Hitori


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Hitori is a logic puzzle with simple rules and challenging solutions.

The rules of Hitori are simple:
You have to shade some of the cells of the grid according to the rules:
- No number should appear unshaded more than once in a row or a column.
- 2 black cells cannot be adjacent horizontally or vertically.
- All non-shaded cells should be connected in a single group by vertical or horizontal motion.

Video Tutorial
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Hitori


5x5 Easy Hitori | 5x5 Normal Hitori | 5x5 Hard Hitori | 10x10 Easy Hitori | 10x10 Normal Hitori | 10x10 Hard Hitori | 15x15 Easy Hitori | 15x15 Normal Hitori | 15x15 Hard Hitori | 20x20 Easy Hitori | 20x20 Normal Hitori | 20x20 Hard Hitori

New Puzzle
This Month
1.thall
67
 00:05.40
2.Puzzleist
119
 00:07.22
3.Dorice
277
 00:07.33
4.paopumoon 00:07.67
5.Oryn
202
 00:08.34
6.crema
280
 00:08.82
7.Szysiu123
20
 00:08.92
8.FastFreddy
36
 00:08.97
9.spen sp2
72
 00:09.59
10.floomsi
27
 00:10.11
11.franxfsk 00:11.13
12.Matthew Zimmer
49
 00:11.58
13.gravitywind
82
 00:12.30
14.kennethaw88
167
 00:12.37
15.dayoff 00:13.20
16.oversizedpixie
139
 00:13.34
17.dheodbgrr 00:13.89
18.Dimitri013
32
 00:14.79
19.xnarushix
2
 00:14.92
20.florisdeporis
26
 00:15.23
This Week
1.thall
67
 00:05.40
2.Oryn
202
 00:08.34
3.Dorice
277
 00:08.98
4.floomsi
27
 00:12.79
5.dayoff 00:15.94
6.3099706188
8
 00:26.10
7.grimmgirlfandom
176
 00:27.26
8.A3ngus
18
 00:28.61
9.DodgyRogd1 00:31.16
10.1XMvv 00:32.67
11.felisium
20
 00:42.79
12.Manuel2 01:01.90
13.foreverwyw
2
 01:24.66
14.FrostyEagle
70
 24d 20:31:23.64
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Today
1.Oryn
202
 00:08.34
2.DodgyRogd1 00:31.16
3.felisium
20
 00:42.79
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MO3
1.nabi
92
 00:02.56
2.vowels
216
 00:02.65
3.BingBongBob
108
 00:03.23
4.numbrr
331
 00:03.38
5.jai22933
23
 00:03.44
6.ChillMinnow
14
 00:03.50
6.JZE
88
 00:03.50
8.ChillGorge
5
 00:03.53
9.CivicGoose
2
 00:03.66
10.jaybrainer
289
 00:04.10
AO5
1.nabi
92
 00:02.76
2.vowels
216
 00:02.87
3.BingBongBob
108
 00:03.43
4.ChillGorge
5
 00:03.55
5.numbrr
331
 00:03.60
6.ChillMinnow
14
 00:03.63
7.CivicGoose
2
 00:03.72
8.jai22933
23
 00:03.75
9.jaybrainer
289
 00:04.23
10.JZE
88
 00:04.43
AO12
1.nabi
92
 00:02.96
2.vowels
216
 00:03.32
3.BingBongBob
108
 00:03.94
4.jai22933
23
 00:04.04
5.CivicGoose
2
 00:04.09
6.ChillGorge
5
 00:04.17
7.numbrr
331
 00:04.55
8.jaybrainer
289
 00:04.95
9.Douglas Shamlin Jr.
725
 00:05.00
10.qqwref
266
 00:05.64
Robots / programmatic solversinfo  
1.dbut2
58
00:00.003
2.tlstyer
160
00:00.006
3.jllachan00:00.493

* 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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