Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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