Hardest Mate-in-One | #Shorts March 19, 2021 NHaselton Chess Lectures ♛Ready to play?Play and learn chess for free on Chess.comPlay on Chess.com → National Master Caleb Denby shows you the hardest checkmate-in-one ever. 2021.03.02 ♟ More videos — same channelAre You a Chess Beginner? Click Here.Aug 12, 2026I’ll never stopAug 12, 2026I’ll Make You BEAT Your Friends in Chess.Aug 9, 2026I GAINED 100+ ELO IN ONE DAYAug 8, 2026