Randoku

ゲームの説明
Randoku stands for "Random Sudoku". Instead of confronting you with pre-assembled puzzles, Randoku generates randomized Sudokus, varying in difficulty. Puzzles are saved automatically and can be continued at a later time.
How to play
You only need a mouse/touchpad to play. - Double click clears a box - A hint can be placed directly into a selected box