Should the player be forced to lead any of the undesirable combinations shown on the last page, he would begin with the Ace if he held it; otherwise he would lead the fourth-best. In each of the hands shown this would be the four, and this card would be led, even if there were five or six cards in the suit. From this hand, for instance, the five is the proper lead:—
Rules for Leading Second Round. If the leader wins the first trick, having the best of the suit in his hand, he should follow with the winning card; but if he has several cards which are equally winning cards, he should lead the lowest of them. This is an indication to the partner that the card led is as good as the best; therefore the leader must hold the intermediate cards. When a King wins, your partner knows you have the Ace, if he does not hold it. Then tell him what he does not know, that you have the Queen also.
Suppose you have led the King from these combinations:—
Your partner knows you have the Ace, because your King wins. From the first, go on with the Jack, which is just as good as the Ace, but tells your partner you have not only the Ace but the Queen, still in your hand. From the second, go on with the Queen, the card your partner does not know, which tells him you still have the Ace, but not the Jack. If you have not the Queen, you will have to go on with the Ace, and your leading the Ace will deny the Queen.
If you have not the best, lead one of the second and third-best, if you hold both:—
From the first of these, having led the King, if it wins, go on with the ten, whether you have any smaller cards or not. From the second, if the King wins, go on with the Jack, which denies the ten, but tells your partner you still have the Queen. No mistake is more common among beginners than leading a low card on the second round, on the assumption that the partner must have the Ace. If you have led from King and Queen only, you must go on with the fourth-best; because you have not both the second and third-best. This fourth-best is the card that was the fourth-best originally. Having led the King from this:—
