🃏 Gin Rummy
Gin Rummy against the computer: draw and discard, runs and sets, deadwood, knock, gin, layoff, undercut and full scoring over a multi-round game to 100.
How to play
- On each turn you draw a card from the stock or the discard pile, then discard one card.
- Make sets of three or four cards of the same rank, and runs of at least three cards in the same suit.
- Cards that are not in a meld are called deadwood: an ace is worth 1, number cards their value and face cards 10.
- You can knock with 10 deadwood points or fewer. A hand with no deadwood is gin and earns a 25-point bonus.
- After a knock, your opponent can lay off cards on the knocker's melds. If they end up with less deadwood, they undercut and earn a 25-point bonus.
Tips from the champions
- Keep cards that connect in more than one way.
- Watch the cards the computer takes from the discard pile.
- Do not always wait for gin. Knocking early can stop your opponent from finishing a hand.
What does it train?
- Spotting runs and sets
- Managing risk
- Memory and deduction
Questions and answers
What is deadwood?
These are the cards that do not belong to any run or set. Their total value decides whether you can knock, and the round score.
What is the difference between a knock and gin?
You may knock with up to 10 deadwood points, and your opponent can lay off cards. Gin is a hand with no deadwood, earns a 25-point bonus and allows no layoff.
What is an undercut?
If after a knock and layoff your opponent has deadwood equal to or lower than the knocker, the opponent wins the difference plus 25.
How does the computer play?
It compares the value of its hand after taking the visible card, discards to keep deadwood as low as possible and, on the higher levels, knocks based on the state of the hand.
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