ST. PAUL, Minn. - Blake Hillman broke a tie with 4:32 left and Denver beat Ferris State 6-3 on Sunday in the NCAA West Regional final to advance to the Frozen Four.

Nolan Zajac added another goal 25 seconds later, and Quentin Shore capped the scoring spree on a power-play with 2:27 left. Hillman, Dylan Gambrell and Danton Heinen each had a goal and two assists, and Trevor Moore also scored for the Pioneers (25-9-6).

Denver will face North Dakota in the national semifinals April 7 in Tampa, Florida. The Pioneers advanced to their 14th Frozen Four. They won the last of the eight national titles in 2005.

On Saturday night, Denver routed Boston University 7-2.

Gerald Mayhew, Corey Mackin and Kyle Shempp scored for Ferris State (20-15-6). The Bulldogs beat St. Cloud State 5-4 in overtime Saturday.

Heinen opened the scoring at 5:34 of the first off a rebound of Gambrell's shot.

Mayhew tied it on a breakaway with 4:47 left in the first.

Gambrell put the Pioneers back on top with 1:20 left on a shot from the top of the faceoff circle, but Ferris State tied it a minute later when Mackin's crossing pass deflected off a Denver defenceman and past goalie Tanner Jaillet.

Less than three minutes into the third, Hillman threaded a pass through the neutral zone to Moore, who beat Smith cleanly for a 3-2 lead. Schempp tied it on a power play with 12:33 to go.