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. stemvork 00:49.46
2. SadSimo 00:52.73
3. Grace Mayne
25
 01:10.80
4. nonofun1
39
 01:11.58
5. Taco1717
71
 01:16.55
6. OGPartyGirl
17
 01:22.31
7. SA5838 01:23.98
8. etgl
132
 01:40.05
9. spen sp2
19
 01:42.25
10. Silversight01
25
 01:45.78
11. lauraapzz
79
 01:46.15
12. nerdvert
99
 01:49.58
13. floomsi
16
 01:52.80
14. Stefferox 01:53.00
15. kupasoaika 02:01.60
16. hazelmus
13
 02:06.49
17. Lokiskind
1
 02:13.20
18. Beastinboston
44
 02:26.80
19. Larali 02:27.88
20. sanasz 02:32.69
This Week
1. OGPartyGirl
17
 01:22.31
2. Grace Mayne
25
 01:24.20
3. spen sp2
19
 01:46.28
4. floomsi
16
 01:52.80
5. Stefferox 01:53.00
6. kupasoaika 02:01.60
7. Lokiskind
1
 02:13.20
8. Larali 02:27.88
9. minionman 02:55.33
10. chinmi 03:15.96
11. IrkoPixel
47
 03:21.86
12. KTSH4 03:40.60
13. Cytrus 03:50.70
14. Borsuczi
3
 03:59.82
15. Thegroover 04:24.08
16. Toonm 04:29.91
17. NoriFoggy 04:44.65
18. novas.eclipse
7
 04:55.92
19. baeksooist
3
 09:31.67
20. tinku
44
 15:15.68
Today
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2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
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. nabi
92
 00:18.24
2. vowels
216
 00:18.90
3. numbrr
310
 00:21.03
4. BingBongBob
108
 00:22.37
5. Make
279
 00:24.02
6. qqwref
266
 00:24.40
7. jai22933
23
 00:26.58
8. SilverHawk
216
 00:26.59
9. IzAlexandre2
114
 00:29.87
10. boru
124
 00:31.30
AO5
1. nabi
92
 00:19.01
2. vowels
216
 00:20.64
3. numbrr
310
 00:22.23
4. BingBongBob
108
 00:23.76
5. Make
279
 00:24.49
6. qqwref
266
 00:26.89
7. SilverHawk
216
 00:29.07
8. IzAlexandre2
114
 00:31.39
9. boru
124
 00:31.71
10. jai22933
23
 00:31.97
AO12
1. nabi
92
 00:20.19
2. numbrr
310
 00:24.88
3. vowels
216
 00:26.82
4. Make
279
 00:27.08
5. BingBongBob
108
 00:27.58
6. qqwref
266
 00:29.11
7. SilverHawk
216
 00:31.29
8. IzAlexandre2
114
 00:32.79
9. jai22933
23
 00:34.22
10. boru
124
 00:37.05
Robots / programmatic solversinfo  
1.tlstyer
142
00:00.008
2.jllachan00:00.491
3.BertinSylux98
34
00:00.858

* 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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