Ruy Lopez: Morphy Defense, Steinitz Deferred

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6

ECO C79

The Ruy Lopez: Morphy Defense, Steinitz Deferred is a chess opening line in the Ruy Lopez complex, reached after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6.

It is catalogued under code C79 in the Encyclopaedia of Chess Openings (ECO).

The defining move d6 is chosen by Black on move 5.

Study this line with a grandmaster

This position is covered in the Marshall Attack course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.