In SBME, I gave the convention 5NT Pick a Slam 
                  my highest rating. I said, “Although it doesn’t occur as often 
                  as other slam conventions, it is still my favorite.” Why is 
                  that? Because both 
                  players are involved in the decision-making 
                  process, the partnership will arrive at the final contract 
                  only after mutual agreement.
                  Why is this convention necessary? Most of the 
                  time:
                  • Taking 12 tricks without a trump suit is
                  not easy.
  It is much easier to take 12 tricks in a suit contract;
                  • Hands with a singleton play better in a suit 
                  contract;
                  • If you have the necessary strength and 
                  controls, 
  12 tricks are available in at least one of the suits – 
  even if it is only a 7-card fit.
                  The convention works like this: When you know 
                  you belong in a small slam, but don’t know where to play, a 
                  jump to 5NT asks partner for a suggestion.
                  After the 5NT Pick a Slam bid, partner can 
                  suggest
                  a suit he is willing to play in. Possibilities 
                  include:
                  • Mentioning a new suit.
                  • Showing mild support for a suit you bid.
                  • Rebidding one of his suits with extra length 
                  or
  strength in that suit.
                  • Bidding 6NT if he has nothing worth 
                  mentioning
  or is positive that the 
                  hand belongs in notrump.
                  When playing 5NT Pick a Slam, you must 
                  remember:
                  • The 5NT bid is forcing;
                  • 5NT denies interest in a grand slam.
                  5NT Pick a Slam is unfamiliar to many players, 
                  so I will illustrate the convention with several examples.
                  1.