ECO Codes


The ECO Codes is a clasification system for the chess openings moves. Below is a list of chess openings organized by the Encyclopaedia of Chess Openings (ECO) code. The openings are divided in five volumes labeled from "A" through "E".

ECO Moves Opening    
C42 1. e4 e5 2. Nf3 Nf6 Petrov's defence  
C43 1. e4 e5 2. Nf3 Nf6 3. d4 Petrov, modern (Steinitz) attack