The most difficult mate in 3 on the Lichess puzzle database : r/chess

Hardest mate in 3 I've ever encountered. White to play. : r/chess

2900 + , The highest rated and hardest puzzle, I ever seen in lichess • page 1/2 • General Chess Discussion •

White to move on this 2200 rated puzzle on Lichess : r/chess

Hardest mate in 3 I've ever encountered. White to play. : r/chess

What is the hardest mate-in-3 puzzle? - Quora

Mate in 3, Black moves. (Just happened to me and I failed to see it) : r/ chess

Mate in Three with a Promotion Chess Puzzle - SparkChess

3 Hardest Mate-in-3 Ever: Part 4 - TheChessWorld

One chess puzzle per day : r/chess

White to play and mate in 3. : r/chess

Puzzle from Al-Adli's „Book of Chess“ (842 AD) - white to mate in 3 : r/ chess