Queen's Gambit Declined: D40-D49 455 Characteristic Chess Puzzles by Bill Harvey 9781546709916 | eBay
Some data regarding the correlation of puzzle rating to rapid rating on chess.com : r/chess
I designed a puzzle, enjoy!!! Pretty epic! - Chess Forums - Chess.com
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