Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_56 (most_recent VARCHAR, height__m_ VARCHAR, first_time_as_hc_climb VARCHAR)

### Question ###
What was the most recent year a height of 2770 m and a HC climb before 1992 was climbed?

### Accurate SQL ###

SELECT COUNT(most_recent) FROM table_name_56 WHERE height__m_ = "2770" AND first_time_as_hc_climb < 1992