This is the first time I am posting Odd-Even-Big-Small Sudoku. This Sudoku is part of World Sudoku Championship 2015 and I tried to create this Sudoku for the practice before this championship. However, I failed to create this Sudoku that time and left it in-between uncompleted. Last week I tried again to create this Sudoku and it took me a lot of tweaking to create this Sudoku correctly. There is a lot of learning I got while creating this Sudoku. Also, there is a lot of feedback I got regarding this Sudoku after the testing of this Sudoku from Prasanna. I will implement this feedback in my future Sudoku and Puzzle creations to improve upon my Sudoku and Puzzle creating skills. Anyway this Odd-Even-Big-Small Sudoku, I am posting in Fun With Sudoku Series as the 169th puzzle in this series. Can you solve this hard Sudoku puzzle?
Rules of Odd-Even-Big-Small Sudoku
8x8 Classic Sudoku Rules apply. In addition, the indicator word on the outside says that the first two numbers along that row or column are either odd(1,3,5,7), even(2,4,6,8), big(5,6,7,8), or small(1,2,3,4).
 Odd-Even-Big-Small Sudoku (Fun With Sudoku #169)

Here is the solution to the Sudoku puzzle titled "Classic Sudoku Puzzle (Fun With Sudoku #271)"
 Classic Sudoku Puzzle (Fun With Sudoku #271) Solution