{"product_id":"isbn-sixy-sudoku-easy-to-medium","title":"Isbn sixy sudoku easy to medium","description":"\u003cb\u003eSixy Sudoku puzzles bring a whole new dimension of logic, making a 6 x 6 possibly even more fun than a 9 x 9 Sudoku! There is no plain hard work, just a lot of logic and insight.\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003ePeter Ritmeester, founder and owner of PZZL.com, is the inventor of Hyper Sudoku where four gray regions also contain 1-9.  By applying this idea to 6 x 6 Sudoku, an additional level of logic is created.  Pocket Posh Sixy Sudoku Easy to Medium Puzzles features a foreword, an extensive how-to-play section, 200 easy to medium puzzles, and complete solutions at the back.  \u003cbr\u003e\u003cbr\u003eThe rules: insert the digits 1-6 just once in each a) row, b) column, c) bold outlined area AND d) in each white and gray rectangle.","brand":"ISBN","offers":[{"title":"Default Title","offer_id":57399311696250,"sku":"9781524868109","price":26.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0841\/3478\/9439\/files\/800x1200_e5fff88a-77ee-4c35-8467-7bc9b6c3f3d6.jpg?v=1791710812","url":"https:\/\/tormino.es\/products\/isbn-sixy-sudoku-easy-to-medium","provider":"Tormino","version":"1.0","type":"link"}