King's Indian Attack: Wahls Defense

An entry in the Encyclopedia of Chess Openings (ECO A05), reached after 10 half-moves: 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5.

Black rook — Use ← → arrows or click moves to step through.

Black knight — Use ← → arrows or click moves to step through.

End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

About this opening

King's Indian Attack: Wahls Defense is an opening in the Encyclopedia of Chess Openings, classified under code A05. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 10 half-moves from the starting position, with the move sequence 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5.

It belongs to the King's Indian Attack family. Within that family this is a sub-variation (the Wahls Defense line).

The opening sequence in prose form: 1.Nf3 Nf6, 2.g3 g6, 3.Bg2 Bg7, 4.O-O O-O, 5.d3 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.