science

Preferans

Preferans is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Preferans rather than just read about it. In short: Preferans (Russian: преферанс, IPA: [prʲɪfʲɪˈrans]) or Russian Preference is a 10-card plain-trick game with bidding, played by three or four players with a 32-card Piquet deck. It is a sophisticated variant of the Austrian game Préférence, which in turn descends from Spanish Ombre and French Boston.

Key takeaways

Preferans belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Preferans to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Preferans from memory before moving on to harder problems.

Reference excerpt

Preferans (Russian: преферанс, IPA: [prʲɪfʲɪˈrans]) or Russian Preference is a 10-card plain-trick game with bidding, played by three or four players with a 32-card Piquet deck. It is a sophisticated variant of the Austrian game Préférence, which in turn descends from Spanish Ombre and French Boston. It is renowned in the card game world for its many complicated rules and insistence on strategical approaches. Popular in Russia since approximately the 1830s, Preferans quickly became the country's national card game. Although superseded in this role by Durak, it is still one of the most popular games in Russia. Similar games are played in various other European countries, from Lithuania to Greece, where an earlier form of Russian Preferans is known as Prefa (Greek: Πρέφα). Compared to Austrian Préférence, Russian Preferans and Greek Prefa are distinguished by the greater number of possible contracts, which allows for almost any combination of trumps and numbers of tricks. Another distinguishing feature is the relatively independent roles played by the opponents of the soloist.

Overview Preferans is played by three active players with a French-suited 32-card piquet deck. Aces rank high and tens rank in their natural position between jacks and nines. As happens with many three-player trick-taking games, the game is frequently played by four players using the convention that in each hand the dealer pauses. Each active player receives 10 cards in batches of 2. The remaining 2 cards form a talon that will be used by the declarer to improve their hand. The deal typically follows the scheme: 2–talon–2–2–2–2.... Also two players can play Preferans. This variation is called hussar (Russian: Гусарик, Gusarik). In this variation cards are dealt for three players. The third player is called dummy, his cards are not opened during bidding. If someone wins a bidding and the second player decides to whist, his and dummy's hands will be displayed face-up on the table and the defender will play in the light as in the game with three or four players. A bidding process is used to decide which player declares the trump suit, as well as the contract, which is the required number of tricks the soloist must attain. The soloist is known as the declarer, and the declarer's objective is to win the contracted number of tricks, while the defenders' main objective is to prevent this. Trick-play differs from Whist in that there is an obligation to trump. The eldest hand leads to the first trick. Players must follow suit if possible, else trump if possible. The trick is won by the player who played the highest trump or the highest card of the suit led. The winner of a trick leads to the next trick.

Bidding and contracts

Beginning with the eldest hand, players bid for the privilege of declaring the contract and trump suit and playing as the soloist. Each bid consists of a number from 6 to 10 that indicates the minimum number of tricks to be won by the declarer and a trump suit. The ranking is first by number of tricks and then by suit as follows: spades, clubs, diamonds, hearts, and no trumps (in ascending order). A special bid, misère, ranks between 8 tricks with no trumps and 9 tricks with spades. The bidding can last several rounds until all players but one pass. At the beginning of each round, the eldest hand can make a bid that only needs to be as high as the highest bid so far. Otherwise each bid must be higher than the previous one. A player who has passed may not bid again later, and a player who wants to bid misère must not make any other bids before or after. If no player bids at all, a special all-pass game is played (Russian: raspasovka). Misère and all-pass games are special in that the object is to avoid tricks rather than win them. Both are described in their own sections below. The highest bidder becomes the declarer. The declarer shows the two cards in the talon to the defenders before adding them to their hand and discarding any two cards face down. Unless the declarer's bid was misère, the declarer then declares any contract that ranks at least as high as the highest bid. In trick-play, the declarer must win at least the number of tricks indicated in the contract. If successful, the declarer wins the value of the contract in pool points (×10). If not successful (a situation called remise), the declarer loses the value of the contract multiplied by the number of undertricks (tricks missing) in dump points (×10), and also pays the same amount to each defender in whist points (×1).

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Preferans

Start with the simplest possible case. Write down what Preferans claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Preferans before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Preferans ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Preferans

In research: Preferans appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Preferans in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Preferans is common in secondary-school and first-year university syllabi. It links to neighbouring topics 19th-century card games, Preference group, Russian card games, so understanding it makes those chapters shorter.
In everyday life: Look for Preferans outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Preferans in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Preferans means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Preferans out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Preferans in simple terms?

Why does Preferans matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Preferans?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Preferans.