15. If, after the first trick is played to, any two players are found to have more or less than their correct number of cards, the pack being perfect, the one having less shall draw from the hand of the one having more, and each shall pay a forfeit of five counters into the pool.
16. If a player omits to play to any trick, and plays to the following one, he shall not be allowed to correct the error; but shall be compelled to take in the last trick, with whatever hearts it may contain.
17. Should a player be found during or at the end of a hand to be a card short, all the others having the right number, and all having played to the first trick, he shall be compelled to take in the last trick.
18. If a player leads or plays two cards to a trick, he must indicate the one intended, and leave the other face up on the table. Any card exposed, except in the proper course of play, or any card named by the player holding it, must be left face up on the table.
19. A player must lead or play any exposed card when called upon to do so by any other player, provided he can do so without revoking. He cannot be prevented from playing an exposed card, and if he can so get rid of it, no penalty remains.
20. If a player leads out of turn, a suit may be called from him when it is next his proper turn to lead. This penalty can be enforced only by the player on his right. If he has none of the suit called, or if all have played to the false lead, no penalty can be enforced. If all have not played to the false lead, the cards can be taken back, and are not exposed cards.
21. If the third hand plays before the second, the fourth hand may demand that the card be taken back, and may call upon the third hand to play the highest card he has of the suit; or may call upon him not to discard hearts. If the fourth plays before the third, the second player may demand the penalty.
22. The first player to any trick having led, the others must follow suit if they can. Should a player revoke, and discover the error before the trick in which it occurs has been turned and quitted, he may amend his play, and the card played in error becomes an exposed card. Any who have played after him may withdraw their cards and substitute others, the cards first played not being exposed.
23. If the revoke is discovered during the play of the hand, the hand must be played out, and at the end the revoking player must pay all losses in that hand. Should the revoking player win the pool himself, he must pay to the pool thirteen counters and leave them for a Jack. Should he divide it, he must pay the other winner six counters, and leave up seven for a Jack.