Discover brain training activities, scientific revelations, and tips to help unlock your mind's potential!
Packed with cognitive exercises, logic puzzles and mind maps, this brain activity book offers a balanced, clear, colourful and practical guide to keeping your brain fit.
The Sudoku craze continues! And now, players are ready for a real challenge. From the hardest, 300 puzzles we dare you to solve. All from the editors at Nikoli Publishing, the Japanese company that invented the game. Most Sudoku puzzles are created by computer programs, but not Nikoli's, they are wr..