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. CroMa
96
 00:48.82
6. itsleviOsanotlevioSA
24
 00:59.75
7. paopumoon 01:12.78
8. tkmat
39
 01:27.29
9. Irisa
170
 01:48.32
10. slyguy519
62
 02:10.42
11. THEmary
9
 02:11.03
12. ninameh 02:11.39
13. frafrimb 02:11.46
14. NaluXV1 02:11.86
15. johnbob 02:20.46
16. Maxio68
32
 02:26.81
17. FunAcroFly
137
 02:36.26
18. Jorjess
31
 02:42.20
19. Mastek 02:42.90
20. mielan1 02:46.10
This Week
1. thall
64
 00:25.61
2. tkmat
39
 01:27.29
3. slyguy519
62
 02:10.42
4. THEmary
9
 02:11.03
5. ninameh 02:11.39
6. Maxio68
32
 02:26.81
7. FunAcroFly
137
 02:36.26
8. mielan1 02:46.10
9. pokosuk
41
 03:35.34
10. aguacate
6
 04:03.28
11. pollyw 09:47.10
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Today
1. ninameh 02:11.39
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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
284
 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
284
 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
284
 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
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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