Classic Sudoku (Fun With Sudoku #151)

Recently I authored one of the rounds of Sudoku Mahabharat named Twisted Classics. This round contained Sudoku variations which are almost Classic Sudoku. We have kept this round as an easy one even though there were some tough puzzles created for this round. Now, this round is over and I will be posting the puzzles which appeared in this round and also the puzzles which we have not included in this round soon. I am starting with the Classic Sudoku. For me creating the Classic Sudoku puzzle is tough. My previous year's Sudoku Mahabharat round was of Easy difficulty level and initially I wanted this round to be on the harder side. Many Classic Sudoku I created for this round turned out to be an easy one. However, after creating around more than 10 Classic Sudoku puzzles, I was able to create some tough Classic Sudoku puzzles. One of the Classic Sudoku which I created was very tough and later we twisted around 4 digits to make this Sudoku easier. Currently, I am posting the Classic Sudoku which appeared in this contest, and soon I will publish the original tough Sudoku.

This Classic Sudoku I am posting in Fun With Sudoku Series as 151st Sudoku in this series.

Classic Sudoku Instructions