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How to solve Videos Forum Timed Rankings Books Print 22 Jan 2018
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
6×6
7×7
Sudoku
Difficult:
4×4
5×5
6×6
7×7
9×9
Extra
Difficult 6 × 6, Rating: ★★★  Points: 7     Solved 816 times
Calcudoku twin  -  these two puzzles have the same solution

abcdef
1 
12+


2 :

19+
2 
13+

576×



3 



9+


4 

5+



10+
5 
15+

0-



6 




1-

abcdef
1 
10×

54×
720×

4
2 





3 
9+

17+
5 :


4 




0-

5 
18×

14+


10+
6 






total
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