About this opening
Zukertort Defense: Sicilian Knight Variation is an opening in the Encyclopedia of Chess Openings,
classified under code A04. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 4 half-moves from the
starting position, with the move sequence 1. Nf3 Na6 2. e4 c5.
The opening sequence in prose form: 1.Nf3 Na6, 2.e4 c5. 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.