Logic Masters Deutschland e.V.

This puzzle is a variant of a Standard Sudoku.
rule:

1. Standard Sudoku rules apply;

2. All the 3×3 squares centered on "9" are regarded as an extra area, including "9" on the edge (The 3×3 will be out of bounds. Don't worry, just focus on the internal area);

3. All x-shaped 5 cells centered on "5" are an extra region based on all odd numbers(1,3,5,7,9), including "5" on the edge (Just deal with it same as "9").

Here are some examples：

CTC link. Have fun solving!

This new rule is so strong that only give five digits to get a unique solution, but it cannot be solved by logic. So I changed it to what it is now, hope you enjoy it!

Your feedback and comments are highly appreciated :) Enjoy !