New twist on sofa problem that stumped mathematicians and furniture movers

Some discussion already over here:

https://news.ycombinator.com/item?id=13922567 (7 comments)

Interestingly I posted[0] a link to exactly this story[1] from a different source around 12 weeks ago - it sank without trace. I wonder if this will fare better ... it's an interesting problem.

[0] https://news.ycombinator.com/item?id=13263532

[1] http://blogs.ams.org/visualinsight/2016/12/15/romiks-ambidex...