An intermediate move (German Zwischenzug, “in-between move”) is a move played instead of the expected one, in the middle of an exchange or a series of forced moves. Usually it is a check, a capture or a strong threat that the opponent must answer. The “obligatory” recapture comes one move later.
How it works
Imagine an exchange: you capture an enemy piece and your opponent is supposed to recapture. But instead they first give check — and only then recapture, under better conditions. Or they do not recapture at all, because after the check they win more.
The intermediate move breaks the familiar logic of “I take — he takes”. That is exactly why it is so often overlooked in calculation.
Typical cases
- A check before recapturing. The enemy king moves to a worse square, and after that the recapture gains a tempo or material.
- A mate threat. Instead of recapturing you create a threat that must be met; the material can be won back later.
- Attacking a more valuable piece. Your opponent has taken your knight — you do not rush to recapture but attack their queen. The queen moves away, and only then do you take the piece.
- A counter-capture. Instead of recapturing you take another enemy piece that is also under attack.
How not to get caught
- When calculating an exchange, ask at every move: “Does my opponent have to recapture?” Is there a check or a stronger move?
- Look for intermediate moves of your own too: before recapturing automatically, check for checks and threats.
A good rule among chess players: “Don't take at once — think whether there is something stronger.”
Related devices: the double attack, the X-ray.