ECO code: A00
Polish Opening: King's Indian Variation
Moves: 1. b4 Nf6 2. Bb2 g6 3. c4 Bg7 4. e3 d6 5. Nf3
This variation of the Polish Opening combines the flank pawn advance 1.b4 with a setup reminiscent of the King's Indian Defense from Black's perspective. White fianchettoes the queenside bishop early with Bb2, aiming to exert long-range pressure along the diagonal towards Black's center and kingside.
Characteristic: The move 3.c4 is a key thematic thrust that challenges the center indirectly and supports control over the important d5 square. White builds a flexible pawn structure that can adapt between aggressive central play or stable positional development.
Attacking or Defensive: From White's side, this setup is generally flexible, leaning towards a strategic, positional approach with potential for central and queenside expansion rather than immediate attacks. Black’s setup with ...g6 and ...Bg7 signals a King's Indian Defense style, aiming for dynamic counterplay in the center and kingside.
Center Control: While White does not immediately occupy the center with pawns, the moves c4 and e3 support central squares and prepare for eventual d4, contesting Black's center. Black aims to challenge White's center with ...d6 and potential ...e5 breaks later.
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.