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Grob Opening: Spike Attack is a chess opening that arises after 1.g4 d5 2.Bg2 c6 3.g5. It is classified A00 in the ECO system, and the position after these moves has black to move.
This line is a variation within the Grob Opening family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.g4 d5 2.Bg2 c6 3.g5.