Michelle Kostszewski scored 3:45 into the first period, and Taconic Hills held off North Warren for a 1-0 Section II Class C quarterfinal win.
North Warren won the statistical battle with a 17-11 edge in shots on goal and a 19-5 advantage in penalty corners.
Alison Van Tassel assisted on Kostszewski’s goal, and Kiersten Duncan made 11 saves for the No. 3-seeded Titans.
Top-seeded Hoosick Falls, No. 2 seed and defending champion Greenwich, and No. 4 Warrensburg also advanced to Wednesday’s semifinal round.