Scandinavian Defense: Main Line: what should Black play?

In the Scandinavian Defense: Main Line, Black reaches a crossroads after White develops c3 and stabilizes the center with d3. The most popular choice by a wide margin is Nf6, selected in 62.8% of over 1.57 million recorded games, developing the kingside knight toward natural central control. Alternatively, the computer's top evaluation of +0.23 belongs to the modern fianchetto attempt g6, seen in 1.4% of games.

Development with Nf6

The classic strategy centers on Nf6, leading the statistics with 991K recorded games and holding White to a 47.6% score. This natural developing move brings Black closer to kingside castling while keeping flexible options for the queen on a5. An illustrative continuation runs Nf6 Nf3 Nc6 Be2 g6 O-O, where Black combines knight activity with a subsequent fianchetto setup to coordinate harmonious piece play against White's modest center.

The Modern Fianchetto Idea

While chosen in only 21K games, the subtle pawn push g6 earns the lowest engine assessment at +0.23, with White scoring 50.1%. By immediately planning to develop the bishop to g7, Black prepares pressure along the long diagonal without committing the kingside knight prematurely. The engine highlights the illustrative line g6 g3 Nf6 Bd2 Bg7 Bg2, where both sides contest the central diagonals in a balanced, positional struggle.

Popular Alternatives

Black also frequently selects Nc6, appearing in 19.8% of recorded games (313K instances, eval +0.27) with White scoring 48.7%, transposing toward similar setups after Nc6 Nf3 Nf6 Be2 g6 O-O. For those seeking direct central space, e5 is played in 11.7% of games (eval +0.28, White scoring 52.8%), while c5 represents 4.3% of games (eval +0.38, White scoring 50.8%).