The most powerful piece on the chess board is the Queen. The Queen holds the most value (a total of 9 points) on the chessboard because she can control up to a maximum of 26 squares. The position of the Queen is next to the King. The Queen is allowed to move in any direction and take as many moves as she likes. This makes her extremely powerful and fearful, so it is crucial that players safeguard the Queen as much as possible and not allow any harm to come to her.

Source: Hercules Chess