What is the main line of a chess opening? - Quora

Answer (1 of 4): The mainline is the series of moves that are considered most challenging for both sides. What is the most challenging is sometimes subject to trends. For example, the mainline Stonewall Dutch and the Qc2 Nc3 system, Avrukh considers about equal in strength. Nonetheless, people ar

What is the main line of a chess opening? - Quora

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What are the different types of chess openings? - Quora

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Basic Principles of Chess Openings

Which chess openings should I study first? - Quora

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What is the worst chess opening that has a name? - Quora