{"product_id":"binary-puzzle-books-for-adults-alena-gurin-9798721449161","title":"Binary puzzle books for Adults: 400 Hard to Very Hard Puzzles 7x7 (Volume 19)","description":"\u003cb\u003eThe book contains 400 excellent Binary puzzles 7x7.\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eHard puzzles 200 \u003c\/li\u003e\n\u003cli\u003eVery Hard 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\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Alena Gurin\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 8721449163\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798721449161\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 03\/13\/2021\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 240\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.72lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.02h x 5.98w x 0.51d","brand":"Alena Gurin","offers":[{"title":"Paperback","offer_id":44567273373951,"sku":"9798721449161","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_5afb3753-4686-412c-a856-abced0cee67b.jpg?v=1701376870","url":"https:\/\/www.whiterainbookhouse.com\/products\/binary-puzzle-books-for-adults-alena-gurin-9798721449161","provider":"WR Book House","version":"1.0","type":"link"}