I bought Descent 2 recently and got a chance to have an extended gaming session with it yesterday.

I was playing "Death on a wing" and a hero figure was in the chasm.

He had a boulder in front of him and a boulder to his left.

My question is, can he move diagonally left forward to an empty space, moving diagonally in between the boulder in front of him and to his left? I appreciate he could just try climb over it, but ignore that for now.

I think he could NOT move diagonally through there as all edges are blocked.

Also one of the printed map has a row of diagonally placed rubble with RED borders around it. Is all movement and LOS blocked?

I also believe in this case movement and LOS is blocked.

My understanding is that corners are ok to move through. Block areas work more for LOS regarding attacks and set ups.

I actually just played Death on a wing as the overlord, the first part was very difficult to win, so I made it my goal to grab as many overlord cards as possible saving them for the next encounter. While I was trying to win, my goal was to simply place all boulders on the map as blocking them was too difficult. But eventually I got all the cords and he was able to smash them without a problem

Hmm, pretty sure it said in the rules that if all edges are blocked (meaning all the diagonal portions of the the block are blocked) then it's impassable.

I can see how you could go diagonally around a corner, as that's an open corner, but don't think a line of boulders counts as the same.

danskmacabre said:

But p. 8 says : "However, figures may move diagonally (including around corners and between two blocked spaces)"

The movement example p. 9 shows that Grisban can squeeze between the goblin and the map edge common corner.

Yes that's a good point, I think you're right.

Thank for your views on this

danskmacabre said:

Before we started our campaign I sat down with the players, showed this tile, and had the conversation about whether that should be considered blocking, contiguous terrain. All agreed it should, so in our games, there is no shooting between these or squeezing through, you have to go around.

Which is much better in my eyes, as blocking terrain like this barely blocks anything - it's almost impossible to NOT be able to go corner to corner for LoS legally, if you consider it can be drawn between the gaps.

I personally don't house rule anything, unless I find the problem unsuperable.

Playing historical wargames, where "reality arguments" could perhaps seem more valuable, I don't house rule either.
So, in a fantasy environement, I try even more not to let my "sense of reality" influence me to house rule.

Now, as long as everyone agrees about the adaptations to the original rules, it is just a question of freedom of choice (with the caveat that some changes could have a heavy impact upon the balance of a tactical situation).
In the specific case of "corner squeezing" movement, not allowing it makes some moves much more difficult… You can much more easily stop an enemy who wants to cross your lines - it could have an important impact when you try to block the access to the exit, etc.
In Death on a wing, the OL simply places the boulders diagonally in the canyon to block normal movement.
It makes that encounter more difficult for the heroes (but in that case, it could be a good balancing house rule, as the encounter favours, it seems, the heroes).