ECO code: A00
Anderssen's Opening e5 Variation
Moves: 1. a3 e5 2. b3 d5 3. c3 Nf6 4. d3 Nc6 5. e3 Bd6
This opening is an unconventional and somewhat slow way for White to begin the game, starting with 1.a3 followed by 2.b3 and 3.c3. The characteristic feature of Anderssen's Opening is that White opts for flank pawn moves rather than immediate central control, preparing a solid but somewhat passive setup.
In this particular variation, Black responds actively by occupying the center with ...e5 and ...d5, developing knights to natural squares, and putting pressure on White’s restrained position.
From White's perspective, the approach is primarily defensive and positional, focusing on a solid pawn structure and flexible piece development rather than direct confrontation in the center. Black, on the other hand, takes an attacking stance by seizing central space and developing actively.
Regarding central control, White does not directly challenge the center early on. Instead, White aims for a slow buildup and waits to react to Black’s central presence. Black clearly dominates the center in this line.
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.