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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
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Is it a Convention for Mate in X (where X>1) Puzzles to Start with Check? - Chess Forums - Chess.com
![construction - What chess position has the longest string of moves before mate? - Puzzling Stack Exchange construction - What chess position has the longest string of moves before mate? - Puzzling Stack Exchange](https://i.stack.imgur.com/6f5EP.gif)