Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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