Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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