Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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