Deadliest Killer Sudoku: Test your BRAIN and IQ with these INSANE puzzles (Killer Sudoku: The Master 45-Sum Architecture)

Deadliest Killer Sudoku: Test your BRAIN and IQ with these INSANE puzzles (Killer Sudoku: The Master 45-Sum Architecture)

Deadliest Killer Sudoku Volume 3 — Where Every Grid Is a Battle Volume 3 of the series that takes Killer Sudoku to its extreme. Every puzzle in this book is designed to push skilled solvers to their limits — and sometimes past them. At the Deadliest level, the puzzles look deceptively simple: an empty grid with cage outlines and sum clues. No starting digits. But the cages are crafted so that the most obvious deduction paths lead to dead ends. You must find the less obvious paths — the unexpected application of the Rule of 45, the innie that covers three separate rows, the cage combination that eliminates candidates you thought were safe. This is Volume 3 of 5 in the Deadliest series, which sits above DJAPE's 10-volume "Revenge of Killer Sudoku" in difficulty. Readers who have completed the Revenge series and want to test whether they have truly mastered Killer Sudoku turn to the Deadliest books to find out. All solutions included. 6 x 9 inch format. Every puzzle has a unique solution reachable without guessing. Created by DJAPE — puzzle maker since 2005, PhD in Computer Science, author of over 250 books, weekly contributor to The Washington Post.