ECO Codes
The ECO Codes is a classification 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".
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1. d4 Nf6 2. c4 d6
- 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5
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1. d4 Nf6 2. c4 d6 3. Nc3 e5
- 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. e3 Nbd7 5. Bd3
- 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3
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1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4