Kiddush on Yom Kippur

        Kiddush on Yom Kippur

                              (especially this year)

Kiddush on Friday night is דאורייתא.

Mitzvos דאורייתא requires כוונה.

Kiddush on Yom Kippur is a מחלוקת between R.Akiva

Eiger who holds it is not דאורייתא unless it falls on a 

Shabbos and the Chasam Sofer (Hagahos O.Ch.271) who 

holds it is a Mitzvah דאורייתא to make Kiddush every 

Yom Kippur. (even weekday)

This year even according to Reb Akiva Eiger, when Davening the

Shmonah Esrei on Yom Kippur night you are required to

 have in mind when saying

ברוך – מקדש ישראל ויום הכפורים

to be Mekayam  (Yotzei)  Mitzvahs Kiddush.

Mori V'Rabi Harav Hagaon R. Shlomo Miller Shlita, said

Those who are not aware of this Halacha that מקדש ישראל ויום הכפורים

is the Kiddush of Yom Kippur will not be Yotzei even according to Reb Akiva Eiger 

in a weekday Yom Kippur since he is a מתעסק ( worse than no Kavanah)