Over the 400 or so years that the game of cribbage has been around, variations and rules have evolved. House rules, preferences and even misunderstandings have been passed from one player to another. However, the core of the rules remains constant, and should be familiar to most players. The rules here apply to the standard two-, three- or four-player games, with details of variations being listed below.
Contents
The deal
Cribbage uses a standard 52-card deck of cards. The jokers are removed; the suits are equal in status. The players cut for first deal, with the player cutting the lowest card (the ace counts as one, and is the lowest card) dealing first. If the cutters tie, the cards are re-shuffled and re-cut. The dealer shuffles, offers the deck to the player on his or her right to cut (required in tournament play), and deals cards singly to each player, starting with the player on the dealer's left. During the deal, if any card is exposed by the dealer or found face-up in the deck, cards must be redealt.
Cards must be dealt so that each player ends up with four cards after the crib is formed, and the crib should also have four cards. For two players, each is dealt six cards (though some play with five cards dealt to each player and two to the crib). For three or four players, each is dealt five cards. In the case of three players, a single card is dealt face down in front of the dealer to start the crib.
The crib
Once the cards have been dealt, each player chooses four cards to retain, discarding the other one or two face-down to form the "crib" that will be used later by the dealer. At this point, each player's hand and the crib will contain exactly four cards.
The starter
The player on the dealer's left cuts the undealt portion of the deck (leaving at least 4 cards), and the dealer reveals the top card, called the "starter" or the "cut", placing it on top of the deck face up. (It is illegal to peek at any other cards in the deck during this process.) If this card is a Jack, the dealer scores two points for "his heels", also known as "his nibs", or simply "nibs". The game can end on a cut of a Jack for the dealer.
The play
The play (often called pegging) starts with the player on the dealer's left and continues clockwise. Each player lays one card in turn onto the table so that it is visible, stating the cumulative value of the cards played. (For example, the first player lays a 4 and says "four", the next lays a 7 and says "eleven", and so on). Face cards are worth ten; Aces are worth one. Play must not exceed 31, so a player who cannot lay a card without bringing the total above 31 passes by saying "Go". The other players continue to lay cards in turn without exceeding 31 until no cards can be played. The last player to lay a card scores two points if 31 is reached exactly ("31 for two"); otherwise one point is scored, e.g., "29 for one", or "30 for one", etc. The one-point score is known as "One for the go", or simply the "Go". The count is then reset to zero and play resumes, starting with the player to the left of the last card played. Players with cards remaining repeat this process until all players' cards have been played.
In addition to scoring one or two points for the last card, players score points according to the following rules:
If a card completes more than one scoring combination, then all combinations are scored. For example, if the first three cards played are 5s, the third one scores eight points: two for making 15, and six for a pair royal. Card combinations cannot span a reset; once the total reaches 31 (or a Go has been scored) and counting has restarted at zero, cards already played cannot contribute to runs or pairs.
Players choose when to lay each card in order to maximise their score according to the scheme shown below. The first player to reach 121 wins the game.
The show
Once the play is complete, each player in turn receives points based on the content of their hand. Starting with the player on the dealer's left, players spread out their cards on the playing surface and calculate their score based on these four cards and the starter card:
Common combinations are often scored as a group. For example, a run of three cards with an additional card matching one of the three in value, e.g., 2-2-3-4, is termed a "double run", and scores eight according to the above rules, three for each of the runs and two for the pair. Even more valuable are "triple runs" (three three-card straights including a three-of-a-kind, e.g., 2-2-2-3-4, that score fifteen) and "double-double runs" (four three-card straights including pairs, e.g., 2-3-3-4-4, that score sixteen). Combined runs may also include fifteen-twos. A 24 hand, the largest commonly seen, comprises a double-double run and four fifteen-twos. Two examples are 4-4-5-5-6 and 6-7-7-8-8.
The dealer scores his hand last and then turns the cards in the crib face up. These cards, in conjunction with the starter card, are scored by the dealer as an additional hand. The rules for scoring the crib are the same as scoring a hand, with the exception of the flush; a four-card flush in the crib is scored only if it is the same suit as the starter card (for a total of five points).
The highest possible score for a hand is 29 points: a starter card of a 5, and a hand of 5, 5, 5, J with the Jack being the same suit as the starter card. The score might be announced thus:
Fifteen two, fifteen four, fifteen six, fifteen eight, [four J-5 combinations]
fifteen ten, fifteen twelve, fifteen fourteen, fifteen sixteen, [four 5-5-5 combinations]
twelve for pairs [four 5s] is twenty-eight,
and nobs makes twenty-nine.
Scores between 0 and 29 are all possible, with the exception of 19, 25, 26 and 27. Players may colloquially refer to a blank hand (one scoring no points) as a "nineteen hand".
The end
After the dealer has scored his crib, all cards are collected and the deal passes to the player on the dealer's left. The next round starts with the deal.
Although the rules of cribbage do not require it (except in tournament play), the traditional method of keeping score is to use a cribbage board. This is a flat board, usually made of wood, with separate series of holes that record each player's score. It is usually arranged in five hole sections for easier scoring. Players each have two pegs that mark their current and previous scores, and all scoring is done by moving the back peg ahead of the front peg.
When a player reaches the target score for the game (usually 121), the game ends with that player the winner.
Match
A match (much like tennis) consists of more than one game, often an odd number (3 games, 5 games, 7 games etc.). The match points are scored on the cribbage board using the holes reserved for match points. On a spiral board, these are often at the bottom of the board in a line with 5 or 7 holes. On a traditional board, they are often placed in the middle of the board or at the top/bottom.
Two player game
In a two player game of cribbage a player scores one match point for each game won. Their opponent will begin the next game as first dealer. If a player skunks their opponent (reaches 121 points before their opponent scores 91 points) then that player scores one extra match point for that game (two match points in total). If a player double skunks their opponent (reaches 121 points before their opponent reaches 61), then they score two extra match points for the game (four match points in total). If a player triple skunks their opponent (reaches 121 points before their opponent reaches 31 points), they automatically win the match regardless of how many match points are needed to win. Double and triple skunks are not included in the official rules of cribbage play and are optional. There are several different formats for scoring match points.
Winner takes all
When playing a three player match in a winner takes all format, the winner scores two match points (just like in two-way cribbage) for each game won. If he/she skunks just the third opponent, they score an additional match point (3 total) with second place receiving one point. If he/she double skunks both opponents, he/she still scores three match points but second place would not receive any points at all.
Continued play
In continued play format, the winner of the match earns two match points for three player cribbage and four match points for five player cribbage (plus applicable match points if the player has skunked/double skunked their opponents). The remaining players play until there is a second winner, who scores one match point for three player cribbage and two match points for five player cribbage (with no extra points for skunking opponents). In five player cribbage, the remaining three players play until there is a third winner, who scores one match point (with no extra points for skunking opponents).