I am considering knitting the "sudoku" blanket. This is made up of 9 colours and 9 patterns. There is one of each pattern in each colour.
Now the maker of the pattern claims that it is not possible to have both the 9 colours in a sudoku pattern AND the 9 patterns in a sudoku pattern.
I am not sure whether to just believe this, or to spend lots of time trying to prove it one way or another.
If anyone knows why - and can show me proof - this doesn't work, let me know.
Until then I'll be working on my complicated sudoku!