When the partner has declared No-trump, and the Third Hand has called two in a suit, the Fourth Hand is in much the same position regarding the advancement of his partner's No-trumper as the Third Hand when the Dealer bids a No-trump, and the Second Hand, two of a suit.[[18] ] The only difference is that in this case there is little probability of high-card strength being developed on the left.
6. WHEN THE DEALER AND SECOND HAND HAVE MADE OFFENSIVE DECLARATIONS, AND THE THIRD HAND PASSED
It is an exceptional hand which justifies taking the partner out of a suit declaration, called over a No-trump bid by the Dealer. The partner has the advantage of sitting over the Dealer, while the Dealer would have this same advantage should the Fourth Hand declare some other suit.
In this position the partner having bid two Clubs or Diamonds, the Fourth Hand, with the other three suits stopped, is justified in assuming that the original No-trump was made with the minimum strength, and the chance of game, as the declaration stands, being remote, should try a bid of two No-trumps.
When the Dealer has declared a suit, and the Second Hand, No-trump, the Fourth Hand should overbid the Second with a suit declaration (except, of course, in the almost inconceivable case in which the strength of the Fourth Hand is in the suit named by the Dealer), with the same holding that the Third Hand is justified in overbidding the Dealer's No-trump.[[19] ]
7. WHEN THE DEALER AND THIRD HAND HAVE MADE OFFENSIVE DECLARATIONS AND THE SECOND HAND PASSED
In this case, both adversaries having shown strength, and the partner weakness, it is dangerous for the Fourth Hand to declare, and he should do so only when his holding convinces him that his declaration is not likely to be successfully doubled.
8. WHEN ALL THREE PLAYERS HAVE MADE OFFENSIVE DECLARATIONS
This case is entirely analogous to the second round or late bidding, and is covered under the head of Continuation of the Bidding.