CREATE TABLE table_18173916_6 (friday VARCHAR, wednesday VARCHAR)

How many episodes were shown on Friday if 210 Kirby's Epic Yarn was shown on Wednesday?
SELECT COUNT(friday) FROM table_18173916_6 WHERE wednesday = "210 Kirby's Epic Yarn"
SELECT COUNT("friday") FROM "table_18173916_6" WHERE "210 Kirby's Epic Yarn" = "wednesday"