The Crocodile Coup is a play in the game contract bridge. It is executed by the defense: specifically by the second hand to play to a trick. It is the play of a higher card than might seem necessary, to keep a run of honors from being blocked by a singleton honor being in the other hand with either no entry back to the remaining tricks, or having to return the lead to declarer who can promptly dispose of his losers.
In the following example, [1] West executes the Crocodile Coup:
South in spades; needs 4 tricks | ♠ | — | |||
♥ | — | ||||
♦ | 10 7 | ||||
♣ | A 9 4 | ||||
♠ | — | N | ♠ | — | |
♥ | — | ♥ | 7 3 | ||
♦ | A Q | ♦ | K | ||
♣ | Q J 8 | ♣ | 6 3 | ||
South leads ♦4; West to play | ♠ | 9 | |||
♥ | — | ||||
♦ | 9 4 | ||||
♣ | K 10 |
With spades trump, South hopes to win four of the remaining five tricks. South leads the ♦4. Now:
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If the East-West hands were reversed, it would take no special acumen for East to overtake West's ♦K and cash the ♦Q.
Contract bridge, or simply bridge, is a trick-taking card game using a standard 52-card deck. In its basic format, it is played by four players in two competing partnerships, with partners sitting opposite each other around a table. Millions of people play bridge worldwide in clubs, tournaments, online and with friends at home, making it one of the world's most popular card games, particularly among seniors. The World Bridge Federation (WBF) is the governing body for international competitive bridge, with numerous other bodies governing it at the regional level.
In contract bridge and similar games, a finesse is a type of card play technique which will enable a player to win an additional trick or tricks should there be a favorable position of one or more cards in the hands of the opponents.
Safety play in contract bridge is a generic name for plays in which declarer maximizes the chances for fulfilling the contract by ignoring a chance for a higher score. Declarer uses safety plays to cope with potentially unfavorable layouts of the opponent's cards. In so doing, declarer attempts to ensure the contract even in worst-case scenarios, by giving up the possibility of overtricks.
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. Historically, ruff meant to "rob" i.e. exchange a card with the stock.
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.
The stepping-stone squeeze is an advanced type of squeeze in contract bridge. It is used when the declarer has enough high cards to take all but one of the remaining tricks, but does not have enough communication between the hands to cash them. It was analyzed and named by Terence Reese in the book "The Expert Game", also titled "Master Play in Contract Bridge".
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.
The Devil's Coup is a declarer play in contract bridge that prevents the defense from taking an apparently natural trump trick – often called "the disappearing trump trick".
Morton's fork is a coup in contract bridge that forces an opponent to choose between
Smother play in contract bridge is a type of endplay where an opponent's apparent trump trick goes away.
Scissors coup is a type of coup in bridge, so named because it cuts communications between defenders. By discarding a card or cards either from declarer's hand or from dummy or both, declarer can stop them from transferring the lead between each other, usually to prevent a defensive ruff.
The trump coup is a contract bridge coup used when the hand on lead has no trumps remaining, while the next hand in rotation has only trumps, including a high one that would have been onside for a direct finesse if a trump could have been led. The play involves forcing that hand to ruff, only to be overruffed. A similar motive is met in coup en passant, where indirect finesse is used instead of direct.
Coup en passant is a type of coup in contract bridge where trump trick(s) are "stolen" by trying to ruff a card after the player who has the master trump(s).
Trump promotion is a technique in contract bridge where the defenders create an otherwise non-existing trump trick for themselves. The most common type of trump promotion occurs when one defender plays a side suit through, in which both the declarer's hand and the other defender are void:
The Bath coup is a coup in the game of contract bridge in which the declarer, who holds AJx(x) in a suit, ducks the left-hand opponent's lead of a king in that suit. The coup is presumed to be named after the city of Bath in England and dates from the game of whist, the predecessor of bridge.
The Merrimac coup is a contract bridge coup where a player sacrifices a high card in order to eliminate a vital entry from an opponent's hand. It was named after American steam ship Merrimac, which was sunk during the Spanish–American War in 1898 in Santiago de Cuba in an attempt to bottle up the Spanish fleet.
The Alcatraz coup is an illegal method of learning about the opponents' cards in contract bridge. It is not a true coup. The word is being used facetiously based on the name of the former Alcatraz penitentiary. The "coup" consists of a deliberate revoke by declarer, causing the next player to reveal whether he holds the key card whose location is sought. The declarer then corrects the revoke and the defender may change his play, but declarer now knows about the key card and can choose how to finesse accordingly.
In bridge, the Deschapelles coup is the lead of an unsupported honor to create an entry in partner's hand; often confused with the Merrimac coup, the lead of an unsupported honor to kill an entry in an opponent's hand.
The Vienna coup is an unblocking technique in contract bridge made in preparation for a squeeze play. It is so named because it was originally published by James Clay (1804-1873) after observing it being executed in the days of whist by "the greatest player in Vienna" — identity unknown.