Yeah. I don't disagree with Boyd's views on Sudoku, as filtered through Brucee. Although, I feel that Boyd would have expressed them by saying something like "When I hear the word Sudoku, I reach for my <insert your weapon of choice here>." However, I have the solver code, thanks to Knuth. The UI, thanks to Andrey. And the raspberry pi implementation, thanks to Richard Miller. So will try to put them together, with the help of a young colleague, who grew positively enthused at Richard's video on plan9 on the pi, having been trained on a diet of Java and Windows, and said, when I suggested that it might be easier to do something on Linux, said, "no, we have to use plan9".