Gin Rummy Strategy: Knock Sooner and Win More Hands
How to win more at gin rummy: shed high cards early, keep flexible cards, read your opponent's discards, and know when to knock or wait for gin.
Sunroom Games · Updated
Gin Rummy looks simple: draw a card, throw a card, make melds. But every turn is a small decision about what to keep, what to give away and when to stop, and good players make those decisions a little better each time. Here are the habits that make the biggest difference.
If you'd like the rules first, see how to play Gin Rummy.
What actually wins hands
In test games between our computer players, the player who knocked won the hand about 94 times in 100. Undercuts happened, but rarely. A hand lasted only about seven turns each, and a hand that was won was worth about 15 points on average.
That points to the most important idea in the game: getting your deadwood down quickly matters more than building the perfect hand.
1. Get rid of high cards early
An unmatched King, Queen or Jack costs 10 points if the hand ends suddenly, while a stray Ace costs only 1. Early in the hand, when you don't yet know which cards will come together, throw the high cards that aren't working. A pair of Kings is worth keeping for a while; a lone King usually isn't.
2. Keep cards that can go two ways
Some cards can grow in more than one direction. A 7 of hearts next to a 6 of hearts and another 7 could become a run or a set, so it has twice the chance of being useful. Cards close together in the same suit, like the 5 and 6 of clubs, are also good to keep: either the 4 or the 7 of clubs makes a run.
3. Take from the discard pile only when it makes a meld
Taking the top discard tells your opponent exactly what you're collecting. Our players took from the discard pile on only about one draw in seven, and only when the card completed a meld and lowered their deadwood. If a card would just be nice to have, draw from the stock instead.
4. Watch what Anne picks up and throws away
Every card Anne takes from the discard pile is a clue. If Anne takes the 8 of clubs, be careful about throwing another 8, or the 7 or 9 of clubs. The cards Anne throws away are clues too: if Anne discards a 5, the other 5s are probably safe for you to throw.
5. Knock as soon as it makes sense
With the knocker winning more than nine hands in ten in our tests, waiting is usually a mistake. Once your deadwood is 10 or less, a knock often catches your opponent with a hand full of high cards. The lower your deadwood the better, but don't hold on for gin when a solid knock is already there.
The exception is very early in a hand, when your opponent hasn't had time to collect much either. Then a knock with 9 or 10 risks an undercut, and waiting a turn or two for a lower count can pay off. Our computer players knock early only with 6 or less, and with up to 10 once the stock is getting short.
6. Think about lay-offs before you knock
When you knock, your opponent can add cards to your melds. A run like 4, 5, 6 of hearts is open at both ends, so the 3 or 7 of hearts can be laid off on it. A set of three 9s can take the fourth 9. If you can choose between knocking now with open melds or a turn later with tighter ones, the lay-offs your opponent might make are worth counting.
7. Go for gin when it's nearly there
Gin is worth 25 points plus all of your opponent's deadwood, and nobody can lay off on it. If you're one card away from gin with plenty of cards left in the stock, it can be worth one more turn. In our test games, about one hand in eighteen ended in gin.
8. Keep an eye on the stock
If the stock runs down to its last two cards before anyone knocks, the hand is a draw and nobody scores. In a long hand where neither player is close, every turn you wait gives the other player another chance. Knock as soon as you can.
Reading the scoreboard
Near the end of the game, the scores should guide you. If you're close to 100 and well ahead, take any reasonable knock: a small win is enough. If you're far behind, you may need the bigger points of gin, so it can be worth holding out a little longer.
How often should you win?
Against Anne, a player making the same choices won about 47 games in 100 in our tests, and the player who went first won a slightly larger share of hands, about 52 in 100. If you're winning about half your games, you're playing as well as our computer. The hint button shows Anne's thinking on any turn, which is a good way to learn. If you enjoy two-player card games, try our Cribbage strategy guide too.