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Polish Defense A40

A — Flank openings · Family: Polish Defense

1. d4 b5

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The Polish Defense is catalogued under the ECO code A40. Its main line runs 1. d4 b5.

After 2 half-moves the diagrammed position is reached and it is White to move. Material is balanced.

This encyclopedia records 2 variations inside the “Polish Defense” family — compare the branching lines in the tree below.

Play through the moves on the board above, explore the variations tree below — click any move of any branch — then test yourself against the engine from the position you picked.

• Position after 2 half-moves — White to move.
• Material is balanced.
• Family “Polish Defense” contains 2 recorded variation(s) here.

Variations tree of the Polish Defense family

Click any move to jump to that position; switch branches at any point with the alternative moves. Test your knowledge plays the shown position against the engine.

Variations of this family

Related openings

Nearby ECO codes in the A — Flank openings volume — compare the move orders:

• Australian Defense (A40)
• English Defense (A40)
• Englund Gambit (A40)
• Englund Gambit Declined (A40)
• Horwitz Defense (A40)
• Mikenas Defense (A40)