No part of chess repays study more than the endgame. The endgame starts when the forces are so reduced that making attacks are no longer worth trying; mates are possible but only through the victim's overlooking them. As a main objective, that of mate is replaced by pawn promotion - CJS Purdy Guide to Good Chess
Diagram - White to move (a) Rb7+ or (b) Kf4 or (c) h4
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* Another ChessWorld conversation during a game between 2 American players.
Topic ? Not the weather but something equally topical