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How to solve Videos Forum Timed Rankings Print   Solution 5 Dec 2017
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 336 times
abcdefgh
1 
12|

5 :

14×

4-
7+
2 
7|
240×

10|
4+



3 

11|


6|
7|
6-

4 


7|
56×


5|
10×
5 
7|
5-



13+


6 


7|

7|

1 :

7 
5|
5-
2-

3-


8 




9+

18×

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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