Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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