Ferz

The ferz or fers is a fairy chess piece that may move one square diagonally.

The Thai variant of chess, makruk, retains the ferz from shatranj as the "Met", both as a starting piece and as the only pawn promotion option.

In modern Eastern Slavic languages, however, ferz (ферзь) is the current name for the chess queen.

Despite being colorbound, the ferz is the strongest of the basic leapers during the opening phase of the game, even stronger than the wazir, due to its larger mobility forward.

While a knight and wazir can usually force checkmate against a bare king, a knight and ferz can only do so if the bare king is significantly close to a corner that is the same color square as that of the ferz.