I made this lap quilt for a friend who loves doing Sudoku puzzles. There are 9 different squares in each nine patch, placed so that they each appear once in each horizontal and vertical line. I quilted the word 'sudoku' into the FMQ on the border but will give her no other clues as to the design - so the quilt itself is a puzzle. It'll be interesting to see if she gets it! :D
the word 'sudoku' in the quilting - this was the best photo I could get, it's not easy to see!