About this opening
Amsterdam Attack is an opening in the Encyclopedia of Chess Openings,
classified under code A00. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 8 half-moves from the
starting position, with the move sequence 1. e3 e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6.
The opening sequence in prose form: 1.e3 e5, 2.c4 d6, 3.Nc3 Nc6, 4.b3 Nf6. 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.