Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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