A cool algorithm to check a Sudoku field?

Question

Does anyone know a simple algorithm to check if a Sudoku-Configuration is valid? The simplest algorithm I came up with is (for a board of size n) in Pseudocode

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Answer 1

Peter Norvig has a great article on solving sudoku puzzles (with python),

https://norvig.com/sudoku.html

Maybe it's too much for what you want to do, but it's a great read anyway