Unless you are an exceedingly clever person, it's unlikely you will re-discover all of the advanced/extreme techniques needed to solve the hardest Sudoku puzzle

Unless you are an exceedingly clever person, it's unlikely you will re-discover all of the advanced/extreme techniques needed to solve the hardest Sudoku puzzles that are out there. Here is an example of one of the aforementioned "extreme" techniques: https://www.sudokuwiki.org/Exocet https://www.sudokuwiki.org/Exocet That said, you can probably solve up to and including "difficult" Sudoku puzzles on your own without having to learn advanced techniques. As another poster mentioned, "Enjoy Sudoku" is a great app to try, as each difficulty level is defined by the techniques needed to solve the puzzle. This should help define for you the boundaries of what you are able to discover on your own.