SUDOKU, a logic based number placement puzzle, is not always easy to solve for everyone. It requires great skills, logical thinking and utter concentration. Practising Sudoku puzzles rarely misses brain-acuity, i.e., persons practising Soduko puzzles give their brain a good exercise, which in turn sharpens their minds and accelerate their logical thinking. Goodwill's Sodoku series consists of eight books: Brain Busting Sudoku, Fascinating Sudoku, IQ Sharpening Sudoku, Mind Zooming Sudoku, More Sudoku, Sensational Sudoku, Super Sudoku and Supreme Sudoku Sudoku, all equipped with brain-storming sudoku puzzles, which definitely help you boost up your brainpower.