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. llmt9
99
 00:33.91
2. Kukko
180
 00:54.34
3. Adorae
93
 00:55.99
4. Lespring22 00:56.56
5. ma2urka 01:09.05
6. Stefferox 01:13.38
7. crema
273
 01:16.11
8. iftheshoefish
24
 01:30.81
9. tworivers
43
 01:31.15
10. salome 02:01.32
11. HumanAlgorithm
10
 02:07.42
12. avibdake 02:09.66
13. Menna
17
 02:16.58
14. mielan1 02:27.25
15. Victorious1
206
 02:27.96
16. THEmary
10
 03:16.83
17. Lokiskind
1
 03:22.20
18. Toonm 03:24.57
19. mooniex 03:31.40
20. Luca22
8
 03:50.61
This Week
1. llmt9
99
 00:46.75
2. Lespring22 00:56.56
3. Adorae
93
 01:10.33
4. Stefferox 01:42.83
5. iftheshoefish
24
 01:47.24
6. tworivers
43
 02:13.30
7. mielan1 02:30.90
8. Lokiskind
1
 03:22.20
9. Toonm 04:02.02
10. agrayperspectiv 04:07.14
11. Uthor 24d 20:31:23.64
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
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16.--- empty -----:--
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18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. iftheshoefish
24
 01:49.49
2. tworivers
43
 02:13.30
3. mielan1 02:30.90
4. Uthor 24d 20:31:23.64
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. nabi
92
 00:19.68
2. numbrr
321
 00:24.26
3. BingBongBob
108
 00:26.71
4. vowels
216
 00:27.32
5. Make
285
 00:30.39
6. qqwref
266
 00:31.29
7. daanbe
237
 00:33.17
8. IzAlexandre2
114
 00:35.67
9. distracted
144
 00:36.34
10. LittlePiggy
83
 00:36.88
AO5
1. nabi
92
 00:19.80
2. numbrr
321
 00:24.89
3. vowels
216
 00:29.42
4. Make
285
 00:32.49
5. qqwref
266
 00:32.88
6. BingBongBob
108
 00:32.92
7. daanbe
237
 00:36.63
8. IzAlexandre2
114
 00:37.25
9. SilverHawk
216
 00:37.63
10. vx14
184
 00:38.43
AO12
1. nabi
92
 00:21.95
2. numbrr
321
 00:28.68
3. BingBongBob
108
 00:36.42
4. qqwref
266
 00:36.65
5. vowels
216
 00:37.84
6. SilverHawk
216
 00:38.89
7. Make
285
 00:39.22
8. vx14
184
 00:41.99
9. IzAlexandre2
114
 00:43.70
10. LittlePiggy
83
 00:44.27
Robots / programmatic solversinfo  
1.tlstyer
151
00:00.007
2.jllachan00:00.491
3.BertinSylux98
34
00:00.867

* 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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