I agree with Oksewglad, there is one block in the upper right corner facing that has red in it that blends right into the triangle, switch it with the second center block down and rotate so the red is not against the other surrounding blocks red, and you will have it. This is why I ask others to look at my designs. I place them up there, stare at it and stare, but never see the move that needs done till someone else looks at it. Have fun piecing it and we look forward to seeing it displayed in the UFO thread.