| Related Openings | |
|---|---|
| Modern defense - Averbakh system, Kotov Variation | d4, d6, c4, g6, Nc3, Bg7, e4, Nc6 |
| Modern defense - Averbakh system, Randspringer Variation | d4, d6, c4, g6, Nc3, Bg7, e4, f5 |
| Pterodactyl defense | d4, d6, c4, g6, Nc3, Bg7, e4, c5, Nf3, Qa5 |