Rated 'mate in 4' chess puzzles

Mate in 4 Chess Puzzle 1 - Brain Easer

Mate in 4 moves puzzles 11 to 20

Mate in 4 Chess Puzzle (1800 Rated)

Mate in 3-4 (Chess Puzzles) - Apps on Google Play

500 Chess Puzzles, Mate in 2, Beginner & Intermediate Level: Solve chess problems and improve your chess tactical skills by Chess Akt, Paperback

Mate-in-4 Chess Puzzles

Mate in 4 chess puzzles Archives - SparkChess

Chess Tactics Pro (Puzzles) - Apps on Google Play

Checkmate Problems Worksheets - Chess Puzzles! : Chess Puzzles!

Checkmate In 4 Moves: How To Avoid Scholar's Mate - way2wise