CLEVELAND — Pushed to the brink, Kentucky's still perfect and still playing.Andrew Harrison made two free throws with six seconds remaining, and the top-seeded Wildcats kept their unbeaten season and national title hopes intact with a 68-66 win over Notre Dame on Saturday night in the NCAA Midwest Regional final.The Wildcats (38-0) advanced to the Final Four in Indianapolis next week, where they will meet Wisconsin.It took everything Kentucky had to hold off the Fighting Irish (32-6), who came within seconds of shocking the tournament's overwhelming favorite.