Position Sudoku (Daily Sudoku League #64)

Position Sudoku variation, I first time saw in Dutch Sudoku Championship 2014 which happened in June 2014. Maybe this variation appeared before this championship but I was not aware of Position Sudoku before the Instruction booklet for Dutch Sudoku Championship got released.
This Position Sudoku is my 64th contribution to The League of Extraordinary Ladies and Gentlemen. Can you solve this Position Sudoku puzzle?

Rules of Position Sudoku

Classic Sudoku Rules apply. Additionally, clues outside indicate the position of the highest digit in the first 3 cells.
Classic Sudoku (Fun With Sudoku #20) Solution
Classic Sudoku (Fun With Sudoku #20) Solution

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