Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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