About this opening
Grünfeld Defense: Smyslov Defense is an opening in the Encyclopedia of Chess Openings,
classified under code D94. ECO group D (D00–D99)
covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached
after 14 half-moves from the
starting position, with the move sequence 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Bd3 O-O 7. O-O Bg4.
It belongs to the Grünfeld Defense family. Within that family this is a sub-variation (the Smyslov Defense line).
The opening sequence in prose form: 1.d4 d5, 2.c4 c6, 3.Nc3 Nf6, 4.e3 g6, 5.Nf3 Bg7, 6.Bd3 O-O. 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.