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
 00:25.61
2. llmt9
99
 00:29.55
3. Kukko
179
 00:33.95
4. OGPartyGirl
57
 00:40.91
5. spen sp2
57
 00:51.12
6. itsleviOsanotlevioSA
25
 00:59.75
7. Lua
163
 01:04.83
8. paopumoon 01:12.78
9. tkmat
40
 01:27.29
10. Irisa
171
 01:48.32
11. eliii
5
 01:51.42
12. Lokiskindl
10
 01:56.06
13. slyguy519
62
 02:10.42
14. THEmary
10
 02:11.03
15. ninameh 02:11.39
16. frafrimb 02:11.46
17. NaluXV1 02:11.86
18. johnbob 02:20.46
19. Maxio68
32
 02:26.81
20. FunAcroFly
137
 02:36.26
This Week
1. thall
64
 00:26.31
2. spen sp2
57
 00:51.12
3. Lua
163
 01:04.83
4. eliii
5
 01:51.42
5. Lokiskindl
10
 01:56.06
6. ninameh 02:11.39
7. mielan1 02:39.75
8. Lokiskind
1
 02:49.65
9. Eng1marigold
7
 07:20.25
10.--- empty -----:--
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Today
1. spen sp2
57
 01:19.76
2. Lokiskindl
10
 01:56.06
3. mielan1 02:39.75
4. Lokiskind
1
 02:49.65
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
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19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
721
 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. jai22933
23
 00:24.54
9. daanbe
237
 00:25.00
10. thall
64
 00:25.10
AO5
1. Douglas Shamlin Jr.
721
 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. qqwref
266
 00:26.34
10. thall
64
 00:26.44
AO12
1. Douglas Shamlin Jr.
721
 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. qqwref
266
 00:27.68
9. thall
64
 00:28.83
10. Joshua Zhang [Studen...
8
 00:28.84
Robots / programmatic solversinfo  
1.tlstyer
151
00:00.007
2.jllachan00:00.483
3.BertinSylux98
34
00:00.835

* 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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