About this opening
Nimzo-Larsen Attack is an opening in the Encyclopedia of Chess Openings,
classified under code A01. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 1 half-move from the
starting position, with the move sequence 1. b3.
The opening sequence in prose form: 1.b3. From this position 7 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.