Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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