On the cantina map, there is a back room section that is walled off from the rest of the map except for the difficult terrain of the bar.
[_]I[_] [_]I[_]
[_]I[a] [_]I[_]
[_] I [_] [_]
[_] [_] I [_] [_]
(hope the Fizzgrid comes out OK. )
The blue is difficult terrain, there is a wall to the left of "a", is it possible to go from A to B with a single move point? The examples of movement in the don't explicitly address difficult terrain and the difficult terrain section doesn't address corner cases (ha ha). It doesn't seem logical that you could, but I can't find where in the rules it is prevented.