About this opening
Ruy Lopez: Morphy Defense, Schliemann Defense Deferred is an opening in the Encyclopedia of Chess Openings,
classified under code C70. ECO group C (C00–C99)
covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached
after 8 half-moves from the
starting position, with the move sequence 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5.
It belongs to the Ruy Lopez family.
Within that family this is a level-2 branch (the Morphy Defense → Schliemann Defense Deferred line). The immediate parent line is Ruy Lopez: Morphy Defense, transitioned via 4…f5.
The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nc6, 3.Bb5 a6, 4.Ba4 f5. From this position exactly one named continuation is recorded in the encyclopaedia.