Rey's Puzzles
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.)
Push #
Published on May 24, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Kropki

6:13 #
Published on April 16, 2023.
Difficulty: 3
Tags: Sudoku, Anti-Knight, Killer Cages
Conjoined #
Published on April 4, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages
Minutia #
Published on March 21, 2023.
Difficulty: 1
Tags: Sudoku, Killer Cages, Diagonal

Wings #
Published on March 18, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Diagonal

Cars #
Published on March 5, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Kropki

X-Lines Sudoku #
Published on February 14, 2023.
Difficulty: 4
Tags: Sudoku, X-Lines, Killer Cages
On an X-Line, if X is on the line then so must 10-X. Digits may repeat on a line, so 1159 would be a valid X-Line.
Class of '23 #
Published on February 11, 2023.
Difficulty: 3
Tags: Sudoku, Killer Cages
El Corazón #
Published on February 8, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Thermometers
Stairs #
Published on February 6, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Diagonal
Highway #
Published on February 1, 2023.
Difficulty: 2
Tags: Sudoku, Killer Cages, Diagonal
That's What I Mean #
Published on December 28, 2022.
Difficulty: 2
Tags: Sudoku, Killer Cages, Averaging Cells
Numbers in a blue circle are the arithmetic mean of its orthogonal neighbors.

7-Eleven #
Published on December 8, 2022.
Difficulty: 3
Tags: Sudoku, Killer Cages
The digits orthogonally adjacent to a 7 must sum to 11.