{"product_id":"binary-puzzle-books-for-adults-400-easy-to-medium-puzzles-11x11-volume-20-9798721453830","title":"Binary puzzle books for Adults: 400 Easy to Medium Puzzles 11x11 (Volume 20)","description":"\u003cb\u003eThe book contains 400 excellent Binary puzzles 11x11.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eEasy puzzles 200 \u003c\/li\u003e\n\u003cli\u003eMedium puzzles 200\u003c\/li\u003e\n\u003cli\u003e All riddles have only 1 solution. \u003c\/li\u003e\n\u003cli\u003e 2 puzzles per page. \u003c\/li\u003e\n\u003cli\u003eThe font size is correct you will not have to strain your eyes when solving puzzles.\u003c\/li\u003e\n\u003cli\u003eHigh quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). \u003cul\u003e\u003cbr\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/b\u003eBinary (also known as \"Binairo Puzzle\", \"Takuzu\", \"Tohu wa Vohu\") is played on a rectangular or square grid. The goal is to fill in the grid with digits \"0\" and \"1\" according to the following rules: Each box should contain a zero or a one.No more than two similar numbers next to or below each other are allowed.Each row and each column should contain an equal number of zeros and ones (or one more for odd sized grids).Each row is unique, and each column is unique.\u003cbr\u003e","brand":"Independently Published","offers":[{"title":"Default Title","offer_id":50861810876690,"sku":"9798721453830","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_162f5adc-a78d-4452-8876-0522f9bacc85.jpg?v=1737605844","url":"https:\/\/surprise-castle.myshopify.com\/products\/binary-puzzle-books-for-adults-400-easy-to-medium-puzzles-11x11-volume-20-9798721453830","provider":"Surprise Castle","version":"1.0","type":"link"}