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
61
 00:24.69
2. Vgcl3m 00:39.96
3. vicadancerr
14
 00:43.92
4. yebbo 00:47.66
5. OGPartyGirl
22
 00:59.76
6. Grace Mayne
25
 01:02.11
7. CieMichu
14
 01:05.90
8. Lua
150
 01:08.36
9. spen sp2
23
 01:10.46
10. MrNyooooom 01:11.03
11. Valter Correia
5
 01:11.83
12. czar519 01:24.20
13. Szurii_PL
5
 01:27.73
14. iuribdias
2
 01:31.37
15. Jorjess
25
 01:34.35
16. Lokiskind
1
 01:48.01
17. floomsi
17
 01:49.59
18. Tomtei8
8
 01:52.27
19. Adahej 01:54.06
20. Twany 01:56.50
This Week
1. thall
61
 00:27.12
2. yebbo 00:47.66
3. OGPartyGirl
22
 00:59.76
4. baeksooist
5
 02:03.56
5. Jorjess
25
 02:22.70
6. Thegroover 02:55.24
7. Eeeat
8
 02:56.02
8. mattd10
5
 03:36.08
9. makki 03:55.43
10. pokosuk
40
 04:02.35
11. Grantzhuang
18
 06:43.57
12. BakirNabiyev
3
 08:07.29
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Today
1. mattd10
5
 03:41.14
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3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
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MO3
1. Douglas Shamlin Jr.
718
 00:14.28
2. nabi
92
 00:15.73
3. numbrr
312
 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
279
 00:23.69
8. jai22933
23
 00:24.54
9. thall
61
 00:25.10
10. qqwref
266
 00:25.55
AO5
1. Douglas Shamlin Jr.
718
 00:14.96
2. nabi
92
 00:16.49
3. numbrr
312
 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
279
 00:24.78
8. jai22933
23
 00:25.09
9. qqwref
266
 00:26.34
10. thall
61
 00:26.44
AO12
1. Douglas Shamlin Jr.
718
 00:16.47
2. nabi
92
 00:19.36
3. numbrr
312
 00:20.92
4. BingBongBob
108
 00:21.05
5. vowels
216
 00:24.20
6. Make
279
 00:25.53
7. jai22933
23
 00:26.96
8. qqwref
266
 00:27.68
9. thall
61
 00:28.83
10. Joshua Zhang [Studen...
8
 00:28.84
Robots / programmatic solversinfo  
1.tlstyer
143
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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