Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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