Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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