Langer's Sudoku Assistant

Invalid Sudoku!

Row 3 is invalid. Column 7 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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