A container class representing the information about a chess opening based on the Encyclopedia of Chess Openings (ECO). It is immutable.
1.0.0-beta.1
lunalobos
The ECO code (e.g., "E57", "B40").
The name of the opening or variation (e.g., "Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 6.Nf3 c5").