New York Post Difficult Sudoku by Wayne Gould, Paperback | Indigo Chapters

200 New Difficult Puzzles - They Are Not Going to Be Easy But You Are ReadySu Doku, "the crossword without words," comes with a warning: it is seriously addictive. You don't need to be a mathematical genius to solve these puzzles; it is simply a question of logic and a little patience. | New York Post Difficult Sudoku by Wayne Gould, Paperback | Indigo Chapters