2 days ago, a user posted they missed a mate in 4. Today, I got the exact same setup, and only saw it in this bullet game because of that post. : r/ chess
What are some great chess puzzle books out there? - Quora
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Mate in Two Moves - Chess exercise book for chess players - 500 Puzzles with answers : Natarajan M: Amazon.in: Books
i have attempted 10,000 puzzles - Chess Forums - Chess.com