Ponziani Opening Jaenisch Counterattack Deflection in Chess

In the Ponziani Opening (Jaenisch Counterattack), “deflection” is a tactical motif where one side forces a key defender to move away from its duty. The defining feature is the Jaenisch-style counterplay after 1.e4 e5 2.Nf3 Nc6 3.c3 f5, where tactics often hinge on how Black’s pieces defend the central/dark-square targets. The deflection typically creates a momentary weakness—so a follow-up capture or threat lands with tempo.