Tiger Easy SUDOKU 4x4 to 7x7

Easy SUDOKU 4x4,6x6,7x7 for Shimajiro Do you want to strengthen your kid's thinking ability? Why don't you train your kids' head by doing puzzles with some Tiger boy and friends' pictures? That is the origin of the development of this application. I hope children would have fun playing with SUDOKU, train the brain, and acquire thinking skills. It also becomes a brain train of elderly people. The…