Third Hand declarations can best be considered by dividing them into three classes:—

1. When the Dealer has called one Spade, and the Second Hand passed.

2. When the Dealer has made an offensive declaration, and the Second Hand passed.

3. When the Second Hand has declared.

The distinction between these three situations is so clearly drawn that each is really a separate and distinct subject. They will be taken up seriatim.

WHEN THE DEALER HAS CALLED ONE SPADE, AND THE SECOND HAND PASSED

In the old days, when the Dealer's "one Spade" was without significance, the Third Hand was always obliged to declare, in order to give the Dealer the opportunity to get back into the game, as it was possible that he had great strength. Now the Third Hand recognizes that there is not the least obligation upon him to bid, and that it is inadvisable for him to do so unless his hand be so strong that, even with a weak partner, game is in sight, or unless it be important for him to indicate to the Dealer what to lead if the Fourth Hand make the final declaration.

Should the Third Hand pass, and the Fourth Hand also pass, allowing the one Spade declaration to stand, the liability of the Declarer cannot exceed 100 points, but if the Third Hand bid, the liability becomes unlimited. While the Dealer and Second Hand both have the right to assume that their partners have an average percentage of the remaining cards, the Third Hand is not justified in any such presumption, after the Dealer, by bidding one Spade, has virtually waved the red flag. True it is, a similar warning has appeared on the right, but if both danger signals are to be believed, the only inference is that the strength is massed on the left. The bidding by the Third Hand must, therefore, be of a very different character from that of the Dealer or Second Hand. He should not venture a No-trump unless he have four sure tricks with the probability of more and at least three suits stopped. When in doubt whether to declare No-trump or a suit, it is generally wise for him to select the latter.

Third Hand suit declarations should be made under either of two conditions:—

(a) When the hand is so strong that there appears to be at least a fair chance for game with the suit he names as Trump.