Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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