Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

7
4
5
8
1
2
3
6
7
9
6
8
4
3
7
5
1
2
3
2
1
1      
      6
       
1      
      6
       
5
4
8
9
5
7
1
9
2
4
6
3
8
2
4
3
6
8
1
7
5
9
1
9
8
5
3
7
2
1
4
2
1      
       
   8   
1      
       
7  8   
4
9
3
1      
       
7      
5
6
3
9
5
1
7
6
8
2
4
1      
       
7      
4
6
8
5
2
9
1      
       
7      
3

 

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