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This book is not for beginners.\u003c\/p\u003e\u003cb\u003eThe IQ and Insane Standard\u003c\/b\u003e\u003cp\u003eIn response to requests for truly masterful challenges, this volume is packed with \u003cb\u003eIQ-level Killer Sudoku\u003c\/b\u003e puzzles, concluding with a selection of \u003cb\u003eINSANE\u003c\/b\u003e grids for the most dedicated experts. 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If you have been searching for a book that finally matches your skill level, the ball is now in your court. Grab your pencil and play.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49563382808849,"sku":"GOR010804139","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":52459910037777,"sku":"GOR011988487","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ NEW \/ INGRAM","offer_id":53592663228689,"sku":"NIN9781790247530","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1790247535.jpg?v=1751378386"},{"product_id":"deadliest-killer-sudoku-book-djape-9781499762211","title":"Deadliest Killer Sudoku","description":null,"brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49662337679633,"sku":"GOR008107746","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ NEW \/ INGRAM","offer_id":52750933623057,"sku":"NIN9781499762211","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1499762216.jpg?v=1751340044"},{"product_id":"deadliest-killer-sudoku-book-djape-9781519108982","title":"Deadliest Killer Sudoku","description":null,"brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49662338072849,"sku":"GOR007373948","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51033289294097,"sku":"NIN9781519108982","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1519108982.jpg?v=1751212615"},{"product_id":"deadliest-killer-sudoku-book-djape-9781484903711","title":"Deadliest Killer Sudoku","description":null,"brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49662337909009,"sku":"GOR005465396","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51029482045713,"sku":"NIN9781484903711","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1484903714.jpg?v=1751211303"}],"url":"https:\/\/www.worldofbooks.com\/collections\/killer-sudoku-the-master-45-sum-architecture-book-series.oembed","provider":"World of Books ","version":"1.0","type":"link"}