http://example.org/boardgame-ontology#UniqueIDConstraint
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
<http://example.org/boardgame-ontology#UniqueIDConstraint> a sh:PropertyShape ;
sh:datatype xsd:int ;
sh:maxCount 1 ;
sh:minCount 1 ;
sh:path <http://example.org/boardgame-ontology#hasID> ;
sh:unique true .