Tactics — Chess Terms

Tactics are short-range sequences of moves that win material or deliver checkmate. Forks, pins, skewers, discovered attacks, and combinations live here — the vocabulary of the board's decisive moments.

Beginner

Attack Beginner: An attack is a move or coordinated plan that threatens an opponent’s piece, pawn, key square, or king, forcing them to respond.
Back Rank Beginner: The back rank is the first rank for White or eighth for Black, where each king starts and often remains after castling, leaving it vulnerable to mate when its own pieces block all escape squares.
Back-Rank Mate Beginner: A back-rank mate is a checkmate in which a king trapped on its back rank by its own unmoved pawns or pieces is attacked along that rank by an enemy rook or queen.
Bonehead Move Beginner: A bonehead move is an obvious blunder such as hanging a piece or allowing an elementary tactic that a player of the same strength should spot instantly.
Botez Gambit Beginner: The Botez Gambit is a humorous term for the blunder of hanging one's queen, popularized by the Botez sisters on their online streams.
Cheap Trick Beginner: A cheap trick is an unsound tactical trap or swindle that succeeds only when the opponent overlooks an obvious threat, typically from a lost or inferior position.
Check Beginner: Check occurs when a player's king is under direct attack by an opponent's piece and must be resolved on the next move.
Checkmate Beginner: Checkmate ends the game when a king is in check and has no legal way to escape by moving, capturing the attacker, or blocking the attack.
Corridor Mate Beginner: A corridor mate is a checkmate in which a rook or queen attacks the king along an open file or rank while the king’s own pieces or the board edge block escape on the adjacent lines, forming a narrow corridor.
Discovered Attack Beginner: A discovered attack occurs when one piece moves off a line and uncovers an attack from a second piece standing behind it on the same rank, file or diagonal.
En Prise Beginner: A piece or pawn attacked by an opponent and insufficiently defended, allowing the opponent to capture it safely.
Fool's Mate Beginner: Fool's Mate is the shortest possible checkmate in chess, delivered by Black in just two moves after 1.f3 e5 2.g4 Qh4#.
Fork Beginner: A fork is a tactic in which one piece attacks two or more enemy pieces at once, usually winning material because only one threat can be met on the next move.
Gambit Beginner: A gambit is an opening in which a player deliberately sacrifices material, usually a pawn, in return for rapid development, central control, or attacking initiative.
Interposing Beginner: Interposing means placing one of your own pieces on the line between an enemy piece and your king to block a check.
Knight Jumper Beginner: A knight jumper is another name for the chess knight, the only piece that moves in an L-shape and jumps over any pieces in its path.
Loose Pieces Drop Off Beginner: "Loose pieces drop off" is a tactical reminder that any undefended piece is vulnerable to capture or forks because the opponent can attack it without fear of immediate recapture.
Patzer Beginner: A patzer is a mildly pejorative term for a weak or inexperienced chess player who repeatedly makes elementary mistakes and shows little grasp of basic strategy or tactics.
Pin Beginner: A pin occurs when a long-range piece attacks an enemy unit that shields a more valuable piece or the king on the same line, leaving the attacked unit immobilised.
Rank Beginner: A rank is one of the eight horizontal rows of squares running across the chessboard, numbered 1 to 8 from White’s side.
Skewer Beginner: A skewer is a tactic in which an attacker forces a more valuable enemy piece to move along a shared rank, file, or diagonal, thereby exposing a less valuable piece behind it to capture.

Intermediate

Advantage Intermediate: An advantage is any lasting edge in material, position, or initiative that improves one player's chances of winning.
Alekhine's Gun Intermediate: Alekhine's Gun is a tripled major-piece battery on an open or half-open file with the queen behind two rooks to maximize pressure against a fixed weakness.
Anastasia's Mate Intermediate: Anastasia's mate is a checkmate pattern in which a knight and rook combine to trap the enemy king, typically with the knight checking while the rook seals an adjacent file or rank and a friendly or enemy unit blocks one escape square.
