{"product_id":"100-cross-sums-puzzles-paperback","title":"100 Cross-sums Puzzles - Paperback","description":"\u003cdiv\u003e\u003cp style=\"text-align: right;\"\u003e\u003ca href=\"https:\/\/reportcopyrightinfringement.com\/\" target=\"_blank\" rel=\"nofollow\"\u003e\u003cb\u003eReport copyright infringement\u003c\/b\u003e\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\u003cp\u003eby \u003cb\u003eAndrzej Baran\u003c\/b\u003e (Editor), \u003cb\u003eUrszula Marciniak\u003c\/b\u003e (Editor), \u003cb\u003eJoanna Diez\u003c\/b\u003e (Translator)\u003c\/p\u003e\u003cp\u003eThis book contains 100 Cros Sums created by LOGI, the leading Polish puzzle publisher.\u003cbr\u003e Inside you will find 100 puzzles different sizes, from 9x13 till 18x26, different difficulty levels. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e How to solve? Into white fields insert numbers from 1 to 9. White numbers in black fields are the sums of the inserted numbers (e.g. 23 = 9 + 6 + 8). The numbers cannot repeat within one sum.\u003cbr\u003e Solve free cross sums at http: \/\/www.wydawnictwologi.pl\/krzyzowki-logiczne \u003cp\u003e\u003c\/p\u003e \u003cb\u003eReasons to like Logi puzzles: \u003c\/b\u003e \u003col\u003e \u003cli\u003e\n\u003cb\u003eEach puzzle has only one solution.\u003c\/b\u003e\u003cbr\u003ePuzzles are tested by a computer program designed by Urszula Marciniak, a mathematician and puzzle lover.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eYou can solve puzzles using only logical thinking - no guessing is needed.\u003c\/b\u003e\u003cbr\u003eThe program is designed so that it uses only human kind of thinking. So even if a puzzle has only one solution, the program can reject it, because human will not be able to solve such puzzle without guessing and finding contradictions. This is what makes Logi puzzles enjoyable to solve.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePuzzles are created by professional graphic designers.\u003c\/b\u003e\u003cbr\u003eWe have very high standards for graphics. We don't accept all images, they have to fulfill certain conditions, like no empty lines, clarity, and many other.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eWe set five difficulty levels. \u003c\/b\u003e\u003cbr\u003eThe levels are set by a computer program, so they are always objective and the same. \u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNo repeating puzzles.\u003c\/b\u003e\u003cbr\u003eThe puzzles you see in this book are not published in any other non Polish language book. They were only published in our Polish monthly magazines available in Polish press stores or in online store at our website.\u003c\/li\u003e \u003cli\u003e\u003cb\u003eWe publish puzzles since 2004 - we know well what puzzlers like.\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIf you have problems with solving a puzzle send it to us and we will show you a next step.\u003c\/b\u003e\u003cbr\u003eAlthough puzzlers prefer to solve puzzle alone to feel proud, sometimes a small tip can be very helpful. We provide such help all the time for Polish puzzlers.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIf you are new in puzzles you can check our website for tutorials www.logi-puzzles.com. \u003c\/b\u003e\u003cbr\u003eGo to the Friday Online Mix section and click below a specific puzzle to see tips and tricks.\u003c\/li\u003e \u003c\/ol\u003e \u003cbr\u003e The person who takes care of Logi's high quality is Urszula Marciniak - the founder of Logi. \u003cbr\u003eMathematician, photographer, a puzzle fan  \u003cp\u003e\u003c\/p\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 64\u003c\/div\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.13 x 11 x 8.5 IN\u003c\/div\u003e\n            \u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e December 18, 2013\u003c\/div\u003e\n            ","brand":"BooksCloud","offers":[{"title":"Default Title","offer_id":47270774735097,"sku":"9781494709365","price":18.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/2782\/3097\/files\/eGNoSkorZUROUlM3bmJKdXdFQVF0Zz09.webp?v=1768918493","url":"https:\/\/bookscloud.io\/products\/100-cross-sums-puzzles-paperback","provider":"BooksCloud Book Dropshipping","version":"1.0","type":"link"}