Dial S for Sudoku

If Hitchcock had created sudoku, they would be just like these: suspenseful, absorbing, with a satisfying ending, and handsomely packaged. Like a good film noir, Dial S for Sudoku will unsettle even the most stalwart, demanding detective-worthy deductive reasoning and attentiveness. Solvers will love this “showdown” with puzzle master Frank Longo’s challenging creations!