Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation: what should White play?

In the Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation, White should play c3 to immediately attack the advanced knight on d4. This pawn thrust carries an engine evaluation of +4.25 and is by far the primary choice in master and amateur practice, capturing an 81.8% share across 1.47M recorded games. By compelling Black to address the threatened piece, White takes control of the center and secures a decisive opening advantage.

The dominance of c3

The primary continuation c3 punishes Black's early piece excursion by driving the knight away from d4. In the illustrative main line c3 Nc6 dxc6 Nf6 Nf3 Bc5, White accepts the knight exchange on c6 and emerges with a full extra piece while Black attempts counterplay against the f2 pawn. Because the retreat options for the knight are awkward, Black struggles to justify the opening setup without incurring severe material or positional concessions.

Less incisive alternatives

White players occasionally test other moves, though none match the theoretical strength of the main recommendation. Developing with Be3 appears in 13.6% of games (245K recorded) with an evaluation of +1.25, while the aggressive flank push f4 accounts for 3.7% of games (66K recorded) with a +1.77 evaluation. White can also opt for Bd3 (eval +1.36, played in 0.9% of games across 17K encounters) or the engine-favored sideline a4 (eval +3.24), which leads into a4 Qh4 Nd2 Bc5 g3 Qf6. However, these options give Black unnecessary breathing room compared to the direct strike of c3.