Thank you @Opus 17 for you response. I have couple more short questions:
1. Do I have to mail all 6 pages or only page 1 and 6. I'll be filing only Part IV?
2. Should I check box "initial return"?
3. I received percentage of real estate (3/8 of a house), should I include this info in the "Description of property received"?
4. In the part IV (a) "Date of gift or bequest", should I write date of death (December 2021) or legal receiving (January 2021)? I guess this would affect the year for which I should file the form. I'm not sure if in the US date of death is also considered date of receiving the inheritance or not.
Thanks,
