c4 Space Line

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.c4

White expands on the queenside and aims to restrict Black's central knight. The position often becomes a strategic struggle over central dark squares and development speed.

ECO Code

C42

Difficulty

Intermediate

Style

Positional

Key Theme

Space and restraint

Practical Plans

White Plan

Nc3, d4, Be2

White tries to challenge the e4 knight while preserving a healthy pawn structure.

Black Plan

...Be7, ...0-0, ...Re8

Black completes development and aims for timely ...Bf6 or ...Nc6 to coordinate pieces.

Key Point

Do not overextend

White's space edge is useful only if development stays on schedule.

Common Pitfalls

For White: Advancing too many pawns can create weak squares and tactical targets.

For Black: Failing to challenge White's center can lead to a long-term squeeze.

Space-Based Anti-Petrov Play

The c4 line is a practical choice for players who want strategic control and reduced theory.

Back to Petrov Defense Explore d3 Solid Line