Bob Murray and Tom Lysiak scored quick back-to-back goals in the second period and Denis Savard scored twice in the third period as Chicago won, 7-4, yesterday and took a 2-0 lead over visiting Minnesota in their best-of-seven quarterfinal Stanley Cup series.

It moves to Minnesota for the third and fourth games Sunday and Monday.

Moving to a 3-0 lead in the first period, the Black Hawks clinched it in the second period when Murray scored a power play goal from the point at 6:06 and Lysiak made it 5-0 with his third playoff goal at 6:41.

Goals by Al Secord, Steve Larmer and Doug Crossman shot the Hawks in front in the first period, with Savard picking up two assists.

Larmer set up Secord's goal with a perfect pass at 5:46 of the first period and then scored on a pass from Savard at 16:10. Crossman scored a power play goal 68 seconds later on a pass from Savard when the North Stars were two players short.

Minnesota came on at 12:56 of the second period on a power play goal by Craig Hartsburg, whose 50-foot shot got past goalie Murray Bannerman.

Less than four minutes later, Al MacAdam scored on a 30-footer to cut the lead to 5-2.

Dino Ciccarelli cut it to 5-3 with a goal at 3:47 but Chicago's defense stiffened and Savard added his goals at 11:56 and 16:26 before Willi Plett scored for Minnesota.

"At 5-0 my heart was beating normally," said Black Hawks Coach Orval Tessier. "At 5-2 it skipped a couple of beats and at 5-3 it missed four beats in a row."

Bannerman, who split the goaltending duties with Tony Esposito during the regular season, made his fourth straight winning start.

"We did something different but I'm not going to tell you what it was because we have a few more games to play against this team," said Savard.