Sudoku is a puzzle that has taken the world by storm. Many people are hooked to this puzzle. Some spend hours each day to solve the puzzles. Others must do the puzzle daily in the newspapers.

Each puzzle is made up of 81 squares arranged in 9 rows and 9 columns. It is also arranged in 9 boxes of 3 X 3 squares.

The basic rule of Sudoku is to fill in the blanks with the numbers 1 to 9, so that the number does not repeat in any row, column or box.

I have written this book for the beginner. It contains puzzles at various levels of difficulty - staring from Easy, Moderate, Difficult and Complex.

The Easy puzzle has 36 blanks. As the level increases, there are more blanks to be filled.

The puzzles at the first three levels have a unique solution. By following a systematic approach, you can solve each puzzle.  At each point, you will be able to find a blank space that has only 1 number that can fit it. There is no need to make any guess.