Harte, härtere und härteste Rätsel: Sudoku Hard To Extreme Edition von Puzzle Pulse
18,41 €
The puzzles in this book will only get more challenging the longer you play. A progressive game will push you outside of your comfort zone. You grow better when you're tested, and that means mental development. You will notice that your logical thinking and creativity will improve, as manifested by the speed of solving. Get a copy today! The Brain is a muscle and must be exercised at any age. Without exercise the brain will become lazy and is at increased risk of disease. Through interactive games, Puzzle Pulse books will get the brain going and elevate its function and performance, while providing hours of cost efficient entertainment.
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