Parity Calcudoku Sudoku (Daily Sudoku League #38)

This Parity Calcudoku Sudoku is my 38th contribution to The League of Extraordinary Ladies and Gentlemen.
Rules of Parity Calcudoku Sudoku
Classic Sudoku Rules apply. Additionally, all the cells with a circle contain digits of the same parity i.e. either all these digits are odd or all are even. In the grey rectangles, the bottom line is equal to the sum of the two upper lines.
Parity Calcudoku Sudoku (Daily Sudoku League #38)
Parity Calcudoku Sudoku (Daily Sudoku League #38)
Bent Arrow Sudoku (Daily Sudoku League #37) Solution
Bent Arrow Sudoku (Daily Sudoku League #37) Solution

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