Italian Game: Classical Variation, Greco Gambit, Main Line: what to play after O-O?

In the Italian Game: Classical Variation, Greco Gambit, Main Line, White's most critical and engine-recommended continuation is d5. This thrust dislodges Black's knight from c6 and yields White an engine evaluation of +0.48. Although played in 32.4% of the 88,531 recorded games, d5 represents White's most successful try among the main options, scoring 60.9% of points.

Pushing the Center with d5

Advancing the d-pawn immediately strikes at Black's defensive coordination before Black can consolidate the extra central material. An illustrative engine continuation runs d5 Na5 Bd3 f5 d6 Nxd6, showing how White's pawn wedge destabilizes Black's knight placement and forces positional concessions. Pushing d5 preserves the initiative and keeps Black under tactical pressure, explaining why it substantially outperforms passive alternatives in practical scoring.

Popular Alternatives: Qc2 and Bd3

Despite the objective strength of the pawn push, the most common practical choice is Qc2, seen in 37.4% of games (33K recorded). However, after Qc2 d5 Bd3 Re8 Bf4 Bf5, White's evaluation drops to -0.52, scoring 50.9%. Similarly, retreating immediately via Bd3 accounts for 22.1% of games (20K recorded), leading to Bd3 d5 Qc2 Bf5 Rb1 b6 with a -0.54 evaluation and a 54.2% score. Both moves permit Black comfortable central counterplay with d5.

Minor Options: Ba3 and Ne5

Two sidelines exist in the database, though neither matches the top choice. Developing the bishop with Ba3 appears in 7.0% of encounters (eval -0.30, scoring 52.0%), continuing Ba3 d6 Re1 Nf6 h3 Bd7. The rarest path, Ne5, occurs in just 1.1% of games (eval -0.38, scoring 47.2%), which runs Ne5 d5 Nxc6 bxc6 Bd3 a5.