Книга "The Ultimate Number Adventure for Sudoku Experts | Logic Puzzles with 240 Exercises".Sudoku is all about numbers and numbers are logic and memory boosters. When you play, you memorize the numbers that are there. Next, you use your memory too figure out the numbers that should be in specific boxes. Stimulate your mind by playing Sudoku. Begin with your first puzzle today! Это и многое другое вы найдете в книге The Ultimate Number Adventure for Sudoku Experts . Logic Puzzles with 240 Exercises (Puzzle Therapist)