no computers - Another Easy Mate in 1 - Puzzling Stack Exchange
One of the hardest/trickiest Checkmate in 1 puzzle | Chess Puzzles - YouTube
50 mate in one + 50 mate in two chess puzzles: Inspired by Fabiano Caruana games (How to Learn Chess the Right Way): Rangelov, Andon: 9798540132022: Amazon.com: Books