Polish Opening

1.b4

ECO A00

The Polish Opening is a chess opening reached after 1.b4, catalogued under code A00 in the Encyclopaedia of Chess Openings (ECO).

The defining move b4 is chosen by White on move 1.

22 named continuations branch from this position, including the with d5 and the Baltic Defense.

Named variations

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.