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!
All OctoPuzzles links come with walkthroughs if you need help at any point. (Not all puzzles have OctoPuzzles links.)
Published on April 22, 2023.
Tags: Sudoku, Arrows, Quads
Published on February 17, 2023.
Tags: Sudoku, Thermometers, Quads