Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Go back and make a different choice.

 

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

 

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