CHICAGO — The Vancouver Canucks got back to a more disciplined style, made sure they had fun and relied on a formula that's familiar and successful.

They used their speed, checked well and got solid goaltending from Roberto Luongo. Their reward: at least one more game with the Chicago Blackhawks in the Western Conference semifinals.

Kevin Bieksa scored twice and Luongo made 29 saves last night in a 4-1 victory that cut Chicago's series lead to 3-2.

"The two games in Vancouver obviously our emotions in some situations got the best of us," Canucks coach Alain Vigneault said. "We needed to be more disciplined and we were."

Vancouver gave up four power play goals in Game 4 on Friday night when its attempt to play more physical ended up in a penalty-filled 7-4 loss that put the Canucks one defeat away from elimination.

"I think that was a little uncharacteristic of us. We are a fairly disciplined team. For whatever reasons we were frustrated the last game and did things we don't usually do," Bieksa said.

"We found ourselves tonight. Everyone out there had fun and played good hockey and that's the result."

Christian Ehrhoff opened the scoring for the Canucks, just 59 seconds into the game, quickly quieting the crowd at the United Center who had hoped to see the Blackhawks make the conference finals for a second straight season.

Chicago finally scored with just more than 7 minutes left when Jonathan Toews tipped in a long shot from between the circles by Duncan Keith.

Alex Burrows added an empty-netter for the Canucks with 44.6 seconds left.