What is 'back-rank mate' in chess?

Quiz Options

• A checkmate delivered by a pawn
• A checkmate delivered by a rook or queen on the opponent's back rank
• A checkmate involving two knights
• A checkmate from the very beginning of the game

Explanation

A back-rank mate occurs when a rook or queen delivers checkmate on an opponent's back rank, and the king is blocked from escaping by its own pawns.