The Saavedra Study
White to play and win, after Saavedra
PlayOne pawn against a whole rook, and the pawn wins. This is the most famous study in chess: walk the checks down the board, dodge the stalemate swindle at the very end, and promote to the piece nobody expects.
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The Saavedra Study
Win against perfect defense
Waking the engine…
The theory
In 1895 a Spanish priest named Fernando Saavedra spotted something in a published draw analysis that every strong player had missed, and chess got its most celebrated four-piece study. White has a pawn on the sixth against a full rook, and wins.
The king walk. After the pawn steps to the seventh, Black's only resource is checks from behind. The white king descends the board on the b- and c-files, choosing each square so the rook never gains a fork or a clean shot at the pawn. Every step is unique: one careless square and the rook gives itself for the pawn with a draw.
The stalemate trap. At the bottom of the board Black unveils the real idea: the rook drops to the fourth rank, and if White promotes to a queen, the rook slings itself in front with a check that cannot be declined, leaving a stalemated king in the corner. Half the beauty of the study is that the obvious move is the losing one.
The underpromotion. A rook on c8 threatens an immediate mate on the a-file while declining the stalemate gift. Black's rook must abandon one duty or the other, and the new rook mops up. Underpromotion is not a curiosity here; it is the only move that wins, and the tablebase agrees down to the last ply.