An in-between move interrupts an expected sequence with a stronger immediate threat. It requires calculation rather than automatic recapture.
What to do
After an exchange, pause to look for checks, threats against the queen and other forcing moves. Compare each with the ordinary recapture and calculate the response.
A mistake to avoid
Not every surprise move is good. If the opponent can ignore it and keep the material, the interruption may fail.
A detail worth checking
Ask why the opponent must answer the inserted move. If the threat is not forcing enough, the natural sequence may simply continue and leave the clever-looking interruption ineffective.
Try this practical check
Review a verified in-between-move puzzle, then write why the immediate recapture is less effective. Include the opponent’s best reply to the inserted move.
Related reading
6 Best Chess Books for Beginners and Improving Players (2026)
