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How to solve Videos Forum Timed Rankings Books Print 21 Jan 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 859 times
Calcudoku twin  -  these two puzzles have the same solution

abcdef
1 
1-
24×


75×
2-
2 






3 
9+

19+

2-

4 




14+

5 
13+

1-



6 

1

2-


abcdef
1 
14+


7+
20×

2 

432×


11+
3 

2-


2

4 
300×

6+


2 :
5 



144×


6 


2

1-

total
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