Reti's Mate:

This checkmate came from a game played in Vienna 1910 between Réti and Tartakower, Vienna. The checkmate involves white dropping an early checkmate on Black's uncastled King at c7 by White's Queen Bishop at d7 defended and protected by White's Queen Rook at d1 (resulting from castling to Queenside). White's Rook at d1 also takes away an escape square at d7 for Black's King.