Sudoku #1809

Complexity: Medium

 Fun Fact About Sudoku
The world record for solving a Rubik's Cube puzzle is 5.5 seconds.

Enter numbers into the empty cells so that each row, column and 3x3 box contains the numbers 1 to 9.

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