The diagram is typical of that used to illustrate a deal of 52 cards in four hands in the game of contract bridge

Contract bridge

Contract bridge, usually known simply as bridge, is a trick-taking card game using a standard deck of 52 playing cards played by four players in two competing partnerships with partners sitting opposite each other around a small table...

. Each hand is designated by a point on the compass and so North-South are partners against East-West.

Suit features include:

• Each line represents a suit
  Suit (cards)
  In playing cards, a suit is one of several categories into which the cards of a deck are divided. Most often, each card bears one of several symbols showing to which suit it belongs; the suit may alternatively or in addition be indicated by the color printed on the card...
  
  , indicated by its symbol – for spades, for hearts, for diamonds, and for clubs
• Each card in a suit is indicated by its abbreviation: 'A', 'K', 'Q', 'J', '10', '9', '8', '7', '6', '5', '4', '3', '2'
• Cards of higher rank are to the left of those of lower rank
• Smaller cards whose exact value is unimportant may be represented by an "x"
• Thin spacing or hair spacing between cards is optional but generally improves readability
• When one hand is void (i.e. has no cards) in a suit, it is usually denoted by a long dash (an emdash)

The full deal diagram is usually drawn with North at the top, with the other hands following their normal compass orientation. For convenience and consistency, South is usually declarer, so that the reader can see the hand as if playing it; exceptions to this rule can occur when reporting deals from actual matches, but even then the players' seats are often rotated to follow this convention.

The diagram may include additional information such as deal or board

Board (bridge)

In duplicate bridge, a board is an item of equipment that holds one deal, or one deck of 52 cards distributed in four hands of 13 cards each. The design permits the entire deal of four hands to be passed, carried or stacked securely with the cards hidden from view...

number, scoring method (Matchpoints, IMPs, etc), the final contract, vulnerability and the opening lead.

Example

Diagram variants may leave out one or more hands if irrelevant to the presentation. Partially played hands may be displayed to illustrate end-position play.