Hungarian Opening: what should White play?

In this position from the Hungarian Opening, White has a decisive tactical advantage and should immediately play Qxd4. Black's knight ventured prematurely to d4 without adequate protection, leaving White free to simply capture the piece and claim an engine evaluation of +3.63. Overwhelmingly preferred, this move appears in 94.7% of the recorded games (34K recorded) with White scoring 70.6% from the position.

The Decisive Capture with Qxd4

Capturing on d4 with Qxd4 punishes Black's positional blunder directly by winning a full minor piece on move three. Because Black's d-pawn remains on d5, the queen cannot be harassed by immediate pawn pushes, leaving White with unchallenged material superiority and a dominant centralized d4. The engine highlights the illustrative continuation Qxd4 Nf6 Nf3 e6 Qa4+ Bd7, where White safely repositions the queen to a4 with tempo while maintaining the material advantage.

Passive Alternatives

Other moves fail to exploit Black's tactical oversight and forfeit White's advantage entirely. The developing move Nc3 is seen in 2.8% of games (1.0K recorded) and scores 55.8% for White, but the engine evaluation drops to +0.06 after the continuation Nc3 e5 Nxd5 Ne6 Nf3 c6. Similarly, attempting to kick the knight with c3 occurs in 2.5% of games (891 recorded) with an evaluation of -0.04 and a 51.9% score, leading to equality in the line c3 Nf5 Qxd5 Qxd5 Bxd5 e5. In all non-capturing lines, Black is permitted to escape the blunder unharmed.