Squeeze play (bridge)

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A squeeze play (or squeeze) is a technique used in contract bridge and other trick-taking games in which the play of a card (the squeeze card ) forces an opponent to discard a winner or the guard of a potential winner. The situation typically occurs in the end game, with only a few cards remaining. Although numerous types of squeezes have been analyzed and catalogued in contract bridge, they were first discovered and described in whist.

Contents

Most squeezes operate on the principle that declarer's and dummy's hands can, between them, hold more cards with the potential to take extra tricks than a single defender's hand can protect or guard. Infrequently, due to the difficulty of coordinating their holdings, two defenders can cooperate to squeeze declarer or dummy on the same principle.

Context

Complexity

Squeeze plays are considered by many "to be the domain of the experts but many of the positions are straightforward once the basic principles are understood." [1] And according to Terence Reese, the squeeze play "in its practical aspects is not particularly difficult. It takes time, admittedly...and has...to be learned - it cannot be 'picked up'". [2]

Significance and prevalence

Squeeze plays are important in difficult-to-make high-level contracts and in matchpoint play where the taking of one more trick than generally achieved by the field is a real difference-maker likely to result in a top board. The opportunity to employ a squeeze play arises sufficiently frequently that it is essential to learn if one aspires to become an advanced player. [3] , [4]

Terminology

Conditions

The most basic forms of squeeze require all the following conditions to be in place before the squeeze can operate: [6]

Examples

Example 1AJ
K
KQ

N

W               E

S

AQJ10
South to lead4
2
A

South needs all three remaining tricks in a notrump contract. South leads the squeeze card, the A, and West is squeezed in hearts and spades. If West discards the A, North's K becomes a winner. If West discards either spade, North's J becomes a winner.

Note the following features of this position:

  1. One defender, West, holds the defense's only guards in declarer's two threat suits, spades and hearts.
  2. The count is rectified. Three cards remain, and declarer has two immediate winners (the A and A). Another winner will be established by the squeeze (either the K or the J).
  3. The K and the J are the threat cards. At least one threat card (in this case, both the K and the J) lies opposite the squeeze card (the A).
  4. At least one threat card (in this case, both the K and the J) is in the hand that plays after the squeezed defender.
  5. The A is an entry to either threat card.

This is an example of a positional squeeze, because both threat cards are in the same hand, North's. No threat card lies over East and therefore the squeeze can take effect only if West is to be squeezed.

Example 2AJ
K

N

W               E

S

KQ
QJ10A
South to lead4
2
A
If West's cards are transferred to East, as shown in Example 2, the squeeze fails because the fourth condition above is not satisfied. In that case, one of the menaces must be discarded before it is East's turn to play. If the K is discarded, East can safely discard the A. If the J is discarded, East can safely discard a spade.

Classification

There are several ways to classify squeezes:

Most of the common types of squeezes (and some of the rare ones) have names:

Type of SqueezePositional or
Automatic
OpponentsSuitsMaterial or
Non-material
Count
Rectified
Simple squeeze EitherSingle2YesYes
Criss-cross squeeze AutomaticSingle2YesYes
Trump squeeze EitherSingle2YesYes
Progressive squeeze
(a.k.a. Triple squeeze)
PositionalSingle3YesYes
Double squeeze
(also: Simultaneous double squeeze
Non-simultaneous double squeeze)
EitherDouble3YesYes
Compound squeeze PositionalDouble3YesYes
Entry-shifting squeeze PositionalSingle2YesYes
Single-suit squeeze PositionalSingle1YesNo
Strip squeeze PositionalSingle2-3YesNo
Backwash squeeze PositionalSingle2YesYes
Cannibal squeeze
(a.k.a. Suicide squeeze)
PositionalSingle2YesYes*
Stepping-stone squeeze PositionalEither2NoNo
Guard squeeze PositionalEither2-3YesYes
Vice squeeze PositionalSingle2-3YesNo
Winkle squeeze PositionalSingle3NoNo
Clash squeeze PositionalEither3YesYes
Saturated squeeze PositionalDouble4YesYes
Pseudo-squeeze N/AN/AN/ANoN/A
Entry squeeze EitherEither3NoNo
Knockout squeeze EitherSingle3NoNo

See also

Notes

  1. Moon (2010), Preface.
  2. Reese and Jourdain (1980), Preface.
  3. Reese and Jourdain (1980), Preface. Reese states that "squeeze possibilities - not always fulfilled, of course - arose on about one hand in every six or seven."
  4. Moon (2010), p. 23 states "about one deal in 12 contains the possibility of a squeeze."
  5. According to the Official Encyclopedia of Bridge , the concept of a squeeze card was developed by Sidney Lenz. Although squeeze card may be useful as a pedagogical device, the Encyclopedia suggests that the concept of a squeezed position is more useful at the table as a means of arriving at the position necessary for a squeeze to occur.
  6. Clyde Love, in Bridge Squeezes Complete , uses terminology that results in the acronym BLUE to summarize these conditions: a defender must be busy in two suits, the loser count must be right, at least one threat must be in the upper hand, and there must be an entry to the threat card.
  7. Clyde Love in Bridge Squeezes Complete proposes the term quintuple squeeze as it is a triple squeeze followed by a double squeeze

Further reading

Related Research Articles

In contract bridge, the criss-cross squeeze is a variant of the simple squeeze in which both menaces are blocked. However, the blocking cards provide the necessary communication between hands after the squeeze has been effected. Unblocking in the correct order allows the squeezing player to cash the newly created winner; but this requires an exact count of the hand – or a correct guess.