Anderssen's Mate Intermediate: Anderssen's Mate is a checkmate pattern in which a rook or queen checks the enemy king along an edge file or rank, supported by a friendly bishop or pawn that covers the sole flight square while the king's own pieces often block its other escapes.
Antichess Intermediate: Antichess is a chess variant in which captures are mandatory and the player who captures the opponent's final piece or leaves the opponent with a lone king that has no legal moves wins.
Arabian Mate Intermediate: The Arabian mate is a checkmate pattern in which a knight and rook combine to trap the enemy king in a corner, with the knight delivering check from a safe square while the rook protects it and seals the adjacent rank or file.
Atomic Chess Intermediate: Atomic Chess is a chess variant in which every capture causes an explosion removing the captured piece, all adjacent non-pawn pieces, and the capturing piece itself unless it is a pawn, fundamentally changing piece values and king safety.
Battery Intermediate: A battery consists of two or more same-colour pieces aligned on a file, rank or diagonal, with the stronger piece behind, so the front unit can move to unleash the rear piece’s concentrated pressure.
Battery Play Intermediate: A battery consists of two or more same-color pieces aligned on a rank, file, or diagonal so the rear piece supports or attacks through the forward piece once it moves or captures.
Bean Counter Intermediate: A bean counter is a player who overvalues raw material counts and point values at the expense of positional, dynamic, and initiative factors.
Blackburne's Mate Intermediate: Blackburne's Mate is a checkmate pattern in which a bishop protected by a knight delivers mate along a diagonal to a king whose flight squares are blocked by its own pieces or the board edge.
Blind Pigs Intermediate: Blind pigs is the informal name for two rooks doubled on the seventh rank, where they typically create decisive threats against the enemy king and pawns.
Blindfold Chess Intermediate: Blindfold chess is a format in which players conduct a full game without seeing the board, announcing moves verbally in algebraic notation while retaining the entire position in memory.
Blitz Intermediate: Blitz is chess played with a fast time limit, usually five minutes or less for the whole game.
Boden's Mate Intermediate: Boden's mate is a checkmate pattern in which two bishops on adjacent diagonals attack a king whose own pieces or pawns block its escape squares, most often after queenside castling.
Brilliancy Intermediate: A brilliancy is a striking, often sacrificial move or sequence whose originality, depth, and elegance transform the position in an unexpected yet forcing way to produce a decisive advantage.
Brilliancy Prize Intermediate: A brilliancy prize is an award given in some chess tournaments for the most spectacular, creative, or original game or combination played.
Bullet Checkmate Intermediate: A bullet checkmate is a swift tactical mating sequence in bullet chess that exploits the one-minute time control through instant pattern recognition rather than deep calculation.
Bullet Merchant Intermediate: A bullet merchant is an online player who grinds hundreds or thousands of bullet games in rapid succession, usually to farm rating points through volume or to sharpen reflexes and pattern recognition under extreme time pressure.
Calculation Intermediate: Calculation is the mental process of analyzing sequences of moves and replies several turns ahead to evaluate which options are sound.
Can Opener Intermediate: The can-opener is a kingside attack in which a player advances the h-pawn, usually to h5 or h6, to force open the h-file against an opponent's castled king.
Capture Intermediate: Capture is the act of moving your piece onto a square occupied by an opponent's piece and removing that piece from the board.
Caveman Attack Intermediate: A caveman attack is an unsophisticated, direct assault on the king that ignores positional principles in favor of crude threats and rapid piece activity.
Center Camper Intermediate: A center camper is a piece, most often a knight, that occupies or firmly controls one of the four central squares to dominate key lines and restrict the opponent.
Cheapo Intermediate: A cheapo is a simple tactical trick or swindle played to catch an inattentive or time-pressed opponent.
Chess Blindness Intermediate: Chess blindness is a player's temporary inability to see an obvious move, capture, or threat on the board, typically caused by fatigue, time pressure, or fixation on a single idea.
Chess Composer Intermediate: A chess composer creates original chess problems such as mate-in-n puzzles, studies, or retrograde problems, designed for others to solve rather than for competitive play.
