North's 5NT asked for any side-suit king to be named. Just as important, it told South that all the key cards were held. If South's diamonds had been solid, he could then have bid 7H. How would you play 6H when West leads the king of clubs? If the queen of diamonds falls in two rounds, 13 tricks will be easy. When the cards lie as in the diagram, it requires careful play to make even the small slam. You win the club lead and play the king and queen of trumps, West showing out on the second round. Now you must switch to the diamonds. You play a diamond to the ace, ruff a club in dummy and lead a second round of diamonds. If East ruffs a loser in the second seat, he will make life …