Amazon.com: 100 Headachingly Hard Mate in Two Chess Puzzles Composed by Sam Loyd: Improve Your Ability to Calculate Variations and Finding Checkmate eBook : Justesen, Martin B.: Kindle Store
White to move and mate in two (Chess24 puzzle for Champions Chess Tour) : r/chess
Mate in 2 moves puzzles 41 to 50
Free Checkmate Problem Worksheets! ♞ Chess Puzzles!
Checkmate in Two Puzzles Test (Very Hard) - Chess.com