Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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