5 cool puzzles I extracted from my own tournament games - Chess Forums - Chess.com
John Nunn's Chess Puzzle Book - Chessable Blog
Chess Puzzles - Daily Chess Challenges for all Levels
December 2020 Chess Puzzle Answer Key | Saint Louis Chess Club
500 Chess Puzzles, Mate in 1, Beginner Level: Solve chess problems and improve your tactical chess skills (I'm progressing in Chess): Akt, Chess: 9798729228126: Amazon.com: Books
sharath_dt's Blog • Chess puzzles that are printable PDF • lichess.org
Chess Puzzles - Daily Chess Challenges for all Levels
On the topic of puzzle rules, I would like to revisit this amazing puzzle problem, that deals with the somewhat ambiguous nature of puzzles! White to move and mate in 2 :
Are Puzzles Useful For Chess Improvement? (Hint: YES!)