Ruy Lopez: Morphy Defense, Anderssen Variation

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How to Play the Ruy Lopez (Spanish) Opening - RagChess

The Ruy Lopez

Chess Opening Blunders, PDF, Chess Openings

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In the Ruy Lopez opening, are 4. Ba4 and 4. Bxc6 the only viable moves for the bishop after 3. … a6? - Quora

What are the differences between 12.d3 and 12.d4 in the Ruy Lopez, Marshall counter-attack? What does white hope to achieve with each? - Quora