Fiendish Felix
You’ve been warned.Most sudoku books give you 30 clues or more. This one gives you as few as 17, the smallest number a sudoku can have and still have only one solution. No easy wins. No warm-up puzzles. Just 120 grids that will test every technique you know - and a few you don’t yet.Every puzzle starts with between 17 and 21 numbers filled in, and the clue counts are mixed throughout the book. Turn the page and you could get a 21... or a 17. Scanning and guessing won’t get you far here. You’ll need candidate notes, careful logic and plenty of patience.What’s inside120 extreme-level sudoku puzzles, each starting with only 17 to 21 cluesEvery puzzle checked to have exactly one solutionOne puzzle per page, with large grids that leave room for penciled candidatesA time tracker and Solved box on every page, so you can log your winsA How to Play page with tips for using candidates on low-clue puzzles, plus 5 pages on advanced techniquesFull answers at the back, six per page, with the starting clues shown in boldA5 size (5.83 x 8.27 in): easy to hold, roomy enough to solve inPerfect forExperienced solvers who find 'hard' and 'expert' books too easyAnyone ready to learn advanced techniques like pairs, X-Wings and chainsPuzzle lovers who enjoy a challenge they can brag aboutGifts for the sudoku fanatic who thinks they’ve seen it allSimple rules, brutal logic - and 120 puzzles that dare you to finish just one.