Flank openings

Polish Opening

1.b4

The Polish Opening starts with 1.b4 and is catalogued under ECO A00, in the flank openings half of the book. The catalog indexes 25 lines inside it, grouped into 25 named variations.

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Current setup

Move ideas

  1. 1.b4

    Advances the b-pawn to gain queenside space and control new squares.

    Idea: Prepare a fianchetto or discourage the opponent’s expansion on that wing.

  2. 1e6

    Advances to e6 to claim central space and control nearby key squares.

    Idea: Give the pieces room to develop behind a durable central foothold.

  3. 2.Bb2

    Develops the bishop to b2, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  4. 2Nf6

    Develops the knight to f6, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  5. 3.b5

    Advances the b-pawn to gain queenside space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  6. 3a6

    Advances the a-pawn to gain queenside edge space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  7. 4.a4

    Advances the a-pawn to gain queenside edge space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  8. 4axb5

    Captures the pawn on b5 and changes the local pawn or piece balance.

    Idea: Open lines in the queenside and reshape the center for the next phase.

  9. 5.axb5

    Captures the pawn on b5 and changes the local pawn or piece balance.

    Idea: Open lines in the queenside and reshape the center for the next phase.

  10. 5Rxa1

    Captures the rook on a1 and changes the local pawn or piece balance.

    Idea: Remove an active defender and improve the moving piece’s influence.

  11. 6.Bxa1

    Captures the rook on a1 and changes the local pawn or piece balance.

    Idea: Remove an active defender and improve the moving piece’s influence.

Book continuations

Waiting for Lichess game popularity.

0 moves
This is the end of the indexed line.

Named variations

Each line below is an indexed entry under Polish Opening. Open one to load it on the board and keep exploring from that position.

1 more named lines sit inside this family — the tree above walks all of them.

ECO groups openings by the structures they lead to, so these families tend to share plans with the Polish Opening.