Sicilian Defense: Hyperaccelerated Pterodactyl

An entry in the Encyclopedia of Chess Openings (ECO B27), reached after 6 half-moves: 1. e4 c5 2. Nf3 g6 3. d4 Bg7.

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4.dxc5 1 line
- B27 Exchange Variation

About this opening

Sicilian Defense: Hyperaccelerated Pterodactyl is an opening in the Encyclopedia of Chess Openings, classified under code B27. ECO group B (B00–B99) covers semi-open games (1.e4 with Black playing anything other than 1…e5), with the Sicilian, French, Caro-Kann and Pirc/Modern at its heart. This particular variation is reached after 6 half-moves from the starting position, with the move sequence 1. e4 c5 2. Nf3 g6 3. d4 Bg7.

It belongs to the Sicilian Defense family. Within that family this is a sub-variation (the Hyperaccelerated Pterodactyl line).

The opening sequence in prose form: 1.e4 c5, 2.Nf3 g6, 3.d4 Bg7. From this position exactly one named continuation is recorded in the encyclopaedia.