Indian Defense · A45

Gibbins-Weidenhagen Gambit, Oshima Defense

1. d4 Nf6 2. g4 e5

In the centre, White holds d4 while Black holds e5.

The first 4 moves, explained

• 1. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
• 1... Nf6 Develops the knight to f6, eyeing d5 and e4.
• 2. g4 Opens the f1-h3 diagonal for the bishop. The pawn is genuinely on offer - this is the Gibbins-Weidenhagen Gambit: development and initiative over material.
• 2... e5 Stakes a claim in the centre, controlling d4, and frees the bishop and queen. Theory calls this the Oshima Defense.

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