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
64
 00:22.51
2. nallie
37
 00:43.93
3. Lua
164
 00:48.49
4. spen sp2
62
 00:51.12
5. OliverA 00:58.91
6. css861 01:08.39
7. tkmat
42
 01:27.29
8. eliii
6
 01:30.67
9. huohuo2004
42
 01:48.26
10. Lokiskind
1
 01:50.01
11. Lokiskindl
10
 01:56.06
12. sandrovka
18
 01:56.36
13. rp219 02:04.92
14. Wuni14 02:05.24
15. slyguy519
63
 02:10.42
16. THEmary
10
 02:11.03
17. ninameh 02:11.39
18. CoepsX53 02:13.28
19. Ernie A.
109
 02:15.94
20. khwa
1
 02:19.68
This Week
1. thall
64
 00:22.51
2. nallie
37
 00:43.93
3. OliverA 00:58.91
4. css861 01:08.39
5. sandrovka
18
 01:56.36
6. Lokiskind
1
 02:02.03
7. Ernie A.
109
 02:15.94
8. khwa
1
 02:19.68
9. frtnc
117
 02:31.49
10. daisyisaflower
1
 02:32.06
11. Eng1marigold
10
 02:42.24
12. Sophiewangwang 03:12.03
13. Scr33n 04:15.62
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Today
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MO3
1. Douglas Shamlin Jr.
722
 00:14.28
2. nabi
92
 00:15.73
3. numbrr
321
 00:18.32
4. BingBongBob
108
 00:19.82
5. vowels
216
 00:21.83
6. Joshua Zhang [Studen...
8
 00:22.57
7. Make
285
 00:23.69
8. thall
64
 00:24.07
9. jai22933
23
 00:24.54
10. daanbe
238
 00:25.00
AO5
1. Douglas Shamlin Jr.
722
 00:14.96
2. nabi
92
 00:16.49
3. numbrr
321
 00:19.21
4. BingBongBob
108
 00:19.98
5. vowels
216
 00:22.17
6. Joshua Zhang [Studen...
8
 00:23.06
7. Make
285
 00:24.78
8. jai22933
23
 00:25.09
9. thall
64
 00:25.77
10. qqwref
266
 00:26.34
AO12
1. Douglas Shamlin Jr.
722
 00:16.47
2. nabi
92
 00:19.36
3. numbrr
321
 00:20.92
4. BingBongBob
108
 00:21.05
5. vowels
216
 00:24.20
6. Make
285
 00:25.53
7. jai22933
23
 00:26.96
8. thall
64
 00:27.61
9. qqwref
266
 00:27.68
10. Joshua Zhang [Studen...
8
 00:28.84
Robots / programmatic solversinfo  
1.dbut2
41
00:00.003
2.tlstyer
151
00:00.007
3.jllachan00:00.483

* 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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