Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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