It took until halfway through the game for a team to take a penalty Monday afternoon at Agganis Arena. With the Boston University men’s hockey team holding the man advantage, it appeared as though the Terriers had a chance to break their 1-1 stalemate with the University of New Hampshire.The power play, however, fell flat with plenty of puck movement, but hardly any shots, and in the final four seconds of the advantage, sophomore wing Matt Lane sent a pass that would not make it to another Terrier. Instead, Wildcats wing Matt Willows picked up the puck and outskated the rest of the Terriers before notching his second goal of the game and registering the 10th shorthanded goal against BU this season.Willows breakaway became the difference in the second half of BU’s home-and-home tilt as the Wildcats defeated BU 3-1 completing the series sweep.The loss was BU’s 12th in its past 14 games.Monday’s game started out well enough for the Terriers as freshman wing Brendan Collier registered the first goal of his collegiate career to give BU the initial lead. Collier, who had three assists coming into the game, picked up the puck in the right corner of BU’s offensive zone with just over 12 minutes remaining in the first. From there, Collier made a quick release from the right circle that skirted by UNH netminder Casey DeSmith.