Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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