The Ridiculous Ruy Lopez Opening: Marshall Attack, Modern, Main Line, Spassky Variation - Chess Forums

This is perhaps the longest variation of opening theory I've ever seen. It's called "Ruy Lopez Opening: Marshall Attack, Modern, Main Line, Spassky Variation" and only occurs after 19 moves.

Ruy Lopez: Marshall, main line, Spassky variation

Why has Ruy Lopez, a chess opening, been so popular for so long? - Quora

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Marshall Gambit - Playing Against the Ruy Lopez - Chessable Blog

The Ridiculous Ruy Lopez Opening: Marshall Attack, Modern, Main Line, Spassky Variation - Chess Forums

The Kenilworthian

Play it Forward Forward Ever, Backward Never

How to create new chess openings - Quora

Chess Openings For White PDF Free

What is the single best chess opening for average players to master? - Quora

Tartajubow On Chess II: 2019

The Kenilworthian

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In theory, is it possible to master the king's gambit to the point that it can work around Fischer's defense? - Quora