Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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