Property talk:P8976

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Lichess username
username on the chess website lichess.org

Represents	Lichess (Q19831807)
Applicable "stated in" value	Lichess user database (Q104527435)
Has quality	case insensitive (Q55121183)
Data type	External identifier
Corresponding template	Template:Lichess player (Q109180025)
Template parameter	|1= or |id= in en:Template:Lichess player
Domain	human (Q5)
Allowed values	^[a-zA-Z][a-zA-Z0-9_\-]*[a-zA-Z0-9]$
Example	Yasser Seirawan (Q319208) → yasser-seirawan Vadim Afanasiev (Q27522832) → Managing_Cat Elina Danielian (Q433358) → ClassyEl Anna Ushenina (Q82655) → Enki007
Formatter URL	https://lichess.org/@/$1
See also	Chess.com member ID (P3654), Chessgames.com player ID (P1665), ChessTempo.com player ID (P3315), Chessclub.com member ID (P1666)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Constraint violations/P8976 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,032 Main statement 1,027 99.5% of uses Qualifier 4 0.4% of uses Reference 1 <0.1% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Format “^[a-zA-Z][a-zA-Z0-9_\-]*[a-zA-Z0-9]$”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8976#Format, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8976#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8976#Scope, SPARQL

Type “human (Q5)”: item must contain property “instance of (P31)” with classes “human (Q5)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Saint Louis Chess Club (Q17084738), Lichess (Q19831807), FIDE (Q102178)
List of violations of this constraint: Database reports/Constraint violations/P8976#Type Q5, SPARQL

Item “occupation (P106): chess player (Q10873124)”: Items with this property should also have “occupation (P106): chess player (Q10873124)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Saint Louis Chess Club (Q17084738), Lichess (Q19831807), FIDE (Q102178)
List of violations of this constraint: Database reports/Constraint violations/P8976#Item P106, search, SPARQL

This property is being used by: en:Template:Lichess player Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)