Kádas Opening: what should White play?

In this position from the Kádas Opening (ECO A00), Black has fianchettoed the light-squared bishop to pressure e4, leaving White to choose how to safeguard the center. The principal recommendation is Nc3, developing a minor piece to defend e4 while maintaining an engine evaluation of +0.62. This position has arisen in 12,769 games recorded in master and online databases.

Defending the Center with Nc3

The move Nc3 directly addresses Black's attack against the central pawn on e4 without committing the queen prematurely. Developing the knight to c3 allows White to maintain natural piece flow despite the unorthodox inclusion of the flank push on h4. An illustrative continuation provided by engine analysis runs Nc3 e5 f4 exf4 d4 Bb4, where White seizes central space and opens lines toward the kingside.

Solid and Aggressive Alternatives

White also possesses quiet options that preserve central integrity. The solid d3 defends e4 while keeping an evaluation of +0.29, with the engine highlighting the sequence d3 d5 exd5 Qxd5 Nc3 Qd7. Alternatively, the space-gaining thrust e5 achieves a +0.20 assessment, leading to lines such as e5 e6 d4 Nc6 Nf3 d6. Both setups present viable, principled methods for meeting Black's setup without allowing immediate central liquidations.

Early Queen Sorties

White may also choose to protect e4 by deploying the queen, although these setups yield slightly negative assessments according to the engine. The move Qe2 rates at -0.13 and proceeds into Qe2 Nc6 Nf3 e5 g3 Nf6, though it obstructs the light-squared bishop's natural development. Similarly, Qf3 evaluates at -0.19, as seen in the continuation Qf3 Nf6 d3 e5 Bg5 d5. While playable, early queen sorties generally concede the modest initiative that Nc3 preserves.