Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Go back and make a different choice.

 

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

 

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