Polish Opening: Queenside Defense

An entry in the Encyclopedia of Chess Openings (ECO A00), reached after 6 half-moves: 1. b4 e6 2. Bb2 Nf6 3. b5 a6.

Black rook — Use ← → arrows or click moves to step through.

Black knight — Use ← → arrows or click moves to step through.

End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

Polish Opening: Queenside Defense is an opening in the Encyclopedia of Chess Openings, classified under code A00. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 6 half-moves from the starting position, with the move sequence 1. b4 e6 2. Bb2 Nf6 3. b5 a6.

It belongs to the Polish Opening family. Within that family this is a sub-variation (the Queenside Defense line).

The opening sequence in prose form: 1.b4 e6, 2.Bb2 Nf6, 3.b5 a6. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.