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How to solve Videos Forum Timed Rankings Books Specials Print 18 Dec 2017
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 522 times
Calcudoku twin  -  these two puzzles have the same solution

abcdef
1 
23+

10+


3 :
2 


13+

20×

3 
12×




240×
4 



11+


5 
30×



1 :

6 


9+



abcdef
1 
15+

1-

12×

2 

144×




3 


22+


9+
4 

9+




5 
5+

48×


72×
6 

5 :




total
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