Books by David Klein

SUDOKU ROCKS! by David Klein
Released: June 21, 2017

"More tantalizing mind candy for those with time on their hands, despite some incomplete explanations."
Run out of sudoku puzzles to solve? Here are 530 more of wildly varying difficulty, along with some techniques for mastering them. Read full book review >
SUDOKU by David Klein
Released: Oct. 24, 2016

"A fine primer that should dramatically upgrade readers' Sudoku chops."
Learn to solve beguiling brain teasers faster with this superb how-to guide. Read full book review >