{"product_id":"very-hard-maths-puzzles-with-answers-sujiken-puzzles-9781724016140","title":"Very Hard Maths Puzzles With Answers: Sujiken Puzzles","description":"\u003cp\u003e • Author(s): Marcus White\u003cbr\u003e • Publisher: Independently Published\u003cbr\u003e • Publisher Imprint: Independently Published\u003cbr\u003e • BISAC: Logic \u0026amp; Brain Teasers\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSujiken\u003c\/b\u003e (from Japanese \"sujikai\", literally \"diagonal\") is a variation of Sudoku, invented by George Heineman (USA). The puzzle consists of a triangular grid of cells containing digits from 1 to 9. The objective is to fill a grid with digits so that each cell contains a digit and no digit is repeated in any column, row and diagonal in any direction. Also, no digit occurs twice in any of the three larger 3 x 3 square regions and any of the three larger triangular regions enclosed by thick borders.\u003c\/p\u003e\u003cp\u003elogic puzzle - logic puzzle books for adults - puzzle books logic - adult logic puzzle book - logic puzzle game - logic grid puzzle books - logic stacking puzzle - math puzzle books for adults - puzzle math - math puzzle games - math jigsaw puzzle - math puzzle book - math puzzle for adults - math puzzle adult\u003c\/p\u003e","brand":"Independently Published","offers":[{"title":"Paperback","offer_id":45547246256279,"sku":"9781724016140","price":931.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9781724016140.webp?v=1767127402","url":"https:\/\/atlanticbooks.com\/products\/very-hard-maths-puzzles-with-answers-sujiken-puzzles-9781724016140","provider":"Atlantic Books","version":"1.0","type":"link"}