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How to solve Videos Forum Timed Rankings Books Print 25 Feb 2018
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
5×5
6×6
8×8
Sudoku
Difficult:
4×4
5×5
6×6
12×12
Extra
Difficult 6 × 6, Rating: ★★★  Points: 7     Solved 512 times
Calcudoku twin  -  these two puzzles have the same solution

abcdef
1 
120×
11+


450×
12×
2 






3 

19+




4 



19+
7+

5 
18×
5



12+
6 






abcdef
1 
1-

7+

360×
1
2 
9+





3 

36×
120×


12+
4 



288×


5 

1-




6 
2

5


6
total
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