James L. Kirby

I have been through all of the lessons from freshman through the senior lessons and have gone back and reviewed many of them. I have found your technique very helpful and consider you to be quite an accomplished teacher. My solving of Sudoku puzzles has improved a great deal. Now I just need to slow down a little and quit making careless mistakes. I have just watched the 1st of the graduate level lesson videos. Thanks for the care you have taken to make the lessons and exercise puzzles helpful and your entire program professional and of high quality. I would recommend your videos to anyone from beginners to those trying to hone their skills.