Chess Masochist Intermediate: A chess masochist is a player who enjoys or deliberately seeks cramped, objectively worse positions that demand prolonged defense under heavy pressure.
Chess Nerd Intermediate: A chess nerd is a dedicated player who invests heavily in studying openings, theory, puzzles, and engine analysis, often prioritizing deep preparation over casual or over-the-board play.
Chess Problem Intermediate: A chess problem is a composed position in which the solver must find a precise sequence of moves to achieve a stipulated goal, most often checkmate in a set number of moves.
Chess Zoomer Intermediate: A chess zoomer is a young online player, typically Gen Z, known for rapid time-control games and sharp tactical intuition honed on digital platforms.
Clearance Intermediate: Clearance is a tactical motif in which a piece moves aside to vacate a square or open a line for a more powerful piece—usually a rook or queen—often gaining tempo by delivering check or creating a threat.
Clock Enjoyer Intermediate: A clock enjoyer is a chess player who derives genuine enjoyment from managing the chess clock, navigating time pressure, and making practical decisions under strict time controls.
Coffeehouse Chess Intermediate: Coffeehouse chess is an informal attacking style that deliberately seeks complications, speculative sacrifices and practical tricks rather than the steady accumulation of small advantages.
Coffin Nail Intermediate: A coffin nail is a move, often a pawn advance, that locks the enemy king into a mating net from which there is no escape.
Compensation Intermediate: Compensation is a positional or dynamic advantage such as initiative, better pawn structure, or attacking chances that offsets a material deficit.
Coquio's Mate Intermediate: Coquio's Mate is a checkmate pattern in which a queen protected by a knight mates a king trapped on the edge of the board by its own pieces or pawns.
Countergambit Intermediate: A countergambit is an immediate pawn or piece sacrifice by the defender, almost always Black, offered in direct reply to the opponent’s opening gambit.
Country Move Intermediate: A country move is a natural-looking but usually suboptimal chess move that an inexperienced player might choose without deeper calculation.
Cp Intermediate: Cp is chess shorthand for counterplay, referring to active moves or plans that create threats, pressure, or complications to offset an opponent's initiative or material advantage.
Crazyhouse Intermediate: Crazyhouse is a chess variant in which captured pieces can immediately be dropped back onto the board as the capturer's own pieces, following standard movement rules.
Cross Pin Intermediate: A cross pin is a tactic in which one piece pins two enemy units along intersecting lines, so that either may be captured if it moves.
Decoy Intermediate: A decoy is a tactic that lures an opponent’s piece onto a particular square, often exposing it to capture or diverting it from defending a more important target.
Decoy Sacrifice Intermediate: A decoy sacrifice offers material to lure an enemy piece onto a specific square where it becomes vulnerable to attack or loses its defensive role.
Defensive Wizard Intermediate: A defensive wizard is a player exceptionally skilled at defending difficult positions, parrying attacks, and steering games toward draws or counterplay.
Deflection Intermediate: Deflection is a tactic that forces an opposing piece to abandon a key square or defensive duty, exposing a weakness the attacker can immediately exploit.
Desperado Intermediate: A desperado is a doomed piece that captures the highest-value enemy unit reachable before it is taken.
Discovered Check Intermediate: A discovered check occurs when one piece moves aside, revealing an attack on the enemy king from a second piece positioned behind it on the same line.
Discovery Intermediate: A discovery is a tactic in which one piece moves off a line, uncovering an attack from a second piece stationed behind it.
Double Check Intermediate: A double check occurs when two pieces simultaneously check the enemy king, most often via a discovered check in which the moving piece also attacks the king.
Dovetail Mate Intermediate: A dovetail mate is a queen mate against a king whose own pieces block its flight squares in a dovetail-like pattern, typically on the edge of the board.
Dragon Variation Intermediate: The Dragon Variation is a sharp Sicilian Defense line where Black fianchettos the king's bishop via an early ...g6, typically after 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6.
