CREATE TABLE table_29570 ("Game" FLOAT, "March" FLOAT, "Opponent" TEXT, "Score" TEXT, "Location/Attendance" TEXT, "Record" TEXT, "Points" FLOAT, "Decision" TEXT)

How many times did they play the pittsburgh penguins?
SELECT COUNT("March") FROM table_29570 WHERE "Opponent" = 'Pittsburgh Penguins'
SELECT COUNT("March") FROM "table_29570" WHERE "Opponent" = 'Pittsburgh Penguins'