Killer Sudoku Puzzle Book for Adults: 200 Hard to Very Hard Puzzles 9x9 (Volume2) (Paperback)

<b>The book contains 200 excellent Killer Sudoku puzzles 9x9.<br></b><ul><b><li>Hard puzzles 100 </li><li>Very Hard puzzles 100</li><li> All riddles have only 1 solution. </li><li> 2 puzzles per page. </li><li>The font size is correct you will not have to strain your eyes when solving puzzles.</li></b><li><b>High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). </b><ul><b><br></b> Killer Sudoku is based on the original Sudoku grid, with the same rules and numbers-1 to 9, but with an added mathematical challenge. The only difference is the killer Sudoku: additional numbers are given - the sums of values in groups of cells. The numbers contained in the group cannot be repeated. This variant also called "Sums Sudoku", "Sums Number Place", " Samunamupure ", "Kikagaku Nampure".</ul></li></ul>