Knight (chess) of chaturanga in India around the 6th century. Similar pieces are found in almost all games of the chess family. The "ma" of xiangqi and janggi are slightly more restricted; conceptually, the piece is considered to pass through the adjacent orthogonal square, which must be unoccupied, rather than "jumping". Another related piece is the "keima" of shogi, which moves like a knight but may only move two squares forward followed by one square sideways, restricting its movement to two possible squares. Unicode defines two codepoints for knight: ♘ U+2658 White Chess Knight (HTML ♘) ♞ U+265E Black Chess Knight (HTML
Empress (chess) attacking archbishop two squares diagonally away), while the rook+knight compound cannot. Worse, the word empress suggests a piece stronger than the queen, while this piece is at best equal to and perhaps weaker than the queen, especially in the endgame. The empress was first used in Turkish Great Chess, a large medieval variant of chess, where it was called the "war machine" (dabbabah; not to be confused with the piece more commonly referred to as the dabbaba today, which is the (2,0) leaper). It was introduced in the West with Carrera's chess from 1617, where it was called a "champion",