The most powerful piece in Chess is without a doubt the Queen. The Queen combines the powers of the Bishop and the Rook – she can move vertically, horizontally, or diagonally for as many squares as she wants.  The only ability that the Queen doesn’t have is to hop pieces. Only the Knight has this attribute. However, due to the knight only being able to move in an ‘L’ pattern, it doesn’t have nearly the same versatility as the Queen.