Preheat oven to 325. Sift together flour, baking powder and salt. Melt 6 ounces Semisweet chocolate, un-sweetened chocolate and butter in double boiler, stirring until smooth (about 6 min.) Place eggs, sugar & vanilla in bowl of an electric mixer fitted with a paddle. Beat on medium 4 minutes, scrape sides, then beat 2 minutes. Add the melted chocolate and beat for 1 more minute. Add dry ingredients and remaining chocolate pieces and mix until thoroughly combined. Use a heaping tablespoon of dough for each cookie. Bake on middle rack for 9 – 10 minutes. Cool on baking sheet until set, then transfer to wire rack. Makes 3 dozen yummy cookies!