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.Kukko
191
 00:34.33
2.spen sp2
73
 00:35.89
3.Dorice
277
 00:37.87
4.IzAlexandre2
114
 00:44.57
5.floomsi
27
 00:58.97
6.Truth-or-Peace
140
 00:59.85
7.SA5838 01:01.71
8.nonofun1
44
 01:03.82
9.crema
280
 01:23.74
10.wiiisiii
77
 01:33.74
11.Ernie A.
116
 01:44.17
12.huohuo2004
63
 01:45.72
13.mts55
54
 01:52.86
14.Lokiskind
1
 02:03.13
15.frafrimb 02:05.04
16.junkdrawer 02:29.25
17.보믈고
51
 02:31.09
18.sgychen6
113
 02:31.55
19.xilli 03:05.63
20.hazelmus
28
 03:11.82
This Week
1.IzAlexandre2
114
 00:44.57
2.spen sp2
73
 00:56.10
3.floomsi
27
 01:02.87
4.nonofun1
44
 01:19.61
5.crema
280
 01:23.74
6.xilli 03:05.63
7.DodgyRogd1 04:11.97
8.lepetitgenie 04:52.79
9.lisardinha 12:07.52
10.1XMvv 16:18.07
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Today
1.spen sp2
73
 00:56.10
2.floomsi
27
 01:39.85
3.DodgyRogd1 04:11.97
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
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MO3
1.nabi
92
 00:18.24
2.numbrr
332
 00:18.74
3.vowels
216
 00:18.90
4.BingBongBob
108
 00:22.37
5.Make
288
 00:24.02
6.qqwref
266
 00:24.40
7.jaybrainer
290
 00:25.98
8.jai22933
23
 00:26.58
9.SilverHawk
216
 00:26.59
10.daanbe
244
 00:27.82
AO5
1.nabi
92
 00:19.01
2.vowels
216
 00:20.64
3.numbrr
332
 00:20.89
4.BingBongBob
108
 00:23.76
5.Make
288
 00:24.49
6.qqwref
266
 00:26.89
7.daanbe
244
 00:27.82
8.SilverHawk
216
 00:29.07
9.jaybrainer
290
 00:29.42
10.IzAlexandre2
114
 00:31.39
AO12
1.nabi
92
 00:20.19
2.numbrr
332
 00:24.88
3.vowels
216
 00:26.82
4.Make
288
 00:27.08
5.BingBongBob
108
 00:27.58
6.qqwref
266
 00:29.11
7.SilverHawk
216
 00:31.29
8.jaybrainer
290
 00:31.44
9.IzAlexandre2
114
 00:32.79
10.jai22933
23
 00:34.22
Robots / programmatic solversinfo  
1.tlstyer
161
00:00.008
2.jllachan00:00.491
3.BertinSylux98
34
00:00.858

* 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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