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. JonasE
1
 00:04.75
2. M1LE5
2
 00:05.93
3. llmt9
100
 00:07.11
4. nallie
38
 00:07.43
5. AndyHu
7
 00:08.18
6. eliii
6
 00:09.30
7. Kutner17
157
 00:10.75
8. NghiVo
65
 00:11.40
9. avibdake 00:11.66
10. TahtVarisi 00:11.90
11. huohuo2004
43
 00:12.05
12. OliverA 00:12.16
13. paopumoon 00:12.40
14. khwa
1
 00:12.42
15. Hahllyicssa
40
 00:13.32
16. tekgen
2
 00:14.25
17. keremkirantepe 00:14.80
18. Blackberry
21
 00:15.22
19. BlueOcarina
91
 00:19.20
20. Sophiewangwang 00:19.74
This Week
1. llmt9
100
 00:07.11
2. nallie
38
 00:07.43
3. AndyHu
7
 00:08.18
4. Kutner17
157
 00:10.75
5. NghiVo
65
 00:11.40
6. avibdake 00:11.66
7. OliverA 00:12.16
8. Hahllyicssa
40
 00:13.32
9. BlueOcarina
91
 00:19.20
10. Sophiewangwang 00:19.74
11. Achlsy 00:19.99
12. cozyjaewha 00:20.19
13. Ernie A.
109
 00:20.33
14. NickB15 00:20.79
15. ailisilob 00:22.51
16. Chalk
119
 00:25.59
17. sandrovka
20
 00:26.62
18. wwz
11
 00:54.61
19. Scr33n 24d 20:31:23.64
20.--- empty -----:--
Today
1. llmt9
100
 00:07.11
2. sandrovka
20
 00:26.62
3. wwz
11
 00:54.61
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
321
 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
321
 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
321
 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
41
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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