Snake puzzle book for Adults: 400 Medium to Hard Puzzles 9x9 (Volume 15) (Paperback)

<b>The book contains 400 Snake puzzles 9x9<br></b><ul><b><li>Medium puzzles 200 </li><li>Hard puzzles 200</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>Snake (also known as "Tunnel") is a kind of logic puzzles. It is played on a rectangular or square grid, where two cells are marked. The task is to draw a single line ("snake") between marked cells; this line never touches itself, not even diagonally. Numbers outside the grid show how many cells must be blackened in the corresponding row or column.</ul></li></ul>