The win streak for the Blues (7-8-0) comes in the wake of an ugly eight-game slide, when they were outscored 38-12.
Andreas Athanasiou scored twice for Chicago, and Arvid Soderblom made 30 stops. The Blackhawks (6-7-3) lost for the fourth time in five games.
The teams combined for five goals during a wild second period.
SENATORS 4, SABRES 1
OTTAWA, Ontario (AP) — Anton Forsberg made 29 saves and Ottawa snapped a five-game home losing streak with a win over Buffalo.
Tage Thompson scored for the Sabres, who lost their seventh straight game.
Eric Comrie started in net for Buffalo, but was unable to finish after stopping 22 of 24 shots. Craig Anderson, the longtime former Senators goaltender, came in midway through the second period and finished with 14 saves.
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The Associated Press