Indian Defense: Gibbins-Weidenhagen Gambit, Stummer Gambit

An entry in the Encyclopedia of Chess Openings (ECO A45), reached after 9 half-moves: 1. d4 Nf6 2. g4 Nxg4 3. e4 d6 4. Be2 Nf6 5. Nc3.

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

Indian Defense: Gibbins-Weidenhagen Gambit, Stummer Gambit is an opening in the Encyclopedia of Chess Openings, classified under code A45. ECO group A (A00–A99) covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. g4 Nxg4 3. e4 d6 4. Be2 Nf6 5. Nc3.

It belongs to the Indian Defense family. Within that family this is a level-2 branch (the Gibbins-Weidenhagen Gambit → Stummer Gambit line). The immediate parent line is Indian Defense: Gibbins-Weidenhagen Gambit, transitioned via 5.Nc3.

The opening sequence in prose form: 1.d4 Nf6, 2.g4 Nxg4, 3.e4 d6, 4.Be2 Nf6, 5.Nc3. 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.