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    Chess Openings

    Colle System: Pterodactyl Variation

    1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+ · ECO A40

    Colle System: Pterodactyl Variation position after 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+. White: pawn on d4, bishop on d3, pawn on e3, knight on f3, pawn on a2, pawn on b2, pawn on c2, pawn on f2, pawn on g2, pawn on h2, rook on a1, knight on b1, bishop on c1, queen on d1, king on e1, rook on h1. Black: rook on a8, knight on b8, bishop on c8, king on e8, knight on g8, rook on h8, pawn on a7, pawn on b7, pawn on d7, pawn on e7, pawn on f7, bishop on g7, pawn on h7, pawn on g6, queen on a5, pawn on c5.

    Colle System: Pterodactyl Variation is a chess opening that arises after 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+. It is classified A40 in the ECO system, and the position after these moves has white to move.

    This line is a variation within the Colle System family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+.

    Frequently asked questions

    What is the Colle System: Pterodactyl Variation?
    The Colle System: Pterodactyl Variation is a chess opening that arises after 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+. It is classified A40 in the ECO system.
    What are the moves of the Colle System: Pterodactyl Variation?
    1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+. After these moves it is white to move.

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