Pterodactyl Defense: Eastern, Benoni
Overview
Pterodactyl Defense: Eastern, Benoni is a chess opening at the root of the Semi-Open Games family, classified under ECO code B06.
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.
Play reaches this position via 1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. d5, after 7 plies of opening development.
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
- 7
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
210,775 games · White 49.9% / Draw 4.7% / Black 45.4%
| Moves | Games | W / D / B |
|---|---|---|
| d6 | 147,472 | |
| Bxc3+ | 13,806 | |
| a6 | 11,945 | |
| Nf6 | 10,660 | |
| e6 | 9,949 | |
| Qa5 | 5,461 | |
| Qb6 | 4,477 | |
| e5 | 3,941 |
Source: Lichess Opening Explorer · cached 2026-09-26 01:33:49
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