Library/Openings/Neo-Grünfeld Defense/Classical Variation/Original Defense ECO D78
Opening· 12 plies

Neo-Grünfeld Defense: Classical Variation, Original Defense

An entry in the Encyclopedia of Chess Openings (ECO D78), reached after 12 half-moves: 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5.

Neo-Grünfeld Defense: Classical Variation, Original Defense ECO D78
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Black rook
Black knight
Black bishop
Black queen
Black rook
Black king
Black pawn
Black pawn
Black pawn
Black pawn
Black bishop
Black pawn
Black pawn
Black knight
Black pawn
Black pawn
White pawn
White pawn
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White bishop
White pawn
White rook
White knight
White bishop
White queen
White rook
White king
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End of this line

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About this opening

Neo-Grünfeld Defense: Classical Variation, Original Defense is an opening in the Encyclopedia of Chess Openings, classified under code D78. 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 12 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5.

The opening sequence in prose form: 1.d4 Nf6, 2.c4 g6, 3.Nf3 Bg7, 4.g3 O-O, 5.Bg2 c6, 6.O-O d5. 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.