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
66
 00:21.61
2. nallie
45
 00:31.54
3. Lore1 00:40.64
4. stemvork 00:43.75
5. Dorice
272
 00:46.23
6. crema
275
 00:58.60
7. OliverA 00:58.91
8. css861 01:12.31
9. THEmary
10
 01:18.18
10. sandrovka
26
 01:54.53
11. Irisa
178
 01:56.03
12. Lokiskind
1
 01:58.01
13. CoepsX53 02:10.02
14. KETJAK
41
 02:10.80
15. Ernie A.
111
 02:15.94
16. BeccaWorm
138
 02:18.63
17. frtnc
120
 02:31.49
18. SergioR
25
 02:46.64
19. sigmaSYSU
10
 03:02.24
20. _AJ_
14
 03:18.20
This Week
1. thall
66
 00:21.61
2. Dorice
272
 00:46.23
3. Irisa
178
 01:56.03
4. Lokiskind
1
 01:58.01
5. SergioR
25
 02:55.51
6. _AJ_
14
 03:18.20
7. Tintin
34
 04:58.85
8.--- empty -----:--
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Today
1. Dorice
272
 00:46.23
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
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16.--- empty -----:--
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19.--- empty -----:--
20.--- empty -----:--
MO3
1. Douglas Shamlin Jr.
722
 00:14.28
2. nabi
92
 00:15.73
3. numbrr
322
 00:18.32
4. BingBongBob
108
 00:19.82
5. vowels
216
 00:21.83
6. thall
66
 00:22.47
7. Joshua Zhang [Studen...
8
 00:22.57
8. Make
287
 00:23.69
9. jai22933
23
 00:24.54
10. daanbe
239
 00:25.00
AO5
1. Douglas Shamlin Jr.
722
 00:14.96
2. nabi
92
 00:16.49
3. numbrr
322
 00:19.21
4. BingBongBob
108
 00:19.98
5. vowels
216
 00:22.17
6. thall
66
 00:22.65
7. Joshua Zhang [Studen...
8
 00:23.06
8. Make
287
 00:24.78
9. jai22933
23
 00:25.09
10. qqwref
266
 00:26.34
AO12
1. Douglas Shamlin Jr.
722
 00:16.47
2. nabi
92
 00:19.36
3. numbrr
322
 00:20.92
4. BingBongBob
108
 00:21.05
5. vowels
216
 00:24.20
6. thall
66
 00:25.02
7. Make
287
 00:25.53
8. jai22933
23
 00:26.96
9. qqwref
266
 00:27.68
10. Joshua Zhang [Studen...
8
 00:28.84
Robots / programmatic solversinfo  
1.dbut2
43
00:00.003
2.tlstyer
151
00:00.007
3.jllachan00:00.483

* 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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