With the score tied 1-1 late in the second period, Ottawa's Nick Foligno was whistled for a hotly disputed goaltender interference call, handing the Rangers a 4-on-3 power play. Richards unleashed a slap shot from the right circle that went underneath Senators goalie Craig Anderson to forge a decisive lead.
New York doubled the advantage only 2:11 later when first-round draft choice Chris Kreider notched his first professional goal off a Derek Stepan feed, and the Rangers held on to even their Eastern Conference quarterfinal series at three wins each.
Henrik Lundqvist turned aside 25-of-27 shots for top-seeded New York, which forced a decisive Game 7 Thursday at Madison Square Garden.
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