The teacher is the well known Rabbbi Yidel Melber, shlita, Rosh Hakahal of Skver Avreichim Shtibel in Boro Park. Today he is the magid shiur in Karlin Stolin. 
He took his class of Talmud Torah Ahavas Yisroel Viznitz of Williamsburg, year end 5767 to be tested by the Grand Rabbi Of Kosov in Boro Park.