In life, you often miss the most important details because you lack concentration power.
Maybe you get tired of thinking easily because answers are often just a click away.
With Sudoku, however, you really have to come up with your own strategies to creatively complete each puzzle set.
Google or any other textbook cannot help you this time.
Are you ready to play?.
My big book of soduku puzzles vol 3: 202 difficult sudoku puzzles edition, paperback/Puzzle Crazy
