We had an argument about an adjacency question in the board game Mansions of Madness. In the "Escape from Innsmouth" scenario the upper left corner of the map looks like this:
The question is whether you can move from B to C directly, in other words whether those two spaces are adjacent. I argued that they are separated by a gray border (meaning a border between outdoor spaces), so they are adjacent spaces and a player or creature can move directly between them.
Everyone else in the group took the position that even though the curvy line did not match up to the corner with the library, that it was the intention of the game designers for it to be considered a mutual corner. Therefore, a player can only move between A and B or between A and C, and that it is not allowed to move directly between B and C.
Who is right?