| Abbreviation | Definition |
|---|---|
| DCAPM | District Chess Association Of Paschim Medinipur |
| DCMS | Dutchess County Medical Society |
| DGCC | Downers Grove Chess Club |
| DM | Desperation Move |
| DYCO | Delaware Youth Chess Organization |
| ECA | Eagle Chess Academy, Forestville, Maryland |
| ECA | Emory Chess Association, Atlanta, Georgia |
| ECO | Encyclopedia of Chess Openings |
| ECO | Encylopedia Of Chess Openings |
| EEC | Emiles Evolutionary Chess |
| EEC | Emile's Evolutionary Chess |
| EFCC | English Federation for Correspondence Chess |
| EGCA | East Glamorgan Chess Association |
| EOC | Encyclopedia Of Chess |
| EOCA | Eastern Ontario Chess Association |
| EP | En Passant |
| ESCC | Evansville Scholastic Chess Club |
| ETCC | European Team Chess Championship |
| EYCC | European Youth Chess Championship |
| FC | Forestall a Competitor |