For touching an adversary's man, when it cannot be captured, the offender must move his King.
Howard StauntonEach player, it will be observed, has eight superior Pieces or officers, and eight minor ones which are called Pawns; and, for the purpose of distinction, the Pieces and Pawns of one party are of a different color from those of the other.
Howard StauntonA Rook is of the value of five Pawns and a fraction, and may be exchanged for a minor Piece and two Pawns. Two Rooks may be exchanged for three minor Pieces.
Howard StauntonThe Bishop and Knight, in contradistinction to the Queen and Rook, are called Minor Pieces.
Howard Staunton