Openings
What is a MCO in chess?
- Opening
- Plans
- Move Order
MCO is a chess abbreviation. In practical terms, it refers to modern Chess Openings, a popular chess opening reference. Often the edition is also given, as in MCO-14, the 14th edition. Compare ECO. If you see it in a database, book, or tournament page, treat it as shorthand and check the surrounding context.
What to look for on the board
- Development, center control, and king safety.
- The pawn break each side wants.
- Whether a move creates a familiar structure.
Related terms
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