Riders.

What's a rider?

Riders move endlessly as one piece. Examples include the Nightrider, a piece that moves like a Knight endlessly. In Betza's notation, a piece that is a rider can be represented as the notation of the piece in question twice, such as WW for a Wazir-rider, which is just a Rook. A King-rider (KK in Betza's notation) would technically be a Queen, as it moves endlessly in any direction, as the King moves one space in any direction.

A billion examples of riders.

Here's a couple of riders for you:

1. Rook - Moves horizontally or vertically as many spaces as it wants, like how the Wazir moves this way only 1 square.
2. Bishop - Moves diagonally as many spaces as he desires, like how the Ferz (appeared in Chaturanga, an ancient form of chess) moves to any adjacent diagonal square.
3. Queen - A compound of the Rook and Bishop, like how the King is a compound of a Wazir and Ferz.
4. Every leaper I brought up last post has a rider variant, besides compounds.
5. Queen of the Night - moves as queen or nightrider, like how the General moves as king or knight.
6. Cardinal-rider - moves as a bishop or nightrider
7. Chancellor-rider - moves as rook or nightrider

The end.