Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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