Hard Hidoku Puzzles 16x16 Book for Adults

The book contains 200 excellent puzzles 16x16 at the level of Hard.-All riddles have only 1 solution. -1 puzzles per page. -The font size is correct you will not have to strain your eyes when solving puzzles.-High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). The goal of Hidoku is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. In every Hidoku puzzle the smallest and the highest number are presented in the grid. There are more numbers on the board to help to direct the player how to start the solution and to ensure that Hidoku has only a single solution.