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How to solve Videos Forum Timed Rankings Books Print 18 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 736 times
Calcudoku twin  -  these two puzzles have the same solution

abcdef
1 
1-

40×

15+

2 

108×

60×


3 




1-

4 

18+

12×

17+
5 
2-





6 



3 :


abcdef
1 
288×

16+
10+

45×
2 






3 

45×



8+
4 
11+


10+
4

5 





20×
6 
5

2 :



total
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