What Is Zwischenzug in Chess?
Zwischenzug (German for 'in-between move') is an unexpected intermediate move played instead of the expected reply, often changing the whole calculation.
Definition
Zwischenzug (also called an 'intermezzo') is an intermediate move played instead of the expected recapture or reply. It typically gives check or makes a strong threat that must be answered first, and then the original recapture or plan follows. Zwischenzugs frequently turn a losing sequence into a winning one because the opponent hasn't calculated the intermediate move.
Example
White takes a pawn on d5 and expects Black to recapture. But instead of recapturing, Black plays Qb6+ — a check that wins a pawn on f2 along the way. After White deals with the check, Black recaptures on d5. The Zwischenzug gained a free pawn.
Why It Matters for Your Chess
Missing an opponent's zwischenzug is one of the most common calculation errors. Always ask 'does my opponent have a check or strong threat before the expected recapture?' before committing to a sequence.
Frequently Asked Questions
How do you pronounce 'Zwischenzug'?
'TSVISH-en-tsoog' — it's German for 'between/intermediate move'. English players also call it an 'intermezzo' (Italian for the same concept).
How do you defend against a Zwischenzug?
Anticipate it by calculating all your opponent's checks and threats before assuming they'll play the expected response. Experienced players mentally follow each forcing variation to its end before committing.
Practice Zwischenzug in Your Games
FireChess detects tactical patterns like zwischenzug in your games and shows you exactly what you missed — and how to find them next time.
Related Terms
Fork
A fork is a tactic where one piece attacks two or more enemy pieces simultaneously, forcing your opponent to lose material.
Discovered Attack
A discovered attack is unleashed when one piece moves and unmasks an attack from a piece behind it — often winning material or giving check.
Tempo
A tempo is a single turn of play — gaining a tempo means forcing your opponent to waste a move, while losing a tempo means moving a piece twice when once would have sufficed.
Tactic
A tactic is a sequence of forced moves that immediately wins material or delivers checkmate — the short-term 'violence' of chess.