About this opening
Portuguese Opening: Portuguese Gambit 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 5 half-moves from the
starting position, with the move sequence 1. e4 e5 2. Bb5 Nf6 3. d4.
It belongs to the Portuguese Opening family. Within that family this is a sub-variation (the Portuguese Gambit line).
The opening sequence in prose form: 1.e4 e5, 2.Bb5 Nf6, 3.d4. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.