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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Close Neighbors #
Published on December 31, 2022.
Tags: Sudoku, Consecutive Neighbors, CTC Features
Every number must share a side with at least one other consecutive number. For example, 2 must share a side with either a 1 or a 3 (possibly both).