Very nice, David and William. I was also able to get to about a 2 second solution, but I didn't have to do bit operations: https://nbviewer.jupyter.org/github/

Very nice, David and William. I was also able to get to about a 2 second solution, but I didn't have to do bit operations: https://nbviewer.jupyter.org/github/norvig/pytudes/blob/master/ipynb/SpellingBee.ipynb https://nbviewer.jupyter.org/github/norvig/pytudes/blob/mast...