Ovinomancer
No flips for you!
I have a puzzle example that came up in a game of mine a couple years back:
DM: "There is a flat surface with numerous round dips in it, all arrayed to form a kind of grid with 5 columns and 5 rows . At the top there is one long dip running the width of the grid. Next to this trench is a small round device that looks like a metal snail shell oriented with the opening sloping toward the trench. The device has a button on it. What do you do?
Player of Character With Riddling Skill because HackMaster: "I push the button."
DM: "Five equal-sized metal balls roll into the trench."
PCWRSHM: "I..."
Interrupting other Player:(excitedly) "Star! Ooh!..."
PCWRSHM: "What?"
IP: "Heh, sorry. Make a star?"
<The result of attempting this solution and the interrupting player's character stats are omitted intentionally>
Does this strike anyone as a situation where I should call into question whatever the interrupting player's character may have in Intelligence or the Riddling skill? How about outright forbidding the player from their character blurting out those statements on the grounds of Intelligence or Riddling Skill? Or is it just fine for the player to be playing their character in this way?
I allow table talk OOC about in game things. In this case, the table talk would be used by the riddler skill character if they wanted to. The interrupting player's character, however, would not be the one sharing the information.
I've played on hot tables in the past, though, that would have punished the interrupting player if they lacked the sufficient skill to make such a statement with whatever the current stakes were (usually XP loss). Of course, the set up for that game was for heavy roleplaying, and such expectations (along with the stakes for punishment) were clearly laid out so you couldn't complain you didn't know going in. Hit me, once, for muttering, "[expletive], beholders," before it was obvious because I recognized the description of the spell-jamming vessel in the encounter.
So, my answer is really: depends on how the expectations of the group are set up. As I just answered to Iserth, with his expectations and setup, I probably would rule exactly as he does and ignore such interruptions or solutions. I, however, set up a different expectation for games I run.