EN
The article presents the rules of intestacy under Polish law of succession. It shows who inherits the property of a decedent with intellectual disability and what part of that property depending on the number of related heirs and the degree of kinship. Since these rules are very complex, they are presented with numerous examples. The situation of both biological and adoptive family is discussed as well as the rules of intestacy when there is no family. The article also points out the procedure used in the case of intestate heirs who should not inherit from the testator due to their behavior toward the testator, that is the rule of unworthiness to inherit. intestacy, intestate heir, share in the estate, unworthiness