Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Go back and make a different choice.

 

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

 

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