I dont know the name of the pattern but it appears its a row of equal sized squares and a row of square, two triangles to make a square, square, two triangles and you would assemble the rows this way on a diagonal. I try to figure out things as I look at them sometimes I am right sometimes I am a mile off but having it right next to you I think you could lay out your pieces to match that one and then assemble as above. I have seen that pattern have you checked quilterscache.com?