The very best To get my mind off of serious stuff I do this. So at times I became a Samurai or Sudoku junkie. So I've tried literally tens and tens of countless out there. It's with this experience that I had to write this review after having tried it for awhile. Every thing in this is just perfect. From the simple design to numbering are just right. All others after reading the description or seeing the obnoxious design turned me off. Most I installed and had to uninstall right away. I am so impressed with this one.