Sudoku #2761

Level: Hard

 Fun Fact About 2
Wayne Gould, New Zealander and retired Hong Kong judge, calls himself the stepfather of Sudoku. He stumbled upon a Sudoku book in Tokyo while vacationing there.

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

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