Vienna Game: Anderssen Defense: what should White play?

In the Vienna Game: Anderssen Defense, White's most critical decision revolves around how to handle Black's active bishop on c5. With 390,608 games recorded at this position, engine analysis slightly favors Na4 (+0.16) to eliminate Black's dark-squared bishop and secure the bishop pair. Other primary continuations include Qh5 (+0.11), which immediately attacks Black's kingside, and natural developmental options like Nf3 (+0.03).

Eliminating the Bishop with Na4

The primary engine recommendation Na4 aims directly at Black's active c5. In the illustrative line Na4 Bb6 Nxb6 axb6 Ne2 Nf6, White gives up the knight to remove Black's bishop, accepting doubled b-pawns for Black in exchange for long-term central control and flexible knight development to e2. This setup denies Black easy counterplay along the a7-g1 diagonal while keeping White's pawn structure intact.

Aggressive Alternatives and Direct Pressure

For players seeking immediate complications, Qh5 generates early tactical pressure against Black's position. The engine evaluates this line at +0.11 after Qh5 Qd7 Qg5 f6 Qh5+ Kd8, which forces Black's king to forfeit castling rights in defense of the f7 and g7 pawns. While dynamic, this path creates less permanent structural advantages than the quieter alternatives.

Natural Development Continuations

White can also choose classical piece development rather than confronting the c5 immediately. Both Nf3 (+0.03) and Nge2 (+0.02) prepare an early central push toward d4, as shown in variations like Nf3 Nf6 d4 exd4 Nxd4 O-O and Nge2 Nf6 d4 exd4 Nxd4 O-O. Lastly, the modest prophylactic move h3 (-0.02) remains playable, leading to calmer maneuvering after h3 c6 Nge2 a5 Bb3 Nf6.