Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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