In the first round of a suit, you should generally, / 8. PLAY YOUR HIGHEST CARD THIRD HAND. / a. In order to strengthen your partner. You presume that he leads from his strong suit, and wants to get the winning cards of it out of his way[…]; you, therefore, do not finesse[…], but play your highest, remembering that you play the lowest of a sequence[…]. With ace, queen (and, of course, ace, queen, knave, &c., in sequence) you do finesse, for, in this case, if the king is in the fourth hand, it must make, unless single, which is very improbable; and by putting on the ace, you make the king good, if against you.