The rules dictate that a person must be sitting on an office chair that has the ability to adjust height and back rest. It must also be able to spin, that is a must.
To participate you must kick off the floor in a spinning motion (called an "ollie," by the veterans of the sport,) and then bust out some sick, ill moves without putting your feet back on the floor until you wish to "land."
Marks are scored out of ten in three different categories, giving a final score out of thirty. The categories are style (how the boarder incorporated the adjustment features in their spin), revolutions (how many times the chair spins during that one particular move) and pizazz (leg grabs, flip reverses, any sick move that your ill mind can think of).
Points are deducted for falling off the chair, bad pizzaz (bizazz if you will) and doing a crap landing (the pros call this, "bailing.")
The sport is still in it's infancy but I suggest you join up now so in five years when it's all the rage you can be like "man, I was chair boarding before you even knew what it was you big gay jaborni.
"Yeah dude, radical to the max!"
"Actually, you can't play because you're a chump who falls of their chair, get some control man."
"Fair point, fair point."