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The "Light Up" puzzle (also known as "Akari", "LightUP" and "lanterns") is a rectangular box in which some cells are white, and some are black. The black cells can contain numbers from 0 to 4. The goal of the puzzle is to place light bulbs in empty cells so that all white cells are illuminated.

The light from the bulb is distributed in a straight line horizontally and vertically until you hit a black cell or the border of the field. Bulbs should not face each other. If there is a number in a black cell, then it must be adjacent (on the left, top, right or bottom) to a specified number of bulbs, no more and no less.

Suitable for smartphones
Likes 9
Times solved 11
x3
2023-02-01 12:00
02:23
2 46%
13x20
Likes 9
Times solved 11
x2
2023-02-01 12:00
01:33
2 43%
12x19
Likes 26
Times solved 27
x2
2023-02-01 02:41
01:08
2 42%
12x19
Likes 11 Dislikes 1
Times solved 15
x2
2023-01-31 22:59
02:50
3 56%
12x19
Likes 22 Dislikes 1
Times solved 29
x2
2023-01-28 18:15
01:11
2 37%
12x19
Likes 19 Dislikes 1
Times solved 24
x2
2023-01-28 22:14
01:58
2 42%
12x19
Likes 30 Dislikes 1
Times solved 37
x2
2023-01-19 09:28
01:37
2 35%
12x19
Likes 24
Times solved 30
x2
2023-01-24 13:41
01:52
2 42%
12x19
Likes 24
Times solved 26
x2
2023-01-20 01:41
04:07
3 56%
12x19
Likes 11
Times solved 15
x2
2023-01-28 18:00
03:02
2 38%
12x19
Likes 18
Times solved 21
x1
2023-01-19 21:08
01:06
1 29%
11x11
Likes 23 Dislikes 1
Times solved 28
x2
2023-01-22 10:21
02:48
2 42%
12x19
Likes 17
Times solved 19
x1
2023-01-19 23:30
00:27
1 14%
11x11
Likes 15
Times solved 18
x1
2023-01-19 21:32
01:57
2 31%
11x11
Likes 19 Dislikes 1
Times solved 25
x2
2023-01-21 22:59
01:32
2 35%
12x19
Likes 17 Dislikes 1
Times solved 24
x1
2023-01-19 21:16
01:04
1 23%
11x11
Likes 17 Dislikes 1
Times solved 23
x2
2023-01-23 22:59
03:44
2 48%
12x19
Likes 29
Times solved 38
x1
2023-01-09 21:40
00:56
1 20%
11x11
Likes 16 Dislikes 1
Times solved 21
x1
2023-01-19 21:24
01:11
2 31%
11x11
Likes 15 Dislikes 1
Times solved 21
x1
2023-01-19 21:40
01:13
1 22%
11x11
Likes 26
Times solved 33
x1
2023-01-09 21:24
01:07
1 23%
11x11
Likes 23
Times solved 29
x1
2023-01-09 21:32
00:44
2 33%
9x9
Likes 14
Times solved 18
x2
2023-01-14 18:00
04:40
3 57%
12x19
Likes 21
Times solved 28
x1
2023-01-06 21:14
00:52
1 28%
11x11
Likes 21
Times solved 28
x1
2023-01-09 21:08
01:26
1 28%
11x11
Likes 17 Dislikes 1
Times solved 26
x2
2023-01-16 18:00
01:12
1 30%
12x19
Likes 17 Dislikes 1
Times solved 25
x2
2023-01-16 18:00
01:09
2 32%
12x19
Likes 20
Times solved 26
x1
2023-01-09 21:16
01:07
1 23%
11x11
Likes 16 Dislikes 1
Times solved 23
x2
2023-01-17 07:00
02:28
2 41%
12x19
Likes 23 Dislikes 1
Times solved 30
x2
2023-01-06 22:14
02:16
2 44%
12x19
Likes 16
Times solved 23
x1
2023-01-06 21:24
01:34
1 18%
11x11
Likes 15
Times solved 20
x1
2023-01-06 21:08
01:00
1 16%
11x11
Likes 23 Dislikes 1
Times solved 32
x1
2023-01-03 18:56
00:43
1 15%
11x11
Likes 15 Dislikes 1
Times solved 21
x2
2023-01-11 18:56
03:10
3 52%
12x19
Likes 19 Dislikes 2
Times solved 26
x2
2023-01-07 18:00
01:27
2 34%
12x19
Likes 12 Dislikes 1
Times solved 18
x1
2023-01-06 21:29
02:38
2 36%
11x11
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