Puzzle by me. Stockfish doesn't see it at first - black to move and mate in 6. : r/chess
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Chess Puzzles from the Games of Bobby Fischer.

Can chess be solved? – Rising Entropy

Can chess be solved? – Rising Entropy
Can you pass, and choose to move no piece in Chess? - Quora

Stockfish says M1, can't find it. Black to move. : r/chess

Crowded Xiangqi · Issue #180 · fairy-stockfish/Fairy-Stockfish

This puzzle was given to Magnus, its one of the hardest mate in

White to play and mate-even Stockfish doesn't see the win : r/chess

The HARDEST Mate In 2!

I composed a puzzle stockfish can't solve. (Black to play, mate in

I composed a puzzle stockfish can't solve. (Black to play, mate in

How to Castle in Chess: A Chessable's Guide
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