Editing Gin rummy (section)

== Play ==
On the first turn of the round, the non-dealer has first option of taking the upcard on the discard pile or passing. If the non-dealer takes the upcard, they must then discard a different card to the discard pile. The player acting second can take the top card from the pile of their choice. However, if the non-dealer passes the upcard, the dealer is given the opportunity to take the upcard or pass. If the dealer also passes, the non-dealer must draw from the stock pile, then the next turn and after, players can draw from the pile of their choice.

On each subsequent turn, a player must draw either the (face-up) top card of the discard pile, or the (face-down) top card from the stock pile, and discard one card from their hand onto the discard pile. If a player chooses to draw face-up card (from the discard pile) the discarded card cannot be the just drawn card.

Players alternate taking turns until one player ends the round by declaring the hand over (''knocking''), or until only two cards remain in the stock pile, in which case the round ends in a draw and no points are awarded. The game ends when a player reaches 100 or more points (or another established amount). In tournament rules the game is played in best of five with 250 points per game.<ref name="GRA rules">{{cite web|last1=Hainline|first1=John|last2=Hainline|first2=Lily Ann|title=Gin Rummy Rules for Tournament Play|url=http://ginrummytournaments.com/pdfs/GRA_Rules.pdf|website=ginrummytournaments.com|publisher=Gin Rummy Association|access-date=11 April 2018|location=[[Palm Desert, California|Palm Desert]]|date=2018}}</ref>

===Knocking===
In standard Gin, a player with 10 or fewer points of deadwood may ''knock'', immediately ending the hand without giving the opponent a chance to play. Knocking with no deadwood is known as ''going Gin'' or having a ''Gin hand'', while knocking with deadwood points is known as ''going down''.<ref>{{cite web|url=http://rummytalk.com/glossary-of-gin-rummy-terms/|title=Glossary of gin rummy terms|website=rummytalk.com}}</ref>

[[File:Gin Rummy (cropped).jpg|thumb|A Gin hand, with one set of four cards and two runs of three cards each.]]

When discarding to end a turn, a player who wishes to knock must clearly indicate their intent; this is generally shown by laying the discard face down, but can also be done through a verbal declaration or by tapping the playing surface. The player then lays out their hand, organized into melds and with any deadwood separated from them. The opponent, or "defending" player, shows their melds and is entitled to ''lay off'' any deadwood cards that fit into the knocking player's melds, provided that the knocking player does not go Gin.

The ''deadwood count'' is the sum of the point values of the deadwood cards. Aces are scored at one point, face cards at 10, and others according to their numerical values. Intersecting melds are not allowed; if a player has a three-card set ''and'' a three-card run sharing a common card, only one of the melds counts, and the other two cards count as deadwood. For example; within the five cards {{cards|7c|7s|7d|8d|9d}}, the seven of diamonds can be included in the set ({{cards|7c|7s|7d}}) or included in the run ({{cards|7d|8d|9d}}), but it cannot be included in both.

For example, suppose that the knocking player has a meld of three Kings. If the defending player is holding the fourth King as deadwood, they may lay it off by adding it to the meld and thus reduce their deadwood count by 10. 

The difference in the two players' deadwood counts determines the score for the hand as follows.

* If the knocking player has the lower count, they score points equal to the difference.
* The defending player can ''undercut'' the knocking player by having a lower or equal count. In this case, the defending player scores the difference plus a bonus (usually 15 points). An undercut may occur either before or after the defending player has laid off any deadwood.

The knocking player can never lay off their deadwood into the defending player's melds.

A player who goes Gin (i.e. has no deadwood) gets a bonus (typically 25 points).

===Big Gin===
A player holding a Gin hand may also choose to continue the round instead of revealing it, in hopes of attaining an 11-card ''Big Gin'' hand as follows.

If a player draws or takes a card that can be used to form melds with the 10 cards already held, the player declares Big Gin and the hand ends. That player scores a Big Gin bonus (typically 31 points) plus the defending player's deadwood count; that player may not lay off any cards.