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Hitori is a numerical puzzle created in Japan. Hitori is a 3x3 to 25x25 square field with each cell filled with either a number or a letter. No row or column can have more than one occurrence of any given number. The goal is to find the numbers that have been placed incorrectly and mark them black.

The black cells must to touch either horizontally or vertically, but there can be diagonally adjacent black cells. The cells that remain blank have to touch others, as well as any of the surfaces, and create a single area.

A left mouse click can be used to mark cells black. The cells that duplicate and, therefore, were filled incorrectly are highlighted red. The red color for duplicates in a single row is brighter than the one for duplicates in the same column. The right click can also be used to mark the cells that are most likely not to be black. However, this mark is only supplementary and does not affect the solution check.

To check whether Hitori has been solved correctly, please click the corresponding button. Mistakes are marked in red, whereas the pink color shows the isolated areas. The number of black cells must not exceed the one specified in the problem; otherwise, the check button will become inactive.

Suitable for smartphones
Likes 1
Times solved 1
x1
2022-12-03 18:00
04:52
1 0%
10x10
24
Likes 35 Dislikes 1
Times solved 40
x2
2022-11-30 14:40
03:36
2 34%
19x19
44
Likes 35 Dislikes 1
Times solved 38
x2
2022-11-30 17:20
02:30
1 24%
16x16
42
Likes 21
Times solved 23
x1
2022-11-30 06:21
00:21
1 22%
7x7
14
Likes 16
Times solved 17
x2
2022-11-27 22:29
04:45
2 37%
20x20
57
Likes 19 Dislikes 1
Times solved 21
x1
2022-11-30 22:59
00:19
1 12%
6x6
9
Likes 26
Times solved 28
x1
2022-11-19 14:21
01:11
1 25%
9x9
22
Likes 11
Times solved 12
x2
2022-11-26 18:21
03:43
1 16%
20x20
58
Likes 10
Times solved 10
x1
2022-12-01 12:00
00:20
1 18%
7x7
13
Likes 15
Times solved 18
x2
2022-11-24 22:29
03:02
1 16%
19x19
46
Likes 33 Dislikes 1
Times solved 36
x1
2022-11-12 09:01
00:18
1 17%
6x6
9
Likes 28
Times solved 28
x1
2022-11-12 14:21
00:55
1 21%
9x9
23
Likes 38 Dislikes 1
Times solved 44
x1
2022-11-08 02:59
00:20
1 14%
6x6
11
Likes 28 Dislikes 1
Times solved 30
x2
2022-11-12 21:01
02:41
1 24%
17x17
47
Likes 12
Times solved 13
x2
2022-11-23 22:00
02:41
1 10%
18x18
44
Likes 38 Dislikes 1
Times solved 42
x1
2022-11-10 16:48
00:12
1 15%
5x5
8
Likes 39 Dislikes 1
Times solved 41
x1
2022-11-09 01:55
00:10
1 10%
5x5
7
Likes 20
Times solved 21
x3
2022-11-17 22:21
08:51
3 56%
25x25
104
Likes 30 Dislikes 1
Times solved 32
x1
2022-11-10 09:01
00:32
1 13%
8x8
16
Likes 14
Times solved 16
x2
2022-11-17 22:59
02:43
1 25%
16x16
52
Likes 23
Times solved 25
x3
2022-11-11 01:41
06:14
2 38%
23x23
72
Likes 26 Dislikes 1
Times solved 30
x1
2022-11-05 11:01
01:07
1 22%
9x9
23
Likes 32
Times solved 34
x1
2022-11-04 21:19
00:06
1 6%
4x4
4
Likes 26 Dislikes 1
Times solved 28
x2
2022-11-09 21:01
03:37
2 37%
21x21
56
Likes 19
Times solved 22
x1
2022-11-08 22:14
01:05
1 15%
10x10
21
Likes 24 Dislikes 1
Times solved 27
x2
2022-11-11 09:01
04:40
2 40%
22x22
73
Likes 24 Dislikes 1
Times solved 26
x2
2022-11-08 21:01
04:42
2 35%
21x21
70
Likes 23 Dislikes 1
Times solved 25
x1
2022-11-08 17:01
01:47
2 32%
13x13
37
Likes 26
Times solved 28
x1
2022-11-04 21:05
00:24
1 11%
7x7
13
Likes 21 Dislikes 1
Times solved 24
x3
2022-11-11 21:01
06:10
2 45%
23x23
86
Likes 22
Times solved 23
x1
2022-11-04 21:37
00:43
1 19%
9x9
23
Likes 25 Dislikes 1
Times solved 27
x1
2022-11-04 01:41
01:01
1 23%
10x10
23
Likes 25 Dislikes 2
Times solved 28
x1
2022-11-04 21:16
00:17
1 11%
6x6
10
Likes 20 Dislikes 1
Times solved 22
x1
2022-11-04 21:32
00:59
1 14%
9x9
19
Likes 14 Dislikes 1
Times solved 16
x1
2022-11-09 22:29
01:17
1 23%
10x10
22
Likes 18
Times solved 20
x2
2022-11-29 20:21
04:14
2 39%
17x17
49

Missions

Mission "Solve Hitori"

2019-03-23   belyak62   Stages6
T19 B5 S5 G69

Mission "Tricks Hitori"

2019-04-09   Bruno   Stages10
T10 B1 S8 G47

Mission "Hitori - the Twelve chairs"

2019-04-09   Lysva   Stages10
T24 B6 S6 G28
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