Grand Master Sudoku 1

<p>Do you have what it takes to be a Su Doku Grand Master?</p><p>Su Doku the crosswords without words come with a warning: it is seriously addictive. You don't need to be a mathematical genius to solve these puzzles; it is simply a question of logic and a little patience. Here is a collection of 100 new puzzles arranged according to difficulty starting with the easiest and ending with the fiendishly difficult.</p>