Center Game: von der Lasa Gambit: what should White play?

In the Center Game: von der Lasa Gambit, White faces a critical tactical juncture where the black king has been displaced to the f7 square. The statistically and theoretically superior continuation is Qh5+, a move played in 98.1% of the 304,487 recorded games at this position. This check forces an immediate concession from Black and allows White to regain material while maintaining a significant engine evaluation of +1.11.

The tactical necessity of Qh5+

The move Qh5+ is the only continuation that preserves a clear advantage for White. By delivering check, White forces Black to address the threat to the king, which typically results in the sequence Qh5+ g6 Qxc5. This sequence allows White to capture the unprotected c5 and neutralize Black's active minor piece. Alternatives such as Nf3 or c3 are considered severe inaccuracies, as they fail to exploit the vulnerability of the black king and result in engine evaluations dropping below -3.35.

Black's defensive responses

Following the main line Qh5+ g6 Qxc5 Nf6 Nf3 Nc6, Black usually attempts to develop pieces rapidly to compensate for the lost bishop and the exposed king on f7. While Black has successfully navigated this line in over 299,000 recorded instances, White remains better developed after the queen retreat. The placement of the black king often hinders the coordination of the black rooks, providing White with long-term positional pressure despite the open nature of the center.

Risks of alternative continuations

Deviating from the check on h5 leads to a collapse of the White position. The move Nf3, though played in 2.8K games, allows Black to consolidate with Nf3 d5 O-O Nf6 b4 Bxb4, leaving White down significant material with no compensation. Similarly, attempts to bolster the center with c3 or developing the knight to the rim with Nh3 are statistically rare and theoretically unsound, as they ignore the immediate tactical requirement to punish Black's king placement.