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How to solve Videos Forum Timed Rankings Books PDF Print 19 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: ★★★★★  Points: 8     Solved 80 times
abcdefgh
1 
14|
18×

14×

6+

2 

2 :
7|

11|

7|
1-
3 
3|

12+


15×


4 



2 :
7|

24×

5 
7|
1-



42×
13|

6 

7|




3|
7 
5|

11|

7|
10+
4-

8 

7+

1



6

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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