If a player is willing and able to meld, he is limited to one meld per opportunity. Of course, it may be a double meld. Once a card is used in some meld, it loses eligibility for later use in another meld of the same point value, but its eligibility for other melds is unaffected. In particular, a card used in a single meld may later appear in the corresponding double meld. Melding a card does not affect the eligibility of the card identical to it.
All eligibility is restored at the beginning of each battle.
Throughout the battle, each player is entitled to ask his opponent how many cards are in opponent's hand, and to receive an accurate answer. By the same token, if a player volunteers this information about his own hand, it must be accurate. Either player may count the cards in the stock when desired. The last two examples would sometimes be incorrect if deuce and nine were not single ranks. Player cannot combine the concealed AC with the exposed TC because the TC was already used in a C2 .