Philidor Defense: Lopez Countergambit

Before the first move

The Lopez Countergambit is an aggressive response within the Philidor Defense. By striking at the center with f5, you immediately challenge White's control and create a complex, double-edged struggle. Both sides must navigate sharp tactical lines where one slip can be decisive.

1. e4White

White plays e4, the most popular starting move. It immediately fights for the center and prepares to develop pieces. You have many responses here, from the solid e5 to the hypermodern Sicilian Defense or the French Defense.

1... e5Black · your move

Push your pawn to e5. By mirroring White's move, you stake your own claim in the center and prevent White from easily advancing further. This leads to the most traditional and theoretically rich opening structures.

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

2. Nf3White

White plays Nf3, the most common and strongest second move. It develops a piece with a direct threat. White could also try the Center Game with d4 or the Alapin with Ne2, but the knight move is the gold standard.

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

2... d6Black · your move

Move your pawn to d6 to defend e5. This defines the Philidor Defense. It is a solid, resilient structure that prepares to develop the kingside, though it results in a slightly more cramped position for your pieces initially.

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. Bc4White

White plays Bc4, a sharp alternative to the main line d4. By aiming at f7, White asks you how you intend to complete development. This move often leads to tactical skirmishes much earlier than the standard Philidor lines.

Other paths here: d4 (Philidor Defense)

3... f5Black · your move

Push your pawn to f5. This is the Lopez Countergambit. You are ignoring the pressure on f7 to strike back at the e4-pawn. This move creates immense tension and forces White to respond to your central aggression.

Other paths here: Be7 (Philidor Defense)

Where you stand

The position is now highly volatile. White usually continues with d3 or d4 to stabilize the center, while Black focuses on developing the knight to c6 and the bishop to e7. Both players must stay alert to tactical shots involving the f-file and the long diagonals.

• b8-c6 Develop the knight to challenge the center
• d2-d4 Strike the center to open lines
• e1-g1 Castle kingside to secure the king
• f8-e7 Prepare for castling and reinforce d6