About this opening
Zukertort Opening: Tennison Gambit is an opening in the Encyclopedia of Chess Openings,
classified under code A06. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 3 half-moves from the
starting position, with the move sequence 1. e4 d5 2. Nf3.
It belongs to the Zukertort Opening family. Within that family this is a sub-variation (the Tennison Gambit line).
The opening sequence in prose form: 1.e4 d5, 2.Nf3. From this position exactly one named continuation is recorded in the encyclopaedia.