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. llmt9
97
 00:32.67
2. Kukko
178
 00:33.95
3. yebbo 00:35.31
4. MushroomsCavern
95
 00:36.70
5. OGPartyGirl
56
 00:42.84
6. spen sp2
50
 00:47.75
7. CroMa
95
 00:48.82
8. Solus
38
 00:49.93
9. itsleviOsanotlevioSA
22
 00:59.75
10. Lua
159
 01:00.99
11. nastya 01:08.50
12. Iceberg9 01:10.41
13. mamawilma
94
 01:27.68
14. Harry_Canyon
144
 01:29.87
15. tkmat
36
 01:38.72
16. leianimelover
5
 01:41.87
17. SWICT
70
 01:42.44
18. xc0xupx
49
 01:43.92
19. Irisa
167
 01:48.32
20. leo1999
24
 01:51.23
This Week
1. Kukko
178
 00:33.95
2. OGPartyGirl
56
 00:42.84
3. itsleviOsanotlevioSA
22
 00:59.75
4. Irisa
167
 01:48.32
5. johnbob 02:20.46
6. frafrimb 02:35.23
7. Mastek 02:42.90
8. daisyisaflower
1
 02:58.31
9. mielan1 03:13.86
10. THEmary
7
 03:23.16
11. Techloart
36
 03:29.06
12. pokosuk
41
 05:12.52
13. 121abc
12
 06:54.14
14. thall
63
 23:37:52.07
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. Kukko
178
 00:33.95
2. itsleviOsanotlevioSA
22
 00:59.75
3. Mastek 02:42.90
4. THEmary
7
 03:23.16
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. 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
283
 00:23.69
8. jai22933
23
 00:24.54
9. daanbe
237
 00:25.00
10. thall
63
 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
283
 00:24.78
8. jai22933
23
 00:25.09
9. qqwref
266
 00:26.34
10. thall
63
 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
283
 00:25.53
7. jai22933
23
 00:26.96
8. qqwref
266
 00:27.68
9. thall
63
 00:28.83
10. Joshua Zhang [Studen...
8
 00:28.84
Robots / programmatic solversinfo  
1.tlstyer
150
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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