ECO code: A00
Anderssen's Opening e5 2.b3 d5 3.c3 begins with the moves 1. a3 e5 2. b3 d5 3. c3. This opening is an offbeat and somewhat unusual choice for White, aiming to prepare a solid pawn structure and control key squares in a flexible manner.
Characteristic: The moves 1.a3 and 2.b3 are somewhat waiting moves, designed to prevent Black from easily developing certain pieces (like a bishop to b4) and to prepare for a solid pawn center with c3. The opening is named after Adolf Anderssen, who occasionally experimented with such flank pawn moves.
Attacking or Defensive: As White, this opening tends to be more positional and somewhat defensive, focusing on solid development rather than immediate attacks. Black’s moves e5 and d5 stake a strong claim in the center, and White responds with c3 to support the d4 square and prepare central expansion.
Center Control: This opening does not immediately challenge the center aggressively. Instead, White builds a supportive structure (with c3) to contest the center later, while Black takes the initiative by occupying it early with pawns on e5 and d5.
This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.