Originally posted by mwmillerDraws count as winning the board so a defender must win every game to retain it.
I have not tried sieges but this is how I think it works. Someone else may have a better explanation.
The idea is to become the defender of a particular board and see how long you can hold that board. You do this by defeating the current defender. The defender always plays black against each new attacker.
Go to the end of the waiting list for whichever boards you wish to try and click the link to join the list.