Hitori: 150 puzzles that won't leave you alone! in Bloomington, MN

The word "Hitori" actually means "leave me alone!", but these puzzles are sometimes called "the inverse Sudoku", although they are not a Sudoku variety.
The book starts with an introduction and a detailed description of solving techniques and examples.
In this book there are 150 puzzles in 6 levels of difficulty, ranging in sizes from 5x5 up to a humongous 20x20. Solutions are also included.