About this opening
Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Fianchetto Variation is an opening in the Encyclopedia of Chess Openings,
classified under code C76. 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 12 half-moves from the
starting position, with the move sequence 1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 a6 5. Ba4 d6 6. d4 Bd7.
It belongs to the Ruy Lopez family.
Within that family this is a level-3 branch (the Morphy Defense → Modern Steinitz Defense → Fianchetto Variation line). The immediate parent line is Ruy Lopez: Morphy Defense, Modern Steinitz Defense, transitioned via 6…Bd7.
The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nc6, 3.Bb5 g6, 4.c3 a6, 5.Ba4 d6, 6.d4 Bd7. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.