Intruder

Intruder, usually referring to someone sneaking into someone else's territory without permission, may refer to:

Film and television

Literature

Intruder (Serbian band)

Intruder is an electronic/pop group from Belgrade, Serbia. The band has published five LP albums to date.

Discography

Albums

Singles & EPs

External links

Foreigner universe

The Foreigner universe is a fictional universe created by science fiction and fantasy author C. J. Cherryh. The series centers on the descendants of a ship lost in transit from Earth en route to found a new space station. It consists of six semi-encapsulated trilogy arcs (or sequences) that focus on the life of Bren Cameron, the human paidhi, a translator-diplomat to the court of the ruling Aiji of the atevi aishidi'tat. Currently sixteen of the eighteen novels have been published between 1994 and 2015. Cherryh has also self-published two ebook short story prequels to the series, "Deliberations" (October 2012) and "Invitations" (August 2013).

Cherryh calls the series "First Contact."

Works

Tactic

Tactic(s) may refer to:

Chess tactic

In chess, a tactic refers to a sequence of moves that limits the opponent's options and may result in tangible gain. Tactics are usually contrasted with strategy, in which advantages take longer to be realized, and the opponent is less constrained in responding.

The fundamental building blocks of tactics are move sequences in which the opponent is unable to respond to all threats, so the first player realizes an advantage. This includes forks, skewers, batteries, discovered attacks, undermining, overloading, deflection, pins, and interference. The Encyclopedia of Chess Middlegames gives the following tactics categories: Double Attack, Pawns Breakthrough, Blockade, Decoying, Discovered Attack, Passed Pawn, X-ray Attack, Interception, Deflection, Pin, Demolition of Pawns, Overloading, Annihilation of Defense, Pursuit (perpetual attack), Intermediate Move, and Space Clearance.

Often tactics of more than one type are conjoined in a combination.

Attacking and defending pieces

A piece is said to attack (or threaten) an opponent's piece if, in the next move, it could capture that piece. A piece is said to defend (or protect) a piece of the defender's color if, in case the defended piece were taken by the opponent, the defender could immediately recapture. Attacking a piece usually, but not always (see Sacrifice), forces the opponent to respond if the attacked piece is undefended, or if the attacking piece is of lower value than the one attacked.

Tactic (method)

A tactic (from the Ancient Greek τακτική taktike meaning "art of arrangement") is a conceptual action implemented as one or more specific tasks. The term is commonly used in business, protest and military contexts, as well as in chess, sports or other competitive activities.

Strategy versus tactic

Strategy is undertaken before the battle. Tactics are implemented during battle.

Military usage

In military usage, a military tactic is used by a military unit of no larger than a division to implement a specific mission and achieve a specific objective, or to advance toward a specific target.

The terms tactic and strategy are often confused: tactics are the actual means used to gain an objective, while strategy is the overall campaign plan, which may involve complex operational patterns, activity, and decision-making that lead to tactical execution. The United States Department of Defense Dictionary of Military Terms defines the tactical level as "the level of war at which battles and engagements are planned and executed to accomplish military objectives assigned to tactical units or task forces. Activities at this level focus on the ordered arrangement and maneuver of combat elements in relation to each other and to the enemy to achieve combat objectives."