ECO Index C - C60-99
C60 Ruy Lopez, Unusual Black 3rd moves and 3...g6
C61 Ruy Lopez, Bird's Defense
C62 Ruy Lopez, Old Steinitz Defense
C63 Ruy Lopez, Schliemann Defense
C64 Ruy Lopez, Classical Cordel Defense
C65 Ruy Lopez, Berlin Defense, Mortimer Trap
C66 Ruy Lopez, Berlin Defense, 4.O-O, d6
C67 Ruy Lopez, Berlin Defense, Open Variation
C68 Ruy Lopez, Exchange Variation
C69 Ruy Lopez, Exchange Variation, 5.O-O
C70 Ruy Lopez
C71 Ruy Lopez, Modern Steinitz Defense, Noah's Ark Trap
C72 Ruy Lopez, Modern Steinitz Defense 5.0-0
C73 Ruy Lopez, Modern Steinitz Defense, Richter Variation
C74 Ruy Lopez, Modern Steinitz Defense
C75 Ruy Lopez, Modern Steinitz Defense
C76 Ruy Lopez, Modern Steinitz Defense, Fianchetto (Bronstein) Variation
C77 Ruy Lopez, Morphy Defense
C78 Ruy Lopez, 5.O-O
C79 Ruy Lopez, Steinitz Defense Deferred (Russian Defense)
C80 Ruy Lopez, Open Tarrasch Defense
C81 Ruy Lopez, Open, Howell Attack
C82 Ruy Lopez, Open, 9.c3
C83 Ruy Lopez, Open, Classical Defense
C84 Ruy Lopez, Closed Defense
C85 Ruy Lopez, Exchange Variation Doubly Deferred
C86 Ruy Lopez, Worrall Attack
C87 Ruy Lopez, Closed, Averbach Variation
C88 Ruy Lopez, Closed
C89 Ruy Lopez, Marshall Counterattack
C90 Ruy Lopez, Closed (with ...d6)
C91 Ruy Lopez, Closed, 9.d4
C92 Ruy Lopez, Closed, 9.h3
C93 Ruy Lopez, Closed, Smyslov Defense
C94 Ruy Lopez, Closed, Breyer Defense
C95 Ruy Lopez, Closed, Breyer, 10.d4
C96 Ruy Lopez, Closed, 8...Na5
C97 Ruy Lopez, Closed, Chigorin Defense
C98 Ruy Lopez, Closed, Chigorin, 12...Nc6
C99 Ruy Lopez, Closed, Chigorin, 12...cxd4
These are the well known
C60-99 Ruy Lopez Openings.