Sudoku Puzzles and the Number Sequences contains 133 puzzles (58 Sudoku Puzzles and 75 Number Sequences. This book which is in two parts and will test both your logical skills as well as your numerical abilities. All puzzles are graded to test your ability at different levels. The first chapter begins by introducing key strategies for solving Sudoku puzzles. It then follows with with very simple puzzles and ends with quite challenging puzzles. You will gain hours of fun and pleasure doing these types of puzzles. Where as Sudoku puzzles will test you logical thinking skills, Number Sequences will test your numerical IQ.