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Everything you need to know about Gin Rummy, from basic rules to advanced mechanics. If you're new to the game or looking to settle a house-rule debate, these answers will help.
Gin Rummy is a two-player game where you hold all your cards until you knock or go gin. In regular Rummy (also called Rummy 500), you can have more players and you lay melds on the table as you form them. Gin Rummy also has unique mechanics like knocking, undercuts, and the gin bonus that regular Rummy does not.
Deadwood refers to any cards in your hand that are not part of a meld (a set of 3-4 matching ranks or a run of 3+ consecutive cards in the same suit). The total point value of your deadwood determines when you can knock and how the hand is scored. Face cards count as 10 points, aces as 1, and numbered cards at face value.
When a player knocks, both players reveal their hands. The knocker scores the difference between the two players’ deadwood totals. If the knocker goes gin (zero deadwood), they score the opponent’s entire deadwood plus a 25-point gin bonus. If the opponent ties or beats the knocker’s deadwood (an undercut), the opponent scores the difference plus a 25-point undercut bonus. The game is typically played to 100 points.
Going gin means you end the hand with zero deadwood — every card in your hand is part of a meld. When you go gin, your opponent cannot lay off any cards on your melds, and you earn their total deadwood value plus a 25-point bonus. Going gin is the best possible outcome for a hand.
No. Each card can only be part of one meld. For example, if you have 7♣ zero-width space 7♦ 7♥ and 6♥ 7♥ 8♥, the 7♥ can only count toward one of those melds, not both. You must choose the arrangement that minimizes your deadwood.
An undercut occurs when the non-knocking player has deadwood equal to or less than the knocker’s deadwood. The non-knocking player wins the hand and scores the difference in deadwood (if any) plus a 25-point undercut bonus. Undercuts are a key strategic element that make knocking with high deadwood risky.
Big Gin is a special variant where a player holds 11 cards (instead of discarding) and all 11 form melds with zero deadwood. Some scoring systems award a larger bonus for Big Gin (often 31 points instead of 25). Not all house rules recognize Big Gin, so agree on this before playing.
Yes, but you can only take the top card of the discard pile — you cannot dig through it. On your turn, you choose to draw either the face-up top card of the discard pile or the face-down top card of the stock pile. Taking from the discard pile gives you a known card but also reveals information to your opponent.
You may knock when your deadwood totals 10 points or less. As a general strategy, knock early when you can, especially with low deadwood (5 or under). Holding out for gin is tempting but risks being undercut or allowing your opponent to improve their hand. The closer you are to zero deadwood, the safer it is to play on for gin.
Each player is dealt 10 cards. The remaining 32 cards form the stock pile. The top card of the stock is turned face up to start the discard pile. The non-dealer has the option to take this first upcard or pass; if they pass, the dealer may take it or pass, and normal play begins from the stock.
If only two cards remain in the stock pile and neither player has knocked, the hand ends in a draw with no points awarded. This prevents a situation where a player is forced to draw the last card with no meaningful choice. The hand is re-dealt and play continues toward the target score.
Got questions? The best way to learn is to play.
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