CREATE TABLE table_21886 ("Tie no" FLOAT, "Home team" TEXT, "Score 1" TEXT, "Away team" TEXT, "Attendance" FLOAT)

What tie number featured Chelsea as the home team?
SELECT MIN("Tie no") FROM table_21886 WHERE "Home team" = 'Chelsea'
SELECT MIN("Tie no") FROM "table_21886" WHERE "Home team" = 'Chelsea'