Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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