Wikidata:Property proposal/ECO code

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ECO code

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Originally proposed at Wikidata:Property proposal/Generic

   Done: ECO code (P9838) (Talk and documentation)
Descriptionchess openings identifier, attributed by the Encyclopaedia of Chess Openings (Q13218856)
RepresentsECO code (Q108335666)
Data typeExternal identifier
Template parameterECO
DomainQ103632
Example 1Larsen's Opening (Q645666) → A01
Example 2Ruy Lopez (Q1290671) → C77
Example 3Pirc Defence (Q678245) → B07
Example 4Queen's Gambit Accepted (Q537790) → D20
Number of IDs in source500
Expected completenessalways incomplete (Q21873886)
Wikidata projectWikidata:WikiProject_Games

Motivation

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The ECO code seems to be the reference in the domain, and would allows to browse instances of chess opening (Q103632) in a more structured way. In some cases, it seems to be more of a classification than an identifier, with a single ECO code applying to several variations, so the uniqueness constrain should probably not be applied. Maxlath (talk) 13:53, 22 August 2021 (UTC)[reply]

Discussion

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