The Symmetrical Variation of the Nimzowitsch-Larsen Attack arises after 1.b3 b6. ECO code: A01.

Overview

With 1...b6, Black mirrors White's queenside fianchetto plan exactly. Both sides will develop their bishops to b2 and b7 respectively, creating a symmetrical structure where the long a1–h8 diagonal is contested by both players.

Strategic Themes & Plans

The symmetry is eventually broken by one side's choice of central pawn structure. White, having the extra tempo, can dictate the character of the game. Common continuations include 2.Bb2 Bb7 3.e3, preparing d4 and a classical centre, or 3.c4, entering English Opening territory. The position is strategically complex but generally offers White a slight edge due to the initiative.