Defending Class B champion Paint Branch advanced to the semifinals of the Maryland State baseball tournament by defeating Allegany, 14-6 today.

The Panthers, 14-4, were paced by a 14-hit attack and four runs batted in by center fielder Ken McAuliffe. Six Allegany errors also helped Paint Branch.

McAuliffe's two-run homer in the first inning gave Paint Branch the lead for good. And the Panthers, with consecutive ground-rule doubles by first baseman Jeff Rivkin and McAuliffe, jumped to a 5-0 lead in the second.

Allegany rallied in the third inning when winning pitcher Rick Knicely walked in a run with the bases loaded, and then gave up a three-run double to Camper Francis Mouse.

Paint Branch retaliated with a four-run fourth inning. Shortstop Mike Corsiatto was singled home by Rivkin, who then scored on a passed ball third strike on McAuliffe. McAuliffe scurried around to score on a stolen base and two passed balls. The inning was completed by third baseman Bill Pappas' run after he singled, stole second, moved to third on yet another passed ball, and scored on Robbie Fehr's ground out.

The Panthers wraped it up with a four-run sixth inning.

Pappas collected three hits and scored three runs, as did Corsiatto. McAuliffe also scored three runs.

Paint Branch advances to the semifinals next week at White Pines in La Plata.

In a Class A quarterfinal game, Magruder held off Thomas Johnson, 4-2, on a four-hitter by Ray Gerard.