Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Go back and make a different choice.

 

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

 

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