PUZZLE NO. 192 : Odd Even Sudoku

 Another sudoku from my book World Of Sudoku Vol # 1. Freddie Hand, who test solved all sudokus from my book had taken 07:41 minutes on this sudoku. Lets see , if you guys can better that. 

  Also, this sudoku will be covered by Rishi Puri on his YouTube channel Sudokumaniacs. Thanks Rishi for this.

RULES : Classic sudoku rules apply. Cells containing grey circles contain only odd digits. Cells containing grey squares contain only even digits.