Ryder's power-play goal early in the second period gave the Habs a 2-0 advantage and Alex Galchenyuk also scored as Montreal improved its lead over second-place Boston to three points in the Northeast Division.
Price was busiest in the second period, when he turned aside 11-of-12 Bruins shots en route to the victory.
P.K. Subban assisted on both goals for Montreal, which notched its fifth win in six games.
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