The solution for our real 3d-space looks probably a lot different: https://mathoverflow.net/questions/246914/sofa-in-a-snaky-3d-corridor https://mathoverflow.ne

The solution for our real 3d-space looks probably a lot different: https://mathoverflow.net/questions/246914/sofa-in-a-snaky-3d-corridor https://mathoverflow.net/questions/246914/sofa-in-a-snaky-3d...