Your sudoku quilt looks good. I made several using only hand dyes and they were a bit hit. A fellow employee wanted one for her daughters birthday so I used the puzzle from my one-a-day calendar of the day of her birthday. The other thing I like to do is us bar code printed fabric as part of my label and I hand write their birthday as the date on the label. My youngest daughter is a math teacher and has a sudoku club after school. I made her one for her class room. Jan in Vermont