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
3  9            
      8    4  5
      5  67    
        6        
  86    5      
  2  4      8  
    2        6  
8      1      7
    37    9  8
          8  7  
      7    2  6
7    4          
  56            
              18
  9    86    3
3      6        
    7        4  
    913