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. thall
66
 00:04.64
2. llmt9
101
 00:05.74
3. nallie
44
 00:06.98
4. AndyHu
7
 00:08.18
5. Lore1 00:08.73
6. vlash 00:09.29
7. eliii
7
 00:10.26
8. Kutner17
157
 00:10.75
9. NghiVo
71
 00:11.40
10. avibdake 00:11.66
11. huohuo2004
48
 00:12.05
12. OliverA 00:12.16
13. khwa
1
 00:12.42
14. Hahllyicssa
43
 00:13.32
15. css861 00:13.94
16. Menna
25
 00:14.30
17. niqnna
18
 00:14.76
18. stemvork 00:16.32
19. sandrovka
24
 00:17.21
20. IanTheG
10
 00:18.20
This Week
1. thall
66
 00:04.64
2. llmt9
101
 00:05.74
3. nallie
44
 00:06.98
4. Lore1 00:08.73
5. eliii
7
 00:10.26
6. OliverA 00:13.94
7. stemvork 00:16.32
8. IanTheG
10
 00:18.20
9. Klappa en ko
120
 00:20.84
10. SergioR
25
 00:21.88
11. windex42
37
 00:28.59
12. Kukurbo
98
 00:34.84
13. k03ih01
55
 00:35.86
14. sigmaSYSU
10
 00:37.64
15. robynn 00:51.37
16. Koakuma
54
 00:56.31
17. Teo M. M.
5
 05:37.00
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. llmt9
101
 00:05.74
2. stemvork 00:16.32
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
 00:02.56
2. vowels
216
 00:02.65
3. BingBongBob
108
 00:03.23
4. numbrr
322
 00:03.38
5. jai22933
23
 00:03.44
6.anonymous
14
 00:03.50
6. JZE
88
 00:03.50
8.anonymous
5
 00:03.53
9.anonymous
2
 00:03.66
10. Douglas Shamlin Jr.
722
 00:04.17
AO5
1. nabi
92
 00:02.76
2. vowels
216
 00:02.87
3. BingBongBob
108
 00:03.43
4.anonymous
5
 00:03.55
5. numbrr
322
 00:03.60
6.anonymous
14
 00:03.63
7.anonymous
2
 00:03.72
8. jai22933
23
 00:03.75
9. JZE
88
 00:04.43
10. Douglas Shamlin Jr.
722
 00:04.45
AO12
1. nabi
92
 00:02.96
2. vowels
216
 00:03.32
3. BingBongBob
108
 00:03.94
4. jai22933
23
 00:04.04
5.anonymous
2
 00:04.09
6.anonymous
5
 00:04.17
7. numbrr
322
 00:04.55
8. Douglas Shamlin Jr.
722
 00:05.00
9. qqwref
266
 00:05.64
10. Make
286
 00:05.96
Robots / programmatic solversinfo  
1.dbut2
42
00:00.003
2.tlstyer
151
00:00.006
3.jllachan00:00.493

* 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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