Zukertort Opening: Tennison Gambit: what to play after Bg4?

In the Zukertort Opening: Tennison Gambit, White's highest-evaluated option is Be2, yielding an engine evaluation of +0.19. This developing move immediately breaks the pin on the f3 knight and prepares kingside castling. While the database shows d4 is selected far more frequently, Be2 offers White the cleanest path toward harmonious piece coordination.

Assessing the development with Be2

Chosen in 14.7% of games (762K recorded), Be2 neutralizes the influence of Black's bishop on g4 without creating immediate pawn weaknesses. In this line, White scores 45.7% of points. An illustrative continuation from the engine runs Be2 e6 O-O c5 c4 d4, demonstrating how play transitions into central tension while White comfortably secures the king via kingside castling.

The popular d4 alternative

By far the most common choice in the database is d4, seen in 73.5% of games (3.81M recorded). This move claims central space and supports the advanced pawn on e5, carrying an engine evaluation of +0.05 and a 46.2% score for White. A sample continuation is d4 e6 c3 c5 dxc5 Bxf3, where Black trades on f3 and contests White's central footprint.

Other notable continuations

Players also explore options that directly question Black's bishop or bolster the center earlier. The solid c3 occurs in 2.4% of games (123K recorded), scoring 51.6% with an evaluation of +0.04 via the illustrative line c3 e6 d4 c5 dxc5 Bxf3. Alternatively, White can directly put the question to the bishop with h3, which appears in 9.5% of games (490K recorded) with an evaluation of -0.11 and a 44.8% score, often continuing h3 Bxf3 Qxf3 e6 d4 c5.