Chess Codex
Tree path 10 levels King's Pawn Game › Sicilian Defense › Sicilian Defense › Hyperaccelerated Dragon › Sicilian Defense: Hyperaccelerated Dragon › Sicilian Defense: Hyperaccelerated Pterodactyl › Pterodactyl Defense: Western, Rhamphorhynchus › Pterodactyl Defense: Sicilian, Rhamphorhynchus › Pterodactyl Defense: Sicilian, Pteranodon › Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation
  1. Chess Codex
  2. King's Pawn Game B00
  3. Sicilian Defense B20
  4. Sicilian Defense B27
  5. Hyperaccelerated Dragon B27
  6. Sicilian Defense: Hyperaccelerated Dragon B27
  7. Sicilian Defense: Hyperaccelerated Pterodactyl B27
  8. Pterodactyl Defense: Western, Rhamphorhynchus B27
  9. Pterodactyl Defense: Sicilian, Rhamphorhynchus B27
  10. Pterodactyl Defense: Sicilian, Pteranodon B27
  11. Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation B27 you are here
B27

Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation

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Overview

Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation is a variation within the Semi-Open Games family, indexed as ECO B27.

The Semi-Open Games group covers semi-open games — replies to 1.e4 where Black declines the symmetrical 1…e5 in favour of an asymmetric pawn structure.

It is reached after 12 plies of play, with the move sequence 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+.

It is a variation of Pterodactyl Defense: Sicilian, Pteranodon, which itself descends from the root opening King's Pawn Game.

Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.

ECO code
B27
Group
Semi-Open Games (B)
Plies
12
Parent
Pterodactyl Defense: Sicilian, Pteranodon

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