About this opening
Barnes Opening: Hammerschlag 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 3 half-moves from the
starting position, with the move sequence 1. f3 e5 2. Kf2.
It belongs to the Barnes Opening family. Within that family this is a sub-variation (the Hammerschlag line).
The opening sequence in prose form: 1.f3 e5, 2.Kf2. 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.