Reach weapons and flanking

[fraserstanton]

In first edition, reach flanking worked across corners, but it seems in second edition it does not.

First Edition wrote:

If the line passes through opposite borders of the opponent’s space (including corners of those borders), then the opponent is flanked.

Second Edition wrote:

A line drawn between the center of your space and the center of your ally’s space must pass through opposite sides or opposite corners of the foe’s space.

e.g. if you had a fighter (Ft) against an Orc (Or), where could you get ranged flanking from?

A1 A2 A3 A4 A5
B1 Ft Or B4 B5
C1 C2 C3 C4 C5

Just B4 and B5, or also A5 and C5 (like it does in first edition)?

What about this example, with a halberd wielding fighter, where would another fighter (5 or 10 ft reach) have to stand to get flank from?
A1 A2 A3 A4 A5
B1 B2 Or B4 B5
Ft C2 C3 C4 C5

5ft reach A4? B4?
10ft reach A5? B5?

[Franz Lunzer]

Flanking hasn't really changed between editions. In both, the line has to be drawn between the centers of the attackers squares, and has to go through opposite sides, or opposite corners.

So in both editions, on a map A1 to E5, if the opponent is in C3, with 5 ft reach the attackers are only flanking win these pairs: B2&D4; B3&D3; B4&D2; C2&C4....

With one attacker 5ft. reach, the other 10ft. reach, flanking is achieved in these pairs: A1&D4; A2/3/4&D3; A5&D2; B1&C4; B2&E5; B3&D2/3/4; B4&E1; B5&C2; ...

With both attackers having 10ft. reach, the possible pairs are: A1&E5; A2&E4; A3&E3; A4&E2; A5&E1; B1&D5; B5&D1; C1&C5;...