Nightmare Blocks: The Starter Book (New Number and Logic Puzzles)

Each of 15 letters represents a number to enter into the Nightmare Blocks grid—but which one? Some values are given to you, and following simple rules, you have to work out the rest. Les Page has devised some ingenious and challenging new puzzles for anyone who enjoys Sudoku, KenKen, Train Tracks, and similar puzzles. Sometimes difficult, sometimes easier—but always interesting.