Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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