These books are a modern fitness studio for the brain! A total of 300 diverse puzzles help to keep your mind flexible and train your mental stamina in logical and mathematical thinking. Time and time again, the collection of widely-varied games of... Zobraziť viac
These books are a modern fitness studio for the brain! A total of 300 diverse puzzles help to keep your mind flexible and train your mental stamina in logical and mathematical thinking. Time and time again, the collection of widely-varied games of... Zobraziť viac
