Extremely difficult mate in 1. White to move. : r/chess

White to move, mate in 2 (this had Magnus Carlsen thinking for more than a minute) : r/chess

BRILLIANT Chess Puzzle that Only a SELECT FEW Can Solve - Remote Chess Academy

The Hardest Chess Puzzle - Puzzle Prime

Entropy, Free Full-Text

Chess Tactics Pro (Puzzles) – Apps on Google Play

Champions Chess Tour on X: .@DavidHowellGM said this is the most difficult mate in two he had ever seen then he solved it in like 20 seconds. Can you solve the checkmate

Brilliant moves aren't all that brilliant - Chess Forums

In this position, black to move resigned. Easy puzzle: why did he resign? Hard puzzle: what winning move could he have played instead of resigning? : r/chess

8 Chess Openings You Must Learn if You Care About Improving, by Quinn Bunting, Getting Into Chess

10 Hardest Mate In 1 Chess Puzzles That'll Make Your Head Spin – Maroon Chess

Chess: Carlsen and Nakamura outwit young guns in offbeat Airthings Masters, Magnus Carlsen

Hardest mate in 2!!! - Chess Forums