King's Pawn Opening

An entry in the Encyclopedia of Chess Openings (ECO C20), reached after 3 half-moves: 1. e4 e5 2. b3.

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

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

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2…Nc6 1 line
- C20 Van Hooydoon Gambit
2…Nf6 1 line
- C20 Speers

About this opening

King's Pawn Opening is an opening in the Encyclopedia of Chess Openings, classified under code C20. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 3 half-moves from the starting position, with the move sequence 1. e4 e5 2. b3.

The opening sequence in prose form: 1.e4 e5, 2.b3. From this position 2 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.