As of Rules Compendium (only Ess book I've read so far but I just finished it yesterday), SCs are the same as in the last 4e patch, but "fixed" in the following ways:FrankTrollman wrote: That Skill Challenges completely don't work, at all is a really big fucking deal.
They changed the DC chart (again) to widen the spread between easy/moderate/hard; in particular it starts at +7 between mod/hard at 1st lvl and gradually increases through the tiers. (I have no clue how this affects the exact success %ages for the SC, but I assume the goal is to disincentivize "rolling your best skill over and over", when your trained/untrained difference no longer automatically beats a +5 mod/hard spread).
The DC for a paricular skill automatically upgrades from easy/mod to hard as soon as you get 1 success. (naturally this changes the algorithm from "find best skill, roll over and over" to "find best skill, roll until 1 success, find 2nd best skill, roll until 1 success, etc." but I guess it's better than "you must roll a different skill every round")
Anything over complexity 2 is supposed to have arbitrary "advantages" worked into it in some handwavy fashion. (the list of advantages includes the Obsidian "2 successes on a crit" thing and similar stuff; the book doesn't have of the SC "templates" or Mearls examples, so unless there's more in the DM Kit you're pretty much on your own on how to do this)
Aid another DCs now increase with level, and inflict a -1 to the main check if you miss. (another reason to rage at sliding DCs but whatever)
Beyond that I think SCs are the same; it's still 4+2n successes/3 failures, no formal round structure or fixed number of rounds, etc. Footnote is that the rules now say the party gets the full XP even if they fail the challenge. (old-school DMs commence teeth gnashing) "Partial victories/failures" are mentioned but not spelled out.