Modern Defense Standard Line Intermezzo in Chess

In the Modern Defense Standard Line, a “modern defense standard line intermezzo” is an in-between move that interrupts your opponent’s expected sequence before you complete your main plan. Typically it appears after the opening has reached the standard setup (with Black’s flexible development and central tension), where White threatens a concrete continuation and Black answers with a tactical tempo-gaining intermezzo. The defining feature is that the intermezzo forces White to respond to a new threat or nuisance, changing the timing of the original line.