Petrov's Defense: Modern Attack

Before the first move

The Petrov Defense is a rock-solid response to White's e4, but the Modern Attack with 3. d4 immediately challenges the center's stability. Instead of the usual symmetrical maneuvering, White forces a direct confrontation, inviting you to decide between capturing the pawn or counter-attacking the center.

1. e4White

White opens with e4, the most popular move at all levels. It immediately establishes a presence in the center and prepares for rapid kingside development. Black has many choices here, from the solid e5 to the sharp Sicilian Defense with c5.

1... e5Black · your move

Reply with e5 to meet White's center pawn head-on. By mirroring White's move, you prevent them from occupying d4 for free and establish your own foothold in the heart of the board.

Other paths here: f6 (Barnes Defense) · g5 (Borg Defense) · h6 (Carr Defense) · f5 (Duras Gambit)

2. Nf3White

White plays Nf3, attacking the e5-pawn. This is the most common continuation, though you might occasionally see the aggressive Center Game with d4 or the unusual Alapin with Ne2. You must now decide how to defend your central pawn.

Other paths here: Ke2 (Bongcloud Attack) · d4 (Center Game) · c4 (English Opening: The Whale) · Ne2 (King's Pawn Game: Alapin Opening)

2... Nf6Black · your move

Develop your knight to f6 to counter-attack White's e4-pawn. This defines the Petrov Defense; rather than defending your own pawn, you create immediate tactical pressure against theirs to maintain the balance.

Other paths here: d5 (Elephant Gambit) · Qe7 (Gunderam Defense) · Bc5 (King's Pawn Game: Busch-Gass Gambit) · f6 (King's Pawn Game: Damiano Defense)

3. d4White

White plays d4, the Modern Attack, shifting away from the main line of Nxe5. This move challenges Black to find an active solution in the center. Other popular tries for White include the standard knight capture or the quieter Three Knights Game with Nc3.

Other paths here: Nxe5 (Petrov's Defense) · d3 (Russian Game: 3.d3) · Bc4 (Petrov's Defense: Italian Variation) · Nc3 (Petrov's Defense: Three Knights Game)

Where you stand

The position is now highly dynamic with tension between the d4 and e5 pawns. Black usually responds by capturing on e4 or d4, leading to open lines and rapid piece play. Both sides must prioritize quick development and king safety as the center is likely to open up very soon.

• f6-e4 Capture the central e4 pawn
• f3-e5 Take the e5 pawn if left hanging
• c1-g5 Develop the bishop to pin the knight
• f8-d6 Place the bishop on an active diagonal