King's Gambit Declined: Classical Variation

An entry in the Encyclopedia of Chess Openings (ECO C30), reached after 4 half-moves: 1. e4 e5 2. f4 Bc5.

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3.Nf3 3 lines
3.Qh5 1 line
- C30 Walthoffen Attack

About this opening

King's Gambit Declined: Classical Variation is an opening in the Encyclopedia of Chess Openings, classified under code C30. 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 4 half-moves from the starting position, with the move sequence 1. e4 e5 2. f4 Bc5.

The opening sequence in prose form: 1.e4 e5, 2.f4 Bc5. From this position 2 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.