Main lineC20
1. e4 e5 2. Bb5
Black's pawn on d7 is pinned against the king.
C20
Portuguese Opening
3 named lines in this family, ECO C20. Every one of them opens 1. e4 e5 2. Bb5, so the notes on those moves are written once, just below, instead of once per line. Under each line you get its moves and the sentences it adds that this page has not already printed. A line's own page carries up to its first 4 per-move notes in full.
The moves every line here plays
1. e4 e5 2. Bb5
- 1. e4 Stakes a claim in the centre, controlling d5, and frees the bishop and queen.
- 1... e5 Stakes a claim in the centre, controlling d4, and frees the bishop and queen.
- 2. Bb5 Develops with a pin: the pawn on d7 is stuck shielding the king. Theory calls this the Portuguese Opening.
Miguel GambitC20
1. e4 e5 2. Bb5 Bc5 3. b4
- 2... Bc5 Develops the bishop to c5, eyeing d4. It eyes f2, the one square only the king defends.
Portuguese GambitC20
1. e4 e5 2. Bb5 Nf6 3. d4
The pawns on d4 and e5 stand in direct tension - the first player to resolve it chooses the structure.
- 2... Nf6 Develops the knight to f6, eyeing d5 and e4.
Walk these lines on a board
An account opens every move's note in this family, the plan behind each line, and a trainer that plays the line back at you. It is free.