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Walk any move order through the catalog: pick a book continuation and watch the board, or open the matching ECO lines on the side. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.

1. e4 e5 2. f4 exf4 3. Nf3 ◀ Undo move

♞ You have reached King's Gambit Accepted: King's Knight's Gambit C34 — the catalogued line ends exactly here.

Book continuations

g5 69 Be7 4 d5 4 d6 4 Nc6 3 Nf6 2 h6 2 Ne7 1 f5 1 h5 1

Matching openings 92

King's Gambit Accepted: Becker Defense C34 1 ply deeper
King's Gambit Accepted: Bonsch-Osmolovsky Variation C34 1 ply deeper
King's Gambit Accepted: Fischer Defense C34 1 ply deeper
King's Gambit Accepted: Gianutio Countergambit C34 1 ply deeper
King's Gambit Accepted: King's Knight's Gambit C34 1 ply deeper
King's Gambit Accepted: MacLeod Defense C34 1 ply deeper
King's Gambit Accepted: Schallopp Defense C34 1 ply deeper
King's Gambit Accepted: Wagenbach Defense C34 1 ply deeper
King's Gambit Accepted: Cunningham Defense C35 1 ply deeper
King's Gambit Accepted: Modern Defense C36 1 ply deeper
King's Gambit Accepted: Fischer Defense, Schulder Gambit C34 2 plies deeper
King's Gambit Accepted: Modern Defense C36 2 plies deeper

…and 80 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia