Divinanza

Do the men know which apartment they are taking the couch to?
If so, do they know that the doors they skip aren't the right apartments?

Does the construction of the couch mean it will only go through a door that hinges in a particular way (i.e. every second door)?

Do the men want to find something in one of the apartments they knock on which helps to deliver the couch?
Are the men able to reach the stairs where they need to deliver the couch?
Do at least one of them live in that block of flats?
Do they need to deliver the couch to one of their apartments?

Do the men know which apartment they are taking the couch to? YES
If so, do they know that the doors they skip aren't the right apartments? YES

Does the construction of the couch mean it will only go through a door that hinges in a particular way (i.e. every second door)? NO

Do the men want to find something in one of the apartments they knock on which helps to deliver the couch? SORT OF
Are the men able to reach the stairs where they need to deliver the couch? CLARIFY (YOU MIGHT BE CLOSE!)
Do at least one of them live in that block of flats? IRRELEVANT
Do they need to deliver the couch to one of their apartments? IRRELEVANT

Originally posted by iamatiger
Are the men able to reach the stairs where they need to deliver the couch? CLARIFY (YOU MIGHT BE CLOSE!)

do the men need information from the peeps in the apartments?

Is the problem that the apartment doors open OUTWARDS, not inwards?

Do the men even know where the stairs are? YES

do the men need information from the peeps in the apartments? NO (not information)

Is the problem that the apartment doors open OUTWARDS, not inwards? NO, that's not the problem

Are the men able to reach the stairs which leads to the apartment where they need to deliver the couch?
Are the men able to reach the floor of the apartment where they need to deliver the couch?

Are the men able to reach the stairs which leads to the apartment where they need to deliver the couch? YES
Are the men able to reach the floor of the apartment where they need to deliver the couch? NO!

Are the men able to deliver the couch without knocking on the other doors?

Is the couch to big to get it to the floor of the apartment where they need to deliver the couch?
Is the couch to heavy to get it to the floor of the apartment where they need to deliver the couch?
Is there a stair which leads to the floor of the apartment where they need to deliver the couch?