Anderson used the sparkling performance to reduce his goals-against-average to 1.57 and his save percentage to .950 -- both the best in the league.
Dave Dziurzynski, Colin Greening and Andre Benoit each found the net as the Sens notched a second straight win.
The Islanders, meanwhile, dropped a second consecutive game after being blown out 7-0 by Philadelphia Monday.
Travis Hamonic got New York's only goal and Rick DiPietro allowed three goals on 26 shots in the loss.
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