000 01:12.07
9. Kimseunghyeon 01:15.20
10. Theck
24
01:15.49
11. Hachiman 01:17.36
12. Freakazoyd
65
01:17.42
13. Inf3rnal3s
29
01:20.76
14. Billo93 01:20.88
15. fugglydo 01:23.08
16. Hesper
65
01:30.20
17. Candyman 01:35.48
18. sue
41
01:35.83
19. nbapip 01:37.81
20. Polaris.
13
01:38.26
This Week
1. TomGuo
145
01:02.04
2. Mayrink 01:10.76
3. tt1029
90
01:13.08
4. Kimseunghyeon 01:24.63
5. sue
41
01:35.83
6. fimcg 01:43.96
7. durugyakos 01:54.31
8. Thrillhou 01:55.95
9. 윤슬
28
02:01.89
10. nbapip 02:02.91
11. dnfh1 02:03.93
12. Hashibrown 02:05.36
13. Dorice
242
02:08.48
14. HackMan
105
02:12.84
15. TQ-V85Sn
85
02:23.32
16. crema
167
02:23.87
17. mopon 02:26.06
18. KaiFunaba 02:31.17
19. hiptopoker 02:38.67
20. AzuReVaPouR 02:39.29
Today
1. TomGuo
145
01:04.35
2. tt1029
90
01:14.42
3. dnfh1 02:03.93
4. Dorice
242
02:08.48
5. crema
167
02:23.87
6. hiptopoker 02:38.67
7. sue
41
02:44.88
8. mopon 02:48.95
9. AzuReVaPouR 03:14.37
10. lilyoooo
21
03:18.44
11. Liza94You 03:22.49
12. CrlD
114
03:48.17
13. HackMan
105
03:59.24
14. Tezexlo
58
05:12.34
15. randomflyintaco
107
05:16.50
16. Gigiw
48
08:47.72
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. numbrr
297
00:50.09
2. TashiroMiraki
215
00:51.08
3. 강일출
166
01:02.56
4. Mark M.
110
01:02.66
5. sfumato
166
01:02.97
6. gtkrouwel
117
01:05.10
7. mtanzer
140
01:08.67
8. Thomas Garner
164
01:10.08
9. dxjonas
127
01:13.39
10. Klunk
24
01:14.19
AO5
1. numbrr
297
00:53.75
2. TashiroMiraki
215
00:53.76
3. Mark M.
110
01:05.59
4. 강일출
166
01:07.85
5. gtkrouwel
117
01:08.46
6. mtanzer
140
01:09.99
7. Thomas Garner
164
01:12.16
8. Klunk
24
01:15.24
9. dxjonas
127
01:16.00
10. summernight
209
01:17.11
AO12
1. numbrr
297
01:10.81
2. TashiroMiraki
215
01:11.46
3. gtkrouwel
117
01:14.83
4. Thomas Garner
164
01:23.14
5. 강일출
166
01:24.51
6. Mark M.
110
01:25.52
7. mtanzer
140
01:26.99
8. dxjonas
127
01:29.41
9. Yeti
116
01:34.48
10. Moooon
111
01:35.35
Robots / programmatic solversinfo  
1.tlstyer
120
00:00.014
2.hum@b0t
91
00:00.169
3.preciousmouse
69
00:01.075

* 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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2025-06-30 23:01:19

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