{"product_id":"triangular-sudoku-150-tridoku-puzzles-9781438256061","title":"Triangular Sudoku: 150 TriDoku puzzles","description":"Experience the Original: 150 TriDoku Puzzles in a Triangular Grid\u003cp\u003eRefresh your passion for logic with the first-ever collection of \u003cb\u003eTriDoku\u003c\/b\u003e. If you are tired of standard 3x3 grids, this book introduces a revolutionary triangular architecture that will sharpen your existing skills and force you to learn entirely new solving techniques. Each puzzle is played on a massive triangular grid where nonets are triangles rather than squares, creating a sophisticated mental workout.\u003c\/p\u003e\u003cb\u003eThe Unique Rules of TriDoku\u003c\/b\u003e\u003cp\u003eTriDoku abandons traditional rows and columns in favor of geometric complexity. To solve these grids, you must master several unique constraints: \u003c\/p\u003e\u003cul\u003e \u003cli\u003e\n\u003cb\u003eTriangular Nonets: \u003c\/b\u003e Each of the nine large triangles (drawn with thick lines) must contain all numbers from 1 to 9.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOuter and Inner Edges: \u003c\/b\u003e The three sides of the large \"big\" triangle and the three sides of the \"inner\" triangle must each contain the digits 1 to 9 without repeats.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThe Touching Rule: \u003c\/b\u003e No two cells that touch-even by a single angle-can contain the same number. A single cell can touch up to 12 adjacent cells, allowing for rapid elimination of candidates.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThe Hexagon Rule: \u003c\/b\u003e Any six cells forming a hexagon must contain unique digits, providing a powerful secondary deductive tool.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003eProfessional Challenge \u0026amp; Variety\u003c\/b\u003e\u003cp\u003eThis landmark first edition features 150 puzzles that escalate in complexity, including two elite variants for the advanced solver: \u003c\/p\u003e\u003cul\u003e \u003cli\u003e\n\u003cb\u003e10 TriDoku Star (TriDoku X): \u003c\/b\u003e Features three additional lines where numbers cannot repeat, similar to Diagonal Sudoku.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e10 Killer TriDoku: \u003c\/b\u003e The ultimate \"beast\" of the collection, replacing clues with cages and sums for a deeply satisfying arithmetic challenge.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cb\u003eExpertly Crafted by Djape\u003c\/b\u003e\u003cp\u003eAs a renowned contributor to \u003ci\u003eThe Washington Post\u003c\/i\u003e, Djape delivers professional-grade logic engineering that ensures every puzzle has a \u003cb\u003esingle unique solution\u003c\/b\u003e reachable without guessing. Printed on high-quality paper in a large 8.5\" x 11\" format, this collection is the gold standard for anyone seeking a \"refreshing\" and mathematically rigorous alternative to classic Sudoku.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Dj Ape\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Createspace Independent Publishing Platform\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 09\/07\/2010\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 96\u003cbr\u003e\u003cb\u003eBinding Type:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.31lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.00h x 6.00w x 0.20d\u003cbr\u003e\u003cb\u003eISBN:\u003c\/b\u003e 9781438256061\u003cbr\u003e\u003cp\u003e\u003cb\u003eAbout the Author\u003c\/b\u003e\u003cbr\u003eDJAPE is the author of over 30 puzzle books, ranging from Sudoku variants such as Killer Sudoku and Samurai Sudoku to Hidoku, CalcuDoku and Picross\/Hanjie\/Griddlers\/Nonograms puzzles. Also, Djape contributes regularly to newspapers and magazines across the globe, including \u003cstrong\u003eThe Washington Post\u003c\/strong\u003e. Currently Djape is working on his \u003cstrong\u003ePhD\u003c\/strong\u003e thesis in \u003cstrong\u003eComputer Science\u003c\/strong\u003e. Likes \u003cstrong\u003esailing\u003c\/strong\u003e, playing \u003cstrong\u003ebridge\u003c\/strong\u003e and travelling.\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003ci\u003eThis title is not returnable\u003c\/i\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Createspace Independent Publishing Platform","offers":[{"title":"Paperback","offer_id":44614585024627,"sku":"9781438256061","price":12.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9255\/0515\/files\/img_dbedef34-38ee-4ea6-bcac-626a050ff3c5.jpg?v=1775149588","url":"https:\/\/bookstorenmore.com\/en-de\/products\/triangular-sudoku-150-tridoku-puzzles-9781438256061","provider":"Bookstore N More","version":"1.0","type":"link"}