1. Do not—as a rule—lead an ace, unless you have a king.
  1. Do not lead a thirteenth card, unless trumps be out.
  1. Do not trump a thirteenth card, unless you be last player, or want the lead.
  1. Keep a small card to return your partner's lead.
  1. Be cautious in trumping a card when strong in trumps, particularly if you have a strong suit.
  1. Having only a few small trumps, make them when you can.
  1. If your partner refuse to trump a suit, of which he knows you have not the best, lead your best trump.
  1. When you hold all the remaining trumps, play one, and then try to put the lead in your partner's hand.
  1. Remember how many of each suit are out, and what is the best card left in each hand.
  1. Never force your partner if you are weak in trumps, unless you have a renounce, or want the odd trick.