Arrow Sudoku (Daily Sudoku League #52)

Today World Puzzle Championship 2014 is staring. Wishing 'Best of Luck' all my friends and visitors of this blog who are participating in the championship.

Regarding this puzzle, if you look at my earlier designs, I try to create heart shape in Sudoku with hints. This Sudoku was no different when I created it first but it was very easy Sudoku. Then I removed just one digit in the center of second row which made this Sudoku very interesting and not so easy. In fact for me 90% of my time was spent on finding this digit in the center of second row. This was good learning that just changing one digit can fully change the solving path of Sudoku.

This Arrow Sudoku is my 52nd contribution for The League of Extraordinary Ladies and Gentlemen.

Rules of Arrow Sudoku

Classic Sudoku Rules apply. Additionally the number placed in a cell with a circle must be the sum of the numbers placed in cells the adjoining arrow passes through. Numbers may repeat on arrows.