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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 17
Times solved 18
Hitori №302893
x1
2022-01-18 18:00
00:10
1 14%
5x5
6
Likes 19 Dislikes 1
Times solved 21
Hitori №300750
x2
2022-01-12 23:01
02:59
2 50%
19x19
48
Likes 16 Dislikes 1
Times solved 18
Hitori №295684
x1
2022-01-18 22:59
01:25
1 28%
14x14
37
Likes 16 Dislikes 2
Times solved 22
Hitori №306330
x3
2022-01-18 03:41
07:26
2 49%
24x24
80
Likes 13
Times solved 17
Hitori №304572
x1
2022-01-08 18:00
01:16
1 23%
14x14
30
Likes 10 Dislikes 2
Times solved 13
Hitori №302236
x1
2022-01-24 12:00
00:19
1 10%
6x6
9
Likes 16
Times solved 17
Hitori №323302
x1
2021-12-31 12:00
00:44
2 37%
9x9
22
Likes 22 Dislikes 2
Times solved 27
Hitori №301382
x1
2021-12-29 06:42
00:23
1 24%
7x7
13
Likes 14 Dislikes 3
Times solved 19
Hitori №300876
x1
2022-01-17 12:00
00:08
1 10%
5x5
6
Likes 33
Times solved 37
Hitori №301873
x1
2021-12-16 21:03
00:17
1 21%
6x6
10
Likes 30 Dislikes 3
Times solved 38
Hitori №317558
x1
2021-12-21 12:00
00:06
1 16%
4x4
5
Likes 18
Times solved 19
Hitori №298445
x1
2021-12-21 09:53
00:20
1 19%
6x6
10
Likes 32 Dislikes 4
Times solved 39
Hitori №277001
x1
2021-12-18 09:02
00:06
1 11%
4x4
5
Likes 29 Dislikes 3
Times solved 34
Hitori №300149
x1
2021-12-21 09:54
00:06
1 18%
4x4
5
Likes 13
Times solved 16
Hitori №306145
x1
2021-12-19 09:22
00:42
1 27%
10x10
23
Likes 13
Times solved 15
Hitori №301014
x1
2021-12-18 18:00
00:51
1 31%
10x10
24
Likes 13
Times solved 18
Hitori №312526
x2
2021-12-14 18:37
01:39
1 29%
16x16
41
Likes 16 Dislikes 1
Times solved 20
Hitori №315170
x1
2021-12-14 22:14
01:18
1 24%
15x15
34
Likes 23
Times solved 25
Hitori №312500
x1
2021-11-17 21:30
01:02
2 35%
10x10
23
Likes 34 Dislikes 4
Times solved 41
Hitori №303438
x1
2021-11-10 21:32
00:05
1 15%
4x4
4
Likes 14
Times solved 16
Hitori №304417
x1
2021-10-27 21:04
00:54
1 29%
10x10
25
Likes 13
Times solved 15
Hitori №305040
x1
2021-10-27 21:30
01:07
1 27%
10x10
27
Likes 33 Dislikes 2
Times solved 40
Hitori №300925
x1
2021-10-13 21:18
00:06
1 14%
4x4
4
Likes 33 Dislikes 3
Times solved 39
Hitori №300840
x1
2021-10-13 21:28
00:06
1 9%
4x4
5
Likes 30 Dislikes 3
Times solved 39
Hitori №301067
x1
2021-10-13 21:08
00:09
1 16%
4x4
5
Likes 31 Dislikes 2
Times solved 36
Hitori №302062
x1
2021-10-06 18:00
00:07
1 15%
4x4
5
Likes 30 Dislikes 2
Times solved 39
Hitori №304833
x1
2021-09-29 21:08
00:05
1 16%
4x4
4
Likes 33 Dislikes 3
Times solved 42
Hitori №299860
x1
2021-09-29 21:18
00:06
1 12%
4x4
5
Likes 12
Times solved 13
Hitori №302451
x1
2021-10-20 21:26
01:10
2 36%
10x10
22
Likes 32 Dislikes 3
Times solved 41
Hitori №283366
x1
2021-09-13 12:00
00:05
1 12%
4x4
4
Likes 27 Dislikes 2
Times solved 35
Hitori №296573
x1
2021-09-01 20:00
00:09
1 14%
4x4
5
Likes 15
Times solved 19
Hitori №315577
x2
2022-01-15 18:21
04:05
1 31%
21x21
62
Likes 18 Dislikes 1
Times solved 20
Hitori №300698
x2
2022-01-12 19:41
02:16
2 46%
18x18
41
Likes 31 Dislikes 2
Times solved 42
Hitori №273317
x1
2021-05-05 17:07
00:06
1 12%
4x4
5
Likes 21 Dislikes 1
Times solved 27
Hitori №320513
x1
2021-12-31 05:01
00:54
1 27%
9x9
21
Likes 7
Times solved 11
Hitori №277879
x2
2022-01-10 12:00
03:25
3 67%
21x21
64

Missions

Mission "Hitori - the Twelve chairs"

2019-04-09   Lysva   Stages10
T24 B4 S8 G23

Mission "Sapphire Hitori"

2019-05-24   Bruno   Stages65
T24 B2 S2 G17

Mission "Hitori Pure Emerald"

2019-05-21   Bruno   Stages60
T13 B3 S1 G17
:)
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