Butter the bottom and sides of two 8x8 inch square pans (not the same if you use 9x13). In a large bowl stir butter, sugars, and syrup. Stir in the eggs, one at a time until blended. In small saucepan, melt chocolate, stir into sugar mixture. Add almond extract. Add flour and stir until smooth. Add the nuts and stir until evenly distributed. Turn into prepared pans, spread evenly. Bake at 180ºC about 40 minutes. Place on wire rack to cool. Refrigerate uncovered until cool. Cut into bars and enjoy.