Don't Forget To Make Kiddush

      Kiddush on Yom Kippur

Mitzvos  דאורייתא (Min Hatorah) requires Kavanah,

otherwise, you are not יוצא.

Kiddush on Friday night is דאורייתא .

Kiddush on Yom Kippur is a Machlokes between R.Akiva

Eiger who holds it is not דאורייתא * and the Chasam Sofer

(Hagahos O.Ch.271) who holds it is a Mitzvah דאורייתא  to

make Kiddush on Yom Kippur.

According to the Chasam Sofer when Davening the

Shmonah Esrei on Yom Kippur night you are required to

 have in mind (Kavanah) when saying

ברוך – מקדש ישראל ויום הכפורים

to be יוצא מצות קידוש.

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

"Those who are unaware that this Bracha is the Kiddush for יו"כ

are מתעסק which is worse than not having Kavanah.

Everybody will agree in this case you are not  יוצא מצות קידוש

even according to R.A. Eiger who holds it's דרבנן ".

*Yom Kippur that falls on Shabbos

even R.A.E. will admit it's Deorysa

and needs Kavanah