365 exercises for the mind
"Find satisfying solutions to puzzles that test your skill with: numbers, words, logic, concentration, creativity... The purpose of these exercises is to give pleasure and enjoyment. Plus the chance to participate in that most human of all efforts: problem-solving - and without any dangerous consequences whatsoever!"--page [4] of cover
426 pages : illustrations ; 22 cm
9780760700198, 0760700192
41636397