About this opening
Ruy Lopez: Classical Defense, Boden Variation is an opening in the Encyclopedia of Chess Openings,
classified under code C64. 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 Bc5 4. c3 Qe7.
It belongs to the Ruy Lopez family. Within that family this is a level-2 branch (the Classical Defense → Boden Variation line).
The opening sequence in prose form: 1.e4 e5, 2.Nf3 Nc6, 3.Bb5 Bc5, 4.c3 Qe7. 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.