Cliff Pickover on Twitter: "A "mate-in-546" position, which with perfect play is a forced checkmate in 546 moves. https://t.co/XNjNTbhnuk https://t.co/syvblVv12w" / Twitter
Who wins from this (Puzzle)? - Chess Forums - Chess.com
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Overhead schematic of apparatus used to study social influences on mate... | Download Scientific Diagram
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White to mate in 549 - Longest 7-piece forced mate sequence : r/chess
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White to mate in 549 (Prompt: there is a knight underpromotion on the 6th move). This is the longest possible forced mate in 7 or less pieces endgames. It was calculated by a supercomputer. Visualized solution and PGN are in the comments. : r/chess