Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation

1.
1. Nf3
2. c5
2.
3. c4
4. g6
3.
5. d4
6. Bg7
4.
7. e4
8. Qa5+

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The Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation is a chess opening classified under ECO code A04 (Flank openings). It is a variation of the Modern Defense family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.