Guest Post 1 - 6 Notrump Double Dummy

You are West, and your task is to make 6NT on best defense. Since this is a double dummy problem, you don't have to think about what the bidding was. Try it with three opening lead conditions:

1. Small club from North
2. Small spade from North
3. Any lead from North (except the ♠A, which is too easy)

Here is the layout:

Bon voyage!

ht to Eli Solomon for this interesting problem!