ECO stands for the Encyclopaedia of Chess Openings. It lists all the mainstream openings under a code, A-E, 0-99. For example, C30 is the King's Gambit, and A04 is the Reti Opening.
ECO stands for the Encyclopaedia of Chess Openings. It lists all the mainstream openings under a code, A-E, 0-99. For example, C30 is the King's Gambit, and A04 is the Reti Opening.
What is ECO.