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. Taco1717
73
 00:47.48
2. ma2urka 01:08.44
3. OliverA 01:10.64
4. SadSimo 01:12.20
5. Stefferox 01:19.20
6. crema
263
 01:20.22
7. Liza94You
2
 01:37.20
8. pollyw 02:43.52
9. ktaklearns 02:48.98
10. lauraapzz
80
 02:53.19
11. Vgcl3m 03:22.31
12. spen sp2
21
 03:26.73
13. Lokiskind
1
 03:28.99
14. OGPartyGirl
20
 03:35.48
15. floomsi
17
 03:36.48
16. Beastinboston
45
 03:38.26
17. shoner 03:58.34
18. Menna
7
 04:08.54
19. Toonm 04:09.31
20. Borski 04:14.80
This Week
1. SadSimo 01:12.20
2. Stefferox 01:25.57
3. pollyw 02:43.52
4. ktaklearns 03:20.16
5. Vgcl3m 03:22.31
6. spen sp2
21
 03:26.73
7. shoner 03:58.34
8. floomsi
17
 04:20.75
9. IrkoPixel
48
 05:09.11
10. Cytrus 05:09.64
11. lilliii 05:31.71
12. Toonm 05:40.83
13. KTSH4
4
 06:01.77
14. Silversight01
26
 06:08.68
15. Soham Bhosale
1
 06:51.29
16. Borsuczi
3
 08:13.84
17. Thegroover 08:34.73
18. Uthor 11d 23:13:55.46
19.--- empty -----:--
20.--- empty -----:--
Today
1. spen sp2
21
 03:26.73
2. Soham Bhosale
1
 06:51.29
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
 00:19.68
2. numbrr
310
 00:24.26
3. BingBongBob
108
 00:26.71
4. vowels
216
 00:27.32
5. Make
279
 00:30.39
6. qqwref
266
 00:31.29
7. IzAlexandre2
114
 00:35.67
8. distracted
143
 00:36.34
9. LittlePiggy
83
 00:36.88
10. PuzzleMaestro
90
 00:37.26
AO5
1. nabi
92
 00:19.80
2. numbrr
310
 00:24.89
3. vowels
216
 00:29.42
4. Make
279
 00:32.49
5. qqwref
266
 00:32.88
6. BingBongBob
108
 00:32.92
7. IzAlexandre2
114
 00:37.25
8. SilverHawk
216
 00:37.63
9. vx14
179
 00:38.43
10. LittlePiggy
83
 00:38.67
AO12
1. nabi
92
 00:21.95
2. numbrr
310
 00:28.68
3. BingBongBob
108
 00:36.42
4. qqwref
266
 00:36.65
5. vowels
216
 00:37.84
6. SilverHawk
216
 00:38.89
7. Make
279
 00:39.22
8. vx14
179
 00:41.99
9. IzAlexandre2
114
 00:43.70
10. LittlePiggy
83
 00:44.27
Robots / programmatic solversinfo  
1.tlstyer
142
00:00.007
2.jllachan00:00.491
3.BertinSylux98
34
00:00.867

* 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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