Rank of Cards
A (high), K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3, 2.
Each player receives five cards, dealt in a round of three at a time, then a round of two at a time, or first two and then three.
Each player in turn, beginning to the dealer's left, may make one bid or pass. A bid is the number of tricks, out of five, that the player thinks he can win with a particular suit as trump. A bid of all five tricks is called "Nap."
The highest bidder indicates the trump suit by making the opening lead, which must be a trump. Other players must follow suit if possible. A player who cannot follow suit may trump or discard at will. A trick is won by the highest card played of the suit led, or, if it contains a trump, by the highest trump. The winner of a trick leads next.
Players create a "pool" (pot) of chips, which is won by the first player to successfully take five tricks on a Nap bid. Each player puts in an equal number of chips to begin the pool; and thereafter, each dealer in turn adds the same number of chips each hand. The pool may be further increased by requiring a player revoking to contribute five chips, and for a lead out of turn, three chips. A player bidding Nap and failing to take five tricks must double the pool.
One card only is dealt to make a widow, usually on the first round. By adding one chip to the pool, any player may "peep" at this card before bidding or passing. The highest bidder may take the widow card but must discard one card to reduce his hand to five cards before play begins.
How to Keep Score
There is no credit for extra tricks won either by the bidder or by the opponents beyond what was needed to make or defeat the bid. If the bidder makes the bid, they collect from all the other players. If the bidder is defeated, they pay every player.
The usual way of settling scores is to distribute an equal number of chips to all players before the game and then settle in chips after each deal.