Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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