About this opening
Polish Opening: Grigorian Variation 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 2 half-moves from the
starting position, with the move sequence 1. b4 Nc6.
It belongs to the Polish Opening family. Within that family this is a sub-variation (the Grigorian Variation line).
The opening sequence in prose form: 1.b4 Nc6. 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.