Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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