About this opening
Grob Opening: Keene Defense 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 6 half-moves from the
starting position, with the move sequence 1. g4 d5 2. h3 e5 3. Bg2 c6.
It belongs to the Grob Opening family. Within that family this is a sub-variation (the Keene Defense line).
The opening sequence in prose form: 1.g4 d5, 2.h3 e5, 3.Bg2 c6. From this position exactly one named continuation is recorded in the encyclopaedia.