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How to solve Videos Forum Timed Rankings Books Specials Print 19 Sep 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: ★★★★★  Points: 8     Solved 274 times
abcdefgh
1 
2-

3-
18×

7-

2-
2 
14|
7

4+
6|

7|

3 


9|

48×


7|
4 
2 :
1-

12+


6|

5 


7|
1-

24×

7|
6 
5 :


40×


12|

7 
12×
3-


9+


8 :
8 

12×


5 :

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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