Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 2 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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