Tree path 7 levels King's Pawn Game › Modern Defense › Modern Defense › Standard Line › Modern Defense: Modern Pterodactyl › Pterodactyl Defense: Eastern, Rhamphorhynchus › Pterodactyl Defense: Eastern, Pteranodon
B06

Pterodactyl Defense: Eastern, Pteranodon

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Overview

Pterodactyl Defense: Eastern, Pteranodon is a specific line in the Semi-Open Games family (ECO B06), arising from a recognised theoretical position.

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.

The line arises from 10 plies — specifically the moves 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5.

The line refines Pterodactyl Defense: Eastern, Rhamphorhynchus, which traces back to the root opening King's Pawn Game.

Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.

ECO code
B06
Group
Semi-Open Games (B)
Plies
10
Parent
Pterodactyl Defense: Eastern, Rhamphorhynchus

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