Langer's Sudoku Assistant

Invalid Sudoku!

Column 3 is invalid. The top left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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