Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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