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.

 

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

 

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