After reading the info, I'm pretty sure that Selby's program is not necessarily correct for multiple betting rounds. For example, if you run with
num d=2 nr=4
(Players are given 0, or 1 where 1 beats 0, and there can be up to 4 raises)

Then you get:
Small Blind Call/Fold with 0
Small Blind Raise/Call with 1
Big Blind Fold to a raise with 0 but check/call otherwise.

Which is clearly non-optimal, since the big blind could raise after a call to push the small blind out.