ECO code: A08
Opening Name: French Defense: King's Indian Attack (KIA), Reversed Philidor c5 5.g3
Moves: 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3
Description: This line is a flexible and somewhat subtle approach for White within the French Defense structure. White adopts a King's Indian Attack setup—characterized by a solid pawn chain with d3 and e4—and develops pieces harmoniously without committing early to central tension. The move 5.g3 is aimed at fianchettoing the bishop, reinforcing control over the dark squares, especially the long diagonal towards Black’s queenside and center.
Characteristic of 5.g3: This move supports a solid and hypermodern setup, focusing on controlling the center from a distance rather than immediate occupation. It also prepares to castle kingside safely and enhances the coordination of White's minor pieces.
Attacking or Defensive: For White, this setup is more positional and somewhat defensive, prioritizing a strong, flexible structure rather than direct aggression. Black, meanwhile, can challenge the center actively with c5 and pressure White's setup.
Center Control: White does not directly attack the center early with pawns beyond e4 and d3 but exerts influence through piece placement and the fianchettoed bishop. Black aims to challenge and undermine White’s center with c5 and d5 pawns.
This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.