Difficulties are marked according to the Logic Masters Germany scale. These are just my best guesses, so please let me know if you have a different opinion!
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Distant Neighbors #
Published on January 2, 2023.
Tags: Sudoku, Dutch Neighbors
Every number must be adjacent to at least one number 4 away from it. For example, 4 must share a side with either a 8 or a 9 (possibly both).