Snake & Ladder OOAD

I'm trying to learn Object Oriented Analysis and Design by myself and I've read many book that anything starts with use-case, obviously using UML's use-case diagram.

http://audinue.navhost.com/Snake_and_Ladder.gif

Is it a right diagram?
Where do I draw the gameplay?


Any clues will be appeciated.

You don't really, unless "gameplay" is a use-case.

Or if you wanted to, you *could* include "move token" or some such. But that's probably handled by the system.

I think the question should be:

Where should I draw the gameplay?

Forgive me, zacs7.

Not there, because it's not user <-> system interaction in itself.

IMO, "Gameplay" is not a use-case in this case.