Is there a choice to 3♣?
Does 4♠ describe South's shape and strength?
Is there a better way to get to the slam?
How do you play after a diamond lead?
I forgot to ask, is 6NT better than 6♦ from North's point of view?
I might post some continuations depending on the line chosen.
Oh, and I got it from a teaching table at BBO (random hand, not prepared), not a textbook.