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.

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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
 00:18.45
2.Dorice
276
 00:34.34
3.Kukko
191
 00:36.57
4.spen sp2
72
 00:38.40
5.floomsi
24
 00:55.40
6.Puninos
81
 01:05.26
7.oversizedpixie
139
 01:09.43
8.Ernie A.
115
 01:41.56
9.florisdeporis
26
 01:42.59
10.Zixivyxity
41
 01:43.94
11.Matthew Zimmer
49
 02:09.46
12.Szysiu123
20
 02:11.93
13.NaluXV1 02:17.18
14.1XMvv 02:58.06
15.PheromoneJones 03:07.41
16.小精灵
94
 03:14.68
17.pokosuk
42
 03:57.24
18.NoriFoggy 04:06.33
19.Antwan Rice-McKinley
12
 04:14.80
20.kei
62
 05:26.65
This Week
1.thall
67
 00:18.45
2.Dorice
276
 00:34.34
3.spen sp2
72
 00:44.80
4.floomsi
24
 00:55.40
5.NaluXV1 02:17.18
6.1XMvv 02:58.06
7.PheromoneJones 03:07.41
8.小精灵
94
 03:14.68
9.kei
62
 05:26.65
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Today
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MO3
1.Douglas Shamlin Jr.
725
 00:14.28
2.nabi
92
 00:15.73
3.numbrr
330
 00:18.32
4.BingBongBob
108
 00:19.82
5.vowels
216
 00:21.83
6.thall
67
 00:22.47
7.Joshua Zhang [Student]
8
 00:22.57
8.Make
288
 00:23.69
9.jai22933
23
 00:24.54
10.daanbe
244
 00:25.00
AO5
1.Douglas Shamlin Jr.
725
 00:14.96
2.nabi
92
 00:16.49
3.numbrr
330
 00:19.21
4.BingBongBob
108
 00:19.98
5.vowels
216
 00:22.17
6.thall
67
 00:22.65
7.Joshua Zhang [Student]
8
 00:23.06
8.Make
288
 00:24.78
9.jai22933
23
 00:25.09
10.qqwref
266
 00:26.34
AO12
1.Douglas Shamlin Jr.
725
 00:16.47
2.nabi
92
 00:19.36
3.numbrr
330
 00:20.92
4.BingBongBob
108
 00:21.05
5.vowels
216
 00:24.20
6.thall
67
 00:25.02
7.Make
288
 00:25.53
8.jai22933
23
 00:26.96
9.qqwref
266
 00:27.68
10.Joshua Zhang [Student]
8
 00:28.84
Robots / programmatic solversinfo  
1.dbut2
58
00:00.003
2.tlstyer
160
00:00.007
3.jllachan00:00.483

* 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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