Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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