Duck Chess Intermediate: Duck Chess is a variant in which players alternate moving a shared, uncapturable duck to any empty square, where it blocks lines of attack and cannot be ignored.
Epaulette Mate Intermediate: An epaulette mate is a checkmate in which two rooks or queens attack the enemy king from adjacent squares on the same rank, blocking its lateral escapes like shoulder ornaments.
Eval Hostage Intermediate: An eval hostage is a position where an engine's evaluation is dominated by one forcing line or material factor, obscuring the true strategic assessment until that factor is resolved.
Evergreen Game Intermediate: The Evergreen Game is the 1852 encounter between Adolf Anderssen and Jean Dufresne, famed for its spectacular queen sacrifice and attacking brilliance.
Fairy Chess Intermediate: Fairy chess refers to variants that use non-standard pieces, boards, or rules, created mainly for composing problems and puzzles rather than tournament play.
Family Fork Intermediate: A family fork is a knight tactic that simultaneously attacks the enemy king, queen, and one or more rooks.
Frozen Rook Intermediate: A frozen rook is a rook immobilized by pins, discovered attacks, or defensive duties that prevent it from moving without allowing decisive material loss or check.
Greek Gift Sacrifice Intermediate: The Greek Gift is a classic bishop sacrifice on h7 (or h2) against a castled king, usually prepared by a knight on g5 and followed by Qh5 to launch a decisive kingside attack.
Grob Goblin Intermediate: The Grob Goblin is a playful name for the Grob Opening, 1.g4, an unorthodox first move that advances the g-pawn to disrupt normal development and provoke sharp, unbalanced positions.
Half-Pin Intermediate: A half-pin occurs when two same-color pieces stand on a line between an enemy piece and a target such as the king, so that moving either one exposes the other to capture or check.
Hope Chess Intermediate: Hope chess is the error of making a move that only works if the opponent overlooks a threat or blunder, rather than selecting the move that is best against any reply.
Initiative Intermediate: The initiative in chess is the ability to create threats that force the opponent to respond, thereby dictating the pace and direction of play.
Interference Intermediate: Interference is a tactical motif in which a piece is placed on a line to obstruct an opponent’s defender from protecting a key square or unit, typically breaking a pin or discovered attack.
King Hunt Intermediate: A king hunt is a sustained tactical attack that forces the enemy king from safety into the open board, often ending in checkmate.
Luft Intermediate: Luft is the creation of an escape square for a castled king, usually by advancing one of the pawns sheltering it, to prevent back-rank mate threats.
Middlegame Intermediate: The middlegame follows the opening once both sides complete development and the central pawn structure takes shape, shifting focus to concrete plans, piece activity, and tactics until trades simplify the position into an endgame.
Minor Pieces Intermediate: Definition awaiting review.
Morphy's Mate Intermediate: A checkmate pattern in which a rook or queen attacks the castled king along an edge file while protected by a bishop that also controls key flight squares.
Patzer Gives A Check Intermediate: A patzer gives a check when a player delivers an unproductive check that hands the opponent a free tempo or improved position.
Pawn Break Intermediate: A pawn break is a pawn advance that attacks an opposing pawn, usually to open lines for pieces or alter the pawn structure.
Pawn Storm Intermediate: A pawn storm is an aggressive advance of connected pawns on one flank, usually to open lines against the enemy king or seize space and initiative.
Perp Intermediate: Perp is shorthand for perpetual check, a repeating series of checks that forces a draw by repetition.
Perpetual Check Intermediate: A perpetual check is a drawing tactic in which one player forces an unending cycle of checks that the opponent cannot escape without allowing repetition.
Pigs On The 7Th Intermediate: Two rooks doubled on the opponent’s seventh rank, known as pigs on the seventh, create a powerful attacking formation that typically sweeps up pawns and generates decisive threats against the enemy king.
Poisoned Pawn Intermediate: A poisoned pawn appears free to capture yet hands the opponent lasting initiative, dangerous tactical threats, or a serious positional concession that outweighs its value.
