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
101
 00:36.89
2. lukegr 00:40.84
3. Lespring22 00:56.56
4. ma2urka 00:58.07
5. Adorae
96
 01:10.33
6. Stefferox 01:11.98
7. HumanAlgorithm
12
 01:18.39
8. iftheshoefish
27
 01:31.38
9. tworivers
44
 01:42.32
10. mielan1 02:08.21
11. avibdake 02:09.66
12. Beastinboston
61
 02:19.31
13. mamawilma
99
 02:49.28
14. Lokiskind
1
 02:49.61
15. Toonm 02:57.99
16. nosenugget
146
 03:15.60
17. pollyw 04:05.03
18. agrayperspectiv 04:07.14
19. Ernie A.
109
 04:48.05
20. FrancoCabrera
7
 05:50.49
This Week
1. lukegr 00:40.84
2. llmt9
101
 00:46.24
3. ma2urka 00:58.07
4. Stefferox 01:25.74
5. mielan1 02:08.21
6. Beastinboston
61
 02:19.31
7. tworivers
44
 02:26.40
8. mamawilma
99
 02:49.28
9. Lokiskind
1
 02:49.61
10. nosenugget
146
 03:15.60
11. Toonm 03:59.02
12. pollyw 04:05.03
13. Ernie A.
109
 04:48.05
14. FrancoCabrera
7
 05:50.49
15. sandrovka
20
 12:38.79
16. Sophiewangwang 17:57.60
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18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Stefferox 01:25.74
2. mielan1 03:27.48
3.--- empty -----:--
4.--- empty -----:--
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
286
 00:30.39
6. qqwref
266
 00:31.29
7. daanbe
238
 00:33.17
8. IzAlexandre2
114
 00:35.67
9. distracted
145
 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
286
 00:32.49
5. qqwref
266
 00:32.88
6. BingBongBob
108
 00:32.92
7. daanbe
238
 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
286
 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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