DOUBLE SUDOKU

In each part write one digit into each blank square so that every horizontal row, every vertical column, and every 3×3 block contains the digits 1 to 9 exactly once each. Each square in Part A must contain a different digit from the corresponding square in Part B.


Part A Part B
  2  6          
  1    7    9  
3        1    2
  72        6  
9    4          
    1      7    
        2      4
    93        5
        16  8  
    635        
8        42    
  4    6        
    3      67  
    2  4  1    
  9            3
3  4        9  
            7  2
62      5    8