CREATE TABLE table_name_33 (round VARCHAR, position VARCHAR, player VARCHAR)
What is the total number of rounds that Center position Denis Arkhipov have?
SELECT COUNT(round) FROM table_name_33 WHERE position = "center" AND player = "denis arkhipov"
SELECT COUNT(DISTINCT round) FROM table_name_33 WHERE position = 'Center' AND player = 'Denis Arkhipov';