Evil Sudoku is not meant to be kind or easy. It's meant to be a challenge! Are you, or do you know someone, who likes difficult Sudoku puzzles? This is the book for them (or you!). Sudoku Matrix includes an extra level of complexity for logic puzzlers - solve an additional four 3x3 boxes within every puzzle. 3 Sudoku challenges in one book Numbers - 50 hard puzzles based on numbers Alphabet - 50 puzzles where you must use logic and the alphabet to find solutions Roman Numerals - 50 mind bending puzzles that could be from Roman times! These brain teasing puzzles will keep any puzzler busy for months to come. A great Christmas, Birthday or "Thank You" gift idea! This 8.5" x 11" book contains: 150 Sudoku puzzles 2 puzzles per page Solutions for all 150 puzzles at rear of book