Pocket Posh Sixy Sudoku Easy to Medium

<b>Sixy Sudoku puzzles bring a whole new dimension of logic, making a 6 x 6 possibly even more fun than a 9 x 9 Sudoku! There is no plain hard work, just a lot of logic and insight.</b><br><br>Peter Ritmeester, founder and owner of PZZL.com, is the inventor of Hyper Sudoku where four gray regions also contain 1-9.  By applying this idea to 6 x 6 Sudoku, an additional level of logic is created. <b><i>Pocket Posh Sixy Sudoku Easy to Medium Puzzles</i></b> features a foreword, an extensive how-to-play section, 200 easy to medium puzzles, and complete solutions at the back.  <br><br> The rules: insert the digits 1-6 just once in each a) row, b) column, c) bold outlined area AND d) in each white and gray rectangle.  <br>