The Pittsburgh Penguins, who thought they played well enough to win Game 2 of their Wales Conference championship series against Boston, used the self-confidence gained in that loss to defeat the Bruins Sunday night in the third game of the series.

Kevin Stevens, Ron Francis and Mario Lemieux each scored one goal and assisted on another to lift the Penguins to a 4-1 victory over Boston and cut the Bruins' lead to 2-1 in the series.Game 4 of the best-of-seven Stanley Cup semifinal series is scheduled for Tuesday night in Pittsburgh before the teams return to Boston Thursday night for Game 5.