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How to solve Videos Forum Timed Rankings PDF Print   Solution 12 Feb 2019
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
6×6
8×8
Killer
Sudoku
Difficult:
4×4
6×6
8×8
9×9
Extra
Difficult 8 × 8, Rating: ★★★★★      Solved 322 times
abcdefgh
1 
4-

3+

14|

5|

2 
3|
14|
10+
12+

3|

3-
3 



2-

11+


4 

280×
12|
6|

18×

5 
7|



7|
6 :

48×
6 

7|

13+




7 
7|



13+

6-

8 
12+

3|

7|

7|

Note: this puzzle also uses the bitwise OR operator |
(see for example this page or this forum page for an explanation)


total
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