The double squeeze is a type of squeeze play in the card game of bridge.

In contract bridge, a simultaneous double squeeze is a double squeeze in which both opponents are squeezed by the same card, as opposed to non-simultaneous double squeeze where the two opponents are squeezed in different tricks.

The simple squeeze is the most basic form of a squeeze in contract bridge. When declarer plays a winner in one suit, an opponent is forced to discard a stopper in one of declarer's two threat suits.

In the card game of contract bridge, to hold up means to play low to a trick led by the opponents, losing it intentionally in order to sever their communication. The primary purpose is to give as many tricks to opponents as needed to exhaust all the cards in the suit from one of their hands. If that hand regains the lead, it will not be able to put the partner on lead to cash its tricks. Hold up is one of basic techniques in play.

In trick-taking games, to ruff means to play a trump card to a trick. According to the rules of most games, a player must have no cards left in the suit led in order to ruff. Since the other players are constrained to follow suit if they can, even a low trump can win a trick. In some games, like Pinochle and Preferans, the player who cannot follow suit is required to ruff. In others, like Bridge and Whist, he may instead discard. Normally, ruffing will win a trick. But it is also possible that a subsequent player will overruff. This is not always a bad thing—see uppercut below.

In contract bridge, coup is a generic name for various techniques in play, denoting a specific pattern in the lie and the play of cards; it is a special play maneuver by declarer.

A strip squeeze is a declarer technique at contract bridge combining elements of squeeze and endplay.

In contract bridge, the principle of restricted choice states that play of a particular card decreases the probability its player holds any equivalent card. For example, South leads a low spade, West plays a low one, North plays the queen, East wins with the king. The ace and king are equivalent cards; East's play of the king decreases the probability East holds the ace – and increases the probability West holds the ace. The principle helps other players infer the locations of unobserved equivalent cards such as that spade ace after observing the king. The increase or decrease in probability is an example of Bayesian updating as evidence accumulates and particular applications of restricted choice are similar to the Monty Hall problem.

Pseudo-squeeze is a type of deceptive play in contract bridge. The declarer goes through the motions of executing a genuine squeeze where none exists, in the hope that a defender misreads the actual position and misdefends. The pseudo-squeeze simply gives the defender able to recognize the possibility of a squeezed position a chance to go wrong.

These terms are used in contract bridge, using duplicate or rubber scoring. Some of them are also used in whist, bid whist, the obsolete game auction bridge, and other trick-taking games. This glossary supplements the Glossary of card game terms.

Backwash squeeze is a rare squeeze which involves squeezing an opponent which lies behind declarer's menace. A variation of this, known as the "Sydney Squeeze" or "Seres Squeeze", was discovered in play at a rubber bridge game in Sydney, Australia in 1965, by the Australian great Tim Seres; it was later attested by famous bridge theorist Géza Ottlik in an article in The Bridge World in 1974, as well as in his famous book Adventures in Card Play, co-authored with Hugh Kelsey.

The Vice is an advanced squeeze in contract bridge. Its distinguishing motive is presence of a "vice" menace in one suit, where one defender holds cards of equivalent rank which split the declarer's pair of cards in front of him, where his partner has a winner in the suit. It was first attested by Terence Reese in the book "The Expert Game", a.k.a. "Master Play in Contract Bridge". In other words, the defenders have a "high" finesse position, equivalent to the one in diagram:

In the game of bridge mathematical probabilities play a significant role. Different declarer play strategies lead to success depending on the distribution of opponent's cards. To decide which strategy has highest likelihood of success, the declarer needs to have at least an elementary knowledge of probabilities.

Hugh Walter Kelsey was a Scottish bridge player and writer, best known for advanced books on the play of the cards.

The opening lead is the first card played in the playing phase of a contract bridge deal. The defender sitting to the left (LHO) of the declarer is the one who makes the opening lead. Since it is the only card played while dummy's cards are still concealed, it can be critical for the outcome of the deal. Making the best opening lead is a combination of selecting the best suit and then the best card within that suit.

An entry squeeze is a move inn contract bridge

A knockout squeeze is a squeeze in three suits, one of which is the trump suit. The defender's trump holding is needed to prevent declarer from making a successful play involving trumps, including one as prosaic as ruffing a loser. Because the knockout squeeze does not threaten to promote declarer's trumps to winners it is termed a non-material squeeze. Other non-material squeezes include entry squeezes, single-suit squeezes and winkles.

In the card game bridge, the law or principle of vacant places is a simple method for estimating the probable location of any particular card in the four hands. It can be used both to aid in a decision at the table and to derive the entire suit division probability table.