My own design. Instead of numbers I used colours and textures to create the puzzle grid. This one meant I could do small knitting projects that created a larger project and for each pattern I got to practice it 9 times for the nine squares, which helped me get back into the rythym of knitting. Then I crocheted the grid between the blocks.
Do you like Sudoku puzzles?
It occurred to me that seeing the squares as colours rather than numbers might make it easier to solve...
I'm now making one in crochet squares with the remaining wool.