Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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