Petrov's Defense: Modern Attack: what should White play?

In the Petrov's Defense: Modern Attack, White reaches a critical tactical juncture where the pawn on f2 is under heavy pressure from Black's minor pieces. Engine analysis favors Bc4 as the most incisive reply, retaining a slight advantage with an evaluation of +0.22 despite being played in only 10.7% of games (36K recorded). By meeting Black's threats with counter-aggression toward f7, White initiates sharp tactical complications that test Black's king safety.

Tactical Sharpness with Bc4

The tactical idea behind Bc4 is to ignore the immediate fork threat against f2 and instead mount a direct counter-assault on Black's weak f7 square. The engine continuation illustrates this dynamic clash through Bc4 Nxf2 Bxf7+ Kxf7 Qd5+ Kg6, where White drags the black king into the open using an active queen and bishop battery. Rather than retreating into passivity, White accepts piece exchanges to disrupt Black's coordination and exploit the displaced monarch.

The Popular Solid Choice: Be3

In human practice, players overwhelmingly prefer the defensive developing move Be3, which appears in 75.7% of the recorded games (254K recorded). While solid, the move relinquishes White's edge, holding an engine evaluation of -0.11. The main line runs Be3 Bxe3 fxe3 d5 exd6 Nc6, leading to an imbalanced pawn structure where White's doubled e-pawns are offset by open central files.

Other Continuations and Inaccuracies

Alternative tries yield less favorable positions for White. Attempting immediate aggression with the central queen thrust Qd5 accounts for 9.7% of games (33K recorded) with an evaluation of -0.39, meeting Qd5 Bxf2+ Ke2 f5 Nc3 c6 where White's king is forced onto e2. More passive defensive moves such as Qe2 (-1.16, 3.6% of games) and Be2 (-1.53, 0.3% of games) surrender the initiative entirely to Black after checks on f2.