Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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