Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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