Four minutes and sixteen seconds, apparently. I just improvised the descriptions since I don’t know what the canonical ones are supposed to be.
"Cloak Speedrun" by "Daniel Stelzer"
The Foyer of the Opera House is a room. "This is the foyer where you've just come in out of the rain. Doors lead south, west, and north.".
Instead of going north in the Foyer: say "But it's raining out there, and you just got dry!"
The Bar is south of the Foyer. It is dark. "This is the bar. It's empty with everyone gone for the night."
Some sawdust is fixed in place in the Bar. The sawdust can be scuffed. The sawdust is not scuffed.
Before doing anything except going north when the location is the Bar and in darkness:
now the sawdust is scuffed;
continue the action.
The Cloakroom is west of the Foyer. "This is the cloakroom. Also empty right now."
A small brass hook is fixed in place in the Cloakroom. It is a supporter.
The player wears a velvet cloak. The description of the cloak is "The light from the room seems to be drawn in and swallowed by the fabric."
Before going to the Bar:
if the cloak is worn, now the Bar is dark;
otherwise now the Bar is lit;
continue the action.
Instead of examining the sawdust:
say "There's a message spelled out here...";
if the sawdust is scuffed, end the story saying "You have lost";
otherwise end the story saying "You have won".