Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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