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. deadimmortal
191
 00:00.32
2. atsra
14
 00:02.65
3. Dorice
274
 00:05.59
4. llmt9
104
 00:06.69
5. paopumoon 00:07.37
6. vichibrax 00:09.79
7. PieterBasje
38
 00:10.42
8. 67676
21
 00:10.47
9. AndyHu
11
 00:10.66
10. effek05
68
 00:11.00
11. IanTheG
25
 00:12.57
12. stemvork 00:12.78
13. GoldChoco36
171
 00:13.05
14. Lore1 00:13.09
15. Oryn
191
 00:13.98
16. FastFreddy
24
 00:14.08
17. Macy
64
 00:14.44
18. Kaci
3
 00:15.22
19. Hahllyicssa
48
 00:15.75
20. otaldieguito
3
 00:16.45
This Week
1. atsra
14
 00:02.65
2. PieterBasje
38
 00:10.42
3. AndyHu
11
 00:10.66
4. vichibrax 00:10.88
5. FastFreddy
24
 00:14.08
6. Kaci
3
 00:15.22
7. otaldieguito
3
 00:16.45
8. 90josungs
3
 00:18.94
9. shoner
7
 00:19.62
10. LittleTomy
68
 00:22.99
11. magarner
55
 00:24.39
12. gkbrelif
2
 00:26.88
13. SergioR
26
 00:32.80
14. lino
1
 00:35.41
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. atsra
14
 00:02.65
2.--- empty -----:--
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. deadimmortal
191
 00:00.33
2. nabi
92
 00:02.56
3. vowels
216
 00:02.65
4. BingBongBob
108
 00:03.23
5. numbrr
324
 00:03.38
6. jai22933
23
 00:03.44
7.anonymous
14
 00:03.50
7. JZE
88
 00:03.50
9.anonymous
5
 00:03.53
10.anonymous
2
 00:03.66
AO5
1. deadimmortal
191
 00:00.40
2. nabi
92
 00:02.76
3. vowels
216
 00:02.87
4. BingBongBob
108
 00:03.43
5.anonymous
5
 00:03.55
6. numbrr
324
 00:03.60
7.anonymous
14
 00:03.63
8.anonymous
2
 00:03.72
9. jai22933
23
 00:03.75
10. jaybrainer
279
 00:04.23
AO12
1. deadimmortal
191
 00:01.82
2. nabi
92
 00:02.96
3. vowels
216
 00:03.32
4. BingBongBob
108
 00:03.94
5. jai22933
23
 00:04.04
6.anonymous
2
 00:04.09
7.anonymous
5
 00:04.17
8. numbrr
324
 00:04.55
9. jaybrainer
279
 00:04.95
10. Douglas Shamlin Jr.
723
 00:05.00
Robots / programmatic solversinfo  
1.dbut2
45
00:00.003
2.tlstyer
154
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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