https://fanappic.com/spindoku-a-fun-tweak-to-a-classic-puzzle/
Spindoku: A Fun Tweak to a Classic Puzzle - FanAppic.com
Apr 29, 2011 - I enjoy puzzle games and brain teasers, but I have to admit that I find Sudoku mind numbing. For the first square, I am engaged, probably because any new...
funtweakclassicpuzzle