CHICAGO – Patrick Kane and Marian Hossa each scored two goals and the Blackhawks rolled to a 6-3 victory over the Colorado Avalanche on Sunday night that extended their season-high win streak to seven.

Jonathan Toews had a goal and two assists to help the Hawks chase Semyon Varlamov and improved to 18-5-1 at home. Brandon Mashinter scored his second career goal and Corey Crawford had 34 saves.

The Hawks (58 points) moved within four points of idle Dallas for the top spot in the Western Conference.

Varlamov was pulled after Kane’s NHL-best 13th power-play goal made it 4-2 at 12:25 of the second.

The 27-year-old Varlamov went 11-3 with a 1.80 goals-against average in his first 15 appearances against the Hawks but has dropped each of his last two starts against the Hawks, allowing four goals in each one.

Matt Duchene had two goals and an assist for Colorado, which had won three in a row and four of six. Nathan MacKinnon also scored and Calvin Pickard finished with 13 stops in relief of Varlamov, who had 16 saves.

Duchene’s fourth goal in his past four games and No. 21 on the season trimmed the Hawks’ lead to 3-2 at 9:18 of the second. But the reigning Stanley Cup champions responded with an impressive offensive flurry over the final part of the period.

After Kane picked up his 25th goal, Toews drove a slap shot over Pickard’s glove for his 16th of the season.

Hossa then finished off a pretty passing sequence for the Hawks’ top line, making it 6-2 at 18:42.

Hossa also scored off a nice pass by defenseman Niklas Hjalmarsson earlier in the second, stopping a scoring drought of 14 games with his first goal since Dec. 6. His first multigoal game of the season put him at 493 goals for his stellar career.