There is a Bugbear occupying a ten foot square, (lets say four 5 foot squares).

Another Bugbear wants to enter the area, but the Rules Lawyer says it can't because the first Bugbear occupies the original ten foot square.

I get that a Bugbear is large, (7 feet tall). But I don't get that it should be 10 feet wide (or even larger than 5 feet wide), thus preventing the second Bugbear from entering the same ten foot square.

Does anyone know that rule?

Actually it's HackMaster, the parody of 1st Ed. The only thing I can find on the topic is number of figures (Medium versus Large) that can be around it.

I want to say it can pass through, but can't stay there. But don't ask me to look up a chapter-and-verse on where it says that. 'cause I think it's a 3e/d20-the-grid-is-optional-but-it-really-isn't-ism.

Thanks. That's what the Players were saying was their opinion. But also said 3.5 or Pathfinder was their source. I didn't want to accept it, but it seems 1st & 2nd Ed. has the issue undefined. I'm normally unwilling to adopt later edition rules unless absolutely necessary.

Later edition or not, it does at least make sense, in the common-sense sort of way. Now, attacks of opportunity, on the other hand..... :roll:

Attacks of opportunity are where HackMaster excels (presuming there was a fumble).

There are whole sections and tables for fumbles. Even Monster fumbles without weapons tables.

The Combatants Guide also has a section for fighting withdrawals, so you don't always have to go through attack of opportunity for turning to retreat.