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. rekted 01:40.42
2. tuberculosis
106
 02:02.50
3. SudokuFan
35
 02:05.65
4. stemvork 02:05.85
5. OGPartyGirl
25
 02:20.09
6. Lespring22 02:22.03
7. pandabiubiu
96
 03:04.63
8. nerdvert
100
 03:23.27
9. mmmoongoddess
146
 03:36.30
10. OliverA 03:45.55
11. tworivers
39
 04:10.50
12. Grace Mayne
25
 04:20.25
13. spen sp2
24
 04:21.15
14. sourapplebaby
16
 05:33.59
15. Iceberg9 05:47.76
16. 67676
5
 05:48.34
17. Chromata 06:14.44
18. Beastinboston
50
 06:18.65
19. hazelmus
19
 07:49.10
20. lauraapzz
82
 08:36.97
This Week
1. tuberculosis
106
 02:02.50
2. SudokuFan
35
 02:05.65
3. stemvork 02:05.85
4. OGPartyGirl
25
 02:20.09
5. mmmoongoddess
146
 03:36.30
6. pandabiubiu
96
 03:41.61
7. OliverA 03:45.55
8. tworivers
39
 04:10.50
9. spen sp2
24
 04:24.65
10. sourapplebaby
16
 05:33.59
11. 67676
5
 05:48.34
12. Chromata 06:14.44
13. hazelmus
19
 07:49.10
14. Yunteacher
28
 15:38.79
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Today
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MO3
1. nabi
92
 00:48.32
2. numbrr
314
 00:49.33
3. Make
279
 01:01.00
4. qqwref
266
 01:11.83
5. Douglas Shamlin Jr.
719
 01:22.40
6. vx14
181
 01:23.64
7. SilverHawk
216
 01:24.09
8. IzAlexandre2
114
 01:24.53
9. thrasymachus
69
 01:27.97
10. beatrixwashere
117
 01:29.37
AO5
1. nabi
92
 00:48.32
2. numbrr
314
 00:50.66
3. Make
279
 01:00.81
4. qqwref
266
 01:09.90
5. Douglas Shamlin Jr.
719
 01:24.65
6. SilverHawk
216
 01:25.86
7. IzAlexandre2
114
 01:27.31
8. vx14
181
 01:29.60
9. LittlePiggy
83
 01:33.20
10. boru
126
 01:33.50
AO12
1. nabi
92
 00:52.40
2. numbrr
314
 00:57.75
3. Make
279
 01:08.18
4. qqwref
266
 01:14.36
5. SilverHawk
216
 01:28.95
6. IzAlexandre2
114
 01:32.30
7. vx14
181
 01:34.66
8. thrasymachus
69
 01:37.66
9. LittlePiggy
83
 01:39.93
10. TGOokami
166
 01:40.60
Robots / programmatic solversinfo  
1.tlstyer
143
00:00.009
2.jllachan00:00.492
3.BertinSylux98
34
00:01.359

* 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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