What is "hiashatar"

Hiashatar is a medieval chess variant played in Mongolia. The game is played on a 10 x 10 board. The pieces are the same as in chess with the exception that there is an additional piece which is called the "bodyguard" . The starting position is similar to chess, except that a bodyguard each is placed between king and bishop and between queen and bishop with a pawn in front and there are two more rows in the middle. The game is not as popular as western chess or Shatar.