About
Most puzzle books save the hard ones for the last few pages. We start there.
Extreme Puzzle Books is a series of puzzle books for solvers who have outgrown “difficult”. Every sudoku and killer sudoku in our books comes from the top of the expert range or beyond, and each book ramps up from there. Nothing is padded with warm-ups.
Our promises
- Every logic puzzle has exactly one solution, and you can reach it by logic alone. You never need to guess.
- The level printed on a puzzle is the level it really is. We don't round up.
- Every logic solution has a step-by-step walkthrough, so you're never stuck for good.
- Clean pages, one puzzle each, with room to write.
The setter
The puzzles are set by M. J. Bailey.
The series
We are starting with sudoku, killer sudoku and wordsearch, and new puzzle types and volumes follow every month. Each type has its own colour, so the shelf tells you what's inside.