You are on the backup site for For now, not everything may be working right, because this site is also a testbed for newer software than what the main site is running on. If you are not here to test or develop this site, then you should change .org to .com in the navigation bar and go to the main site.

Error!: SQLSTATE[HY000] [2002] Permission denied

Piececlopedia: BD

Historical notes

The BD is a `combination chess piece', used by Ralph Betza in his Chess with Different Armies.


The BD has the combined movement of the bishop and the dabbabah, i.e., it can move an arbitrary number of unobstructed squares diagonally, or it can jump exactly two squares horizontally or vertically, where the square passed by may be empty or occupied.

Movement diagram

The white circles mark the bishops-wise movement, the green circles those to which the BD can jump.

This is an item in the Piececlopedia: an overview of different (fairy) chess pieces.
Written by Hans Bodlaender.
WWW page created: February 19, 2001.