Post-Mortem Intermediate: A post-mortem is the analysis and discussion of a completed chess game, usually by the players, to identify mistakes, better moves, and lessons learned.
Queen Intermediate: The queen is chess's most powerful piece, able to move any number of squares vertically, horizontally, or diagonally.
Raking Bishops Intermediate: Raking bishops are a pair of bishops posted on adjacent open diagonals, where they sweep across the board and create powerful attacking or controlling pressure.
Romantic Intermediate: Romantic chess refers to the aggressive 19th-century style favoring rapid development, open lines, and spectacular sacrifices over slow positional maneuvering.
Royal Fork Intermediate: A royal fork is a knight fork that attacks both the enemy king and queen at once, forcing the king to move and usually winning the queen for a knight.
Sacrifice Intermediate: A sacrifice is the intentional surrender of material, such as a pawn or piece, to obtain a compensating advantage like a stronger attack or lasting positional gain.
Seventh Rank Intermediate: The seventh rank (rank 7 for White, rank 2 for Black) is where the opponent’s pawns begin the game, and a rook or queen posted there usually attacks those pawns from behind while restricting the enemy king.
Stalemate Trick Intermediate: A stalemate trick is a tactical sequence in which a player forces the opponent into a position with no legal moves while the king is not in check, converting a likely loss into a draw.
Swashbuckling Intermediate: Swashbuckling denotes a bold attacking style that willingly accepts material deficits or structural damage to gain rapid development, open lines, and lasting pressure against the opponent.
Swindle Intermediate: A swindle is a tactical resource that lets a player in a lost position force a draw or win by exploiting the opponent’s relaxation and resulting oversight.
Swindling Chances Intermediate: Swindling chances are the tactical or psychological resources that let a player in a lost position provoke mistakes and salvage a draw or win.
Tactic Goblin Intermediate: A tactic goblin is an intermediate player who habitually searches for forcing sequences such as forks, pins, and discoveries to gain material or initiative, often prioritizing calculation over positional planning.
Tactics Intermediate: Tactics are short sequences of forcing moves that win material, deliver checkmate, or gain a decisive advantage by exploiting immediate threats like forks, pins, or discovered attacks.
Tempo Intermediate: Tempo is the advantage of making a useful move while forcing the opponent to respond without progress, often gained by a check, threat, or capture that compels a reply.
Threat Intermediate: A threat is a move or plan that would win material, deliver check, or gain another advantage if the opponent does not prevent it on their next turn.
Underpromotion Intermediate: Underpromotion occurs when a pawn reaching the eighth rank is promoted to a rook, bishop, or knight rather than the default queen, usually to avoid stalemate or secure a specific tactical gain.
Valve Intermediate: A valve is a chess-problem device in which one piece moves along a line, opening that line for an attack or mate while simultaneously closing a different line.
X-Ray Intermediate: An X-ray is a tactical motif where a piece attacks through an enemy unit to control or threaten a square or piece behind it, akin to a skewer.
X-Ray Attack Intermediate: An X-ray attack occurs when a piece attacks through an opposing piece to threaten a more valuable target behind it on the same rank, file or diagonal.
Zwischenzug Intermediate: A zwischenzug (German for "in-between move") is an unexpected forcing move such as a check or new threat inserted before the anticipated reply, compelling the opponent to respond first and often improving the outcome of the ensuing exchange.

Advanced

Allumwandlung Advanced: Allumwandlung is a chess problem theme in which, across different lines or solutions, a pawn promotes to each of the four possible pieces: queen, rook, bishop and knight.
Babson Task Advanced: A Babson Task is a chess problem in which White must reply to each of Black’s four possible pawn promotions by promoting to the same piece to deliver mate.
Excelsior Advanced: Excelsior is a chess problem theme in which a single pawn advances from its starting square through successive moves to promotion, typically enabling a surprising mate.
Windmill Advanced: A windmill is a repeating tactical sequence in which a piece (typically a rook or queen) alternates discovered checks with its supporter to capture multiple enemy units on successive moves.