Here is the actual deal that our opening lead problem was based on. Maybe you won’t agree with the bidding, but the bidding of opponents is not your concern, only what you can infer from it. I believe that the opening lead against the bidding that took place is not difficult to find IF you take notice of the bidding and the correct inferences. Let me repeat the bidding: 1S from West, 2NT from East, 6NT from West. Looking at the South hand, what should you be thinking? I was hoping that at least one of my readers would find the correct answer, and I do believe that there is only ONE card that South should lead.
Dealer W Nil Vul
The closest to the right (and you will agree that there IS a RIGHT when you read on) answer came from one of the many readers who would lead the ten of hearts. His rationale was perfect up to a point but he missed the punchline.