We have something new for you, with Mind Puzzles for Adults Difficult, a great way for you to spend a few hours in deep concentration, working out complex and fun puzzles and conundrums. Doors is a logic puzzle, where every cell denotes a "room". The aim is to close some "doors" between rooms. The book comes complete with the solutions at the back, so you’ll always know if you got it right, or can find the solution if you are really stuck for the answer. Don’t delay. Get a copy today!