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Zugzwang (from German 'compulsion to move'; pronounced [ˈtsuːktsvaŋ]) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position.
The Immortal Zugzwang Game is a chess game between Friedrich Sämisch and Aron Nimzowitsch, played in Copenhagen in March 1923. It gained its name because the final position is sometimes considered a rare instance of zugzwang occurring in the middlegame . [ 1 ]
Triangulation is a tactic used in chess to put one's opponent in zugzwang (a position in which it is a disadvantage to move). Triangulation is also called losing a tempo or losing a move.
In chess, opposition (or direct opposition) is a situation in which two kings are two squares apart on the same rank or file. Since kings cannot move adjacent to each other, each king prevents the other's advance, creating a mutual blockade. In this situation, the player not having to move is said to have the opposition. [1]
The World Chess Solving Championship (WCSC) is an annual competition in the solving of chess problems (also known as chess puzzles) organized by the World Federation for Chess Composition (WFCC), previously by FIDE via the Permanent Commission of the FIDE for Chess Compositions (PCCC).
A piece in a chess problem that is legally placed and could only have been created through promotion. It does not include pieces promoted after the initial problem position. orthochess Synonym for orthodox chess. [5] orthodox chess Chess according to FIDE's The Official Laws of Chess; [6] see Rules of chess.
Chess puzzles can also be regular positions from actual games, usually meant as tactical training positions. They can range from a simple "Mate in one" combination to a complex attack on the enemy king. Solving tactical chess puzzles is a very common chess teaching technique. They are helpful in pattern recognition.
The key in the puzzle on the right is 1. Qd2. This move has no threat, but it leaves black in zugzwang: Black must either move one of his bishops or rooks, or move a pawn. However, any bishop or rook move must unguard one of the squares of d5, d6, d7 or d8, allowing White to mate on d5, d6 or d7 with the queen, and d8 with the knight.