diagonal moving in difficult terrain

[hiitsnick1]

woot 15 playin d&d for 6 yrs now(first post) uhh well we had an arguement when we were in difficult terrain and we wanted to move with the diagonal spaces and i just want to know how many 5ft equivalents are in each square for the first diagonal and all after that plz let me know thx

 

[MarkB]

Normally, every two diagonals you move cost you 15 feet (5 for the first, then 10 for the 2nd, then 5 for the 3rd, then 10 for the 4th, etc.). Thus, moving two squares diagonally costs 15 feet of movement.

The rules for difficult terrain say that each square costs 2 squares' worth of movement, so moving one square diagonally in difficult terrain costs as much movement as moving two squares diagonally through normal terrain - 15 feet.