Anastasia’s Mate is a pattern where a knight and a rook combine to mate a king pinned against the edge of the board, usually the h-file.
The knight is the key: parked on e7, it covers the g8 and g6 squares, fencing the king onto the h-file. The rook then swings to the h-file and delivers mate with no escape.
It typically appears when the defending king has castled and a pawn (often on g7) seals one flight square while the knight covers the others. The rook’s arrival on the h-file is the finishing blow.
The name comes from a 19th-century novel, but the mechanism is pure tactics: a knight that takes away the escape squares plus a rook that hits the open file beside the king. Learn the knight’s job and the pattern jumps out at you.
A knight on e7 (or the mirror square) controls the squares beside the king, so when the rook checks down the h-file the king has nowhere to run.
Anastasia’s Mate pins the king to the edge file with a knight and rook; the Arabian Mate corners the king and uses the knight to guard the escape next to a rook on an adjacent rank.
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