Sudoku by Sam Cappleman-Lynes - The Art of Puzzles | The Art of Puzzles
Sudoku Puzzle of the Week | Education World
Sam Trenholme's webpage
Nasty. This is an Almost Hidden Set (AHS) net with several splits. If you can follow it, I'm impressed. Start: If not 56 almost hidden pair. End: Then 2, 1, 9 row 7. : r/sudoku
500+ Sudoku Puzzles: Easy, Medium and Hard Sudoku Puzzles. Have Fun and Play Brain Games - Brain Workout a book by Sam Allenby
An Interesting Classic Sudoku for the more Intense Solvers : r/sudoku
Solving Samurai Sudoku Puzzles
Pitstop Anti Diagonal Ser.: Samurai Sudoku - 250 Anti Diagonal Puzzles - Silver - 9 X 9 X 5 : Sudoku Samurai - Time-Tested by Andrii Pitenko (2018, Trade Paperback) for sale online | eBay