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How to solve Videos Forum Timed Rankings Books Specials Print 12 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: ★★★★★  Points: 8     Solved 89 times
abcdefgh
1 
1-

1-

3+
3|

14|
2 
5|
7|
1-


7|


3 


9|

9+


7|
4 
1-

7|
1-

35×


5 
16×



42×
2-

1-
6 
5|

1-
7|


7|

7 



168×
9|

5|
8 
7|

2



5

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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Articles: the 10 Hardest Logic/Number Puzzles | The 7 Easiest Puzzles | Numerical Intelligence


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