Basic mates, opposition, and endgame principles.
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- What is a back-rank mate?
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Checkmate of a king trapped on its back rank by a rook or queen, with escape squares blocked by its own pieces.- How do two rooks deliver mate against a lone king?
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They drive the king to the edge of the board, then deliver mate with one rook while the other controls escape squares.- Define opposition in chess endgames.
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A situation where two kings face each other with one square between them; the side not to move has the opposition.- What is zugzwang?
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A position where any move worsens a player's position; the player to move is at a disadvantage.- What is the Lucena position?
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A key rook endgame where a side with a rook and passed pawn stops the opponent's rook on the 7th rank using a 'bridge' technique.- What is the Philidor position?
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A defensive rook endgame where the defending rook stays on the 6th rank to hold a passed pawn and keep the king mobile.- What are key squares in pawn endgames?
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Squares that if occupied by the attacking king guarantee a win by promoting a pawn or winning the defending pawn.- Define a trebuchet in pawn endgames.
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A situation where two opposing pawns are directly adjacent and the side to move loses their pawn to capture.- What is a passed pawn?
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A pawn with no enemy pawns on its file or on the adjacent files in front of it.- In king and pawn versus king, what principle determines if the advancing side wins?
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The rule of the square: if the defending king can enter the square formed by the pawn and promotion square, it can catch the pawn.- What is stalemate in chess?
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A position where a side to move is not in check but has no legal moves available; it results in a draw.- What is the 'building a bridge' technique in rook endgames?
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A defensive technique where the rook moves in front of its own pawn to block the opponent's rook and support the pawn's advance.- Why is a rook on the 7th rank powerful in endgames?
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It restricts the enemy king, attacks pawns on the second rank, and is worth approximately the exchange (rook for minor piece).- What is triangulation in chess endgames?
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A maneuvering technique where a player gains a tempo by using three squares in a triangle pattern, forcing the opponent into zugzwang.- What is shouldering in rook endgames?
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A technique where the attacking king uses its body to physically block the defending king's access to key squares.
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