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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.

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Likes 17 Dislikes 4
Times solved 22
x2
2023-02-08 09:04
08:15
4 74%
12x19
Likes 25 Dislikes 1
Times solved 29
x2
2023-02-07 21:04
02:05
2 44%
12x19
Likes 32 Dislikes 1
Times solved 37
x2
2023-02-07 01:39
01:27
2 42%
12x19
Likes 30
Times solved 35
x2
2023-02-01 02:41
01:02
2 40%
12x19
Likes 22
Times solved 30
x2
2023-02-02 18:37
01:28
1 27%
12x19
Likes 24
Times solved 29
x2
2023-02-03 22:29
00:57
2 32%
12x19
Likes 13
Times solved 21
x2
2023-02-04 22:59
02:00
2 31%
12x19
Likes 15
Times solved 17
x3
2023-02-01 12:00
02:26
2 42%
13x20
Likes 13
Times solved 16
x2
2023-02-01 12:00
01:31
2 42%
12x19
Likes 13
Times solved 16
x3
2023-02-05 03:03
02:33
2 34%
13x20
Likes 23 Dislikes 1
Times solved 31
x2
2023-01-28 18:15
01:11
2 36%
12x19
Likes 20 Dislikes 1
Times solved 27
x2
2023-01-28 22:14
02:00
2 43%
12x19
Likes 25
Times solved 31
x2
2023-01-24 13:41
01:52
2 41%
12x19
Likes 26
Times solved 30
x2
2023-01-20 01:41
04:26
3 54%
12x19
Likes 30 Dislikes 1
Times solved 37
x2
2023-01-19 09:28
01:37
2 35%
12x19
Likes 13
Times solved 18
x2
2023-01-28 18:00
02:50
2 35%
12x19
Likes 24 Dislikes 1
Times solved 29
x2
2023-01-22 10:21
02:44
2 41%
12x19
Likes 18
Times solved 21
x1
2023-01-19 21:08
01:06
1 29%
11x11
Likes 18
Times solved 20
x1
2023-01-19 23:30
00:28
1 13%
11x11
Likes 14 Dislikes 1
Times solved 20
x2
2023-01-31 22:59
02:50
2 48%
12x19
Likes 20 Dislikes 1
Times solved 26
x2
2023-01-21 22:59
01:32
2 34%
12x19
Likes 15
Times solved 18
x1
2023-01-19 21:32
01:57
2 31%
11x11
Likes 30
Times solved 39
x1
2023-01-09 21:40
00:54
1 20%
11x11
Likes 18 Dislikes 1
Times solved 24
x2
2023-01-23 22:59
03:16
2 46%
12x19
Likes 17 Dislikes 1
Times solved 24
x1
2023-01-19 21:16
01:04
1 23%
11x11
Likes 27
Times solved 34
x1
2023-01-09 21:24
01:02
1 22%
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 25
Times solved 31
x1
2023-01-09 21:32
00:44
2 34%
9x9
Likes 15
Times solved 20
x2
2023-01-14 18:00
05:25
3 54%
12x19
Likes 21
Times solved 27
x1
2023-01-09 21:16
01:07
1 22%
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 17 Dislikes 1
Times solved 23
x2
2023-01-11 18:56
02:52
2 48%
12x19
Likes 16 Dislikes 1
Times solved 23
x2
2023-01-17 07:00
02:28
2 41%
12x19
Likes 23
Times solved 30
x1
2023-01-06 21:14
00:52
1 25%
11x11
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