Scandinavian Defense: what should White play?

In this position from the Scandinavian Defense, White faces a critical choice regarding how to handle the advanced e5 pawn and the pressure on the kingside. While the engine identifies Ne2 as the most precise continuation to prepare for a central or kingside expansion, the vast majority of practitioners opt for the aggressive h4. This position is characterized by a slight advantage for Black (eval -0.71 to -0.88), requiring White to play accurately to maintain compensation for the structural imbalances.

The strategic role of Ne2

Although Ne2 has not been recorded in the provided database of 22,879 games, it is the engine's top recommendation with an evaluation of -0.71. The move prepares to challenge the g6 via the Ne2 e6 Nf4 sequence, while keeping the kingside pawns flexible. By developing the knight to e2, White avoids blocking the f2 pawn, allowing for potential support of the center or a later f4 thrust.

The popularity of h4

The move h4 is the most common human choice, played in 39.2% of games (21,000 recorded instances). This move immediately threatens the g6 and forces Black to respond to the kingside expansion, typically leading to the line h4 h5 gxh5 Bxh5 Be2 Bxe2. While this leads to a slightly lower engine evaluation of -0.81, it creates immediate tactical complications and forces Black to find accurate defensive resources.

Alternative central and kingside approaches

White occasionally attempts the immediate central break e6, seen in 3.0% of games (1.6K recorded), which leads to a sharp struggle after e6 fxe6 d4 e5 dxe5 Nc6. Another rare but viable option is Nh3, played in 0.6% of games, which aims for the f4 square via a different route. These sidelines generally result in an evaluation around -0.83 to -0.88, suggesting that Black maintains a comfortable game regardless of White's chosen path.