Britannica Sources used in this answer

How did stronger queen and bishop moves change chess games after 1475?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

A chessboard showing the standard starting position for a game, with white and black pieces arranged in two rows on each side: rooks, knights, bishops, queen, and king on the back row, and pawns in front. — chess Position of chess pieces at the beginning of a game. The pieces are placed on the two ranks closest to the player. In the closest rank, pieces are arranged from left to right: rook, knight, bishop, queen, king, bishop, knight, and rook. In front of that rank, each square has a pawn.

After 1475, two critical rule changes fundamentally transformed chess from a slow-paced game of "trench warfare" into a dynamic contest where checkmate could be achieved much more rapidly.1

The Queen: The piece previously known as the counselor, which was limited to moving one square diagonally, was replaced by the modern queen. This piece gained vastly increased mobility, becoming the most powerful force on the board.1
The Bishop: The piece derived from the chaturanga elephant, which was previously restricted to a two-square diagonal jump, became the bishop. This change more than doubled its range.1

These enhancements, combined with the increased strategic value of pawn promotion—as pawns could now promote to the powerful new queen—shifted the nature of the game. Before these changes, games were often decided by "baring the king" (capturing all of an opponent's pieces), but the increased power of the queen and bishop made checkmate a common and swift occurrence.1