Morphy Defence, Closed Defence

The most common reply to Ruy Lopez opening is move "a6" for black which is called Morphy's defence. After Morphy's defence is played there are many variation

The Ruy Lopez Opening

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The Ultimate Guide to the King's Pawn Opening - Chessable Blog

Why is it that in the Ruy López: Morphy Defense, Closed variation the move 8. Nc3 is almost never played? : r/chess

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Path to Chess Mastery: September 2020