The author of New Models of Sudoku, </em> Nael Qutub, is a well-versed and experienced math teacher of various programmes at middle and high schools. He wanted the puzzles not only to entertain, but also to stimulate the thinking skills of puzzle-solvers while reinforcing simple math concepts by placing the right number in the right place while going around and across the 9x9 grid.</p>The author offers a unique and enjoyable way to engage reasoning through a new style of Sudoku while avoiding stress. It is the kind of puzzle that contributes to memory improvement and mental clarity.</p>New Models of Sudoku </em>is an excellent tool for challenging and enhancing the mindset and logic of individuals. It takes Sudoku a step further, whereby the numbers used have a meaning. Incorporating mathematical elements will make the puzzle a rewarding experience for those who embrace changes and challenges.</p>While most Sudoku puzzles have three levels, New Models of Sudoku, </em> to the contrary, has six levels ranging from Beginner to Expert levels to accommodate all sorts of abilities and skills. Calculators are NOT needed.</p> <strong> TRY TO SOLVE THE NEW MODELS!</strong></p>