Chocolate Cheesecake with eggs

1 (18 1/4 ounce) package chocolate cake mix 3 large eggs 1/3 cup butter , melted 2 (8 ounce) packages cream cheese 1 cup sour cream 1 1/2 cups semi-sweet[...]

3 cups chocolate plain sweet biscuit crumbs 200 g softened butter 200 g dark chocolate 250 g 9% white cheese 250 g 5% white cheese 1/2 cup sugar 1 teaspoon[...]

1 1/2 cups fine graham cracker crumbs 1/2 cup softened butter 2 cups sugar , plus 3 tablespoons sugar 1 1/2 lbs softened cream cheese 3 eggs 1/2 lb semisweet[...]