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.)

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.

Image of 'X-Lines Sudoku' puzzle