One Year To A BETTER BRAIN! A 52-Week Program To Make You Sharper, Day By DayA fun program-featuring LOGIC, OBSERVATION, NUMBER, and WORD PUZZLES, in categories such as reasoning, concentration, and
Much more than just a puzzle book ? a comprehensive collection featuring every major variant of sudoku ever created.Over 25 major sudoku types . . . nearly 150 different variants . . . and almost 500
The Mammoth Book of Logical Puzzle Mazes is filled to the brim with over 450 loop-finding, path-placing, and brain-teasing mazes. It is perfect for improving your memory and sharpening your mind.
